Center of gravity wheelchair with articulated chassis

Details Center of gravity wheelchair with articulated chassis Center of gravity wheelchair with articulated chassis

1980-05-15

1982-01-12

Peters, Jr., Joseph F.

Land vehicles

Step or abutment ascending type vehicle

Relatively movable running gear portions

280 4716, 280242WC, B62B 902, B62M 100

Patent

active

043101674

ABSTRACT:
A center of gravity wheelchair with an articulated chassis front and rear caster wheels, in which the main wheels and front and rear caster wheels are arranged in a diamond pattern, and the main wheels and rear caster wheel are carried by a subframe to form a bogie system, with the seat and front caster wheel carried by a seat frame assembly articulated with respect to the subframe through a pivoted link arrangement, whereby the seat may be moved forward relative to the main wheels, with a spring and damper connected between the subframe and seat frame assembly to minimize the tendancy for the front caster wheel to lift off the ground when the main wheels are strongly propelled and to provide a shock absorbing structure for traversing rough ground. The diamond pattern provided by the wheels prevents lateral drift of the wheel chair when traversing sloping surfaces, and the articulated frame permits easier curb climbing.

REFERENCES:
patent: 2285699 (1942-06-01), Everest et al.
patent: 2986200 (1961-05-01), Nobile
patent: 3104112 (1963-07-01), Crail
patent: 3191990 (1965-06-01), Rugg et al.
patent: 3580591 (1971-05-01), Coffey
patent: 3848883 (1974-11-01), Breacain
patent: 3901527 (1975-08-01), Danziger et al.
patent: 3953054 (1976-04-01), Udden et al.
patent: 4108449 (1978-08-01), Rhodes
patent: 4245847 (1981-01-01), Knott

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