초록 ▼

A restraint for retaining a person within a seat. The restraint has a lap bar and a shoulder bar which can be independently adjusted. The lap bar can be rotated either to retain a person or to permit a person to enter or exit. Also, the lap bar can be pulled farther away or pushed closer to a person

A restraint for retaining a person within a seat. The restraint has a lap bar and a shoulder bar which can be independently adjusted. The lap bar can be rotated either to retain a person or to permit a person to enter or exit. Also, the lap bar can be pulled farther away or pushed closer to a person. When extended completely, the lap bar will remain locked in such position until the lap bar is rotated toward the position a person will occupy. When pushed toward a person, the lap bar cannot be pushed farther away until a rod to which the lap bar is attached is released from a lock. The shoulder retainer is attached to a similar rod which is locked in this same fashion.

대표청구항 ▼

1. A restraint, which comprises:a support structure;two blocks, each block containing an aperture with a center and having a first end and a second end and, between the first end of said block and the center of the aperture, being rotatably attached to said support structure;a rod having a first end

1. A restraint, which comprises:a support structure;two blocks, each block containing an aperture with a center and having a first end and a second end and, between the first end of said block and the center of the aperture, being rotatably attached to said support structure;a rod having a first end, a second end, and a length, having a portion of said rod beginning near the first end of said rod vary periodically in thickness along the length of said rod with the maximum periodic thickness being less than the minimum diameter of the aperture in said blocks, and having the second end of said rod available for connection to a restraining device, said blocks being located at such a distance from one another that the aperture in one of said blocks will be at one of the points of minimum thickness of said rod when the aperture in the other of said blocks is at one of the points of maximum thickness of said rod, said rod being removably inserted into the apertures of said blocks;a means for biasing said blocks;a hinge attached to the second end of said rod;a lap bar having a first end attached to said hinge and having a second end angled so that such second end is generally parallel to said rod;a lever arm slidably mounted on said support structure and connected to said blocks near the second end of each of said blocks;a sheathed cable having the sheathing of said cable attached to said support structure and having said cable connected to a first end of said lever arm so that when said cable pulls said lever arm, the biasing of said blocks is reduced, allowing said rod to be removed;a gas cylinder having a housing, a first end of a cylinder rod attached to a piston slidably mounted within a bore of the housing, containing pressurized gas on a side of the piston opposite to the side on which the cylinder rod is located, said gas cylinder being connected to said support structure and having a second end of the cylinder rod attached to said hinge;a spring;a plug biased by said spring to enter a cavity shaped to accommodate said plug within a first end of said lap bar;a stop attached to said support structure;a telescoping release rod having a first segment and a second segment with said first segment attached to said stop and with said second segment attached to said plug, said telescoping release rod having the length of the first segment and the length of the second segment selected such that when the rod has reached its maximum desired extension from the blocks, the stop will cause said release rod to pull said plug from the cavity;a plate having an aperture, said plate being rigidly attached to said support structure;a slide spring;a slide slidably mounted to said rod and oriented such that said slide spring urges a first end of said slide toward said plate, said plate constructed to be beside said slide throughout the movement of said rod, the aperture of said plate and said slide being sized and positioned such that when the rod is at its maximum desired extension from the blocks, the aperture and said slide are sufficiently aligned that a first end of said slide enters the aperture;a cable attached to a portion of said lap bar that moves farther from said slide as said lap bar is rotated toward a desired angle, with respect to said rod, to retain a person, said cable having a second end connected to a second end of said slide; anda means for changing the direction of a force oriented such that as said lap bar is rotated toward the desired angle, said cable, with its length being selected such that said slide will remain in the aperture until said lap bar is rotated but not after said lap bar has been rotated, pulls said slide from the aperture, thereby permitting the rod to be pushed farther into said blocks.2. The restraint as recited in claim 1, further comprising:a second rod lock;a second rod having a first end for insertion into said rod lock and also having a second end; anda shoulder bar attached to the second end of said second rod.3. The restraint as recited in claim 2, further comprising:a means for exerting a force away from said second rod lock and generally toward said shoulder bar, said means for exerting a force away from said second rod lock being connected to said second rod lock and to said shoulder bar.4. The restraint as recited in claim 3, wherein:said means for exerting a force away from said second rod lock comprises:a gas cylinder having a housing, a first end of a cylinder rod attached to a piston slidably mounted within a bore of the housing, containing pressurized gas on a side of the piston opposite to the side on which the cylinder rod is located, said gas cylinder being connected to said rod lock and having a second end of the cylinder rod attached to said shoulder bar.5. The restraint as recited in claim 3, wherein:said second rod lock is a locking apparatus.6. The restraint as recited in claim 5, wherein:said means for exerting a force away from said second rod lock comprises:a gas cylinder having a housing, a first end of a cylinder rod attached to a piston slidably mounted within a bore of the housing, containing