Reciprocating refrigeration compressor wrist pin retention
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United States of America Patent
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Feb 5, 2019
Grant Date -
Aug 6, 2015
app pub date -
Jun 27, 2013
filing date -
Sep 4, 2012
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A compressor (20) has a case (22) and a crankshaft (38). The case has a number of cylinders (30 32). For each of the cylinders, the compressor includes a piston (34) mounted for reciprocal movement at least partially within the cylinder. A connecting rod (36) couples each piston to the crankshaft. A pin (44) couples each connecting rod to the associated piston. Each pin has first (52) and second (53) end portions mounted to first (56) and second (57) receiving portions of the associated piston and a central portion (48) engaging the associated connecting rod. For each of the pistons a pair of first and second at least partially non metallic plugs have respective stems received in the pin first and second end portions and respective heads facing a wall surface of the associated cylinder.
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