Single-headed piston for swash plate type compressor wherein head portion has a curved surface at axial end
US6575080B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 22, 2000 |
| Grant date | Jun 10, 2003 |
| Priority date | — |
| Expiry date | Nov 20, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B27/0878
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A single-headed piston for a swash plate type compressor including a head portion having an outer circumferential surface for sliding contact with an inner circumferential surface of a cylinder bore formed in a cylinder block of the compressor, and an engaging portion engaging a swash plate of the compressor, characterized in that; the outer circumferential surface of the head portion includes a cylindrical surface and a curved surface which is formed adjacent to at least one of opposite axial ends of the cylindrical surface, so as to smoothly extend from at least one circumferential part of the cylindrical surface, the curved surface being formed such that a radial distance between a centerline of the cylindrical surface and the curved surface gradually decreases in an axial direction of the cylindrical surface from the corresponding axial end of the cylindrical surface toward the corresponding axial end of the piston, and such that a radius of curvature of a cross sectional shape of the curved surface taken in a plane which includes the centerline of the cylindrical surface is larger than a diameter of the inner circumferential surface of the cylinder bore.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.