Invention Grant
- Patent Title: Hydraulic valve with pressure limiter
- Patent Title (中): 带压力限制器的液压阀
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Application No.: US13635644Application Date: 2010-11-22
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Publication No.: US09027589B2Publication Date: 2015-05-12
- Inventor: Gregory Coolidge
- Applicant: Gregory Coolidge
- 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
- International Application: PCT/US2010/057555 WO 20101122
- International Announcement: WO2011/115647 WO 20110922
- Main IPC: F16K31/12
- IPC: F16K31/12 ; G05D16/10 ; F15B13/02 ; F15B13/04

Abstract:
An assembly of valve sections includes an inlet section, an outlet section, a working section, and a working section. The working section is a conventional pressure compensated working section. The working section includes a directional control valve, a pressure compensator valve, and a pressure limiter valve. The valves are of integral construction, such that each is an essential part to complete the other. The pressure compensator valve includes a pressure compensator spool movable between an opened position and a closed position in response to a pressure differential across the spool. The pressure limiter valve includes a pressure limiter spool that moves to an open position to change the pressure differential and close the pressure compensator valve when a selected limit pressure is reached.
Public/Granted literature
- US20130061955A1 HYDRAULIC VALVE WITH PRESSURE LIMITER Public/Granted day:2013-03-14
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