Wheelchair drive unit

Details Wheelchair drive unit Wheelchair drive unit

2005-03-01

2005-03-01

Ellis, Christopher P. (Department: 3618)

Motor vehicles

Motor-carrying attachments

C180S012000, C180S015000, C280S304100

Reexamination Certificate

active

06860347

ABSTRACT:
An electric drive attachment for a wheelchair comprising a drive housing containing an electric motor, a drive wheel which touches the ground and drives the wheelchair through frictional contact with the ground and speed reducing mechanism between the motor and drive wheel, attachment structure to attach the wheelchair drive unit to the wheelchair as a pair of clamps one on each side of the frame. Also included are torque dampening systems to reduce the shock of starting the motor, a clutch which enables manual forward movement of a wheelchair without engagement of the motor and without dragging of the drive wheel, an under run wheel and positive pressurization of the gear works and area surrounding the drive wheel to keep the housing free of debris.

REFERENCES:
patent: 2495573 (1950-01-01), Duke
patent: 2544831 (1951-03-01), Guyton
patent: 3905437 (1975-09-01), Kaiho et al.
patent: 4386672 (1983-06-01), Coker
patent: 4759418 (1988-07-01), Goldenfeld et al.
patent: 4962942 (1990-10-01), Barnett et al.
patent: 5016720 (1991-05-01), Coker
patent: 5113959 (1992-05-01), Mastov et al.
patent: 5135063 (1992-08-01), Kropf
patent: 5222567 (1993-06-01), Broadhead et al.
patent: 5291959 (1994-03-01), Malblanc
patent: 5351774 (1994-10-01), Okamoto
patent: 5494126 (1996-02-01), Meeker
patent: 5651422 (1997-07-01), Casali
patent: 5826670 (1998-10-01), Nan
patent: 6334497 (2002-01-01), Odell
patent: 6360836 (2002-03-01), Milano et al.
patent: 6481514 (2002-11-01), Takada
patent: 6578860 (2003-06-01), Chang
patent: 6702051 (2004-03-01), Chu et al.
patent: 6729422 (2004-05-01), Chu et al.
patent: 0236029 (1987-09-01), None
patent: 0419085 (1990-09-01), None
patent: 2223994 (1990-04-01), None

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