Deere + Company

Stuart Lee Neagle

Douglas M Gage

Edwin Lee Whisler

Robert Joseph Hachmann

Frederick D Griswold, Jr

Timothy Aloysius Averkamp

Fresh air enters the operator's cab of a work vehicle through a fresh air filter. The fresh air filter is mounted to the operator's cab and is held in place by a door. The door is pivotally mounted to the exterior of the operator's cab, so that the fresh air filter can be serviced from outside the operator's cab. The door is held in place by a latch having a handle that is located inside the operator's cab. The housing is a plastic molded door having integral pivot studs that pivotally engage the operator's cab. The door is provided with a back wall having a first opening located adjacent to the filter and through which fresh air passes to the filter. The door is also provided with louvers for providing a pneumatic path for fresh air to reach the filter. The pneumatic path extends first upwardly from the louvers and then downwardly towards the filter.

Vandal resistant fresh air filter housing

The present invention is directed to a hybrid hydraulic system for a work vehicle having both an open center hydraulic circuit and a close center hydraulic circuit. An internal combustion engine drives a fixed displacement pump and a variable displacement pump. The fixed displacement pump provides hydraulic fluid to the open center circuit which directs hydraulic fluid to a steering circuit and the working circuit through a priority valve. The variable displacement pump provides hydraulic fluid to the close center circuit which directs hydraulic fluid to a braking circuit and a pressure reduction circuit. The pressure reduction circuit directs hydraulic fluid to a pilot control system, a clutch cutoff and a differential lock out. Both pumps receive hydraulic fluid from a common sump and a common suction line. The braking circuit comprises two independent braking circuits. Each of the braking circuits include a manually shiftable regulating valve which is hydraulically balanced between its output and the output of the other regulating valve. In this way, the regulating valves are hydraulically interconnected for piloting each other. The pressure reduction system is provided with a first two position solenoid valve which is fluidically positioned between the variable displacement pump and a pressure reducing valve which directs hydraulic fluid to the pilot control system. A working actuator provides an alternate source of hydraulic fluid which is fluidically coupled to the pilot control system when the first solenoid valve is energized. The pressure reduction system houses the first solenoid valve, the pressure reduction valve, and second and third solenoid valves for directing hydraulic fluid to the differential lock out and clutch cutoff, respectively.

Hydraulic system for a work vehicle

The present invention is directed to a hybrid hydraulic system for a work vehicle having both an open center hydraulic circuit and a close center hydraulic circuit. An internal combustion engine drives a fixed displacement pump and a variable displacement pump. The fixed displacement pump provides hydraulic fluid to the open center circuit which directs hydraulic fluid to a steering circuit and the working circuit through a priority valve. The variable displacement pump provides hydraulic fluid to the close center circuit which directs hydraulic fluid to a braking circuit and a pressure reduction circuit. The pressure reduction circuit directs hydraulic fluid to a pilot control system, a clutch cutoff and a differential lock out. Both pumps receive hydraulic fluid from a common sump and a common suction line. The braking circuit comprises two independent braking circuits. Each of the braking circuits include a manually shiftable regulating valve which is hydraulically balanced between its output and the output of the other regulating valve. In this way, the regulating valves are hydraulically interconnected for piloting each other. The pressure reduction system is provided with a first two position solenoid valve which is fluidically positioned between the variable displacement pump and a pressure reducing valve which directs hydraulic fluid to the pilot control system. A working actuator provides an alternate source of hydraulic fluid which is fluidically coupled to the pilot control system when the first solenoid valve is energized. The pressure reduction system houses the first solenoid valve, the pressure reduction valve, and second and third solenoid valves for directing hydraulic fluid to be differential lock out and clutch cutoff, respectively.

An armrest including a pivotal forward section containing hand controls and an adjustable second section to align with the forward section.

Growing community of inventors

Dubuque, IA, United States of America

Stuart Lee Neagle