pressurized gas on a side of the piston opposite to the side on which the cylinder rod is located, said gas cylinder being connected to said rod lock and having a second end of the cylinder rod attached to said shoulder bar.7. The restraint as recited in claim 3, wherein:said second rod lock is a hydraulic lock.8. The restraint as recited in claim 7, wherein:said means for exerting a force away from said second rod lock comprises:a gas cylinder having a housing, a first end of a cylinder rod attached to a piston slidably mounted within a bore of the housing, containing pressurized gas on a side of the piston opposite to the side on which the cylinder rod is located, said gas cylinder being connected to said rod lock and having a second end of the cylinder rod attached to said shoulder bar.9. The restraint as recited in claim 2, wherein:said second rod lock is a locking apparatus.10. The restraint as recited in claim 2, wherein:said second rod lock is a hydraulic lock.11. The restraint as recited in claim 1, further comprising:a second support structure;two additional blocks, each additional block containing an aperture with a center and having a first end and a second end and, between the first end of said additional block and the center of the aperture, being rotatably attached to said second support structure;a second rod having a first end, a second end, and a length, having a portion of said second rod beginning near the first end of second said rod vary periodically in thickness along the length of said second rod with the maximum periodic thickness being less than the minimum diameter of the aperture in said additional blocks, and having the second end of said second rod available for connection to a restraining device, said additional blocks being located at such a distance from one another that the aperture in one of said additional blocks will be at one of the points of minimum thickness of said second rod when the aperture in the other of said additional blocks is at one of the points of maximum thickness of said second rod, said second rod being removably inserted into the apertures of said additional blocks;a means for biasing said additional blocks;a second lever arm slidably mounted on said second support structure and connected to said additional blocks near the second end of each of said additional blocks;a second sheathed cable having the sheathing of said second cable attached to said second support structure and having said second cable connected to a first end of said second lever arm so that when said second cable pulls said second lever arm, the biasing of said additional blocks is reduced, allowing said second rod to be removed;a second gas cylinder having a housing, a first end of a cylinder rod attached to a piston slidably mounted within a bore of the housing of said second gas cylinder, containing pressurized gas on a side of the piston within the bore of the housing of said second gas cylinder opposite to the side on which the cylinder rod of said second gas cylinder is located, the housing of said second gas cylinder being connected to said second support structure; anda shoulder bar connected to the second end of said second rod and to a second end of said cylinder rod of said second gas cylinder.12. A restraint, which comprises:a hydraulic lock, which comprises:a housing having a bore, having a first end containing an aperture, and having a second end;a piston slidably mounted within the bore of said housing;a tube having a first end attached to said housing of said hydraulic lock at or nearer the first end of said housing of said hydraulic lock than said piston will ever be and communicating with the bore of said housing of said hydraulic lock and also having a second end attached to said housing of said hydraulic lock at or nearer the second end of said housing of said hydraulic lock than said piston will ever be and communicating with the bore of said housing of said hydraulic lock; anda valve in said tube at a location intermediate between the first end and the second end of said tube;a rod having a first end, a second end, and a length, said rod having a first end attached to said piston;a hinge attached to the second end of said rod;a lap bar having a first end attached to said hinge and having a second end angled so that such second end is generally parallel to said rod;a gas cylinder having a housing, a first end of a cylinder rod attached to a piston slidably mounted within a bore of the housing of said gas cylinder, containing pressurized gas on a side of the piston opposite to the side on which the cylinder rod is located, said gas cylinder being connected to said housing of said hydraulic lock and having a second end of the cylinder rod attached to said hinge;a spring;a plug biased by said spring to enter a cavity shaped to accommodate said plug within a first end of said lap bar;a stop attached to said housing of said hydraulic lock;a telescoping release rod having a first segment and a second segment with said first segment attached to said stop and with said second segment attached to said plug, said telescoping release rod having the length of the first segment and the length of the second segment selected such that when the rod has reached its maximum desired extension from the blocks, the stop will cause said release rod to pull said plug from the cavity;a plate having an aperture, said plate being rigidly attached to said housing of said hydraulic lock;a slide spring;a slide slidably mounted to said rod and oriented such that said slide spring urges a first end of said slide toward said plate, said plate constructed to be beside said slide throughout the movement of said rod, the aperture of said plate and said slide being sized and positioned such that when the rod is at its maximum desired extension from said hydraulic lock, the aperture and said slide are sufficiently aligned that a first end of said slide enters the aperture;a cable attached to a portion of said lap bar that moves farther from said slide as said lap bar is rotated toward a desired angle, with respect to said rod, to retain a person, said cable having a second end connected to a second end of said slide; anda means for changing the direction of a force oriented such that as said lap bar is rotated toward the desired angle, said cable, with its length being selected such that said slide will remain