Invention Grant
- Patent Title: Non chattering pressure relief valve
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Application No.: US14979022Application Date: 2015-12-22
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Publication No.: US09709182B2Publication Date: 2017-07-18
- Inventor: Geoffrey R. Zhang , Rodney K. Craven
- Applicant: Parker-Hannifin Corporation
- Applicant Address: US OH Cleveland
- Assignee: Parker-Hannifin Corporation
- Current Assignee: Parker-Hannifin Corporation
- Current Assignee Address: US OH Cleveland
- Agency: Renner, Otto, Boisselle & Sklar, LLP
- Main IPC: F16K15/02
- IPC: F16K15/02

Abstract:
A pressure relief valve includes a valve body having an inlet and an outlet and defining a first fluid path fluidly connecting the inlet and the outlet of the valve; a valve member axially moveable between a first position and a second position, the valve member configured to close the fluid path in the first position and thereby restrict flow between the inlet and the outlet, the valve member configured to open the fluid path in the second position and thereby allow flow between the inlet and the outlet; a biasing element configured to bias the valve member in the first position; and a friction element resiliently biased laterally against an axially extending surface of the valve member to provide frictional resistance to movement of the valve member and thereby cause hysteresis in axial movement of the valve member between the first position and the second position.
Public/Granted literature
- US20160153572A1 NON CHATTERING PRESSURE RELIEF VALVE Public/Granted day:2016-06-02
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