Hydraulic system with a dynamic seal
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United States of America Patent
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May 16, 2017
Grant Date -
Feb 6, 2014
app pub date -
Jul 22, 2013
filing date -
Jul 31, 2012
priority date (Note) -
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Abstract
A system can include one or more valve arrangements with a working chamber to receive a working fluid at a first pressure, and a control chamber to receive fluid at a second pressure. A dynamic seal can be disposed on a land of a valve element. The valve arrangement may include a sleeve against which the dynamic seal is slidably engaged. The valve element may include a check stem. A pressure compensating system may be in communication with bores formed in with the valve element. A pressure system to monitor dynamic seal wear may be in communication with the control chamber of the valve arrangement.
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