in the aperture until said lap bar is rotated but not after said lap bar has been rotated, pulls said slide from the aperture, thereby permitting the rod to be pushed farther into said hydraulic lock.13. The restraint as recited in claim 12, further comprising:a second hydraulic lock, which comprises:a housing having a bore, having a first end containing an aperture, and having a second end;a piston slidably mounted within the bore of said housing of said second hydraulic lock;a tube having a first end attached to said housing of said second hydraulic lock at or nearer the first end of said housing of said second hydraulic lock than said piston within the bore of said housing of said second hydraulic lock will ever be and communicating with the bore of said housing of said second hydraulic lock and also having a second end attached to said housing of said second hydraulic lock at or nearer the second end of said housing of said second hydraulic lock than said piston within the bore of said housing of said second hydraulic lock will ever be and communicating with the bore of said housing of said second hydraulic lock; anda valve in said tube of said second hydraulic lock, said valve in said tube of said second hydraulic lock being at a location intermediate between the first end and the second end of said tube of said second hydraulic lock;a second rod having a first end, a second end, and a length, said second rod having a first end attached to said piston within the bore of said housing of said second hydraulic lock;a second gas cylinder having a housing, a first end of a cylinder rod attached to a piston slidably mounted within a bore of the housing of said second gas cylinder, containing pressurized gas on a side of the piston within the bore of the housing of said second gas cylinder opposite to the side on which the cylinder rod of said second gas cylinder is located, said second gas cylinder being connected to said housing of said second hydraulic lock; anda shoulder bar connected to the second end of said second rod and to a second end of the cylinder rod of said second gas cylinder.14. A restraint, which comprises:an outer sleeve having an open first end, having a second end, and having a first side containing an aperture;an inner sleeve having a first end, a first wall containing and aperture, and a substantially open second end, said inner sleeve being slidably mounted within said outer sleeve;a support structure connected to said outer sleeve;two blocks, each block containing an aperture with a center and having a first end and a second end and, between the first end of said block and the center of the aperture, being rotatably attached to said support structure;a rod having a first end, a second end, and a length, having a portion of said rod beginning near the first end of said rod vary periodically in thickness along the length of said rod with the maximum periodic thickness being less than the minimum diameter of the aperture in said blocks, and having the second end of said rod connected to said inner sleeve, said blocks being located at such a distance from one another that the aperture in one of said blocks will be at one of the points of minimum thickness of said rod when the aperture in the other of said blocks is at one of the points of maximum thickness of said rod, said rod being removably inserted into the apertures of said blocks;a means for biasing said blocks;a hinge attached to said inner sleeve near the first end of said inner sleeve;a lap bar having a first end attached to said hinge and having a second end angled so that such second end is generally parallel to said rod;a lever arm slidably mounted on said support structure and connected to said blocks near the second end of each of said blocks;a sheathed cable having the sheathing of said cable attached to said support structure and having said cable connected to a first end of said lever arm so that when said cable pulls said lever arm, the biasing of said blocks is reduced, allowing said rod to be removed;a gas cylinder having a housing, a first end of a cylinder rod attached to a piston slidably mounted within a bore of the housing, containing pressurized gas on a side of the piston opposite to the side on which the cylinder rod is located, the housing of said gas cylinder being connected to said hinge and having a second end of the cylinder rod attached to said outer sleeve;a spring;a plug biased by said spring to enter a cavity shaped to accommodate said plug within a first end of said lap bar;a telescoping release rod having a first segment and a second segment with said first segment attached to the second end of said outer sleeve and with said second segment attached to said plug, said telescoping release rod having the length of the first segment and the length of the second segment selected such that when the rod has reached its maximum desired extension from the blocks, the second end of said outer sleeve will cause said release rod to pull said plug from the cavity;a slide spring;a slide slidably mounted to a first wall of said inner sleeve, said first wall of said inner sleeve sliding adjacent to the first side of said outer sleeve and oriented such that said slide spring urges a first end of said slide toward the first side of said outer sleeve, the first side of said outer sleeve being constructed to have a portion of the first side of said outer sleeve beside said slide throughout the movement of said rod, with the aperture in the first wall of said inner sleeve, the aperture in the first side of said outer sleeve, and said slide being sized and positioned such that when the rod is at its maximum desired extension from the blocks, the aperture in the first wall of said inner sleeve, the aperture in the first side of said outer sleeve, and said slide are sufficiently aligned that a first end of said slide enters the aperture in the first wall of said inner sleeve and the aperture in the first side of said outer sleeve;a cable attached to a portion of said lap bar that moves farther from said slide as said lap bar is rotated toward a desired angle, with respect to said rod, to retain a person, said cable having a second end connected to a second end of said slide; anda means for changing the direction of a force oriented such that as said lap bar is rotated toward the desired angle, said cable, with its length being selected