Non-tipping tricycle having releasable locking mechanism between

Details Non-tipping tricycle having releasable locking mechanism between Non-tipping tricycle having releasable locking mechanism between

1997-06-26

1999-08-24

Mai, Lanna

Land vehicles

Wheeled

Occupant propelled type

280266, 280271, 280272, B62K 504

Patent

active

059415487

ABSTRACT:
A tricycle has two non-steerable rear wheels connected to a rear frame structure, and a single steerable front wheel connected to a front frame structure. The front frame structure includes a horizontal tubular frame element extending underneath the rear frame structure for swingable connection to the rear frame structure, such that the front frame structure can lean away from a normal upright position centered between the rear wheels. During a turning maneuver the leaning capability is advantageous in maintaining the rear wheels in pressure contact with the road surface so as to enhance the stability of the tricycle. A manually-operated locking mechanism is provided for releasably locking the front frame structure in its normal upright centered position. The locking mechanism keeps the front frame structure in a stable mode when the person is mounting or dismounting the tricycle, and also when the tricycle is being driven at low speeds in which there is minimal danger of the tricycle tipping or overturning.

REFERENCES:
patent: 3698502 (1972-10-01), Patin
patent: 4006916 (1977-02-01), Patin
patent: 4159752 (1979-07-01), Kanno
patent: 4674761 (1987-06-01), Kassai
patent: 4892323 (1990-01-01), Oxford
patent: 5240267 (1993-08-01), Owsen
patent: 5611555 (1997-03-01), Vidal

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