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:
Apr. 11, 1995
Filed:
May. 18, 1993
Peter Michel, Kleinrinderfeld, DE;
Siemens Aktiengesellschaft, Munchen, DE;
Abstract
A compact and quiet-operating motor vehicle window drive has the following features: a first drive element or worm gear drives an entraining element with tangential play; a toothed rim is provided in a gear drive housing, axially concentric with the entraining element; a detent pawl that can engage the toothed rim in a self-locking pivot position is mounted in the manner of a toggle lever in the entraining element; a friction ring, with a first disengagement cam in front of and a second detent pawl cam behind the detent pawl, is mounted frictionally and rotatably in the gear drive housing in such a way that when motor drive occurs in 'raise' mode, the friction ring is moved by the entraining element by means of the detent pawl which contacts the first disengagement cam and when motor drive occurs in 'lower' mode, the friction ring is moved directly by the first drive element (worm gear); and when the entraining element is driven from the output side in the 'lowering' rotation direction, the detent pawl can be engaged in a self-locking manner in the toothed rim by means of the second detent pawl cam.