Land vehicles – Wheeled – Extensible
Patent
1998-06-11
2000-10-17
Mar, Michael
Land vehicles
Wheeled
Extensible
2802501, 280 474, 297 39, A61G 502
Patent
active
061319406
ABSTRACT:
A structure for a collapsible wheelchair is provided in which the casters are each mounted on a four bar linkage pivoted from a cam actuated rotary lock mechanism on the frame of the chair.
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Kaliski Edward J.
Mar Michael
Phan Hau
LandOfFree
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