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. 16, 1993
Filed:
Nov. 07, 1991
Applicant:
Inventors:
Emik A Avakian, Chicopee, MA (US);
James V Masi, Wilbraham, MA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B62D / ;
U.S. Cl.
CPC ...
180-65 ; 180 656 ; 180385 ; 180907 ; 301-65 ;
Abstract
Apparatus which enables a foldable wheelchair to be retrofitted with an electrical propulsion system without significantly compromising the ability to fold the chair. The apparatus includes a drive unit for each wheel to be driven. The drive units can be mounted on the stationary axles of the driven wheels and apply torque, generated by a separate motor in each drive unit, to the wheels at a plurality of symmetrically located points which are radially displaced from the axles.