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US 8,408,343 B2Granted
Powered wheelchair configurations and related methods of use
AssigneePride Mobility Products Corporation
InventorsJohn Puskar-Pasewicz, Kip D. Alder
Life of this patent
Estimating the term…
Abstract
A wheelchair includes a frame, a chair, a pair of drive wheels, a pair of rear wheels, and a pair of front wheels. Each front wheel is part of a front arm assembly that is rigidly coupled to a drive via a mounting plate. The mounting plate is connected to the wheelchair frame by a pivot. The drives are transversely mounted. The batteries are disposed rearward of the drives. The wheelchair seat can be moved forward to provide access to the batteries without fully removing the wheelchair from the frame.
Claims10
A wheelchair comprising:
- a frame;
- a drive wheel defining a drive wheel axis a mounting plate pivotally coupled to the frame at a pivot axis, the pivot axis being positioned forward of the drive wheel axis;
- a mounting plate pivotally coupled to the frame at a pivot axis, the pivot axis being positioned forward of the drive wheel axis;
- a drive operatively coupled to the drive wheel and affixed to the mounting plate;
- a forward-extending front arm rigidly extending from the mounting plate such that the mounting plate, drive, and front arm are together configured to pivot about the pivot axis;
- a front wheel rotatably coupled to the front arm, the front wheel defining a front wheel axis, wherein a vertical position of the pivot axis with respect to the ground plane is spaced from and positioned relatively below a line drawn between the drive wheel axis and the front wheel axis when the drive wheels and front wheels are on level ground,
- whereby motor torque biases the front wheel.
4 more elements
Dependencies are inferred from the claim text.