Wheelchair wheel system

The wheelchair wheel system addresses play and maneuverability issues by integrating the freewheel inner ring and handrail extension with a tubular element, using a single main shaft and conical surfaces for axial translation, enhancing user control and safety with simplified mounting and assembly.

FR3139462B1Active Publication Date: 2026-06-05EPPUR
0 Cites 0 Cited by

Patent Information

Application Number
FR2022009202
Authority / Receiving Office
FR · FR
Patent Type
Patents
Current Assignee / Owner
Filing Date
2022-09-13
Publication Date
2026-06-05
Estimated Expiration
2042-09-13

AI Technical Summary

Technical Problem

Existing wheelchair wheel systems suffer from significant play and maneuverability issues due to the relative rotation of shaft segments, requiring complex mounting and frequent disassembly for component replacement, leading to a feeling of insecurity and reduced user control.

Method used

A wheelchair wheel system with a tubular element that integrates the freewheel inner ring, handrail extension, and locking piece, allowing for a single main shaft compatible with various wheelchair frames, reducing play and simplifying mounting by using a coupling member with conical surfaces for axial translation and a freewheel with locked and free rotation rings.

Benefits of technology

The system reduces play and simplifies mounting, enhances maneuverability, and improves user safety by ensuring immediate braking and forward movement, while allowing quick assembly and disassembly without modifying the wheel system components.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

Wheelchair wheel system Wheel system (14,16) comprising a wheel (34) having a hub (36) having a main axis (X), the hub comprising an inner face (37) provided with an internal conical surface (38); a tubular element (22); a main shaft (20) engaged in said tubular element; a handrail (24) comprising an extension portion having a threaded part (30); a brake pad (56) having a braking surface (59) and a first conical surface (57); a coupling member (40) movable in axial translation between a first position in which it rotationally links the handrail and the hub, and a second position for braking the hub; a free wheel (44) disposed between the tubular element and the hub; and a locking piece (74) for locking the tubular element in rotation relative to the frame Figure for the abbreviation: Fig. 1.
Need to check novelty before this filing date? Find Prior Art