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:
Nov. 19, 2002
Filed:
Mar. 20, 2001
Applicant:
Inventors:
Martin Vohmann, Esslingen, DE;
Ralf Dreibholz, Meckenbeuren, DE;
Assignee:
ZF Friedrichshafen AG, Friedrichshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60K 4/122 ; F16D 4/806 ;
U.S. Cl.
CPC ...
B60K 4/122 ; F16D 4/806 ;
Abstract
The invention relates to a method and device for a coupling ( ) in a motor vehicle transmission, the coupling being controlled and regulated during two operational states by way of a first regulating circuit ( ). The regulated quantity corresponds to the actual value of a differential engine speed of the coupling ( ). The first state corresponds to a starting action and the second state to operation with a variable transmission ratio.