F - Mech Eng,Light,Heat,Weapons – 01 – C
Patent
F - Mech Eng,Light,Heat,Weapons
01
C
184/35, 230/89
F01C 1/04 (2006.01) F04C 29/02 (2006.01)
Patent
CA 2016823
ABSTRACT A hermetic scroll compressor is disclosed including within a hermetically sealed housing a fixed scroll member, an orbiting scroll member, and rotatable crankshaft operably coupled to the orbiting scroll member by an eccentric crank mechanism. The crank mechanism includes an eccentric crankpin on the end of the crankshaft, a cylindrical roller having an off-center bore in which the crankpin is received, and a cylindrical well formed on the bottom of the orbiting scroll member into which the roller and crankpin assembly are received. An axial oil passageway in the crankshaft delivers oil from an oil sump directly to the interfaces between bearing surfaces of the crankpin, roller, and orbiting scroll member by means of radial oil passages in both the crankpin and roller. The radial passages are located at a central location along the axial length of the interfaces, and are either in line at the interface between the crankpin and roller, or are staggered 180 degrees.
Mccarthy Tetrault Llp
Richardson Hubert Jr.
Tecumseh Products Company
LandOfFree
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