Vacuum shutdown system

Details Vacuum shutdown system Vacuum shutdown system

2006-03-07

2006-03-07

Yuen, Henry C. (Department: 3747)

Internal-combustion engines

Accessories

Covers, trays, vibrators, corrosion inhibitors, air filters

C261S072100

Reexamination Certificate

active

07007658

ABSTRACT:
A device for shutdown of an internal combustion engine which provides for the cessation of fuel and air mixture in a carburetor supplying the cylinders of the engine with fuel for ignition. The device features a conduit in sealed engagement with the fuel supply bowl of the carburetor which may by switched from engagement between the atmosphere or a negative air pressure supply. When switched to communication with negative air pressure the device causes a vacuum in the fuel bowl of the carburator thereby ceasing fuel flow and shutting down the engine due to lack of fuel.

REFERENCES:
patent: 3789812 (1974-02-01), Berry et al.
patent: 4175526 (1979-11-01), Phelan
patent: 6371074 (2002-04-01), Keller
patent: 6615792 (2003-09-01), Grifka et al.

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