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:
Apr. 19, 2022
Filed:
Dec. 17, 2018
Hydac Fluidtechnik Gmbh, Sulzbach/Saar, DE;
Markus Bill, Eppelborn, DE;
Frank Schulz, Blieskastel-Bierbach, DE;
HYDAC FLUIDTECHNIK GMBH, Sulzbach/Saar, DE;
Abstract
A device includes a regulating piston () guided longitudinally movably in a housing () and interacting with a control edge (), at a pressure supply port (P) that supplies a utility port (A) in regulating positions of the regulating piston () with fluid. The pressure can be preset via a fluid connection, pulling the regulating piston towards a closed position blocking this fluid connection due to occurring flow forces. The regulating piston () has a change of shape () from its general outer basic shape in the area of the control edge () of the housing () for a flow force compensation. A flow contact surface for fluid is provided causing a compensating force acting against the flow force to be introduced into the regulating piston (), which flow force pulls the regulating piston () into an open position opposite from the blocked position. The change of shape () also follows a step function, the function graph of which has at least one step more than the number of steps required to form the control edge ().