Safety ignition switch

Details Safety ignition switch Safety ignition switch

1992-03-30

1993-08-17

Scott, J. R.

Electricity: circuit makers and breakers

Multiple circuit control

Pivoted contact

200 52R, 200543, H01H 2150, H01H 1700

Patent

active

052371336

ABSTRACT:
A vehicular engine safety switch having two or more functional positions, which includes a removable restraining device such as a clip or a pin which is flexibly attachable to the body or apparel of the vehicle operator. In the primary functional mode, the clip is in place on the switch and the engine may be started. Movement of the operator from the switch by a distance determined by the length of a flexible lanyard removes the clip, and the switch returns under spring pressure to an OFF position. The engine may be restarted with or without the clip in place, the latter condition occurring, for example, if the operator has been ejected from the vehicle. The safety action of the switch is achieved by the interaction of a specially formed detent sleeve and spring-loaded detent ball, and a lock cylinder rotationally and axially spring biased relative to the detent sleeve.

REFERENCES:
patent: 3786892 (1974-01-01), Horton
patent: 3801767 (1974-04-01), Marks
patent: 3821504 (1974-06-01), Schomaker et al.
patent: 3849612 (1974-11-01), Cobb et al.
patent: 3898398 (1975-08-01), Borst et al.
patent: 4250358 (1981-02-01), Gilbertson

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