such that said slide will remain in the aperture until said lap bar is rotated but not after said lap bar has been rotated, pulls said slide from the aperture in the first side of said outer sleeve, thereby permitting the rod to be pushed farther into said blocks.15. The restraint as recited in claim 14, further comprising:a C-channel;a wheeled cart having two or more wheels on a first side of said cart and two or more wheels on a second side of said cart with the wheels so spaced that some wheels will be within said C-channel while other sheels will be outside said C-channel;a second support structure connected to said C-channel;two additional blocks, each additional block containing an aperture with a center and having a first end and a second end and, between the first end of said additional block and the center of the aperture, being rotatably attached to said second support structure;a second rod having a first end, a second end, and a length, having a portion of said second rod beginning near the first end of second said rod vary periodically in thickness along the length of said second rod with the maximum periodic thickness being less than the minimum diameter of the aperture in said additional blocks, and having the second end of said second rod connected to said wheeled cart, said additional blocks being located at such a distance from one another that the aperture in one of said additional blocks will be at one of the points of minimum thickness of said second rod when the aperture in the other of said additional blocks is at one of the points of maximum thickness of said second rod, said second rod being removably inserted into the apertures of said additional blocks;a means for biasing said additional blocks;a second lever arm slidably mounted on said second support structure and connected to said additional blocks near the second end of each of said additional blocks;a second sheathed cable having the sheathing of said second cable attached to said second support structure and having said second cable connected to a first end of said second lever arm so that when said second cable pulls said second lever arm, the biasing of said additional blocks is reduced, allowing said second rod to be removed;a second gas cylinder having a housing, a first end of a cylinder rod attached to a piston slidably mounted within a bore of the housing of said second gas cylinder, containing pressurized gas on a side of the piston within the bore of the housing of said second gas cylinder opposite to the side on which the cylinder rod of said second gas cylinder is located, the housing of said second gas cylinder being connected to said C-channel with a second end of the cylinder rod of said second gas cylinder being connected to said wheeled cart; anda shoulder bar connected said wheeled cart.16. A restraint, which comprises:an outer sleeve having an open first end, having a second end, and having a first side containing an aperture;an inner sleeve having a first end, a first wall containing and aperture, and a substantially open second end, said inner sleeve being slidably mounted within said outer sleeve;a hydraulic lock connected to said outer sleeve, which hydraulic lock comprises:a housing having a bore, having a first end containing an aperture, and having a second end;a piston slidably mounted within the bore of said housing;a tube having a first end attached to said housing of said hydraulic lock at or nearer the first end of said housing of said hydraulic lock than said piston will ever be and communicating with the bore of said housing of said hydraulic lock and also having a second end attached to said housing of said hydraulic lock at or nearer the second end of said housing of said hydraulic lock than said piston will ever be and communicating with the bore of said housing of said hydraulic lock; anda valve in said tube at a location intermediate between the first end and the second end of said tube;a rod having a first end, a second end, and a length, said rod having a first end attached to said piston and;a hinge attached to said inner sleeve near the first end of said inner sleeve;a lap bar having a first end attached to said hinge and having a second end angled so that such second end is generally parallel to said rod;a gas cylinder having a housing, a first end of a cylinder rod attached to a piston slidably mounted within a bore of the housing of said gas cylinder, containing pressurized gas on a side of the piston opposite to the side on which the cylinder rod is located, said gas cylinder being connected to said hinge and having a second end of the cylinder rod attached to said outer sleeve;a spring;a plug biased by said spring to enter a cavity shaped to accommodate said plug within a first end of said lap bar;a telescoping release rod having a first segment and a second segment with said first segment attached to the second end of said outer sleeve and with said second segment attached to said plug, said telescoping release rod having the length of the first segment and the length of the second segment selected such that when the rod has reached its maximum desired extension from the blocks, the second end of said outer sleeve will cause said release rod to pull said plug from the cavity;a plate having an aperture, said plate being rigidly attached to said housing of said hydraulic lock;a slide spring;a slide slidably mounted to a first wall of said inner sleeve, said first wall of said inner sleeve sliding adjacent to the first side of said outer sleeve and oriented such that said slide spring urges a first end of said slide toward the first side of said outer sleeve, the first side of said outer sleeve being constructed to have a portion of the first side of said outer sleeve beside said slide throughout the movement of said rod, with the aperture in the first wall of said inner sleeve, the aperture in the first side of said outer sleeve, and said slide being sized and positioned such that when the rod is at its maximum desired extension from said hydraulic lock, the aperture in the first wall of said inner sleeve, the aperture in the first side of said outer sleeve, and said slide are sufficiently aligned that a first end of said slide enters the aperture in the first wall of said inner sleeve and the aperture in the first side of said outer sleeve;a cable attached to a portion of said lap bar