Rotary valve seal
US7134416B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 19, 2003 |
| Grant date | Nov 14, 2006 |
| Priority date | — |
| Expiry date | May 19, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B75/34
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a valve seal mechanism for a rotatable valve assembly that provides a sealing function between a rotating first valve element and a fixed second valve element as used in a rotary cylinder valve engine. In one embodiment the seal mechansim comprises a substantially rigid sealing frame which surrounds and sealingly engages the periphery of the valve port of one of the cyclindrical valve elements and also sealingly engages a surface of the other cylindrical valve element. In another embodiment, the seal mechanism comprises a resiliently deflectable tubular element of variable diameter, the tubular element being mounted around a first valve element with an aperture of the tubular element being radially aligned with a valve port of the first valve element, the tubular element being biased radially outward of the first valve element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.