Medical Composite Technology

Everest & Jennings International, Ltd.

Neville Page

Richard T Geiger

A Scott Robertson

A foldable wheelchair has a folding mechanism connecting two side frame assemblies to each other. The side frame assemblies each support a castor frame piece, pivoting shafts of the folding mechanism, drive wheel axles and a seat back tube. The side frame assemblies are made of two halves that are secured together and may be fabricated from compression or injection molded composite plastics. The seat angle is adjusted by pivoting the side frame assemblies around a pivot point located in an upward and forward region of the side frame assembly.

Foldable wheelchair and side frame assembly for foldable wheelchair

A wheelchair frame assembly is provided with a foot rest mounting assembly and a caster mounting assembly that are mounted on side frame assemblies. The foot rest mounting assembly includes two foot plate mounting bars connected to respective side frame assemblies for mounting a foot plate. The foot plate mounting bars are positioned such that they angle inwardly towards one another to provide support for the lower portions of the legs and to allow easier movement into tight spaces. A foot plate is mounted to the end of each foot plate mounting bar in a manner that compensates for the obliquely downwardly extending and inwardly tapered nature of the foot plate mounting bar. The caster mounting assembly includes a fork that is provided with a plurality of holes for mounting casters of progressively greater diameter and for providing greater trail for progressively greater diameter casters. The wheelchair frame is also constructed to permit adjustment of the seat pan angle without changing the caster alignment and without altering the position of the drive wheel axles. The wheelchair can be constructed by attaching one of several different rear frame portions to a common side frame assembly in order to vary the cost and the performance characteristics of the wheelchair.

Wheelchair frame assembly and components for use thereon

A foldable wheelchair having a folding mechanism connecting two side frame assemblies to each other. The side frame assembly supports a castor frame piece, pivoting shafts of the folding mechanism, drive wheel axles and a seat back tube. The side frame assemblies are made of two halves that are secured together and may be fabricated from compression or injection molded composite plastics. The seat angle is adjusted by pivoting the side frame assemblies around a pivot point located in an upward and forward region of the side frame assembly.

Foldable wheelchair and side frame assembly

A multipurpose patient support surface is provided with support surface segments connected to one another in series. The segments are formed of a sandwich laminate including a top and a bottom load bearing skin layer separated by a core material. The segments are connected to one another at transverse edges by a hinge area and are locked in position relative to one another to form substantially planar support surface.

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San Francisco, CA, United States of America

Neville Page