Serviceable valve construction
US4492210A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 18, 1983 |
| Grant date | Jan 8, 1985 |
| Priority date | — |
| Expiry date | Feb 18, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S137/907
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A serviceable valve is provided for controlling the recirculation of exhaust gases within an internal combustion engine. The valve includes a housing having a first section provided with an interior chamber and a second section secured to and subtending said first section. A diaphragm is affixed to and interposed the housing sections and is in communication with the chamber. In response to a predetermined chamber pressure, the diaphragm is distorted in one direction from a predetermined rest position. The housing is mounted on a fitting, which subtend the housing second section, whereby said housing and the diaphragm are rotatable as a unit about an axis of the fitting to selected positions of adjustment. The fitting is removably mounted on the engine. Carried on the diaphragm is a stem assembly which is movable longitudinally in response to the distortion of the diaphragm. A portion of the stem assembly extends through and protrudes from the fitting and has a valve piece mounted thereon. The valve piece is adapted to coact with a valve seat disposed within a recirculation flow path of the engine exhaust gases and, when seated thereon, blocks recirculation of the exhaust gases thro…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.