Clark Equipment Compnay

Other

Scott B Jacobson

Kenneth A Brandt

Orlan J Loraas

Wally L Kaczmarski

Thomas M Sagaser

Knute K Brock

Mark F Bares

Joseph M Mather

Verne C Watts

James E Asche

Jason Lee Magnuson

Charles E Deyo

Thomas Q Haeder

William A Wright

Ron Hansen

Joseph R Volk

A skid steer loader has an interlock system that is responsive to sensor input to lock out such as operation of lift and tilt cylinders of the skid steer loader when the input indicates a condition has not been met. The loader is provided with a cab that has an operator entrance and egress door, and a door latch and a latch striker on the cab are provided with a sensor that senses when the cab door is closed and latched. The lockout prevents carrying out the functions when the door is not closed and latched.

Sensor and interlock on an industrial vehicle

A power machine or a skid steer loader that is driven by an engine and has hydraulic pump, hydraulic fluid conduit, a hydraulic motor in fluid communication with a hydraulic fluid conduit and a valve that is operated or actuated by linear actuator such that the linear actuator is mounted directly on the valve block.

Power machine with valve mount for valve assembly

A control system controls actuation of a hydraulic cylinder on a skid steer loader. The control system includes a movable element, movable by an operator. A position sensor is coupled to the movable element and provides a position signal indicative of a position of the movable element. A controller is coupled to the position sensor to receive the position signal and provide a control signal based on the position signal. A valve spool controls flow of hydraulic fluid to the hydraulic cylinder. An actuator is coupled to the controller and the valve spool and moves the valve spool in response to the control signal from the controller.

Hand/foot selector for electronic controls on a skid steer loader

A security system for a vehicle includes a keyboard including a start key and a washout key and adapted to receive a user code. A processor is operably coupled to the keyboard for receiving signals indicative of entry of the user code actuation of the washout key and, wherein the processor provides an output signal if the user code is entered and is followed by actuation of the start key. The processor also provides the output signal if the start key has been entered during an adjustable time period after the vehicle has been turned off. However, if the washout key is actuated, the processor does not provide the output signal upon actuation of the start key during the time period after the vehicle is turned off. A controlled device is operably connected to the processor and controls a component of the vehicle to allow the vehicle to start when the output signal from the processor is received.

Keyless ignition system with washout feature

A control system on a power machine which includes a first sensor sensing a first operating condition and providing a first sensor signal. An operator actuable override mechanism provides an override signal in response to actuation thereof. A controller is coupled to the first sensor, a power circuit, a traction lockout mechanism, and the override mechanism. The controller is configured to instate a lockout condition in response to the first sensor signal. The controller selectively overrides the lockout condition based on the override signal, and the first sensor signal.

Traction lock/momentary override

A power attachment is attachable to a power machine which has a power circuit. The power machine also includes an operator input device receiving an operator input and providing an output signal indicative of the operator input. The attachment includes a tool and an actuator, coupled to the tool, to drive the tool. The actuator is also connectable to the power circuit of the power machine. A controller is operably coupled to the actuator and is operably couplable to the operator input device. The controller controls operation of the tool based on an operator input signal provided by the operator input device.

Intelligent attachment to a power tool

A power machine includes a frame and a plurality of power actuators operable coupled to the frame. A power circuit is coupled to the power actuators and provides power to the power actuators. A cab is operably coupled to the frame and defines an operator compartment. The cab includes a seat supported in the operator compartment. A non-contact operator presence sensor is coupled proximate the cab and is configured to sense presence of an occupant in a predefined volume proximate the seat. The operator presence sensor provides a sensor output signal indicative of operator presence. A controller is coupled to the operator presence sensor and is configured to control operation of at least one of the plurality of power actuators based on the sensor output signal.

