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. 17, 2001
Filed:
Jul. 13, 1999
Siegfried Reichmann, Wermelskirchen, DE;
Erwin Wolf, Weissach im Tal, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The invention relates to a drive device for a motor vehicle door lock or the like, which comprises a motor or in particular an electromotor drive and a gear unit (,) with a drive end and an output end. In order to optimize mechanical back-up actuation in the case of power failure or voltage drop or other interruption of the motor, in particular electromotor drive, according to the invention, between the drive end and the output end of the gear unit (,), is fitted a coupling (,) that is variable in coupling degree, which has a high degree of coupling in the case of high rotational speed, and a low degree of coupling in the case of low rotational speed.