Power assist device for a wheelchair
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United States of America Patent
Stats
-
Jun 29, 1993
Grant Date -
N/A
app pub date -
Apr 26, 1991
filing date -
Apr 26, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A power assist device for a wheelchair comprising a body, a drive wheel connected to the body and being movable between a raised position and a lowered surface engaging position, attachments for securing the body to the frame, a first motor for driving said drive wheel at least when the drive wheel is in the lowered surface engaging position, a second motor connected to the drive wheel for raising and lowering said drive wheel, a biaser, for biasing the drive wheel into surface engaging driving contact, a manually initiated electronic controller for controlling the power assist device, and a source of electrical power.
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Family
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