Chairs and seats – Collapsible chair; i.e. – relatively folding bottom – back,... – Laterally collapsible
Patent
1981-07-27
1985-01-22
Zugel, Francis K.
Chairs and seats
Collapsible chair; i.e., relatively folding bottom, back,...
Laterally collapsible
297DIG4, A47C 428
Patent
active
044947917
ABSTRACT:
A folding wheelchair which incorporates two side frames, a first cross-brace connecting the two side frames, which first brace is foldable, and two staffs rotatably mounted on respective each side frame. The wheelchair also possesses a second cross-brace connecting the two staffs, with the second cross-brace being constituted of two parts swivable about a common axis whereby the wheelchair is of lightweight and rigid construction.
REFERENCES:
patent: 2927631 (1960-03-01), Andersson et al.
patent: 3968991 (1976-09-01), Maclaren
patent: 4076304 (1978-02-01), Deucher
patent: 4317581 (1982-03-01), Kassai
patent: 4362315 (1982-12-01), Kassai
patent: 4386790 (1983-06-01), Kassai
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