Patents Represented by Attorney Marshall, Gersstein & Borun LLP

Find this attorney in the Justia Lawyer Directory

  • Roof truss shoe having wedge retention device and method of using the same
    Patent number: 7717650
    Abstract: A truss shoe for a mine roof truss comprises a base having a pair of ends, a curved side extending between the ends, a top side, and a bearing surface. The shoe includes an angled stanchion having a bore and a housing having a tapered bore, with a recess between the housing and stanchion. A retainer is sized to fit in the recess, with the retainer having an aperture disposed adjacent an end such that the blocks a portion of the opening of the bore in the housing to retain a wedge assembly in the tapered bore.
    Type: Grant
    Filed: October 10, 2006
    Date of Patent: May 18, 2010
    Assignee: Dywidag-Systems International, U.S.A., Inc.
    Inventors: Tony Reschke, Roland Walker, Raymond Brandon