Motor vehicles – With means for promoting safety of vehicle – its occupant or... – Responsive to absence or inattention of operator – or...
Patent
1988-07-14
1989-07-04
Bertsch, Richard A.
Motor vehicles
With means for promoting safety of vehicle, its occupant or...
Responsive to absence or inattention of operator, or...
200 85A, B60K 2804
Patent
active
048441961
ABSTRACT:
A loader having hydraulically operated boom and bucket mechanisms controllable from the operator seat is disclosed wherein switches sense the presence of the operator in the seat and the buckling of the seat belt. An electronic controller is operably associated with the seat and belt switches and solenoid valves in the hydraulic system and the starter relay. The controller requires proper sequencing of the activation of the seat and belt switches before permitting the starter to be energized, thereby controlling the starting of the loader engine, or permitting the energizing of the hydraulic solenoid valves to control the flow of hydraulic fluid to the hydraulic cylinders for the boom and bucket. The controller also includes a delay associated with the seat switch so that a reactivation of the seat switch within the delayed period of time would allow the hydraulic system to operate without requiring a resequencing of the activation of the seat and belt switches.
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patent: 4678058 (1987-07-01), Wooters
patent: 4699561 (1987-10-01), Tee
Anderson Mark S.
Ashcroft Dale A.
Clevenger, Jr. James T.
Strosser Richard P.
Bertsch Richard A.
Ford New Holland Inc.
Marquette Darrell F.
Miller Larry M.
Seemar Frank A.
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