Pressure reversing valve for a fluid-actuated, percussive drilling tool
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United States of America Patent
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Jun 27, 2023
Grant Date -
N/A
app pub date -
Feb 17, 2022
filing date -
Feb 17, 2022
priority date (Note) -
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status (Latency Note)
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Abstract
A pressure reversing valve for a fluid-actuated percussive drilling tool has a front thrust surface in communication with a rear chamber and a rear thrust surface in communication with a pressurized volume isolated from the flow coming from the source of pressurized fluid. The pressurized volume is in communication with a front chamber and allows the valve to take advantage of the imbalanced profile of the pressures inside the front and rear chambers that naturally occurs for enabling an asymmetric feeding process of the rear chamber that is also less sensitive to the bottom hole pressure.
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Cited Art Landscape
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