Piston type compressor
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United States of America Patent
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Oct 18, 2016
Grant Date -
May 8, 2014
app pub date -
Oct 21, 2013
filing date -
Nov 2, 2012
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A piston-type compressor includes a housing, a drive shaft supported on the housing, a communication hole formed inside the drive shaft, a valve mechanism, and a cylindrical body. The cylindrical body is inserted in the communication hole to disconnect a residual gas bypass passage and the communication hole from each other and to open the interior space of the cylindrical body to the communication hole. The valve mechanism includes an annular space defined outside the cylindrical body in the communication hole and multiple connection holes providing communication between the annular space and communication passages. The residual gas bypass passage is formed of the annular space and the multiple connection holes.
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