Hydraulic power unit having ceramic oscillator, and hydraulic engine including the hydraulic power unit
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United States of America Patent
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Aug 19, 2014
Grant Date -
May 2, 2013
app pub date -
Oct 31, 2011
filing date -
Oct 31, 2011
priority date (Note) -
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Abstract
This invention discloses a hydraulic power unit, which is capable of strongly jetting a working fluid, may be used to implement a new hydraulic engine. The hydraulic engine generates rotational power by using environmentally friendly electric energy, and has improved performance and a long life span. The hydraulic power unit includes: an inner tube comprising a hollow portion, wherein a fluid inlet and a fluid outlet are formed in the inner tube; a vibration tube comprising a hollow portion, an elastic tube layer and a metal tube layer, and the hollow portion of the vibration tube is connected in line to the hollow portion of the inner tube; an oscillator that is disposed to contact a back end of the vibration tube; an outer check member that is disposed to contact the fluid outlet; and an inner check ring that is disposed to contact the fluid inlet.
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