Clark Equipment Compnay

Alvin A Liebel

Michael D Wetzel

Spencer Lee Mindeman

James M Breuer

Christopher Wayne Lougheed

Doran Hirschkorn

Phillip D Bogner

Spencer L Mindeman

Doran D Hirschkorn

A power machine includes a carrier comprising a supporting frame, an operator compartment and a joystick controller disposed in the operator compartment and configured to generate movement signals in response to operator movement of the joystick controller. An attachment is detachably coupled to the power machine. A carrier control unit is disposed on the carrier and configured to receive the movement signals from the joystick controller. An attachment control unit is disposed on the attachment and configured to control movement of the attachment. A network is coupled to the carrier control unit and to the attachment control unit and is configured to carry instructions from the carrier control unit to the attachment control unit. A state selection input is disposed in the operator compartment to select one of at least two operational states including a carrier state and an attachment state. In the carrier state, the carrier control unit is configured to control operation of the carrier in response to operator movement of the joystick controller. In the attachment state, the attachment control unit is configured to control operation of the attachment in response to operator movement of the joystick controller.

Carrier and backhoe control system and method

A hydraulic control system for a swiveling construction machine includes at least one hydraulic travel motor, a first hydraulic actuation device, a second hydraulic actuation device and a hydraulic diverter valve assembly. The at least one hydraulic travel motor is configured to move the swiveling construction machine in a first travel speed and a second travel speed based on a variable pilot pressure signal. The first hydraulic actuation device is configured to actuate a first function of an implement. The second hydraulic actuation device is configured to actuate a second function of an implement. The hydraulic diverter valve assembly is configured to divert hydraulic power between the first hydraulic actuation device and the second hydraulic actuation device while maintaining operation of the at least one hydraulic travel motor in one of the first and the second speeds.

Hydraulic control system for a swiveling construction machine

Growing community of inventors

Mandan, ND, United States of America

Alvin A Liebel