One or more sensors identify a characteristic of a towed implement using non-visual electromagnetic radiation, auditory detection or temperature detection. The characteristic of the implement is compared to a reference characteristic to determine whether the implement has a problem. If so, control signals are generated to control a controllable subsystem based upon the identified problem.

This invention related to a coupler for securing an attachment to an earth working machine. The coupler comprises a coupler body that presents a receptacle having a capture region. A pin of an attachment can move into and out of the capture region. A retainer can capture the pin in the capture region but the retainer can be moved by a hydraulically driven driver to a position to allow release the pin from the capture region. A trigger that the pin will strike when the pin moves into or out of the capture region, decouples the driver from the retainer and the retainer is then allowed to be biased back to its retaining position by a spring.

A hitch for connecting an implement to a vehicle. The hitch comprises a first frame for attachment to the vehicle and a second frame for attachment to the implement. The hitch further comprises a mechanism for connecting the first frame to the second frame. The connection of the first frame to the second frame provides for connecting the implement to the vehicle when the first frame is attached to the vehicle and the second frame is attached to the implement.

The objective of the present invention is to provide a work vehicle where an operator can, on the work vehicle side, confirm which working machine is engaged and set which working machine to engage. A tractor, to which a working machine can be mounted, is provided with: a liquid crystal panel selectably displaying an engageable working machine mounted and displaying the currently engaged working machine so as to be identifiable; an operation unit (encoder dial, enter button, and command buttons) for carrying out selection and determination operations for the working machine displayed on the liquid crystal panel; and a control device that, when a determination operation is carried out by the operation unit for a desired working machine, disengages the currently engaged working machine, and configures the working machine for which the determination operation has been carried out to be engaged.

The objective of the present invention is to provide a work vehicle where an operator can, on the work vehicle side, confirm which working machine is engaged and set which working machine to engage. A tractor, to which a working machine can be mounted, is provided with: a liquid crystal panel selectably displaying an engageable working machine mounted and displaying the currently engaged working machine so as to be identifiable; an operation unit (encoder dial, enter button, and command buttons) for carrying out selection and determination operations for the working machine displayed on the liquid crystal panel; and a control device that, when a determination operation is carried out by the operation unit for a desired working machine, disengages the currently engaged working machine, and configures the working machine for which the determination operation has been carried out to be engaged.

A towed agricultural implement including a first headstock element for connection to a towing vehicle, a second headstock element supporting a chassis member provided with a plurality of working implements, a pivot pin for connecting the first headstock member and the second headstock member and defining a horizontal axis of rotation between the first headstock member and the second headstock member, in which the second headstock member has a lateral centre of gravity offset from the axis of rotation. A compensating structure is provided between the first headstock member and the second headstock member to offset the unbalanced loads caused by the lateral centre of gravity being offset from the axis of rotation.

A towed agricultural implement including a first headstock element for connection to a towing vehicle, a second headstock element supporting a chassis member provided with a plurality of working implements, a pivot pin for connecting the first headstock member and the second headstock member and defining a horizontal axis of rotation between the first headstock member and the second headstock member, in which the second headstock member has a lateral centre of gravity offset from the axis of rotation. A compensating structure is provided between the first headstock member and the second headstock member to offset the unbalanced loads caused by the lateral centre of gravity being offset from the axis of rotation.

A header positioning assembly for adjusting a header relative to a chassis includes a lift mechanism configured to couple the header to the chassis, at least one lift actuator configured to apply a force to the lift mechanism to adjust and maintain an orientation of the lift mechanism relative to the chassis, and an adjustment mechanism coupled to the at least one lift actuator or to the lift mechanism. The adjustment mechanism is positionable in at least two orientations and configured so that when the adjustment mechanism is in the at least two orientations, and without uncoupling the adjustment mechanism from the at least one lift actuator or the lift mechanism to which the adjustment mechanism is coupled, the adjustment mechanism changes one or more of a location and a direction of the force applied to the lift mechanism by the at least one lift actuator.

A carrier arm assembly for an operating unit of an agricultural machine includes a carrier arm having a base part and an extending part that is telescopically adjustable relative to the base part to adjust the length of the carrier arm between an unextended configuration and an extended configuration. The base part and the extending part both include a set of bearing surfaces that are configured to enable sliding movement of the extending part relative to the base part. The bearing surfaces of the base part include upper inclined bearing surfaces and lower inclined bearing surfaces, and the bearing surfaces of the extending part include upper inclined bearing surfaces and lower inclined bearing surfaces, which are configured to engage respectively the upper inclined bearing surfaces and the lower inclined bearing surfaces of the base part.

A carrier arm assembly for an operating unit of an agricultural machine includes a carrier arm having a base part and an extending part that is telescopically adjustable relative to the base part to adjust the length of the carrier arm between an unextended configuration and an extended configuration. The base part and the extending part both include a set of bearing surfaces that are configured to enable sliding movement of the extending part relative to the base part. The bearing surfaces of the base part include upper inclined bearing surfaces and lower inclined bearing surfaces, and the bearing surfaces of the extending part include upper inclined bearing surfaces and lower inclined bearing surfaces, which are configured to engage respectively the upper inclined bearing surfaces and the lower inclined bearing surfaces of the base part.