Rotary compressor
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United States of America Patent
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Mar 15, 2016
Grant Date -
Aug 27, 2015
app pub date -
Aug 19, 2013
filing date -
Aug 20, 2012
priority date (Note) -
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Abstract
A rotary compressor includes a cylinder with a cylinder chamber, a piston, a blade and a pair of bushes. The piston is movable-within the cylinder chamber. The blade is integrally formed with the cylinder or piston and penetrates a groove formed in the other to segment the cylinder chamber into high and low pressure chambers. The bushes are provided at the groove and sandwich the blade from both sides of the blade. At least one of the pair of bushes includes an oil supply passage formed from a blade-side sliding surface to a groove-side sliding surface, a blade-side oil reservoir formed on the blade-side sliding surface, and a groove-side oil reservoir on the groove-side sliding surface. Ends of the oil supply passage open to the blade-side and groove-side oil reservoirs. The groove-side oil reservoir being wider than the blade-side oil reservoir.
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