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. 12, 2007
Filed:
Sep. 21, 2004
Thies Hameister, Friedrichshafen, DE;
Walter Kill, Friedrichshafen, DE;
Karlheinz Mayr, Bregenz, DE;
Wolfgang Schmid, Langenargen, DE;
Thies Hameister, Friedrichshafen, DE;
Walter Kill, Friedrichshafen, DE;
Karlheinz Mayr, Bregenz, DE;
Wolfgang Schmid, Langenargen, DE;
ZF Friedrichshafen AG, Friedrichshafen, DE;
Abstract
The invention concerns a pressure control valve for the control of the value of pressure in a hydraulic circuit, especially in a hydraulic circuit of a vehicle transmission, with a valve housing, with a solenoid coil, with an armature component group comprising an armature rod, an armature and advantageously, a spring, with a yoke and with a push rod, which is interposed between the armature rod and a control element, whereby the section of the valve housing () in the zone of the control element () consists of a plastic flange (), and further, the armature rod () possesses a control boring in the longitudinal direction, in which a pin (″) is inserted, the material and dimensioning are so selected, that the pin can compensate for a temperature based longitudinal change of the plastic flange ().