Chairs and seats – Collapsible chair; i.e. – relatively folding bottom – back,... – Laterally collapsible
Patent
1976-03-01
1978-04-04
Frazier, Roy D.
Chairs and seats
Collapsible chair; i.e., relatively folding bottom, back,...
Laterally collapsible
297DIG4, B62M 114
Patent
active
040823482
ABSTRACT:
An adjustable wheel chair which facilitates independent seat height and width adjustments to accommodate varying wheel chair size needs. The wheel chair includes a pair of side frame assemblies transversely movable relative to each other between a first closed position with the side frame assembly closely spaced to each other and a second opened position with the side frame assembly spaced apart from each other. The side frame assemblies each include upper and lower frame members and means for selectively adjusting the distance between these members to vary the height of a seat disposed adjacent the upper frame members. First and second cross brace assemblies are pivotally connected to each other generally at their midpoints and mounted transversely between the side frame assemblies in a manner so as to form a collapsible X-like configuration. Each cross brace assembly includes means for selectively adjusting the length thereof to thereby permit adjustment of the distance between the side frame assemblies when they are in the second position to thereby vary the width of the seat and seat back areas. Each cross brace assembly includes a seat bar member at the uppermost end thereof and to which a flexible seat is mounted. The seat bar members are disposed immediately adjacent an associated one of the upper frame members when the side frame assemblies are in the second position and are spaced vertically above the associated upper frame member when the side frame assemblies are moved to the first position. Guide means are employed to guide the seat bar members as the side frame assemblies are moved between the first and second positions. The seat and a flexible seat back include means for releasably accommodating flexible spacer members when the seat and seat back areas are widened by adjusting the lengths of the cross brace assemblies. An adjustable head rest structure may also be included for the comfort of the wheel chair user.
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patent: 3853372 (1974-12-01), Meyer
patent: 3937490 (1976-02-01), Nasr
Aschenbrenner Peter A.
Frazier Roy D.
Invacare Corporation
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