Pump safety device
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United States of America Patent
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-
Jul 26, 1983
Grant Date -
N/A
app pub date -
Sep 24, 1981
filing date -
Jan 24, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The safety device insures the longitudinal tightness of a pump shaft in the case where the pump dynamic gasket separating the high pressure chamber from the low pressure chamber of the pump brakes. According to the invention, the device comprises a cylindrical hollow piston coaxially surrounding the pump shaft and the structure allowing the axial displacement of the piston in order to compress a toroidal safety gasket between the shaft and the piston in the event of a failure of the dynamic gasket.
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