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:
Jul. 22, 2003
Filed:
Nov. 15, 2001
Applicant:
Inventors:
Gert Bauknecht, Immenstaad, DE;
Manfred Bucksch, Friedrichshafen, DE;
Assignee:
ZF Friedrichshafen AG, Friedrichshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H 6/330 ;
U.S. Cl.
CPC ...
F16H 6/330 ;
Abstract
The multi-step automatic transmission with a number of clutches and brakes which at least partly are designed as wet-running, multi-disk clutches wherein with each clutch is associated a hydraulic piston ( ), is provided with a baffle plate ( ) for the fluid within or outside the clutch for adapting the shifting forces to low torques so that an additional pressure chamber ( ) is formed which does not impair the total stroke of the piston ( ).