The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 03, 2012
Filed:
Feb. 13, 2012
Daniel Z. Zhou, Fresno, CA (US);
Mark A. Jackson, Fresno, CA (US);
John J. Tarter, Fresno, CA (US);
Mark E. Greig, Longmont, CO (US);
Rex W. Stevens, Longmont, CO (US);
James M. Koerlin, Broomfield, CO (US);
Samuel D. Traxinger, Fresno, CA (US);
Allen B. Killebrew, Longmont, CO (US);
Daniel Z. Zhou, Fresno, CA (US);
Mark A. Jackson, Fresno, CA (US);
John J. Tarter, Fresno, CA (US);
Mark E. Greig, Longmont, CO (US);
Rex W. Stevens, Longmont, CO (US);
James M. Koerlin, Broomfield, CO (US);
Samuel D. Traxinger, Fresno, CA (US);
Allen B. Killebrew, Longmont, CO (US);
Sunrise Medical HHG, Inc., Longmont, CO (US);
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.