that moves farther from said slide as said lap bar is rotated toward a desired angle, with respect to said rod, to retain a person, said cable having a second end connected to a second end of said slide; anda means for changing the direction of a force oriented such that as said lap bar is rotated toward the desired angle, said cable, with its length being selected such that said slide will remain in the aperture until said lap bar is rotated but not after said lap bar has been rotated, pulls said slide from the aperture in the first side of said outer sleeve, thereby permitting the rod to be pushed farther into said hydraulic lock.17. The restraint as recited in claim 16, further comprising:a C-channel;a wheeled cart having two or more wheels on a first side of said cart and two or more wheels on a second side of said cart with the wheels so spaced that some wheels will be within said C-channel while other sheels will be outside said C-channel;a second hydraulic lock connected to said C-channel, which second hydraulic lock comprises:a housing having a bore, having a first end containing an aperture, and having a second end;a piston slidably mounted within the bore of said housing of said second hydraulic lock;a tube having a first end attached to said housing of said second hydraulic lock at or nearer the first end of said housing of said second hydraulic lock than said piston within the bore of said housing of said second hydraulic lock will ever be and communicating with the bore of said housing of said second hydraulic lock and also having a second end attached to said housing of said second hydraulic lock at or nearer the second end of said housing of said second hydraulic lock than said piston within the bore of said housing of said second hydraulic lock will ever be and communicating with the bore of said housing of said second hydraulic lock; anda valve in said tube of said second hydraulic lock, said valve in said tube of said second hydraulic lock being at a location intermediate between the first end and the second end of said tube of said second hydraulic lock;a second rod having a first end, a second end, and a length, said second rod having a first end attached to said piston within the bore of said housing of said second hydraulic lock and having a second end connected to said wheeled cart;a second gas cylinder having a housing, a first end of a cylinder rod attached to a piston slidably mounted within a bore of the housing of said second gas cylinder, containing pressurized gas on a side of the piston within the bore of the housing of said second gas cylinder opposite to the side on which the cylinder rod of said second gas cylinder is located, the housing of said second gas cylinder being connected to said C-channel with a second end of the cylinder rod of said second has cylinder being connected to said wheeled cart; anda shoulder bar connected said wheeled cart.18. A restraint, which comprises:a support structure;two blocks, each block containing an aperture with a center and having a first end and a second end and, between the first end of said block and the center of the aperture, being rotatably attached to said support structure;a rod having a first end, a second end, and a length, having a portion of said rod beginning near the first end of said rod vary periodically in thickness along the length of said rod with the maximum periodic thickness being less than the minimum diameter of the aperture in said blocks, and having the second end of said rod available for connection to a restraining device, said blocks being located at such a distance from one another that the aperture in one of said blocks will be at one of the points of minimum thickness of said rod when the aperture in the other of said blocks is at one of the points of maximum thickness of said rod, said rod being removably inserted into the apertures of said blocks;a means for biasing said blocks;a hinge attached to the second end of said rod;a lap bar having a first end attached to said hinge and having a second end angled so that such second end is generally parallel to said rod;a lever arm slidably mounted on said support structure and connected to said blocks near the second end of each of said blocks;a block actuator having a housing and a block actuator rod with a second end, said block actuator housing being attached to said support structure with the second end of the block actuator rod being connected to said lever arm;an extension actuator having a housing and an extension actuator rod with a second end, said extension actuator housing being attached to said support structure with the second end of the extension actuator rod being attached to said hinge;a spring;a plug biased by said spring to enter a cavity shaped to accommodate said plug within a first end of said lap bar;a release actuator having a housing and a release actuator rod with a second end, said release actuator housing being attached to said hinge with the second end of the release actuator rod being attached to said plug so that said plug will be withdrawn from the cavity as the release actuator rod moves farther into the release actuator housing;a plate having an aperture, said plate being rigidly attached to said support structure;a slide spring;a slide slidably mounted to said rod and oriented such that said slide spring urges a first end of said slide toward said plate, said plate constructed to be beside said slide throughout the movement of said rod, the aperture of said plate and said slide being sized and positioned such that when the rod is at its maximum desired extension from the blocks, the aperture and said slide are sufficiently aligned that a first end of said slide enters the aperture;a cable attached to a portion of said lap bar that moves farther from said slide as said lap bar is rotated toward a desired angle, with respect to said rod, to retain a person, said cable having a second end connected to a second end of said slide; anda means for changing the direction of a force oriented such that as said lap bar is rotated toward the desired angle, said cable, with its length being selected such that said slide will remain in the aperture until said lap bar is rotated but not after said lap bar has been rotated, pulls said slide from the aperture, thereby permitting the rod to be pushed farther into said blocks.19. The restraint as recited