Fuel shutoff system
US6213083A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 19, 2000 |
| Grant date | Apr 10, 2001 |
| Priority date | — |
| Expiry date | Jan 19, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M7/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel shutoff system that is usable on engines without a battery, and is inexpensive to manufacture. The fuel shutoff system operates without interfering with the engine governor, and effectively blocks the fuel flow downstream of the fuel bowl upon engine shutdown. One aspect of the invention is a fuel shutoff system for an internal combustion engine, wherein the engine has a carburetor with a fuel bowl and a fuel nozzle, an intake valve, and a fuel conduit between the fuel bowl and the intake valve. The invention includes a blocking member for selectively blocking the fuel conduit downstream of the fuel bowl to substantially prevent passage of fuel to the intake valve, and a manually-operable control for actuating the blocking member. In each embodiment, the engine includes a gas passageway through which a gas may pass to an intake valve of the engine, and the engine has a throttle valve disposed in the passageway, and the blocking member is distinct from the throttle valve. One embodiment of the invention includes a mechanically operated blocking member for selectively blocking fuel from flowing into the fuel nozzle. Another embodiment of the invention includes a blocking membe…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.