Piston vibrator
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United States of America Patent
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-
Jul 19, 2016
Grant Date -
Oct 17, 2013
app pub date -
Oct 3, 2011
filing date -
Oct 1, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
A vibrator has a hollow body with two end walls, a first piston slidably housed within the body, a first chamber defined therein and communicating with an inlet and bounded by a first active surface of the first piston, and a second chamber bounded by a second active surface of the piston, larger than and opposite the first active surface. The first piston slidingly houses a switch unit having at least one second piston and controlled by a fluid switch circuit having an inlet portion formed in the first piston and communicating with the first chamber. An outlet portion is formed in the first piston and communicates with the outlet. A switch portion, which is defined by the switch unit, communicates with the second chamber, and connects the second chamber to the inlet portion and to the outlet portion alternately as a function of the switch unit's axial position.
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