Wheelchair drive mechanism

Land vehicles – Wheeled – Occupant propelled type

Reexamination Certificate

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Details

C280S250100

Reexamination Certificate

active

11094740

ABSTRACT:
A wheelchair which shifts between forward and reverse by virtue of a roller mechanism which grabs in one direction and slips an opposite direction, thereby preventing binding. The shift mechanism is initiated by rotation of a shift paddle which is located on a extremity of a lever arm remote from the roller mechanism.

REFERENCES:
patent: 4865344 (1989-09-01), Romero et al.
patent: 5020815 (1991-06-01), Harris et al.
patent: 5632499 (1997-05-01), Hutcherson et al.
patent: 6234504 (2001-05-01), Taylor
patent: 6893035 (2005-05-01), Watwood et al.

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