초록 ▼

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

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).

대표청구항 ▼

A powered wheelchair having a transverse axis, front and back left and front and back right wheels, all of said wheels being driven and power-steered, and a rotatable steering assembly for steering said wheels comprising a pair of steering drive cams, a pair of steering return cams, and first and se

A powered wheelchair having a transverse axis, front and back left and front and back right wheels, all of said wheels being driven and power-steered, and a rotatable steering assembly for steering said wheels comprising a pair of steering drive cams, a pair of steering return cams, and first and second flexible transmission members connecting one of said steering drive cams and one of said steering return cams to said left and right wheels respectively, so that the center of turning of said wheels lies on said transverse axis of said wheelchair said drive and return cams being differently shaped for differentially rotating said left and right wheels and moving center of turning to a position within the confines of the wheels responsive to rotation of the steering assembly through a predetermined angle.