Hydraulic distributor for percussion apparatus driven by an incompressible fluid under pressure
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United States of America Patent
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Aug 22, 1989
Grant Date -
N/A
app pub date -
Jul 18, 1988
filing date -
Jul 17, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In the body of the distributor (6) is mounted for sliding a valve (21) delimiting with the bore of the distributor in which it is mounted at least one control chamber (22) in permanent communication by means of at least one channel (31) with the control chamber of the distributor. When a hydraulic signal is received in the control chambers, the valve (21) moves, controlling the subsequent movement of the distributor (6) independently of any hydraulic connection made by the percussion piston.
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