Snap-action valve for exhaust system
US8215103B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 16, 2008 |
| Grant date | Jul 10, 2012 |
| Priority date | — |
| Expiry date | Oct 18, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N2240/36
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A passive, exhaust pressure actuated valve assembly for placement inside a tubular exhaust conduit is pivotally mounted to an off-center axle for rotation between fully closed and fully opened positions. A bias element forces the valve flap toward the fully closed position. The valve flap is shaped in a manner enabling use of the interior surface of the exhaust conduit to define stops at the full closed and full opened positions. The valve flap shape, in conjunction with the bias element arrangement, enables the flap to lie substantially parallel to a longitudinal axis of the conduit in the fully opened position, which provides for minimum back pressure in the conduit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.