in claim 18, further comprising:a second support structure;two additional blocks, each additional block containing an aperture with a center and having a first end and a second end and, between the first end of said additional block and the center of the aperture, being rotatably attached to said second support structure;a second rod having a first end, a second end, and a length, having a portion of said second rod beginning near the first end of second said rod vary periodically in thickness along the length of said second rod with the maximum periodic thickness being less than the minimum diameter of the aperture in said additional blocks, and having the second end of said second rod available for connection to a restraining device, said additional blocks being located at such a distance from one another that the aperture in one of said additional blocks will be at one of the points of minimum thickness of said second rod when the aperture in the other of said additional blocks is at one of the points of maximum thickness of said second rod, said second rod being removably inserted into the apertures of said additional blocks;a means for biasing said additional blocks;a second lever arm slidably mounted on said second support structure and connected to said additional blocks near the second end of each of said additional blocks;a second block actuator having a housing and a block actuator rod with a second end, said block actuator housing of said second block actuator being attached to said support structure with the second end of the block actuator rod of said second block actuator being connected to said lever arm;a second extension actuator having a housing and an extension actuator rod with a second end, said extension actuator housing of said second extension actuator being attached to said second support structure; anda shoulder bar connected to the second end of said second rod and to the second end of the cylinder rod of said second extension actuator.20. A restraint, which comprises:a hydraulic lock, which comprises:a housing having a bore, having a first end containing an aperture, and having a second end;a piston slidably mounted within the bore of said housing;a tube having a first end attached to said housing of said hydraulic lock at or nearer the first end of said housing of said hydraulic lock than said piston will ever be and communicating with the bore of said housing of said hydraulic lock and also having a second end attached to said housing of said hydraulic lock at or nearer the second end of said housing of said hydraulic lock than said piston will ever be and communicating with the bore of said housing of said hydraulic lock; anda valve in said tube at a location intermediate between the first end and the second end of said tube;a rod having a first end, a second end, and a length, said rod having a first end attached to said piston;a hinge attached to the second end of said rod;a lap bar having a first end attached to said hinge and having a second end angled so that such second end is generally parallel to said rod;an extension actuator having a housing and an extension actuator rod with a second end, said extension actuator housing being attached to said support structure with the second end of the extension actuator rod being attached to said hinge;a spring;a plug biased by said spring to enter a cavity shaped to accommodate said plug within a first end of said lap bar;a release actuator having a housing and a release actuator rod with a second end, said release actuator housing being attached to said hinge with the second end of the release actuator rod being attached to said plug so that said plug will be withdrawn from the cavity as the release actuator rod moves farther into the release actuator housing;a plate having an aperture, said plate being rigidly attached to said housing of said hydraulic lock;a slide spring;a slide slidably mounted to said rod and oriented such that said slide spring urges a first end of said slide toward said plate, said plate constructed to be beside said slide throughout the movement of said rod, the aperture of said plate and said slide being sized and positioned such that when the rod is at its maximum desired extension from said hydraulic lock, the aperture and said slide are sufficiently aligned that a first end of said slide enters the aperture;a cable attached to a portion of said lap bar that moves farther from said slide as said lap bar is rotated toward a desired angle, with respect to said rod, to retain a person, said cable having a second end connected to a second end of said slide; anda means for changing the direction of a force oriented such that as said lap bar is rotated toward the desired angle, said cable, with its length being selected such that said slide will remain in the aperture until said lap bar is rotated but not after said lap bar has been rotated, pulls said slide from the aperture, thereby permitting the rod to be pushed farther into said hydraulic lock.21. The restraint as recited in claim 20, further comprising:a second hydraulic lock, which comprises:a housing having a bore, having a first end containing an aperture, and having a second end;a piston slidably mounted within the bore of said housing of said second hydraulic lock;a tube having a first end attached to said housing of said second hydraulic lock at or nearer the first end of said housing of said second hydraulic lock than said piston within the bore of said housing of said second hydraulic lock will ever be and communicating with the bore of said housing of said second hydraulic lock and also having a second end attached to said housing of said second hydraulic lock at or nearer the second end of said housing of said second hydraulic lock than said piston within the bore of said housing of said second hydraulic lock will ever be and communicating with the bore of said housing of said second hydraulic lock; anda valve in said tube of said second hydraulic lock, said valve in said tube of said second hydraulic lock being at a location intermediate between the first end and the second end of said tube of said second hydraulic lock;a second rod having a first end, a second end, and a length, said second rod having a first end attached to said piston within the bore of said housing of said second hydraulic lock;a second extension actuator having a housing and an