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:
Mar. 13, 2018
Filed:
Mar. 05, 2013
Applicant:
Hydac Fluidtechnik Gmbh, Sulzbach/Saar, DE;
Inventors:
Assignee:
HYDAC FLUIDTECHNIK GMBH, Sulzbach/Saar, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F15B 13/043 (2006.01); F15B 13/04 (2006.01); G05D 16/20 (2006.01); F16K 17/10 (2006.01); F16K 31/42 (2006.01); F16K 31/06 (2006.01); F16K 27/04 (2006.01); F16H 61/02 (2006.01);
U.S. Cl.
CPC ...
F15B 13/0401 (2013.01); F15B 13/0433 (2013.01); F15B 13/0435 (2013.01); F16K 17/10 (2013.01); F16K 27/048 (2013.01); F16K 31/0613 (2013.01); F16K 31/426 (2013.01); G05D 16/2093 (2013.01); F16H 2061/0258 (2013.01); Y10T 137/86582 (2015.04); Y10T 137/86614 (2015.04);
Abstract
A valve, in particular a pilot-operated proportional pressure control valve, has a valve housing () with a pressure supply port (), a working port (), and a drain port (). In the valve housing (), a main valve piston () can be moved by a pilot stage () for control of the fluid flow between the pressure supply port () and the working port (). The pilot stage () has a valve closing element () for a pilot chamber (). The valve closing element () is movable from an open position (OS) into a closed position (SS) by an actuating apparatus (). The valve closing element () can actuate a leakage reduction stage ().