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. 04, 2005
Filed:
Sep. 17, 2003
Karlheinz Mayr, Bregenz, AT;
Walter Kill, Friedrichshafen, DE;
Thilo Schmidt, Meckenbeuren, DE;
Gunter Philipp, Eriskirch-Mariabrunn, DE;
Hubert Remmlinger, Friedrichshafen, DE;
Karlheinz Mayr, Bregenz, AT;
Walter Kill, Friedrichshafen, DE;
Thilo Schmidt, Meckenbeuren, DE;
Gunter Philipp, Eriskirch-Mariabrunn, DE;
Hubert Remmlinger, Friedrichshafen, DE;
ZF Friedrichshafen AG, Friedrichshafen, DE;
Abstract
A proportional pressure-regulator valve comprising a load-dependent control step and a method for the load-dependent regulation of a pressure level of a pressure medium with one proportional pressure-regulator valve. The load-dependent control step is obtained with a proportional magnet () having at least two gaps () for regulating the magnetic force. The size of the gaps () can be adjusted independently of each other. While a first gap (!) is current-dependent regulated, the size of the second gap () can be regulated via a pressure force adaptable in proportion to a load requirement in the hydraulic circuit.