Non-contact operator presence sensor

Electronic controls on a skid steer loader

A security system for a vehicle includes a keyboard for receiving input codes that comprise user input codes and a start code. A processor is operably coupled to the keyboard for receiving signals indicative of each input user code and the start code, wherein the processor provides an output signal if an input user code corresponds to an user code and is followed by the start code. The processor also provides the output signal if the start code has been entered during an adjustable time period after the vehicle has been turned off. A controlled device is operably connected to the processor and controls a component of the vehicle to allow the vehicle to start when the output signal from the processor is received.

Keyless ignition system with delayed security

A power attachment is attachable to a power machine which has a power circuit. The power machine also includes an operator input device receiving an operator input and providing an output signal indicative of the operator input. The attachment includes a tool and an actuator, coupled to the tool, to drive the tool. The actuator is also connectable to the power circuit of the power machine. A controller is operably coupled to the actuator and is operably coupleable to the operator input device. The controller controls operation of the tool based on an operator input signal provided by the operator input device.

A skid steer loader has an auxiliary coupling device connected to the hydraulic circuit of the skid steer loader. An auxiliary control circuit includes a hydraulic valve coupled between the hydraulic circuit of the skid steer loader and the auxiliary coupling device. The auxiliary control circuit is coupled to an operator input and controls flow of hydraulic fluid between the hydraulic circuit of the skid steer loader and the auxiliary coupling device based on a control signal received from the operator input. In addition, a controller is coupled to an operating mode sensor and to the auxiliary control circuit and provides an output to control operation of the hydraulic valve controlling flow to the auxiliary coupling device based on the status of the operating mode sensor.

Auxiliary interlock control system for power machine

A skid steer loader is adaptable to be used with a hydraulically powered attachment. A hydraulic system in the skid steer loader includes a hydraulic circuit providing fluid under pressure. A first auxiliary control valve is coupled to the hydraulic circuit and is movable between a full open position and a full closed position, and is couplable to the attachment. An operator input device provides a variable operator input signal. A controller is coupled to the operator input device and to the first auxiliary control valve. The controller controls the first auxiliary control valve to move a portion of the way between the full open position and the full closed position based on the operator input signal. This provides smoother control over systems which merely operated the auxiliary control valve in a full open or full closed manner.

Hydraulic control system providing proportional movement to an

A seat assembly and a power machine includes a seat having a front portion, a back portion, and first and second side portions. A base plate supports the seat, and a hinge is pivotably connected between the first side portion of the seat and the base plate. The second side portion of the seat is connected to the base plate to allow limited movement of the second side portion of the seat relative to the base plate. A spring is coupled to the seat and to the base plate and urges the second side portion of the seat away from the base plate. A Hall effect sensor housing supports a Hall effect sensor and is operably mounted to one of the base plate and the seat. A magnet is operably mounted to another the base plate and the seat and is positioned to cooperate with the Hall effect sensor so that the Hall effect sensor provides a sensor indicative of a position of the second side portion of the seat.

Side pivot seat

A sensor for a power machine includes a seat bar which is movably coupled relative to a seat on the power machine. A magnet and a Hall effect sensor are coupled to the seat bar and to the power machine so that they are movable relative to one another based on movement of the seat bar. The seat bar is movable from a first position to a second position. The Hall effect sensor provides a position sensing signal indicating when the seat bar is in one of the first or second positions.

Hall effect sensor assembly

An apparatus controls operation of a power machine which has a frame, a seat supported by the frame, wheels supporting the frame, a drive mechanism for driving the wheels, a lift arm structure manipulated by power actuators, and a power circuit for controlling the actuators. An occupancy sensor is coupled to the power machine for providing an occupancy signal indicative of occupancy in the seat. A traction lockout mechanism locks the drive mechanism to preclude the drive mechanism from driving the wheels. A controller is coupled to the occupancy sensor, the traction lockout device and the power lockout device and controls the traction lockout device and power lockout device based upon the input from the occupancy sensor. A display is coupled to the controller for displaying the indicia indicative of an operational state based on a display output signal provided by the controller.

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Kindred, ND, United States of America

Scott B Jacobson