Patents by Inventor Mark G. Crawford

Mark G. Crawford 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: 7832173
    Abstract: Screw fasteners are used to connect multiple trusses in side-by-side relationship. The screw fasteners join truss wood members which are in edge to edge relationship with the screws being driven through the edge of each wood member. The screws may be knurled screws as described in U.S. Pat. No. 6,109,850; lag screws, or standard screws. The connection may also join wood board members in edge-to-edge relationship when bending of the wood members is limited by a restraining structure.
    Type: Grant
    Filed: December 1, 2000
    Date of Patent: November 16, 2010
    Assignee: Simpson Strong-Tie Company, Inc.
    Inventors: Mark G. Crawford, Steven E. Pryor, Alfred D. Commins
  • Patent number: 6993882
    Abstract: The present invention provides an apparatus for spacing structural members, in particular roof trusses, during construction and for permanently bracing the same structural members. The apparatus comprises three longitudinal members with a top attachment tab at each end that is fastened to the top side of each structural member and a pair of flanges at each end that are fastened to the facing sides of each structural member. In particular, the apparatus includes portions that reinforce the ends of ends of the second and third longitudinal members. The apparatus is preferably made in a length that is standard for spacing roof trusses, most commonly a nominal 24?. This allows the apparatus to be attached to one roof truss, then another, and left to form permanent bracing over which roof sheathing can be laid.
    Type: Grant
    Filed: December 3, 2000
    Date of Patent: February 7, 2006
    Assignee: Simpson Strong-Tie Company, Inc.
    Inventors: Mark G. Crawford, Louay A. Shamroukh, Jin-Jie Lin
  • Patent number: 6988346
    Abstract: The present invention provides a connection having a plurality of parallel structural members. The structural members are bridged by strap member, preferably light gauge steel. The end of the strap member is held in place by an overlapping strap holder. Fasteners hold the strap holder and the strap to the underlying structural member, with at least one passing through only the strap holder into the first side of the the first structural member.
    Type: Grant
    Filed: October 30, 2001
    Date of Patent: January 24, 2006
    Assignee: Simpson Strong-Tie Company, Inc.
    Inventors: Louay A. Shamroukh, Mark G. Crawford
  • Patent number: 6877291
    Abstract: A connection in which an elongated strap or a connector having an elongated strap member is secured by a strap holder. Such straps and connectors are used in a variety of building applications, typically in connections that resist tension forces parallel to the main axes of the straps or strap members. A number of connectors with elongated strap members are in common use with a variety of structural members.
    Type: Grant
    Filed: October 23, 2002
    Date of Patent: April 12, 2005
    Assignee: Simpson Strong-Tie Company, Inc.
    Inventors: Louay A. Shamroukh, Mark G. Crawford
  • Publication number: 20030136059
    Abstract: A connection in which an elongated strap or a connector having an elongated strap member is secured by a strap holder. Such straps and connectors are used in a variety of building applications, typically in connections that resist tension forces parallel to the main axes of the straps or strap members. A number of connectors with elongated strap members are in common use with a variety of structural members.
    Type: Application
    Filed: October 23, 2002
    Publication date: July 24, 2003
    Inventors: Louay A. Shamroukh, Mark G. Crawford
  • Publication number: 20030079419
    Abstract: The present invention provides a connection having a plurality of parallel structural members. The structural members are bridged by strap member, preferably light gauge steel. The end of the strap member is held in place by an overlapping strap holder. Fasteners hold the strap holder and the strap to the underlying structural member, with at least one passing through only the strap holder into the first side of the the first structural member.
    Type: Application
    Filed: October 30, 2001
    Publication date: May 1, 2003
    Applicant: Simpson Strong-Tie Company, Inc.
    Inventors: Louay A. Shamroukh, Mark G. Crawford
  • Publication number: 20010009638
    Abstract: Screw fasteners are used to connect multiple trusses in side-by-side relationship. The screw fasteners join truss wood members which are in edge to edge relationship with the screws being driven through the edge of each wood member. The screws may be knurled screws as described in U.S. Pat. No. 6,109,850; lag screws, or standard screws. The connection may also join wood board members in edge-to-edge relationship when bending of the wood members is limited by a restraining structure.
    Type: Application
    Filed: December 1, 2000
    Publication date: July 26, 2001
    Inventors: Mark G. Crawford, Steven E. Pryor, Alfred D. Commins