Everest & Jennings, Inc.

Robert W Reynolds

Spencer L Mackay

Cleve A Graham

Elaine M Nesterick

Robert T McWethy

Larry A Sims

Raymond P Lewandowski

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.

Composite frame wheelchair

Electrically powered three wheeled vehicle

A modular power drive scooter, including as modular components a seat, a seat post, a mainframe, a trailer and at least one battery, is built in a manner allowing quick and easy disassembly of the scooter for compact storage. In assembled form, the seat post supports the seat and also serves as a lock pin which prevents separation of the mainframe from the trailer. The mainframe includes a front wheel, a tiller assembly for steering the scooter, and recesses for accommodating one or more batteries. The trailer includes a pair of rear wheels coupled to a differential which is driven by an electric motor, and a removable storage tray that provides access to the motor. A stem member extending from the trailer engages the mainframe in an overlapping relation whereby apertures in the stem member align with ports in the mainframe. The seat post is inserted into a selected port to determine the spacing of the seat from the tiller assembly. Removal of the seat post from an aligned aperture and port enables the mainframe and the trailer to be separated by pulling a first handle located on the stem member to pivot the trailer relative to the mainframe, and then by lifting the mainframe by a second handle to disengage coupling hooks on the mainframe from a coupling rod of the trailer.

Power drive scooter

Growing community of inventors

Camarillo, CA, United States of America

Robert W Reynolds