Vapor regulating valve
US3935850A · kind A · utility
13Cited by
3References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 12, 1974 |
| Grant date | Feb 3, 1976 |
| Priority date | — |
| Expiry date | Jun 12, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/786
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A vapor regulating valve for use in a system for mixing air with fuel vapor from a fuel tank is constructed so that fuel vapor pressure against a diaphragm actuates a valve to allow engine induction vacuum to be exerted against another diaphragm to actuate a metering valve to accurately mix air and fuel vapor for delivery to the engine intake manifold. The full on-and-off action of the metering valve ensures a consistantly accurate air fuel ratio; and the use of the diaphragms themselves as the moving valve elements results in less expense and greater reliability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.