Melvin E Pew Deceased211 Albert St, Beverly Manor, IL 61571
Melvin Pew Phones & Addresses
211 Albert St, Washington, IL 61571 309-6993296
Mentions for Melvin E Pew
Publications & IP owners
Us Patents
Wheelchair Elevating Apparatus Enabling A User To Lift Himself From The Floor To A Wheelchair Seat
US Patent:
4415202, Nov 15, 1983
Filed:
Oct 26, 1981
Appl. No.:
6/314753
Inventors:
Melvin E. Pew - Washington IL
International Classification:
A61G 708
US Classification:
297217
Abstract:
A forwardly extending elevating frame is pivoted at the rear of a wheelchair main frame for vertical tilting movement. A leveling frame extends rearwardly from a pivot connection at the forward end of the elevating frame for relative vertical tilting movement. A pair of chains extend downwardly from a suspension bar on the main frame, engage a pair of sprockets supported on the elevating and leveling frames, and are trained in loops about idlers carried on the two tiltable frames. A lifting seat is supported on and forwardly of the leveling frame and is tiltable between a horizontal use position and a hanging stored position. Hand levers, accessible to a person on the lifting seat, are movable up and down to rotate the sprockets through pawl and ratchet connections. This causes the sprockets to climb the chains and elevate the person on the lifting seat to the level of the wheelchair seat. As the sprockets climb the chains, the chain loops lengthen to compensate for tilting of the elevating frame, thereby keeping the lifting seat level through its entire elevating range.
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