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. 16, 2004
Filed:
Apr. 18, 2002
Applicant:
Inventors:
Ünal Gazyakan, Friedrichshafen, DE;
Detlef Baasch, Friedrichshafen, DE;
Roland Altvater, Friedrichshafen, DE;
Assignee:
ZF Friedrichshafen AG, Friedrichshafen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16D 5/700 ;
U.S. Cl.
CPC ...
F16D 5/700 ;
Abstract
A retarder system for commercial vehicles is provided which consists of a transmission oil circuit ( ) for lubrication of the transmission and of a retarder cooling circuit ( ) which uses oil as operating fluid, both circuits being coupled via a connection ( ) so that in the non-activated braking state of the retarder ( ), for increasing the transmission oil flow rate through a radiator ( ), oil can be branched off from the transmission oil circuit ( ). In addition a retarder pump ( ) is proposed which has a prime mover ( ), preferably an electrical motor.