Abstract: A hydraulic control circuit operable to selectively hydraulically link first and second hydraulic actuators and to bypass that hydraulic link.

Abstract: A telescoping weigh fork unit where a base fork has an integrated hydraulic cylinder and a slideable outer shoe on which are supported at least two load cells. Optionally the unit may include an outside telescopic fork shoe to which the load cells are mounted and which supports the outer shoe. Unit may further include a system to alert if distance or weight thresholds are exceeded or if a load cell is inoperable.

Abstract: A hydraulic control circuit operable to selectively hydraulically link first and second hydraulic actuators and to bypass that hydraulic link.

Abstract: The improved hydraulic system utilizes a secondary hydraulic force control circuit that changes the gripping force on the load independently of movement of the clamp arms.

Abstract: A load-bearing assembly including a clamping-force sensor in a pivoting support assembly that is adjustable to vary a radial spacing between a pivot pin and a clamp pad mounted on the support assembly. A plurality of clamping-force sensors may be included in a plurality of pivoting clamp pad support assemblies to support a clamp pad and may be arranged to sense the magnitude of a clamping force exerted by a particular adjustable pivoting clamp pad support assembly and send signals indicative of the magnitude of the force to a controller. A load sensor may be located between a pivot pin and a bearing block, or strain gauges may be mounted in the pivoting bearing block so as to measure forces carried through the bearing block. Force values sensed and transmitted to the controller may be used to evaluate and adjust the clamp arm assembly to grasp a load with a desired clamping force or distribution of clamping forces.

Abstract: Depth detector assemblies for material handling attachments are disclosed. In some embodiments, the depth detector assemblies may include at least one ultrasonic sensor removably attached to the material handling attachment. The depth detector assemblies may additionally include a controller removably attached to the material handling attachment and capable of receiving signals from the at least one ultrasonic sensor. The depth detector assemblies may further include a light display capable of being selectively illuminated by the controller to indicate depth of a load relative to the material handling attachment based on the received signals from the at least one ultrasonic sensor.

Abstract: A swing frame roll clamp may include a mounting plate mountable to a lift truck and a pair of opposed clamp arms. The clamp arms may be configured to selectively and alternately grasp and release a cylindrical load, and each opposed clamp arm may be capable of becoming either a short arm or a long arm relative to the other opposed clamp arm.

Abstract: A telescoping weigh fork unit where a base fork has an integrated hydraulic cylinder and a slideable outer shoe on which are supported at least two load cells. Optionally the unit may include an outside telescopic fork shoe to which the load cells are mounted and which supports the outer shoe. Unit may further include a system to alert if distance or weight thresholds are exceeded or if a load cell is inoperable.

Abstract: A material handling clamp having a proportional relief valve delivering pressurized fluid to clamp arms that grasp a load, and having a controller configured to receive load geometry data and variably control the proportional relief valve to provide a target clamp force.

Abstract: A hydraulic control circuit operable to selectively hydraulically link first and second hydraulic actuators and to bypass that hydraulic link.

Abstract: A hydraulic control circuit operable to selectively hydraulically link first and second hydraulic actuators and to bypass that hydraulic link.

Abstract: A load alignment aid with range finding sensors positioned diagonally on a mounting platform to calculate range, vertical alignment, and horizontal alignment. Each sensor measures a distance (d) from the mounting platform to the load. Where d(1) does not equal d(2) and d(1) does not equal d(3), a misalignment due to tilt or chassis misalignment is detected. The aid further includes a display which may show a graphic representation of the approach to a load and an alert for misalignment notification.

Abstract: A telescoping weigh fork unit where a base fork has an integrated hydraulic cylinder and a slideable outer shoe on which are supported at least two load cells. Optionally the unit may include an outside telescopic fork shoe to which the load cells are mounted and which supports the outer shoe. Unit may further include a system to alert if distance or weight thresholds are exceeded or if a load cell is inoperable.

Abstract: A lever-based clamping device.

Abstract: Attachment assemblies for industrial material handling equipment are shown and disclosed. In some embodiments, the attachment assembly includes a carriage assembly having a carriage and a linear actuator fixedly attached to the carriage. The carriage is mountable to industrial material handling equipment. The attachment assembly additionally includes a frame assembly slidably connected to the carriage. The attachment assembly further includes a faceplate assembly fixedly attached to the frame assembly. The faceplate assembly is configured to receive one or more support members for supporting a load. The faceplate assembly includes one or more load cells configured to measure horizontal and vertical forces applied to the one or more support members. The linear actuator slides the frame assembly laterally relative to the carriage assembly.

Abstract: A fork-carriage apparatus for a lift truck and configured for pulling a load, including: (a) a mounting frame assembly; (b) a side shifter frame assembly slidably mounted to the mounting frame assembly; (c) a pivot frame assembly pivotably mounted to the side shifter frame assembly for translating therewith; (d) a fork assembly mounted to the pivot frame assembly for pivoting therewith; and (e) at least one load-pulling connector mounted to the pivot frame assembly and configured to connect the load to the fork-carriage apparatus for pulling the load.

Abstract: Attachment assemblies for industrial material handling equipment are shown and disclosed. In some embodiments, the attachment assembly includes a carriage assembly having a carriage, wherein the carriage is mountable to industrial material handling equipment. The attachment assembly additionally includes a frame assembly connected to the carriage. The attachment assembly further includes a faceplate assembly fixedly attached to the frame assembly. The faceplate assembly is configured to receive one or more support members for supporting a load. The faceplate assembly includes one or more load cells configured to measure horizontal and vertical forces applied to the one or more support members.

Abstract: Hydraulic valve circuitry adapted for hydraulic connection to a lift truck having a mast and at least one lift cylinder for alternately raising and lowering the mast. The hydraulic assembly is also adapted for hydraulic connection to an attachment to the lift truck, the attachment having opposed clamps actuated by respective clamp cylinders. The hydraulic assembly preferably comprises a valve circuit capable of causing the at least one lift cylinder to be an accumulator.

Abstract: A quick coupler which features a safety mechanism which facilitates ease of use and assures safe use in the workplace by use of hydraulic circuits designed to automatically reset the safety locking mechanism on intentional removal of a front pin, including use of a 2-line hydraulic supply to the coupler.

Abstract: A side shift limiting attachment for a material handing vehicle alerts the vehicles operator and restricts side shifting, lifting, tilting and/or rotation of the attachment when the side shift displacement is approaching or has reached a limit for a lift height.