Wheelchair

Land vehicles – Wheeled – Occupant propelled type

Patent

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Details

280649, 280657, 297DIG4, A61G 502

Patent

active

046765190

ABSTRACT:
A wheelchair has two foldable side frames, link members which cross one another and are pivotable about a common horizontal axis so as to fold the side frames, front wheels and rear wheels connected with the side frames, a back rest with upwardly extending back supporting members, a seat with seat supporting members which are movable upwardly and downwardly in dependence upon a folding movement, and a foot support with foot support carrying arms, wherein each side frame is provided with guide receivers for the seat supporting members, and with supports for the link members, and wherein a rear wheel axle block and the front support carrying arms are formed as a one-piece element of synthetic plastic material. Such side frames have a lower weight, but are stable nevertheless, and also result in an improved handling of the wheelchair.

REFERENCES:
patent: 3584890 (1971-06-01), Presty
patent: 4042250 (1977-08-01), Rodaway
patent: 4358125 (1982-11-01), Charles
patent: 4428594 (1984-01-01), Minnebraker
patent: 4500102 (1985-02-01), Haury
patent: 4542918 (1985-09-01), Singleton

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