The present invention relates to wedge coupler lug brackets for attachment to an implement to permit connection of a wedge coupler on the work arm of a primary mover such as a back hoe, excavator or loader. The wedge hook brackets comprising a pair of lugs each lug having a rear facing hook section, a saddle section, the rear facing hook section and saddle section configured and adapted to accommodate bosses on the wedge coupler on the work arm that transfer the digging force from a powerlink of the primary mover to the attachment and wedge bar receiver sections to receive a wedge bar on the wedge coupler. The wedge bar receiver section is configured and adapted, in combination with the rear facing hook section, to retain the attachment to the wedge coupler by engagement with both lugs across the width of the pair of wedge coupler lug brackets mounted on the attachment.

A quick coupler primary lock arrangement includes a fore-and-aft guided wedge arrangement carried by a cross shaft and is biased forwardly to a lock position by a first spring arrangement, and includes a secondary lock arrangement includes a locking pawl arrangement pivotally mounted to the cross shaft and biased, by a second spring arrangement, to a secondary lock position wherein the pawl arrangement includes a surface disposed in a confronting locking disposition relative to an abutment surface of a fixed plate of the coupler to thereby prevent rearward movement of the wedge arrangement from the lock position. A normally depressurized hydraulic cylinder is coupled to the pawl arrangement and when selectively pressurized overcomes spring biasing forces and pivots the pawl arrangement from the secondary locking position and then shifts the wedge arrangement rearward to a coupler release position. An electro-hydraulic control arrangement prevents unintentional operation of the hydraulic cylinder.

An excavation machine and a coupler system for use on the excavation machine to allow a universal adaptor for the attachment of skid steer attachments to be joined directly to a working end of a main lifting boom of the excavation machine, the coupler system including a first coupler body having a first rearward portion and a first forward portion, the first rearward portion being connectable to the working end of the lifting boom, the first coupler body having a first mating arrangement, the coupler system further including a second coupler body that is secured or securable relative to the universal adaptor, the second coupler body having a second mating arrangement that is selectively securable to the first mating arrangement to selectively secure the universal adaptor directly relative to the working end of the lifting boom of the excavation machine thereby allowing the excavation machine to use both skid steer attachments such as an associated skid steer bucket attachment joined directly relative to the working end of the lifting boom and a traditional dipper stick.

There is described a bracket for mounting an excavation bucket on a coupler of an articulated arm. The bracket comprises a body extending in a plane and having a central portion. This bracket allows reversible mounting of the coupler of the excavation bucket by providing two pairs of adjacent concavities at a front and at a rear portion of the body which can alternately hold a corresponding pair of hinge shafts of a coupler in either orientation. Abutments at the front and at the rear are provided to further retain the coupler in the mounting bracket in either configuration. A bottom of the mounting bracket comprises notches that fit with corresponding portions of the bucket for improved securing of the bucket assembly on the mounting bracket.

A universal backhoe bucket coupler for a work machine includes a first pair of apertures positioned to be spanned by the mounting flanges of a first style bucket having mounting holes for receiving at least one front mounting pin, a second pair of apertures positioned to be spanned by the mounting flanges of a second style bucket having mounting holes for receiving at least one front mounting pin. A pair of like pivotal spacers is disposed laterally intermediate corresponding outer and inner side portions of the coupler and are pivotable between stowed positions and deployed positions aligned with the first pair of apertures for minimizing lateral bucket motion.

A lifting arm assembly for lifting an elongate element includes a lifting arm comprising a complementary fastener and at least one fastening element, and a holder for at least one tool which comprises a first complementary fastening device. The holder is configured to be replaceable. The holder comprises a suspension device configured to fasten to the complementary fastener on the lifting arm, and at least one first receiving device configured to cooperate with the first complementary fastening device on the at least one tool.

A hinge attachment bracket for use with a work implement is provided. The bracket comprises a substantial I-beam configuration that includes a first flange, a second flange, a web that connects the first flange to the second flang and that defines a boss that defines a pin receiving bore that establishes a radial direction, a radial plane and a longitudinal axis. The first and second flanges may merge toward each other tangentially forming a first extension portion.

A loader coupler includes left and right spaced-apart inner rib mounts including inner mount pins connected to a body, and left and right inner locking regions aligned with the left and right inner rib mounts. The coupler includes left and right spaced-apart outer rib mounts including outer mount pins connected to the body, and left and right outer locking regions aligned with the left and right outer rib mounts. The coupler includes a lock system including: (i) left and right first lock plungers that move between locked and unlocked positions relative to the left and right inner locking regions, respectively; and, (ii) left and right second lock plungers that move between locked and unlocked positions relative to the left and right outer locking regions, respectively. The left and right outer mount pins and/or the left and right inner mount pins are removable from the body.

A quick hitch for mounting an implement on a machine. The quick hitch has at least one mounting means for connection to a machine and a securing means for securing the quick hitch to an implement. The quick hitch also has at least one removable plate for engagement with a surface of an implement.

A quick hitch for mounting an implement on a machine includes mounting means for connection to a machine and a securing means for securing the quick hitch to an implement. The securing means includes an over-center mechanism and a locking member. The over-center mechanism includes a first member pivotal at a axis D relative to a chassis, a first end of a first link pivots at axis E relative to a first arm of the first member, and a second end of the link pivots at axis F member. When the securing means in a first position with the hitch secured to an implement, axis E lies on a first side of a line between axes D and F. When in a second position with the hitch unattached, axis E lies on a second side of a line between axes D and F.