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:
Mar. 19, 2002
Filed:
Dec. 16, 1999
Applicant:
Inventors:
Oswald Friedmann, Lichtenau, DE;
Urban Panther, Seelbach, DE;
Assignee:
LuK Getriebe-Systeme GmbH, Buhl/Baden, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60K 4/112 ;
U.S. Cl.
CPC ...
B60K 4/112 ;
Abstract
A motor vehicle has a continuously variable transmission and a hydraulic device to perform the functions of changing as well as maintaining the ratio of the continuously variable transmission. The hydraulic device comprises a valve arrangement with at least one connector terminal for controlling a transmission ratio change and at least one connector terminal for maintaining the transmission ratio at a set level.