Grapple with universal attachment device
OwnerRobert H. Wolin, William E. Wolininventors
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OwnerRobert H. Wolin, William E. Wolininventors
Estimating the term…
An attachment device for releasably attaching a grapple to the end of a boom. The device includes a grapple body which mounts main and linkage pins which releasably couple with double pin mounting structures of different sizes and configurations. Hydraulic actuators within the housings on either side of the grapple are operated to open and close the jaws of the grapple under influence of an hydraulic control circuit. Tapered lock bushings are provided to releasably mount the main pins within openings in side walls of the housings. Adapter blocks are provided for mounting the ends of the linkage pins to the housings walls. A fastening arrangement for securing the adapter block enables the linkage pin to be mounted at different separation distances from the main pin to accommodate different types of pin mounting systems that may be encountered on vehicles at different job sites.
Grapple apparatus for attachment to the end of a boom for use in grasping or lifting or moving objects, the grapple apparatus comprising the combination of first and second supports each of which has a proximal end and a distal end, the first and second supports being mounted together at said proximal ends to at least one free-floating force resisting element for pivotal movement about a first axis, a first actuator mechanism carried by the second support, the first actuator mechanism extending or retracting in length responsive to being actuated, said force resisting element being mounted to said first actuator mechanism about a second axis, the force resisting element having one arm portion which extends radially out from the first axis, said second axis being located at a distal end of said one arm portion, the first actuator mechanism being pivotably mounted between said distal end of said one arm portion of the force resisting element and the distal end of said second support, a second actuator mechanism carried by the first support, the force resisting element comprising an other arm portion which extends radially out from the first axis at an acute angle from said one arm portion, the second actuator mechanism being pivotably mounted about a third axis located on the distal end of the other arm portion of the force resisting element, and mounted between the third axis and the distal end of the first support, said second actuator mechanism functioning to change the location of said second axis, said first and second actuator mechanisms being connected to work in unison.
A grapple apparatus comprising:
Dependencies are inferred from the claim text.