Automatic engine ignition shut-off device

Details Automatic engine ignition shut-off device Automatic engine ignition shut-off device

1987-11-30

1989-08-15

Wolfe, Willis R.

Internal-combustion engines

Accessories

Covers, trays, vibrators, corrosion inhibitors, air filters

123198D, F02B 7708

Patent

active

048564710

ABSTRACT:
Apparatus for immediately shutting down the engine of a motor vehicle in the event that the throttle sticks in an open position. A connecting member is secured at one end of the throttle linkage of a carburetor and at the other end to a piston slidably contained within a housing. A cut-off spring acts between the housing and the piston with sufficient force to drive the piston against the push button actuator of a cut-off switch wired into the engine ignition system. The opposite end of the connecting member is attached to the throttle return spring which acts through the connecting member with a greater opposing force than the cut-off spring to prevent the piston from cycling the shut-off switch. In the event the throttle return spring breaks or the throttle linkage becomes jammed in an open position, the cut-off spring is released and the engine immediately shut down.

REFERENCES:
patent: 3273552 (1966-09-01), Plath
patent: 3487183 (1969-12-01), Schulman
patent: 3695379 (1972-10-01), Veilleux
patent: 3798402 (1974-03-01), Raab
"The Solution to Stuck Throttles", Stock Car Racing, Sep. (1987), pp. 58, 59.

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