Dual pre-load cylindrical seal
US9752679B2 · kind B2 · utility
1Cited by
19References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2015 |
| Grant date | Sep 5, 2017 |
| Priority date | — |
| Expiry date | Jul 22, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/3208
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A cylindrical seal apparatus according to one embodiment includes a split spring ring and a split seal ring supported in a groove for example defined in a piston. The split spring ring in a tensioning condition presses against a tapered annular inner surface of the split seal ring to create a radial pre-load and an axial pre-load to the slit seal ring to establish a primary sealing contact between the seal ring and a cylinder, and a second sealing condition between the seal ring and a lower-pressure side of the groove, before the working fluid pressure is built up.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.