Invention Grant
- Patent Title: Pressure compensator valve
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Application No.: US16643892Application Date: 2018-09-05
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Publication No.: US11268544B2Publication Date: 2022-03-08
- Inventor: Peter Bruck , Frank Schulz
- Applicant: HYDAC FLUIDTECHNIK GMBH
- Applicant Address: DE Sulzbach/Saar
- Assignee: HYDAC FLUIDTECHNIK GMBH
- Current Assignee: HYDAC FLUIDTECHNIK GMBH
- Current Assignee Address: DE Sulzbach/Saar
- Agency: Wenderoth, Lind & Ponack, L.L.P.
- Priority: DE102017008359.2 20170906
- International Application: PCT/EP2018/073823 WO 20180905
- International Announcement: WO2019/048455 WO 20190314
- Main IPC: F15B13/04
- IPC: F15B13/04 ; B66F9/22 ; F15B11/05 ; F15B13/00

Abstract:
A valve, in particular for use as a pressure compensator or maintenance-type component (38) in hydraulically actuated hoisting devices (2), has a valve housing (54) with a control port (40), a fluid inlet (64) and a fluid outlet (66). A regulating piston (68) is longitudinally displaceably in the valve housing (54) and acts against an energy storage device (70) in the form of a compression spring, bringing the regulating piston (68) into positions forming a fluid-conveying connection between the fluid inlet (40) and the fluid outlet (66) or blocking this connection by a control pressure existing at the control port (40). A first orifice (88) in the regulating piston (68) connects the control port (40) to a receiving space (62) for the energy storage device (70) in a fluid-conveying manner. A second orifice (90) is in an intermediate part (72) in the valve housing (54). The receiving space (62) can be connected to a compensating chamber (92), which connected to the fluid outlet (66) in a fluid-conveying manner (98).
Public/Granted literature
- US20200347855A1 VALVE Public/Granted day:2020-11-05
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