Deere & Company

Boris Trifunovic

Scott Svend Hendron

Paul John Ernst

A work machine () comprises an operator input device (), an electro-hydraulic system (), and a controller unit () that communicates with the operator input device () and the electro-hydraulic system (). The controller unit () is programmed to operate the electro-hydraulic system () in a manual-control mode and an auto-control mode, and is adapted to activate the auto-control mode in response to displacement of the operator input device () to an activate-auto position relative to a neutral position () of the operator input device (), and both deactivate the auto-control mode and activate the manual-control mode in response to displacement of the operator input device () from the neutral position through a non-responsive deadband () about the neutral position () to an activate-manual position. An associated method is disclosed.

Hydraulic function mode control

A backhoe loaderwith a controllerthat uses angular signals from at least one sensor to calculate a loader tool angle with respect to the vehicle frameor with respect to the earth and to maintain the loader tool angle via controller generated commands to a tool actuatoras a function of the angular signals and commands to a boom actuator. The controllerenables proportional control of the tool angle via a command input device such as an electronic joystick. If the electronic joystickis moved to an appropriate detent position, the controller executes a return to carry function. If the boomis at or below the return to carry angle at the time the joystickis moved to the detent position, the controllerexecutes a float function allowing the bucketand the boomto rest on the ground and follow the contours of the earth as the vehicle moves over the earth.

Electronic parallel lift and return to carry or float on a backhoe loader

A work machine () comprises an operator input device (), an electro-hydraulic system (), and a controller unit () that communicates with the operator input device () and the electro-hydraulic system (). The controller unit () is programmed to operate the electro-hydraulic system () in an auto-control mode, and adapted to override the auto-control mode in response to predetermined behavior of the operator input device (). An associated method is disclosed.

Hydraulic function control with auto-control mode override

A backhoe loader with a controller that uses angular signals from at least one sensor to calculate a loader tool angle with respect to the vehicle frame or with respect to the earth and to maintain the loader tool angle via controller generated commands to a tool actuator as a function of the angular signals and commands to a boom actuator. The controller enables proportional control of the tool angle via a command input device such as an electronic joystick. If the electronic joystick is moved to an appropriate detent position, the controller executes a return to carry function.

Electronic parallel lift and return to carry on a backhoe loader

A work vehicle includes a multiple mode operational system having a work system such as a linkage and associated hydraulic cylinders of a backhoe, a braking system and a multiple mode control system. The multiple mode control system includes a central controller, a mode toggle switch and a work system control device such as an electromechanical joystick. The central controller is capable of entering at least a first operational mode and a second operational mode. In the first operational mode, the central controller manipulates the work system based on signals received from the work system control device. In the second operational mode, the central controller controls the braking system based on signals received from the work system control device.

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Durango, IA, United States of America

Boris Trifunovic