Hydraulic cylinder for generating vibrations
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United States of America Patent
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-
Mar 2, 1982
Issued Date -
N/A
app pub date -
Jul 23, 1980
filing date -
May 18, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A hydraulic cylinder for generating vibrations which comprises: a cylinder body; a hollow piston rotatably mounted in said cylinder body; and a valve rotor rotatably engaged within said hollow piston, said valve rotor having a change-over valve portion adapted to be rotated for applying hydraulic loads to said piston alternately in axially opposite directions.
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