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:
Jun. 18, 2002
Filed:
Oct. 25, 2000
Applicant:
Inventors:
Frank Kleefeldt, Heiligenhaus, DE;
Fred Welskopf, Herne, DE;
Assignee:
Kiekert AG, Heiligenhaus, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 7/29 ; E05C 3/26 ;
U.S. Cl.
CPC ...
H02P 7/29 ; E05C 3/26 ;
Abstract
A motor-vehicle door latch to avoid unnecessary sound emission, has its motor operated with pulse-width modulation so that, once a blockade time point is reached or prior thereto, the motor is energized with reduced power so that it generates a ramp characteristic running to a minimum. The torque and/or speed are thereby reduced along the ramp characteristic correspondingly.