Land vehicles – Wheeled – Occupant propelled type
Patent
1998-01-21
2000-01-25
Herrmann, Allan D.
Land vehicles
Wheeled
Occupant propelled type
74143, 748101, 7447328, 192215, 464 38, 280244, B62M 114, F16H 2912
Patent
active
060170468
ABSTRACT:
The invention comprises a drive system for use in association with a wheelchair. The drive system includes at least one input gear system, a structure for powering at least one input gear system, at least one transfer gear system, a positioning member, and a structure for transferring movement of the transfer gear system to a wheel. The positioning member positions the desired one of at least two sets of gears of the at least one transfer gear with at least one of the two sets of gears of the at least one input gear system through slidable movement of the at least one of the transfer gear system and the input gear system along their respective axes of rotation. This, in turn, engages the desired gear of the transfer gear system to the desired gear of the input gear system during continuous rotation of these gears. Additionally, the invention includes a handle member for use with a linear conversion system. Further, the invention includes a structure for preventing seizure of a linear conversion system in the event of an improper direction selection.
REFERENCES:
patent: 3563568 (1971-02-01), Sasse
patent: 4471972 (1984-09-01), Young
patent: 4560181 (1985-12-01), Herron
patent: 4583754 (1986-04-01), Seeliger
patent: 4758013 (1988-07-01), Agrillo
patent: 4993732 (1991-02-01), Wedemeyer
patent: 5167168 (1992-12-01), Beumer
patent: 5263729 (1993-11-01), Watwood et al.
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