Patents by Inventor Wayne L. Murr

Wayne L. Murr has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5890754
    Abstract: A grapple claw for attachment to a backhoe adapted to be interchangeable with a standard backhoe bucket. Grapple claw (10) includes a main frame member (50), a pivoting stop member (52) that engages the arm (30) and restricts the rotation of the frame (50) around the arm's distal end (35). Grapple claw (10) also includes at least a pair of opposing interlocking claws (54) and (56), respectively pivotally secured to the frame (50). In this regard, claw (54) pivots about fulcrum point (55) and claw (56) pivots about fulcrum point (57). A rotation imparting device (60) is pivotally connected between ram (45) and claws (54) and (56) for applying moments in opposite directions about fulcrum points (55) and (57) to effect the opening and closing of claws (54) and (56). Thus the opening and closing of claws (54) and (56) is accomplished by a single hydraulic ram is accomplished and the necessity for an auxiliary hydraulic circuit and associated ram is alleviated.
    Type: Grant
    Filed: November 21, 1997
    Date of Patent: April 6, 1999
    Inventor: Wayne L. Murr