Sealed compressor
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United States of America Patent
Stats
-
Dec 13, 2016
Grant Date -
Nov 15, 2012
app pub date -
Apr 30, 2012
filing date -
May 9, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
A sealed compressor comprises an electric element; a compression element; and a sealed container accommodating the electric element and the compression element; wherein the compression element includes a cylinder block defining a compression chamber; a piston which is reciprocatable inside the compression chamber; and a valve plate disposed to close an opening end of the compression chamber and having a discharge hole which provides communication between inside and outside of the compression chamber; the piston has a first groove on a tip end surface thereof which faces the valve plate, the first groove having a predetermined width and extending from an outer peripheral edge portion of the tip end surface toward a portion of the tip end surface which faces the discharge hole; and a tip end portion of the first groove is positioned in the portion of the tip end surface which faces the discharge hole and is inclined.
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