Abstract:
An agricultural tool for a tractor tool bar comprises a unit, such as a planter unit, that includes a ground contacting member for performing a working operation on the ground for changing the state of the soil, such as by opening a furrow to receive a seed from the planter unit. A downpressure system for the tool includes a two part telescopic air shock extending between the tool bar and a parallelogram linkage that attaches the unit to the tool bar. A sensor is operatively connected to the portion of the air shock that is attached to the parallelogram linkage for sending a signal representative of the length of the shock to an electronic controller. The controller operates through a feedback loop to attempt to maintain the air shock at a predetermined length which corresponds to a desired amount of downpressure.
Abstract:
A quick connect system for a vehicle steering wheel system includes a sleeve concentrically received around a steering shaft of the vehicle and a hub concentrically received around and releasably secured to the sleeve by at least one fastener. Mating non-rotary interfaces are provided between the shaft and sleeve and the hub and the sleeve when the shaft, sleeve and hub are concentrically arranged relative to one another. The hub is releasably secured to by a plurality of fasteners to a rotatable output member of an auto-steer motor of the steering wheel system to permit steering wheel systems that include auto-steer motors to be installed on the steering shafts of vehicles not originally equipped with auto-steer motors.
Abstract:
An agricultural tool for a tractor tool bar comprises a unit, such as a planter unit, that includes a ground contacting member for performing a working operation on the ground for changing the state of the soil, such as by opening a furrow to receive a seed from the planter unit. A downpressure system for the tool includes a two part telescopic air shock extending between the tool bar and a parallelogram linkage that attaches the unit to the tool bar. A sensor is operatively connected to the portion of the air shock that is attached to the parallelogram linkage for sending a signal representative of the length of the shock to an electronic controller. The controller operates through a feedback loop to attempt to maintain the air shock at a predetermined length which corresponds to a desired amount of downpressure.