extension actuator rod with a second end, said extension actuator housing of said second extension actuator being attached to said hydraulic lock; anda shoulder bar connected to the second end of said second rod and to the second end of the extension actuator rod of said second extension actuator.22. A restraint, which comprises:an outer sleeve having an open first end, having a second end, and having a first side containing an aperture;an inner sleeve having a first end, a first wall containing and aperture, and a substantially open second end, said inner sleeve being slidably mounted within said outer sleeve;a support structure connected to said outer sleeve;two blocks, each block containing an aperture with a center and having a first end and a second end and, between the first end of said block and the center of the aperture, being rotatably attached to said support structure;a rod having a first end, a second end, and a length, having a portion of said rod beginning near the first end of said rod vary periodically in thickness along the length of said rod with the maximum periodic thickness being less than the minimum diameter of the aperture in said blocks, and having the second end of said rod connected to said inner sleeve, said blocks being located at such a distance from one another that the aperture in one of said blocks will be at one of the points of minimum thickness of said rod when the aperture in the other of said blocks is at one of the points of maximum thickness of said rod, said rod being removably inserted into the apertures of said blocks;a means for biasing said blocks;a hinge attached to said inner sleeve near the first end of said inner sleeve;a lap bar having a first end attached to said hinge and having a second end angled so that such second end is generally parallel to said rod;a lever arm slidably mounted on said support structure and connected to said blocks near the second end of each of said blocks;a block actuator having a housing and a block actuator rod with a second end, said block actuator housing being attached to said support structure with the second end of the block actuator rod being connected to said lever arm;an extension actuator having a housing and an extension actuator rod with a second end, said extension actuator housing being attached to said hinge with the second end of the extension actuator rod being attached to said outer sleeve;a spring;a plug biased by said spring to enter a cavity shaped to accommodate said plug within a first end of said lap bar;a release actuator having a housing and a release actuator rod with a second end, said release actuator housing being attached to said hinge with the second end of the release actuator rod being attached to said plug so that said plug will be withdrawn from the cavity as the release actuator rod moves farther into the release actuator housing;a slide spring;a slide slidably mounted to a first wall of said inner sleeve, said first wall of said inner sleeve sliding adjacent to the first side of said outer sleeve and oriented such that said slide spring urges a first end of said slide toward the first side of said outer sleeve, the first side of said outer sleeve being constructed to have a portion of the first side of said outer sleeve beside said slide throughout the movement of said rod, with the aperture in the first wall of said inner sleeve, the aperture in the first side of said outer sleeve, and said slide being sized and positioned such that when the rod is at its maximum desired extension from the blocks, the aperture in the first wall of said inner sleeve, the aperture in the first side of said outer sleeve, and said slide are sufficiently aligned that a first end of said slide enters the aperture in the first wall of said inner sleeve and the aperture in the first side of said outer sleeve;a cable attached to a portion of said lap bar that moves farther from said slide as said lap bar is rotated toward a desired angle, with respect to said rod, to retain a person, said cable having a second end connected to a second end of said slide; anda means for changing the direction of a force oriented such that as said lap bar is rotated toward the desired angle, said cable, with its length being selected such that said slide will remain in the aperture until said lap bar is rotated but not after said lap bar has been rotated, pulls said slide from the aperture in the first side of said outer sleeve, thereby permitting the rod to be pushed farther into said blocks.23. The restraint as recited in claim 22, further comprising:a C-channel;a wheeled cart having two or more wheels on a first side of said cart and two or more wheels on a second side of said cart with the wheels so spaced that some wheels will be within said C-channel while other sheels will be outside said C-channel;a second support structure connected to said C-channel;two additional blocks, each additional block containing an aperture with a center and having a first end and a second end and, between the first end of said additional block and the center of the aperture, being rotatably attached to said second support structure;a second rod having a first end, a second end, and a length, having a portion of said second rod beginning near the first end of second said rod vary periodically in thickness along the length of said second rod with the maximum periodic thickness being less than the minimum diameter of the aperture in said additional blocks, and having the second end of said second rod connected to said wheeled cart, said additional blocks being located at such a distance from one another that the aperture in one of said additional blocks will be at one of the points of minimum thickness of said second rod when the aperture in the other of said additional blocks is at one of the points of maximum thickness of said second rod, said second rod being removably inserted into the apertures of said additional blocks;a means for biasing said additional blocks;a second lever arm slidably mounted on said second support structure and connected to said additional blocks near the second end of each of said additional blocks;a second block actuator having a housing and a block actuator rod with a second end, said block actuator housing of said second block actuator being attached to said support structure with the second end of the block actuator rod of said second