Internal-combustion engines – Poppet valve operating mechanism – Hydraulic system
Reexamination Certificate
2009-10-13
2011-11-08
Chang, Ching (Department: 3748)
Internal-combustion engines
Poppet valve operating mechanism
Hydraulic system
C123S090130, C123S090330, C123S090370, C123S090390, C184S011200, C418S055600
Reexamination Certificate
active
08051813
ABSTRACT:
A scroll compressor for compressible fluids includes a fixed housing having a spiral-shaped feed chamber which contains a working fluid. A displacement member interacts with the feed chamber and includes a driveshaft which is supported in the housing and has an eccentric disk, a carrier disk which is mounted on the driveshaft, and spiral blades which extend out from both sides of the carrier disk. The displacement member is supported by a bearing on the eccentric disk. A lubricant supply system feeds lubricant to the bearing via the driveshaft and the eccentric disk, with a seal assembly sealing a lubricant chamber against the feed chamber. A pressure regulating valve substantially maintains during operation a differential between a pressure in the feed chamber acting on one side of the seal assembly and a pressure in the lubricant chamber acting on another side of the seal assembly, with the pressure regulating valve being acted upon by the pressure in the feed chamber and by the pressure in the lubricant chamber.
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Chang Ching
Day Ursula B.
Feiereisen Henry M.
Spinnler Engineering
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