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:
Dec. 06, 2016
Filed:
Oct. 15, 2010
Adrian Jerchen, Wuerzburg, DE;
Thorsten Geiger, Backnang, DE;
Ludmilla Graf, Lohr, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A pilot-controlled pressure control valve is disclosed. The pilot-controlled pressure control valve has a pilot control stage, a spool valve, and an overload spring. The pilot control stage includes a pilot control piston which has a pilot control spring. The pilot control spring acts in a closing direction of the pilot control stage. The pilot control spring is supported on the spool valve which can be positioned by a control pressure against the force of the overload spring. The control pressure is configured to set a preload of the pilot control spring. At the same time, in a loaded position, in which the pilot control valve has minimum preload, the spool valve rests against a stop. A preload of the overload spring and a position of the stop can be set independently of one another.