Uniform load piston ring
US4289264A · kind A · utility
23Cited by
11References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 23, 1979 |
| Grant date | Sep 15, 1981 |
| Priority date | — |
| Expiry date | Mar 23, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S277/926
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A piston ring which provides uniform circumferential pressure loading on the ring. The ring has two protrusions, and an optional third protrusion, which give full and uniform sealing contact between the ring, and a complementary peripheral groove in an associated piston, or housing, and a complementary cylinder movable wall, or sleeve, so that minimum pressure balance is sacrificed irrespective of any movement of the cylinder wall.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.