Crown Equipment Corporation

Walter Conley, Iii

Ned E Dammeyer

Timothy A Wellman

Mark E Addison

Joe K Hammer

Karl L Dammeyer

Stephen Mangette

Kim A Klopfleisch

Kim A Klopfeisch

A module capable of operating on one of first and second vehicles includes an input table having a superset of input elements, with a first subset of input elements related to a first set of hardware devices on the first vehicle and a second subset related to a second set of hardware devices on the second vehicle. The module includes at least one configuration table with configuration elements corresponding to ones of the superset of input elements, wherein each configuration element has data related to transforming a value associated with an input element. The module includes vehicle function input elements related to function inputs utilized on the vehicles; and structure for determining a value of an input element corresponding to a function input element, transforming the value to a transformed value and linking the transformed value with the corresponding function input element.

Vehicle control module with signal switchboard and input tables

A control module capable of operating on one of first and second vehicles can include a) a module output table comprising a superset of module output elements comprising a first subset of module output elements related to a first set of hardware devices provided on the first vehicle and a second subset of module output elements related to a second set of hardware devices provided on the second vehicle; b) vehicle function output elements related to vehicle function outputs utilized on the first and second vehicles; and c) a configuration table comprising configuration elements corresponding to the module output elements. The module can also include computer-based structure for determining a value of a vehicle function output element corresponding to a module output element of the module output table, transforming the value to the transformed value, and storing the transformed value based on the corresponding module output element.

Vehicle control module with signal switchboard and output tables

The operational fitness of a magnetic sensor for detecting buried magnets can be tested from time to time by an electromagnet installed in proximity to the sensor. The electromagnet is a small coil of wire mounted near the sensor, such as a Hall effect device, which when energized, generates a test magnetic field. The analog output of the sensor is compared with preestablished values when the electromagnet is energized to verify the proper operation of the sensor; it is also compared with preestablished values when sensing buried magnets to confirm operation of the sensor, the strength of the buried magnet, and the alignment of the sensor with respect to the magnet. A threshold detector senses the output of the sensor to indicate when a magnetic field is detected, and the peak analog output of the sensor is stored and compared to a reference after the sensor passes the magnet. The sensors are normally tested whenever the vehicle is initially powered up or after the vehicle has been stopped for a predetermined time.

Method and apparatus for monitoring the proper operation of a control

Method and apparatus for monitoring the proper operation of a hall

A fork extension and retraction system for use with stockpickers automatically extends and retracts hydraulically extendable forks of a stockpicker when the load handler carrying the forks has moved to its extended position on the load side of the vehicle, and it also automatically retracts the forks if they have drifted from a home position before performing other fork related activities. Switches in the fork carriage assembly sense when the extendable forks are in the home position and near the home position. Other switches sense when the load handler assembly has reached its extreme positions on either side of the operator's platform. Still other switches are used to slow the traverse movement of the load handler assembly as it approaches its extreme positions, thus to cushion the shock of the load handler stopping. A control circuit senses the condition of these switches and controls the operation of both the load handle and the fork extension hydraulic system.

Extend and retract control for fork lifts

The precise and smooth control of the hydraulic fluid supplied to a hydraulic system, such as the lifting cylinders of a turret stockpicker, under varying operating conditions includes an optical encoder on the operator's control handle connected to an electronic control of a hydraulic pump motor, which s initially operated at a predetermined minimum speed, and a hydraulic valve which provides the initial control of hydraulic fluid under the control of an operator's handle. Because the pump is initially at a low speed, greater efficiency of the system is realized, an important feature in a battery operated vehicle. As the operator moves the handle from the off or neutral towards the fully open position, the hydraulic valve will open and reach its fully open position as the handle passes approximately the one-third on position. Pump motor speed is maintained at a minimum speed until the hydraulic valve is almost opened, and then the pump motor speed will be increased at a predetermined rate until its maximum speed has been obtained with the handle being almost fully on. The last few degrees of movement of the handle will not cause any further increase in hydraulic pressure or motor pump speed, but it will by-pass an SCR pump motor control circuit, thus further increasing efficiency.

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St. Marys, OH, United States of America

Walter Conley, Iii