Flow control valve for exhaust gas purifying system
US3999737A · kind A · utility
5Cited by
4References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 18, 1974 |
| Grant date | Dec 28, 1976 |
| Priority date | — |
| Expiry date | Jun 18, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7749
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A flow control valve for an exhaust gas purifying system which is divided into a first valve chamber into which the exhaust gases flow and a second valve chamber out of which the exhaust gases flow. A first valve means responsive to the exhaust gases controls the communication between the first and second valve chambers and a second valve means controls the operation of the first valve means in response to the negative pressure in an air intake system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.