Patents Represented by Attorney Zallinger & Burleson Ltd

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  • Progressive linkage for excavator thumb
    Patent number: 7818901
    Abstract: An improved dipper stick, tool, and thumb combination includes a progressive linkage for connecting the thumb to a thumb actuator wherein the pivot axis of the thumb idler link connection is spaced from the pivot axis of the tool idler link connection. The pivot axis of the thumb idler link connection may be offset outwardly from the inner surface of the dipper stick. A mounting plate may be connected to the inner surface of the dipper stick to locate the pivot axis in the offset position.
    Type: Grant
    Filed: August 15, 2008
    Date of Patent: October 26, 2010
    Assignee: ACS Industries, Inc.
    Inventors: Joseph R. Zeno, Christophor Napier, Robert J. Willoughby