Service override for loader interlock

Details Service override for loader interlock Service override for loader interlock

1988-02-10

1989-10-03

Bertsch, Richard A.

Motor vehicles

With means for promoting safety of vehicle, its occupant or...

Responsive to absence or inattention of operator, or...

180268, B60K 2804, B60R 2200

Patent

active

048710440

ABSTRACT:
A loader having an engine operably startable in conjunction with the closing of an associated electrical circuit, hydraulically operated boom and bucket mechanisms controllable from the operator seat, and an interlock mechanism requiring a proper sequencing of seat and seat belt switches to enable operation of the engine and hydraulic system is disclosed wherein the electrical circuit is provided with a service override feature that permits the engine to be started without undergoing the proper sequencing of the seat and seat belt switches. Whenever the contrtoller electrical circuit is placed into the service override mode, the hydraulic system cannot be enabled. The service override switch is interconnected with the normal operation switch so that both switches cannot be closed at the same time.

REFERENCES:
patent: 4116296 (1978-09-01), Pleier et al.
patent: 4385863 (1983-05-01), Minor
patent: 4389154 (1983-06-01), Minor et al.
patent: 4392544 (1983-12-01), Dilno
patent: 4466504 (1984-08-01), Giandenoto et al.
patent: 4480713 (1984-11-01), Macht et al.
patent: 4655313 (1987-04-01), Hicks
patent: 4664218 (1987-05-01), Graham et al.

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