Wheelchair steering

Details Wheelchair steering Wheelchair steering

1987-09-30

1989-08-01

Hill, Mitchell J.

Motor vehicles

Having four wheels driven

With means for steering all driven wheels

74471XY, 180333, 180907, 280 4711, 280 99, 2802501, B62D 708, A61G 504

Patent

active

048526797

ABSTRACT:
A powered wheelchair has at least two power-steered, driven wheels (15,16,17,18). Preferably, all of the wheels (15,16,17,18) are driven and power-steered such that the wheelchair turns about a point on a transverse axis (X) of the vehicle, and may preferably also pivot on the spot. This turning is preferably achieved by a rotatable steering assembly (1) having steering drive cams (3,4), steering return cams (5,6) and flexible transmission members (13,14).

REFERENCES:
patent: 3077354 (1963-02-01), Rateau
patent: 3134455 (1964-05-01), Fiorentini
patent: 3978738 (1976-09-01), Naulin
patent: 4403673 (1983-09-01), Ball
patent: 4519466 (1985-05-01), Shiraishi
patent: 4598782 (1986-07-01), Ilon
patent: 4634941 (1987-01-01), Klimo

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