Hydraulic coupling member with pressure-relieving poppet valve
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United States of America Patent
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Apr 8, 2014
Grant Date -
Jan 31, 2013
app pub date -
Aug 24, 2011
filing date -
Jul 25, 2011
priority date (Note) -
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Abstract
A poppet valve for a hydraulic coupling member has an internal, spring-loaded check valve (which may be a ball check valve) in fluid communication with a bleed passage. The check valve may be configured as a pressure-relief valve which bleeds off excess hydraulic fluid pressure within the coupling member to a preselected value. A poppet valve according to the invention may be used in female coupling members and/or male coupling members. Certain embodiments of the invention may be retrofitted to coupling members of the prior art.
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