초록 ▼

A steerable motorized power unit is constructed for detachable coupling to a conventional occupant propelled wheelchair in a manner such that it can be easily and conveniently coupled to, or uncoupled from, the chair by the occupant. Coupling pins are provided with mounting plates which can be fixed

A steerable motorized power unit is constructed for detachable coupling to a conventional occupant propelled wheelchair in a manner such that it can be easily and conveniently coupled to, or uncoupled from, the chair by the occupant. Coupling pins are provided with mounting plates which can be fixedly clamped to the tubular chair frame at a selected position without requiring any modification to the frame and without interfering with the normal operation of the chair.

대표청구항 ▼

In a steerable power drive unit adapted to be detachably coupled to a conventional, occupant-propelled, wheelchair having a pair of spaced frame portions adjacent the front of said chair at opposite sides thereof; said power drive unit having a main frame, a steerable ground engaging wheel operative

In a steerable power drive unit adapted to be detachably coupled to a conventional, occupant-propelled, wheelchair having a pair of spaced frame portions adjacent the front of said chair at opposite sides thereof; said power drive unit having a main frame, a steerable ground engaging wheel operatively mounted in said main frame, power drive means for driving said wheel in rotation, and coupling means for detachably coupling said unit to said chair; the improvement wherein said coupling means comprises a pair of coupling pins, mounting means for mounting said pins upon the respective aforementioned frame portions of a wheelchair to locate said pins in laterally coaxial horizontal alignment with each other at opposite sides of the chair, a pair of longitudinally extending side frame members fixedly mounted at their forward ends upon said main frame of said power unit and projecting rearwardly therefrom, handle means projecting upwardly from the rearward end of each of said side frame members, means defining a downwardly opening pin receiving recess on each side frame member adjacent the rearward end thereof, and releasable latch means on each side frame member movable from a retracted position clear of the recess on said member to a latching position extending across the lower end of said recess wherein said latch means is operable to retain one of said coupling pins within the recess.