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:
Jun. 30, 2026
Filed:
Jan. 10, 2023
Hydac Fluidtechnik Gmbh, Sulzbach, DE;
Peter Bruck, Althornbach, DE;
Christian Groh, Gersheim, DE;
Frank Schulz, Blieskastel-Bierbach, DE;
Andre Jäger, Sangerhausen, DE;
Lennard Günther, Dresden, DE;
Jan Frederik Lübbert, Dresden, DE;
HYDAC FLUIDTECHNIK GMBH, Sulzbach/Saar, DE;
Abstract
The disclosure relates to a valve, comprising a main plunger for controlling a main volume flow and comprising a pilot-control plunger for controlling a pilot-control volume flow. The main and pilot-control plungers are longitudinally moveably guided in a valve housing and the pilot-control plunger can be actuated by a magnetic device. The position of the main plunger can be adjusted by the pilot-control plunger in that a fluid pressure at the main plunger is communicated, via a fluid connection, into the pilot control chamber containing the pilot-control piston, which keeps the main plunger in its closed position blocking the main volume flow when the magnetic device is not actuated. When the magnetic device is actuated, the pilot-control plunger moves into a position in which the fluid pressure falls in the pilot-control chamber until the main plunger moves into an open position controlling the main volume flow.