Land vehicles – Wheeled – Occupant propelled type
Patent
1990-01-25
1991-06-11
Hill, Mitchell J.
Land vehicles
Wheeled
Occupant propelled type
280263, 280271, B62K 2110
Patent
active
050226711
ABSTRACT:
A hand propelled tricycle has a hand-operated crank assembly mounted to an upper end of a front fork stem coupled to a front wheel supported by the fork. The fork is straight without caster and a set of springs attached between the fork and a tricycle frame provides centering of the front wheel. A pair of spaced-apart wheels is mounted to an axle at the rear of the frame.
REFERENCES:
patent: 627639 (1899-06-01), Eames
patent: 4006915 (1977-02-01), Parker
patent: 4108460 (1978-08-01), Silva, Jr.
patent: 4695071 (1987-09-01), Johnston
patent: 4720117 (1988-01-01), Hay
Hill Mitchell J.
Wiggins Macdonald J.
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