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. 28, 2015
Filed:
Jul. 20, 2009
Udo Froehlich, Rothenfels, DE;
Ibrahim Doertoluk, Haibach, DE;
Bernd Schnurr, Lohr-Sendelbach, DE;
Richard Tauber, Heigenbruecken, DE;
Udo Froehlich, Rothenfels, DE;
Ibrahim Doertoluk, Haibach, DE;
Bernd Schnurr, Lohr-Sendelbach, DE;
Richard Tauber, Heigenbruecken, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A control device has a control drive for operating a valve or some other apparatus, for example an adjustment device for the pitch angle of a wind rotor, by means of a control element. This control drive is associated with an emergency operating device, via which the control element can be reset in the event of a disturbance, essentially independently of the operation of the control drive. This emergency operating device has an energy store, whose stored energy can be released for resetting. The emergency operating device has a piston, on one side of which the energy store acts and on the other side of which a pressure in a pressure area acts, which pressure area can be connected via a switching valve to a tank or the like, in order to release the energy stored in the energy store. In this case, the piston is designed such that it moves the control element in a resetting direction when the pressure in the pressure is relieved.