A position-sensitive shock absorbing device with a single cast body construction is provided. The device has a tubular member, a moveable piston within the tubular member, a first hydraulic fluid chamber defined by an interior volume of the tubular member, a bypass member attached to an outside area
A position-sensitive shock absorbing device with a single cast body construction is provided. The device has a tubular member, a moveable piston within the tubular member, a first hydraulic fluid chamber defined by an interior volume of the tubular member, a bypass member attached to an outside area of the tubular member. The bypass member surrounds a portion of the tubular member and a second hydraulic fluid chamber is defined by a volume between the tubular member and the bypass member. A first and a second opening in a side of the tubular member are arranged such that the openings are fluidly connected with each other and with both the first and second hydraulic fluid chamber.
대표청구항▼
1. A shock absorbing device comprising:a cylindrical wall that defines a hydraulic fluid chamber;a moveable piston positioned within said hydraulic fluid chamber;a first and a second opening defined in a side of said cylindrical wall;a bypass channel formed on an outside area of said cylindrical wal
1. A shock absorbing device comprising:a cylindrical wall that defines a hydraulic fluid chamber;a moveable piston positioned within said hydraulic fluid chamber;a first and a second opening defined in a side of said cylindrical wall;a bypass channel formed on an outside area of said cylindrical wall, said bypass channel being in fluid communication with said hydraulic fluid chamber through said first and second openings, and said first and second openings being in fluid communication with each other through said bypass channel; anda rebound control device, said device being positioned between said first and second openings such that said rebound control device allows hydraulic fluid to flow from said first opening to said second opening but restricts hydraulic fluid from flowing from said second opening to said first opening, said rebound control device comprising:a ball valve positioned in said bypass channel;a ball valve seat positioned in said bypass channel between said first and second openings; anda blocking member positioned in said bypass channel, whereby hydraulic fluid displaced by said piston into said first opening can displace said ball valve and said blocking member and bypass through said second opening to said hydraulic fluid chamber, but hydraulic fluid displaced by said piston into said second opening forces said ball valve into said ball valve seat and said blocking member substantially prevents hydraulic fluid from bypassing through said first opening to said hydraulic fluid chamber.2. A shock absorbing device according to claim 1, wherein said rebound control device is an automatic check valve.3. A shock absorbing device according to claim 1, wherein said shock absorber is integrally formed as a single cast body.4. A shock absorbing device according to claim 3, wherein said piston is a vented piston.5. A shock absorbing device comprising:a cylindrical wall that defines a hydraulic fluid chamber having first and second ends;a bypass channel formed on an outside area of said cylindrical wall;first and second openings defined in a side of the cylindrical wall and extending between the hydraulic fluid chamber and the bypass channel to provide fluid communication there between; anda moveable piston positioned within the hydraulic fluid chamber and movable from a first position at the first end of the hydraulic fluid chamber, to a second position between the first and second ends of the hydraulic chamber and between the first and second openings, to a third position at the second end of the hydraulic chamber spaced axially from between the first and second openings;a valve member positioned within the bypass channel and movable between a first position between the first and second openings and a second position removed from between the first and second openings.6. The shook absorbing device of claim 5, wherein the valve member permits hydraulic fluid flow from the first to the second opening and restricts hydraulic fluid flow from the second to the first opening.7. The shock absorbing device of claim 5, wherein the bypass channel provides circulation of hydraulic fluid within the hydraulic fluid chamber between opposing sides of the piston as the piston moves within the hydraulic fluid chamber.8. A method of absorbing shock with a shock absorbing device that includes a cylindrical wall that defines a fluid chamber of the shock absorbing device, the fluid chamber having first and second ends, first and second openings defined in the cylindrical wall, a movable piston positioned in the fluid chamber, a valve member, and a bypass channel positioned outside of the cylindrical wall and in fluid communication with the fluid chamber only through the first and second openings, the method comprising:positioning the valve member within the bypass channel and moving the valve member in response to movement of the piston; andmoving the piston axially in that portion of the fluid chamber defined between the first and second openings, wherein moving the piston in a direction from the first end towards the second end of the fluid chamber moves the valve member to a position removed from between the first and second openings to permit fluid flow through the bypass channel from the first opening to the second opening, and moving the piston in a direction from the second end towards the first end of the fluid chamber moves the valve member to a position between the first and second openings to restrict fluid flow in the bypass channel.9. The method of claim 8, wherein the valve member includes a ball, a biasing member, and a blocking member, and moving the valve member includes moving the ball and blocking member against biasing forces of the biasing member.10. A shock absorbing device comprising:a cylindrical wall that defines a hydraulic fluid chamber;a piston positioned within to hydraulic fluid chamber;first and second openings defined in a side of the cylindrical wall;a bypass channel formed on an outside area of the cylindrical wall, the bypass channel being in fluid communication with the hydraulic fluid chamber through the first and second openings, the bypass channel including a valve seat positioning between the first and second openings; anda rebound control device positioned in the bypass channel, the rebound control device including a valve member and a biasing member, the biasing member biasing the valve member against the valve seat to restrict hydraulic fluid flow from the second opening to the first opening when the piston is in a first position in the hydraulic fluid chamber, and when the piston moves into a second position in the hydraulic fluid chamber it moves the valve member via fluid pressure against the biasing member into a position removed from between the first and second openings.11. The device of claim 10, wherein the first piston position is a position in the hydraulic fluid chamber removed from between the first and second openings and the second piston position is a position in the hydraulic fluid chamber between the first and second openings.12. The device of claim 10, wherein the rebound control device further includes a blocking member positioned in the bypass channel between the valve member and the biasing member, the blocking member being movable between a position restricting hydraulic fluid flow through the second opening and another position not restricting hydraulic fluid flow through the second opening.
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