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:
Sep. 03, 2019
Filed:
Oct. 14, 2015
Applicant:
Hydac Fluidtechnik Gmbh, Sulzbach/Saar, DE;
Inventors:
Frank Schulz, Blieskastel-Bierbach, DE;
Markus Bill, Heusweiler, DE;
Assignee:
HYDAC FLUIDTECHNIK GMBH, Sulzbach/Saar, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K 31/40 (2006.01);
U.S. Cl.
CPC ...
F16K 31/408 (2013.01); F16K 31/406 (2013.01);
Abstract
A pilot-controlled directional control valve, in particular a directional poppet valve, has a valve housing (), at least three fluid connection points (), a main control stage () and a pilot control stage. A further fluid-controlling intermediate stage () is arranged between the main control stage () and the pilot control stage (). The main control stage () has a longitudinally movable main control piston (). The pilot control stage has a longitudinally movable pilot control piston ().