J. I. Case Company

Case Corporation

Charles B Hanson

Robert E Mozingo

David V Martinez

Wayne G Smith

Robert G Draney

Stephen A Youngers

James A Werbin

Mark S Philips

Kenneth W Johnston

Mike E Delaney

A coupling assembly for releasably securing an implement to a work vehicle. The coupling system includes top wedges which are engaged in wedge-shaped sockets, and tapered lower hooks that apply a continuous force to a pin or cylindrical rod which operates to tightly engage the wedges in the wedge-shaped sockets, thereby preventing movement and resultant wear between the engaging portions of the coupling assembly and having the capability of handling heavy, high load inducing attachments as well as existing attachments.

Heavy duty coupler for attaching an implement to work vehicle

A quick coupler for attaching various material handling implements to a lift arm. The quick coupler includes an opening on one end for pivotal connection with the lift arm and a slotted end portion for selective engagement with a mounting pin on the implement. An intermediate portion of the quick coupler includes a mounting or coupler pin that extends laterally beyond the sides of the quick coupler. An actuating mechanism including a push-pull link is connected to the quick coupler for rotating it about the end of the lift arm. The quick coupler includes an element which may be used for lifting or positioning objects while the quick coupler is fully attached to the implement. Each implement is provided with a pair of opposed attachment members which include slots for receiving the outer laterally extending portions of the quick coupler mounting pin. After the quick coupler mounting pin is received within the slots in the attachment members, the pin is trapped therein thereby locking the quick coupler to the implement.

Quick coupler assembly

A variable geometry mounting arrangement for the boom assembly of a backhoe is disclosed which permits relatively great working depths without increasing the overall height of the backhoe assembly in its raised, transport position. The arrangement includes a bellcrank coupler assembly operatively interposed between a swing tower and boom assembly of a backhoe, with a gearing arrangement provided operatively connecting the boom and the swing tower. By this construction, the vertical disposition of the horizontal pivot axis of the boom is altered as the boom is pivoted. The bellcrank coupler asembly provides a central anchor for the hydraulic fluid boom actuator of the backhoe, and permits the actuator to work through a relatively large moment arm for enhanced performance, and further permits use of a relatively simpified box-section boom construction.

Variable geometry mounting arrangement for backhoe assembly

A material handling implement is disclosed having a multi-mode steering system embodying the principles of the present invention. The implement includes an articulable frame having front and rear frame portions which can be selectively articulated by an articulating hydraulic motor operatively connected thereto. The implement further includes steerable front wheel assemblies mounted on the front frame portion which can be selectively steered by operation of a steering hydraulic motor. An electrical control network is provided whereby the operator of the implement may selectively choose either conventional front wheel steering or articulated steering only. Additionally, this system includes first and second rotational sensors respectively associated with the articulable frame and one of the steerable front wheels. The sensors are electrically joined with the control network of the system whereby the operator may further select combined or coordinated front wheel and articulated steering. By this arrangement, the mode of steering control for the implement can be readily selected as best suits the work operations being performed, thus greatly enhancing the versatility and the efficiency of the implement.

Multi-mode steering system

A selectively positionable pad assembly for the stabilizer of a material handling implement is disclosed wherein the pad assembly includes multiple ground-engaging surfaces. The pad assembly includes a mounting bracket which is pivotally connected to a free end of a vertically movable stabilizer arm for relative movement with respect to the arm about a first axis. The assembly further includes a pivotal pad member pivotally connected to the mounting bracket for relative pivotal movement with respect thereto about a second axis which extends at an acute angle with respect to the first axis. The pivotal pad member includes first and second pad portions which respectively define first and second ground-engaging surfaces. The first ground-engaging surface is provided in a grouser-like configuration for use on relatively soft ground, while the second surface is defined by resilient elastomeric elements for use on relatively hard ground such as asphalt or concrete. A lock pin arrangement is provided for maintaining the selected one of the pad portions in position for use, thus permitting very convenient repositioning of the pivotal pad member for use of the ground-engaging surface which is best suited for the material handling operation to be performed.

Multi-surface stabilizer pad assembly

An improved arrangement for gripping objects is disclosed which is particularly suited for embodiment in association with an excavator having a hydraulic hammer. The arrangement includes a gripping arm assembly operatively associated with the hydraulic hammer, including a gripping arm selectively movable with respect to the hammer. The arrangement can further include a detachably mountable clamping arm assembly adapted to be attached to the dipper arm of the excavator. The gripping arm and clamping arm assemblies are adapted to cooperate with each other with a claw-like working action to facilitate gripping of objects, such as material broken with the hydraulic hammer.

Implement with gripping arm assembly for a backhoe

A bucket for use in conjunction with earth working and material handling implements having a plurality of tooth members associated therewith. The bucket includes a cutting-edge plate secured to the leading edge of a backwall plate. The cutting-edge plate has a plurality of downwardly extending transversely spaced tongue portions associated with a forward end thereof. The tooth members have transverse grooves formed in the upper surfaces thereof for receipt of the tongue portions. Each tooth member has a pair of oppositely disposed beveled portions to permit reversal thereof on the cutting-edge plate.

Bucket tooth attachment means

An improved clamping arm assembly for a backhoe or similar excavator includes an arm link adapted to be fixedly mounted beneath the lower surface of the dipper arm of the excavator. A clamping arm is pivotally connected with the arm link, and is movable into and out of engagement with the bucket of the excavator by a fluid actuator in order to provide a claw-like working action. The clamping arm assembly includes a pair of mounting plates respectively disposed on opposite sides of the dipper arm which are adapted to engage support pins on the arm, and a lock bolt arrangement for detachably fixing the assembly to the dipper arm of the excavator.

Growing community of inventors

Burlington, IA, United States of America

Charles B Hanson