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. 17, 2003
Filed:
Jan. 10, 2002
Applicant:
Inventors:
Stefan Prebeck, Passau, DE;
Michael Walser, Friedrichshafen, DE;
Assignee:
ZF Friedrichshafen AG, Friedrichshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H 4/702 ;
U.S. Cl.
CPC ...
F16H 4/702 ;
Abstract
A power-splitting transmission which consists of a hydraulic power branch ( ) and a mechanical power branch. Leakage in the hydraulic power branch ( ) as well as the activation apparatuses ( ) in the mechanical power branch are supplied with a pressurized medium from a common pressure source ( ). The common pressure source ( ) transports pressure medium to the hydraulic power branch ( ), through a damping apparatus ( ), and simultaneously transports pressure medium to the activation apparatuses ( ) of the shifting elements ( ) of the mechanical power branch via a controller ( ).