Piston assembly for stirling engine
US5865091A · kind A · utility
19Cited by
8References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 14, 1997 |
| Grant date | Feb 2, 1999 |
| Priority date | — |
| Expiry date | Jul 14, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05C2203/0882
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A piston assembly for a double-acting engine such as a double-acting Stirling engine. A pair of sealing rings located on opposite sides of a sealing washer are positioned between a base section and a dome section of a piston head. These sealing rings are alternatively urged into sealing engagement with the cylinder bore as the piston reciprocates. A single sealing ring design is also disclosed in which the sealing ring is urged into constant sealing engagement by positive pressure accumulated with an interior cavity in the piston head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.