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:
Jan. 19, 2010
Filed:
Jul. 20, 2007
Applicants:
Sylva Rother, Kressbronn, DE;
Michael Obergasser, Friedrichshafen, DE;
Inventors:
Sylva Rother, Kressbronn, DE;
Michael Obergasser, Friedrichshafen, DE;
Assignee:
ZF Friedrichshafen AG, Friedrichshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F15B 15/17 (2006.01);
U.S. Cl.
CPC ...
Abstract
A differential piston (), designed as an annular piston, having pressure chambers () with at least one of the pressure chambers () being pressurized from radially inside the differential piston (), via a hollow shaft () or another radially inner element (), such as, part of a (cylinder) housing element () and a radial pressure medium-guiding channel () arranged directly within the differential piston (), such that only a single additional sealing element () is required.