Abstract A collapsible wheel chair the weight of which is of the order of 30 lbs and in its collapsed position its width is of the order of 7 1/2 inches. The chair comprises two tubular side frames each formed of a bottom rail and two top rails joined by a single front post and the front member of two rear posts, said side frames being coupled together by two tubular toggle members and a brace, each said toggle member comprising two U members articulated at the base of the U''s and having mounting sleeves on the ends of the U limbs, one said toggle member being mounted by said sleeves on the bottom rails between the front posts and the front members of the rear posts, the other said toggle member being mounted on the rear members of the rear posts, said brace being an articulated bar incorporating an off centre lock stop, a sleeve on each end of said brace, each sleeve mounted on a post between the respective top rails adjacent the front ends thereof; axle blocks one mounted on each pair of rear posts with an axle projecting outwardly therefrom, wheels each with a hand manoeuvering ring thereon and the hub offset outwardly mounted on the respective axles; castor wheels, a footrest, a seat and back rest are included.
A collapsible wheel chair comprising two tubular side frames each formed of a bottom rail and two top rails joined by a single front post and the front member of two rear posts, said side frames being coupled together by two tubular toggle members and a brace, each said toggle member comprising two U members articulated at the base of the U''s and having mounting sleeves on the ends of the U limbs, one said toggle member being mounted by said sleeves on the bottom rails between the front posts and the front members of the rear posts, the other said toggle member being mounted on the rear members of the rear posts, said brace being an articulated bar incorporating an off center lock stop, a sleeve on each end of said brace, each sleeve mounted on a post between the respective top rails adjacent the front ends thereof; axle blocks one mounted on each pair of rear posts with an axle projecting outwardly therefrom, wheels each with a hand manoeuvering ring thereon and the hub offset outwardly mounted on the respective axles; a castor wheel assembly mounted one on each front post; a footrest assembly mounted one on each of the front posts; an armrest assembly mounted one on each of the upper top rails; a seat fixed across the top rails and a back rest fixed to the back posts.
Claim 2
Dependent Claim
232 words
A collapsible wheel chair comprising two tubular side frames each formed of a bottom rail and two top rails joined by a single front post and the front member of two rear posts, said side frames being coupled together by two tubular toggle members and a brace, each said toggle member comprising two U members articulated at the base of the U''s and having mounting sleeves on the ends of the U limbs, one said toggle member being mounted by said sleeves on the bottom rails between the front posts and the front members of the rear posts, the other said toggle member being mounted on the rear members of the rear posts, said brace being an articulated bar incorporating an off center lock stop, a sleeve on each end of said brace, each sleeve mounted on a post between the respective top rails adjacent the front ends thereof; axle blocks one mounted on each pair of rear posts with an axle projecting outwardly therefrom, wheels each with a hand manoeuvering ring thereon and the hub offset outwardly mounted on the respective axles; a castor wheel assembly mounted one on each front post; a footrest assembly mounted one on each of the front posts; an armrest assembly mounted one on each of the upper top rails; a seat fixed across the top rails and a back rest fixed to the back posts.
Claim 3
Dependent Claim
52 words
A collapsible wheel chair as claimed in claim 1 wherein each U toggle member has a straight base and the limbs bent partly outwardly obliquely from the base then parallel and two U toggle members are articulated by hinges positioned to restrict movement to a chair expanded and to a collapsed position.
Claim 4
Dependent Claim
84 words
A collapsible wheel chair as claimed in claim 1 wherein each footrest unit comprises a foot plate part rotatably mounted on a spindle, a bracket on said spindle slidably mounted on a bent tube and a spring plunger in the bracket adapted for selective (height) engagement in one of a series of holes in said tube, a sleeve on said tube slidably and rotatably mounted on the front post, a positioning groove on said sleeve adapted to engage a stop on said front post.