Hydraulic piston with cooling and lubrication valve
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United States of America Patent
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Apr 28, 2020
Grant Date -
Mar 7, 2019
app pub date -
Aug 29, 2018
filing date -
Sep 5, 2017
priority date (Note) -
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status (Latency Note)
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Abstract
The hydraulic piston forms a hydraulic chamber with a cylinder and has a cylindrical body which receives a seal and whose external cylindrical surface is housed with little clearance in the cylinder in such a manner as to leave an interstitial space, the cylindrical body being run through by a cooling and lubrication pipe which can be opened or closed by a cooling and lubrication valve which is moved by translation by a valve-actuator in such a manner that fluid can pass via a flow calibration opening from the hydraulic chamber to the interstitial space when the pressure existing in the hydraulic chamber is low and cannot pass when the pressure in the chamber is high.
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