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Patent Searching and Data


Title:
VEHICLE PROPULSION SYSTEM
Document Type and Number:
WIPO Patent Application WO2006062643
Kind Code:
A3
Abstract:
A human-powered vehicle (106) includes a driven wheel (180, 602) with a cantilevered hub (184, 386, 508, 625, 684), and a hand-operable crank (114, 264, 358, 621) for vehicle propulsion. In a wheelchair the hand cranks are supported on towers (108, 258, 356, 622) that are lowerable to fit under a desk or table. With the vehicle at rest, cranking motion of the crank in a first rotational direction propels the vehicle forward and cranking motion of the crank in a second rotational direction propels the vehicle backward. With the vehicle in forward motion, cessation of crank rotation allows free rotation of the wheel, and crank torque applied in a sense opposing forward vehicle motion applies a braking force to the wheel. An electric vehicle includes a transmission wheel hub (512) that provides similar functions with an electric drive (950), such as for a wheelchair (672).

Inventors:
LINDSAY STUART M (US)
MCMATH DAVID WINTERS (US)
WALKER MARK P (US)
Application Number:
PCT/US2005/040155
Publication Date:
August 03, 2006
Filing Date:
November 07, 2005
Export Citation:
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Assignee:
KUDHARA INC (US)
LINDSAY STUART M (US)
MCMATH DAVID WINTERS (US)
WALKER MARK P (US)
International Classes:
A61G5/02
Foreign References:
DE3537851A11987-04-30
DE19848634A12000-03-30
US4758013A1988-07-19
US4727965A1988-03-01
GB350878A1931-06-18
US5816598A1998-10-06
GB2134056A1984-08-08
US20040007400A12004-01-15
US6408691B12002-06-25
US5016720A1991-05-21
Other References:
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 12 25 December 1997 (1997-12-25)
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