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:
Feb. 14, 2012
Filed:
Dec. 11, 2008
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 personal mobility vehicle includes an base unit having a frame and front and rear pivot arms pivotally mounted at respective front and rear pivot points. The front and rear pivot arms support casters. A drive unit having 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. The base unit may also include a drive unit that is pivotally supported on the base unit by a torque arm and a suspension system that includes a suspension stop. The torque arm selectively disengages the suspension stop to allow movement of the front caster wheel in response to the terrain traversed.