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US 6,644,936 B1Granted
Swash plate type refrigerant compressor
AssigneeZexel Valeo Climate Control Corporation
InventorShunji Muta
Life of this patent
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Abstract
The outer diameter Φd1 of a top face-side end portion 35 of pistons 7 is made slightly smaller than the outer diameter Φd0 of a hollow cylindrical portion 36 of the pistons 7 other than the top face-side end portion 35. Thus, the tilt load of a top face-side portion of the piston 7 is divided and distributed, and at the same time, lubricating oil is held at the top face-side end portion 35 of the piston 7.
Claims12
A swash plate refrigerant compressor comprising:
- a cylinder block having a plurality of cylinder bores formed therein;
- a drive shaft rotatably supported in a central portion of said cylinder block;
- pistons slidably inserted in said cylinder bores, respectively, said pistons each having a top face-side end portion, and a hollow cylindrical portion other than the top face-side end portion, the top face-side end portion having an outer diameter slightly smaller than an outer diameter of the hollow cylindrical portion;
- a swash plate for transmitting a driving force to said pistons;
- and
- a crankcase in which said swash plate is received.
3 more elements
Dependencies are inferred from the claim text.