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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.:

US 11555555 B1

PDFFull Text
Date of Patent:
Jan. 17, 2023

Filed:

Dec. 11, 2020

Safety valve

Applicant:

Hoerbiger Flow Control Gmbh, Altenstadt, DE;

Inventors:

Jochen Schaible, Altensteig, DE;

Daniel Haller, Stuttgart, DE;

Sebastian Neiss, Stuttgart, DE;

Assignee:

HOERBIGER FLOW CONTROL GMBH, Altenstadt, DE;

Attorney:

Myers Wolin, LLC

Primary Examiner:

Matthew W Jellett

Int. Cl.
CPC ...
F16K 37/00 (2006.01); F16K 31/00 (2006.01); F15B 13/043 (2006.01); F15B 19/00 (2006.01); F16K 31/124 (2006.01); H01L 41/04 (2006.01); H01L 41/09 (2006.01);
U.S. Cl.
CPC ...
F16K 31/006 (2013.01); F15B 13/043 (2013.01); F15B 19/00 (2013.01); F16K 31/124 (2013.01); F16K 37/0083 (2013.01); H01L 41/042 (2013.01); H01L 41/096 (2013.01); F15B 2211/855 (2013.01);
Abstract

A safety valve is provided with an electronic control unit for generating a control voltage. An electro-fluidic preliminary stage has a piezo bending actuator which can be actuated between a working position and a safety position by the control voltage and influences the flow of a secondary control fluid flow depending on its position. A fluid-mechanical main stage has an influencing device for influencing the flow of a primary working fluid flow. The influencing device can be actuated by means of the secondary control fluid flow which flows into a control chamber of the main stage. The control unit caries out a test of the preliminary stage repeatedly in an iterative manner after the expiration of a specified time interval. As part of the functionality test, the position of the piezo bending actuator is changed slightly by varying the control voltage.

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