Land vehicles – Wheeled – Occupant propelled type
Patent
1993-10-21
1997-02-25
Boehler, Anne Marie
Land vehicles
Wheeled
Occupant propelled type
2803041, 280650, 280 8721, 280 4739, 135 67, 297 5, B62M 114
Patent
active
056053452
ABSTRACT:
Wheeled apparatus (10) is usable both as a wheeled walker and as a wheelchair. The wheeled apparatus (10) includes a foldable frame (12 or 258), first (16A) and second (16B) transversely spaced-apart wheels that are attached to the frame (12 or 258) with a negative camber angle, a third wheel (24A) that is longitudinally spaced from the first (16A) and a second (16B) wheels and that is attached to the frame (12 or 258), and a seat cushion (97) that is attached to the frame (12 or 258). When used as a wheeled walker, bi-directional seat (101, 124, 146, or 162) provides rearward facing seating (186) for resting, and when used as a wheelchair, the bi-directional seating means (101, 124, 146, or 162) provides forward facing seating (187). Centers (94) of handgrips (82A and 82B) are disposed longitudinally intermediate of the first and second wheels (16A and 16B) and the third wheel (24A) to minimize danger of the wheeled apparatus (10) tipping backwardly when used as a wheeled walker. A negative camber angle of the first and second wheels (16A and 16B) minimizes danger of the wheeled apparatus (10) tipping sideways, and an asymmetrical folding mechanism (15 or 256) reduces or removes the negative camber angle when the foldable frame (12 or 258) is folded, thereby minimizing the required size of a shipping container.
REFERENCES:
patent: D277561 (1985-02-01), Erfurth
patent: D283884 (1986-05-01), Erfurth
patent: D293663 (1988-01-01), Erfurth
patent: D295155 (1988-04-01), Erfurth
patent: 1576075 (1926-03-01), Tisdell
patent: 3529700 (1970-09-01), Marshall
patent: 3997180 (1976-12-01), Okubo
patent: 4081051 (1978-03-01), Logsdon
patent: 4371183 (1983-02-01), Dion
patent: 4384732 (1983-05-01), Wierwille
patent: 4493488 (1985-01-01), Panaia
patent: 4643211 (1987-02-01), Morris et al.
patent: 4748994 (1988-06-01), Schultz et al.
patent: 4759562 (1988-07-01), Vinyard et al.
patent: 4863181 (1989-09-01), Howle
patent: 4907839 (1990-03-01), Rose et al.
patent: 5060967 (1991-10-01), Hulterstrum
patent: 5131672 (1992-07-01), Robertson et al.
Erfurth Ronald L.
Lautzenhiser Lloyd L.
Miller Wendell E.
Boehler Anne Marie
Brookefield Hunter Incorporated
Miller Wendell E.
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