Valve system for pneumatic cylinders
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United States of America Patent
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Nov 19, 2019
Grant Date -
Jun 28, 2018
app pub date -
Feb 23, 2018
filing date -
Jun 22, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
A valve system for use with a cylinder having an extensible rod, includes a first valve assembly including a first inlet/outlet port, a check valve biased toward a closed state, the check valve having a check valve body at least partially receivable within a first port of the cylinder, a flow control valve positioned in series between the first inlet/outlet port and the check valve, and a first pilot port selectively communicable with a pressurized gas for opening the check valve. The valve system further includes a second valve assembly including a second inlet/outlet port, a second pilot port through which the pressurized gas must flow before being introduced to the first pilot port, and a valve body at least partially receivable within a second port of the cylinder, wherein the second inlet/outlet port and the second pilot port are integrally formed as a portion of the valve body.
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