Case Corporation

Michael G Nahorny

Byron R Moore

Richard J Lech

Robert T Peterson

Curtis R Lyons

Robert E Wawiorka

Richard A Atkins

Chad E Bement

A system for supplying an implement with hydraulic fluid includes a first hydraulic pump generating a first flow, a second hydraulic pump generating a second flow and a valve assembly adapted to be coupled to the implement and coupled to the first and second flows. The valve assembly couples the first flow to the implement. The valve assembly also selectively adds the second flow to the first flow to provide a low flow or a high flow. The valve assembly couples the first flow to the implement via a first coupling in response to a first signal and via a second coupling in response to a second signal. The system further includes a manually operable control coupled to the valve assembly and movable between the first position which the first signal is generated, a second position in which the second signal is generated and a third position in which a third signal is generated. The system also includes a foot pedal control coupled to the manually operable control and to the valve assembly. The foot pedal generates the first signal in response to the third signal and actuation of the foot pedal control.

Hydraulic fluid supply system

A work vehicle having an improved transmission control circuit, that is responsive to a shuttle shift lever and associated switch that generates a forward signal, a reverse signal and a neutral signal, whereby the transmission control circuit engages the transmission in a forward gear ratio on receipt of the forward signal, a reverse gear ratio on receipt of the reverse signal and places the transmission in neutral on receipt of the neutral signal, and further wherein the transmission control circuit further places the transmission in neutral whenever it receives both a forward and neutral signal, or both a reverse and neutral signal.

Directional control interlock circuit for loader/backhoes and loaders

The disclosure involves an apparatus for detecting coincidence of (a) a vehicle transmission engaged in the power mode and (b) the operator's seat in a 'first' position, i.e., a position other than that from which the vehicle is normally driven. Such apparatus has an annunciator, a first circuit providing a first conductive path when the seat is in the first position and a second circuit providing a second conductive path when the transmission is engaged in the power mode, forward or reverse. When, coincidently, the seat is in such position and the transmission is in the power mode, the first and second circuits coact to energize the annunciator and alert the vehicle operator.

Apparatus and method for signalling coincident machine conditions

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Burlington, IA, United States of America

Michael G Nahorny