The United States of America, as Represented by the Department of Veterans Affair
대리인 / 주소
Gorman Law Offices
인용정보
피인용 횟수 :
1인용 특허 :
29
초록▼
The present invention relates to a novel approach to improving the use of wheelchairs by offering the ability for the wheelchair to transition between accommodation for a seated position, and accommodation for a standing position, more particularly, wherein the inventive mobile manual standing wheel
The present invention relates to a novel approach to improving the use of wheelchairs by offering the ability for the wheelchair to transition between accommodation for a seated position, and accommodation for a standing position, more particularly, wherein the inventive mobile manual standing wheelchair allows for a standing position during the course of mobile use, and which also permits the user to traverse narrow entrances and doorframes, and also allows the user to have improved access in front for elevated surfaces such as countertops and the like.
대표청구항▼
1. A manually propelled standing wheelchair comprising: a chassis having a front portion, a rear portion, a center portion, a left portion, a right portion, a top portion, and a bottom portion;at least two ground drive wheels, one of said two ground drive wheels being disposed on said left portion o
1. A manually propelled standing wheelchair comprising: a chassis having a front portion, a rear portion, a center portion, a left portion, a right portion, a top portion, and a bottom portion;at least two ground drive wheels, one of said two ground drive wheels being disposed on said left portion of said chassis, and one of said two ground drive wheels being disposed on said right portion of said chassis;a rotating structure, comprising a left rotating structure and a right rotating structure, wherein each of said left rotating structure and said right rotating structure is attached, respectively, to said left portion and said right portion of said chassis;an adjustment actuator for raising and lowering at least a portion of said chassis between a seated position and a standing position and any intermediate positions therebetween;at least two user propulsion wheels, each laterally outset relative to said chassis and affixed proximate to said rotating structure, one of said at least two user propulsion wheels being rotatably affixed to said left rotating structure, and one of said at least two user propulsion wheels being rotatably affixed to said right rotating structure;a linkage system connecting one of said at least two user propulsion wheels with one of said two ground drive wheels at said left portion of said chassis, and another linkage system connecting one of said at least two user propulsion wheels with one of said two ground drive wheels at said right portion of said chassis;directional support wheels rotatably affixed to a foot rest which is affixed to a frontal extension disposed at said front portion of said chassis, wherein said directional support wheels include a caster structure for affixment of said directional support wheels to said foot rest, and said frontal extension retracts said foot rest and said directional support wheels off the ground during seated operation, and lowers said foot rest and said direction support wheels to contact the ground during standing operation;a set of stabilizing rear wheels situated structurally opposite said directional support wheels; andwherein each said at least two ground drive wheels is rotatably affixed to said center portion of said chassis, respectively, adjacent said left portion and said right portion between said directional support wheels and said stabilizing rear wheels, as a means for maintaining a stable center of gravity of said wheelchair at said center portion of said chassis and for focusing a locus of force at each said ground drive wheels at said center portion of said chassis during both seated operation and standing operation. 2. The standing wheelchair according to claim 1, further including a convertible user support section affixed to said chassis, said convertible user support section converting to a seat during seated operation, and transitioning to a standing support during standing operation, said convertible user support section extendable from a seated position to a standing position that, at its maximum standing position extension, ranges from 0 degrees to 15 degrees off of a vertical coronal plane of said wheelchair. 3. The standing wheelchair according to claim 2, wherein said linkage system is an auto tensioning linkage system and comprises at least one left link on said left side of said chassis, and at least one right link on said right side of said chassis, said auto tensioning linkage system includes at least one spring loaded sprocket respectively, each on said left side and on said fight side, wherein auto tensioning of each said at least one spring loaded sprocket respectively maintains tension on said left link and right link, such that each said left link and right link has a range of functional bending from 0° up to, and including 180°. 4. The standing wheelchair according to claim 3, wherein said at least one left link and said at least one right link are each operatively covered by a linkage guard on said left portion and said right portion, respectively. 5. The standing wheelchair according to claim 4, wherein said chassis further includes, on said left portion, and said right portion, a mated protective frame portion that cooperatively mates up with said linkage guard when said wheelchair is in standing operation. 6. The standing wheelchair according to claim 5, wherein said at least two user propulsion wheels follow said left rotating structure and said right rotating structure, independent of convertible user support section, when transitioning between seated operation and standing operation, said left rotating structure and said right rotating structure maintaining alignment of user shoulders and positioning of user arms when said standing wheelchair is in either a seated operation or a standing operation, and when in standing operation, said left rotating structure and said right rotating structure being adjustable by a standing space adjustment offset. 7. The standing wheelchair according to claim 6, wherein each of said at least two ground drive wheels is rotatably affixed such that said locus of force migrates only fore and aft, during a transition between seated operation and standing operation, a distance such that a load distribution on said at least two ground drive wheels is at least 60% of said load distribution. 8. The standing wheelchair according to claim 7, wherein each of said at least two ground drive wheels is laterally and medially inset relative to said chassis. 9. The standing wheelchair according to claim 8, wherein said user propulsion wheels each include at least two user propulsion rims, one user propulsion rim having a small diameter and the other having a large diameter, concentrically mounted on each respective said user propulsion wheel, along a same axis as said propulsion wheels, for providing both forward and reverse propulsion when said user propulsion wheel is pushed in either a forward or backwards direction, and for changing gearing without a user operated gear switch for switching between forward and reverse propulsion. 10. The standing wheelchair according to claim 9, wherein each of said user propulsion wheels can rotate downward and lower than said seat such that a user can perform a side exit-type transition.
Goldenfeld Ilia V. (14/16 Rehov Meir Nakar Jerusalem ILX) Mautner Yehezkel (Hamapilim Street 18 Jerusalem ILX) Mastov Eduard (Rivka Street ; 5a/3 Jerusalem ILX), Wheelchair drive.
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