Everest & Jennings, Inc.

Raymond P Lewandowski

Robert T McWethy

Robert W Reynolds

Larry A Sims

An improved wheelchair is constructed with a base frame formed from composite material tubing. The base frame comprises a pair of unitary side frames of composite material tubing which preferably has an elliptical cross section oriented to provide increased structural strength along a primary loading axis during normal use. The side frames are interconnected by a plurality of cross braces of composite material tubing, wherein the lengths of the cross braces can be selected in accordance with a desired wheelchair frame width. A folding seatback is mounted on the side frames for releasable locking in an upright orientation, with a pair of spring-loaded lock pins being releasable by pulling a pull cord to permit seatback folding to a collapsed condition.

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Ventura, CA, United States of America

Raymond P Lewandowski