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:
Dec. 07, 2004
Filed:
Dec. 18, 2002
Applicant:
Inventor:
Ulrich Alber, Albstadt, DE;
Assignee:
Alber Antriebstechnik GmbH, Albstadt, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60K 1/00 ;
U.S. Cl.
CPC ...
B60K 1/00 ;
Abstract
An operating- and braking-assistance device for wheelchairs is attachable on the frame of a wheelchair. The device has at least one motorized pinion ( ), which is driveable in both directions and which engages on an inner gear ( ) that is attachable to the rim ( ) of a wheel ( ) of the wheelchair.