US 2003/0164088 A1 · Compressors and pistons for use in such compressors

Abstract

A piston for use in a compressor comprises a head portion and an engaging portion. The engaging portion includes a first shoe pocket and a second shoe pocket formed therein, and an interior surface of the first shoe pocket includes a hollow potion formed therein. Moreover, the interior surface of the first shoe pocket includes a lubrication layer formed thereon. For example, the lubricant layer may include a solid lubricant or a grease having a viscosity which is sufficient to adhere the grease to the interior surface of the first shoe pocket or the second shoe pocket, or both. In an embodiment, an interior surface of the second shoe pocket also may have the hollow portion formed therein. In another embodiment, the interior surface of the second shoe pocket may have a penetrating aperture formed therein.

Claims21

Dependent claims

A compressor for use in an automotive air conditioning system comprising:

a front housing
a cylinder block comprising at least one cylinder bore formed therethrough;
a drive shaft rotatably supported by the cylinder block and the front housing;
a swash plate rotatably mounted on the drive shaft;
at least one piston positioned within the at least one cylinder bore, wherein the at least one piston comprises:
a head portion;
and
an engaging portion comprising a first shoe pocket and a second shoe pocket formed therein,, wherein an interior surface of the first shoe pocket comprises:
a hollow portion formed therein;
and
a lubrication layer formed thereon;
at least one first shoe positioned between the swash plate and the first shoe pocket;
and
at least one second shoe positioned between the swash plate and the second shoe pocket.

11 more elements

Dependencies are inferred from the claim text.

Compressors and pistons for use in such compressors

Life of this patent

Compressors and pistons for use in such compressors

Life of this patent

Abstract

Claims21