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:
Mar. 10, 1992
Filed:
Nov. 29, 1990
Applicant:
Inventors:
Joseph B Richey, Shaker Heights, OH (US);
Theodore D Wakefield, Vermilion, OH (US);
Alan D Wainscott, Avon Lake, OH (US);
Assignee:
Invacare Corporation, Elyria, OH (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60K / ;
U.S. Cl.
CPC ...
180 656 ; 180-65 ; 180907 ; 297D / ;
Abstract
A powered wheelchair includes a high efficiency drive mechanism for increasing the range of travel on a predetermined battery charge. Drive motors are transversely mounted relative to side frames of the wheelchair, and disposed in superimposed arrangement for varying the width of the wheelchair.