Land vehicles – Wheeled – Stable vehicles – handle-propelled
Reexamination Certificate
2006-05-30
2006-05-30
Ellis, Christopher P. (Department: 3618)
Land vehicles
Wheeled
Stable vehicles, handle-propelled
C280S647000, C280S250100, C280S649000, C280S650000, C280S047400, C280S304100, C297S061000, C297S391000
Reexamination Certificate
active
07052023
ABSTRACT:
A wheel chair includes wheel frames which can be adjusted up and down, moving devices and brake devices are connected to two respective sides of the two wheel frames. Support devices are connected to the wheel frames so as to adjust the depth of the wheel frames to which arm rest devices are connected. A folding device is connected between the wheel frames and an assistant device is connected to the folding device. A positioning device is connected to the assistant device so that the wheel chair can be adjusted in many ways to meet different needs of users. The modularized devices effectively reduce manufacturing cost of the wheel chair.
REFERENCES:
patent: 4098521 (1978-07-01), Ferguson et al.
patent: 4768622 (1988-09-01), Nicklasson et al.
patent: 4962942 (1990-10-01), Barnett et al.
patent: 5188383 (1993-02-01), Thompson
patent: 6578860 (2003-06-01), Chang
Chen Zen-Jye
Chung Wen-Huei
Lin Hsiang-Suen
Aerospace Industrial Development Corporation
Collado Cynthia F.
Ellis Christopher P.
Rosenberg , Klein & Lee
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