block actuator being connected to said lever arm;a second extension actuator having a housing and an extension actuator rod with a second end, said extension actuator housing of said second extension actuator being attached to said C-channel and with the second end of the extension actuator rod of said second extension actuator being connected to said wheeled cart; anda shoulder bar connected to said wheeled cart.24. A restraint, which comprises:an outer sleeve having an open first end, having a second end, and having a first side containing an aperture;an inner sleeve having a first end, a first wall containing and aperture, and a substantially open second end, said inner sleeve being slidably mounted within said outer sleeve;a hydraulic lock connected to said outer sleeve, which hydraulic lock comprises:a housing having a bore, having a first end containing an aperture, and having a second end;a piston slidably mounted within the bore of said housing;a tube having a first end attached to said housing of said hydraulic lock at or nearer the first end of said housing of said hydraulic lock than said piston will ever be and communicating with the bore of said housing of said hydraulic lock and also having a second end attached to said housing of said hydraulic lock at or nearer the second end of said housing of said hydraulic lock than said piston will ever be and communicating with the bore of said housing of said hydraulic lock; anda valve in said tube at a location intermediate between the first end and the second end of said tube;a rod having a first end, a second end, and a length, said rod having a first end attached to said piston and;a hinge attached to said inner sleeve near the first end of said inner sleeve;a lap bar having a first end attached to said hinge and having a second end angled so that such second end is generally parallel to said rod;an extension actuator having a housing and an extension actuator rod with a second end, said extension actuator housing being attached to said hinge with the second end of the extension actuator rod being attached to said outer sleeve;a spring;a plug biased by said spring to enter a cavity shaped to accommodate said plug within a first end of said lap bar;a release actuator having a housing and a release actuator rod with a second end, said release actuator housing being attached to said hinge with the second end of the release actuator rod being attached to said plug so that said plug will be withdrawn from the cavity as the release actuator rod moves farther into the release actuator housing;a plate having an aperture, said plate being rigidly attached to said housing of said hydraulic lock;a slide spring;a slide slidably mounted to a first wall of said inner sleeve, said first wall of said inner sleeve sliding adjacent to the first side of said outer sleeve and oriented such that said slide spring urges a first end of said slide toward the first side of said outer sleeve, the first side of said outer sleeve being constructed to have a portion of the first side of said outer sleeve beside said slide throughout the movement of said rod, with the aperture in the first wall of said inner sleeve, the aperture in the first side of said outer sleeve, and said slide being sized and positioned such that when the rod is at its maximum desired extension from said hydraulic lock, the aperture in the first wall of said inner sleeve, the aperture in the first side of said outer sleeve, and said slide are sufficiently aligned that a first end of said slide enters the aperture in the first wall of said inner sleeve and the aperture in the first side of said outer sleeve;a cable attached to a portion of said lap bar that moves farther from said slide as said lap bar is rotated toward a desired angle, with respect to said rod, to retain a person, said cable having a second end connected to a second end of said slide; anda means for changing the direction of a force oriented such that as said lap bar is rotated toward the desired angle, said cable, with its length being selected such that said slide will remain in the aperture until said lap bar is rotated but not after said lap bar has been rotated, pulls said slide from the aperture in the first side of said outer sleeve, thereby permitting the rod to be pushed farther into said hydraulic lock.25. The restraint as recited in claim 24, further comprising:a C-channel;a wheeled cart having two or more wheels on a first side of said cart and two or more wheels on a second side of said cart with the wheels so spaced that some wheels will be within said C-channel while other sheels will be outside said C-channel;a second hydraulic lock connected to said C-channel, which second hydraulic lock comprises:a housing having a bore, having a first end containing an aperture, and having a second end;a piston slidably mounted within the bore of said housing of said second hydraulic lock;a tube having a first end attached to said housing of said second hydraulic lock at or nearer the first end of said housing of said second hydraulic lock than said piston within the bore of said housing of said second hydraulic lock will ever be and communicating with the bore of said housing of said second hydraulic lock and also having a second end attached to said housing of said second hydraulic lock at or nearer the second end of said housing of said second hydraulic lock than said piston within the bore of said housing of said second hydraulic lock will ever be and communicating with the bore of said housing of said second hydraulic lock; anda valve in said tube of said second hydraulic lock, said valve in said tube of said second hydraulic lock being at a location intermediate between the first end and the second end of said tube of said second hydraulic lock;a second rod having a first end, a second end, and a length, said second rod having a first end attached to said piston within the bore of said housing of said second hydraulic lock and having a second end connected to said wheeled cart;a second extension actuator having a housing and an extension actuator rod with a second end, said extension actuator housing of said second extension actuator being attached to said C-channel and with the second end of the extension actuator rod of said second extension actuator being connected to said wheeled cart; anda shoulder bar connected to said wheeled cart.