Midwheel drive wheelchair with independent front and rear suspension

US8210556B2 · kind B2 · utility

Assignee

• Sunrise Medical HHG, Inc. · US

Inventors

• Daniel Z. Zhou · Clovis, US
• Mark A. Jackson · Fresno, US
• John J. Tarter · Fresno, US
• Mark E. Greig · Fresno, US
• Rex W. Stevens · Longmont, US
• James M. Koerlin · Broomfield, US
• Samuel D. Traxinger · Fresno, US
• Allen Killebrew · Longmont, US

Key dates

• Filing date: Feb 13, 2012
• Grant date: Jul 3, 2012
• Expiry date: Feb 13, 2032

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60G2300/402
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A wheelchair includes a frame, and a front pivot arm pivotally mounted to the frame at a front pivot point, the front pivot arm having a caster for supporting the frame. A rear pivot arm is pivotally mounted to the frame at a rear pivot point, the rear pivot arm having a caster for supporting the frame. A ground engaging mid-wheel drive wheel is connected to the frame. A linkage connects the front and rear pivot arms to each other in a manner such that an upward or downward rotation of one of the pivot arms about its pivot point causes rotation of the other pivot arm about its pivot point in an opposite rotational direction.