Reciprocating engine piston seal
US4776261A · kind A · utility
Inventor
Key dates
| Filing date | May 8, 1987 |
| Grant date | Oct 11, 1988 |
| Priority date | — |
| Expiry date | May 8, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S92/02
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Apparatus for sealing the gap between a piston and engine cyinder wall of either a reciprocating engine or a reciprocating compressor. The apparatus includes a plurality of functionally-identical, gas-bearing-supported seal blocks that locate in a slot running circumferentially around the engine piston. Gases fed from the engine chamber to the gas bearing carrying the load on the seal block in the direction of piston travel. The seal block includes a gas accumulator cavity for gas storage. An orifice feeds gas from the gas accumulator cavity to the gas bearing interfacing between the seal block and the engine cylinder wall. The apparatus also includes a reaction piston having gas communicated thereto from the engine chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.