Apparatus for limiting back pressure in an exhaust-type engine suppressor
US4682674A · kind A · utility
18Cited by
3References
3Claims
0Family size
Inventor
Key dates
| Filing date | Aug 7, 1985 |
| Grant date | Jul 28, 1987 |
| Priority date | — |
| Expiry date | Aug 7, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87531
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A pressure relief device for a throttle-type engine exhaust suppressor comprises a valve bore opening into the exhaust pipe in the region of an end face of the throttle valve when the throttle valve is in closed position. The valve bore incorporates a spring loaded valve poppet. When a predetermined back pressure is established in the exhaust pipe, the valve poppet opens against the spring pressure and provides a bypass around the throttle valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.