Patents by Inventor Lawrence E. Long

Lawrence E. Long 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).

  • Tensionable cable truss support system
    Patent number: 5913641
    Abstract: A cable truss support system for supporting the roof of a mine includes two cables each having an end secured in the roof of a mine. The other ends of the cables are connected by a twisted ring anchor and are secured to the anchor by wedges through which the cables pass.
    Type: Grant
    Filed: December 19, 1997
    Date of Patent: June 22, 1999
    Assignee: Dyckeroff & Widmann AG of Munich
    Inventor: Lawrence E. Long
  • Mine roof support system
    Patent number: 5238329
    Abstract: A mine roof support system is disclosed having a connector. The connector has a first hole through which one end of a first roof supporting rod is inserted and a second hole through which one end of a second roof supporting rod is inserted. The first and second roof supporting rods are fastened to the connector so as to support the roof of the mine. In order to increase the bending arcs of the connector along which the first and second roof supporting rods bend without increasing the weight of the connector, the holes of the connector may be bevelled to form elliptical openings in the connector and the connector may be canted.
    Type: Grant
    Filed: August 11, 1992
    Date of Patent: August 24, 1993
    Assignee: Dyckerhoff & Widmann AG of Munich
    Inventors: Lawrence E. Long, Klaus M. Langeneckert, Gero Herrmann
  • Mine roof support system
    Patent number: 5193940
    Abstract: A roof support system is disclosed having a first rod extending into a first bore in the roof of a mine, a second rod extending into a second bore into the roof of a mine, a connector having a first hole through which the free end of the first rod is inserted and a second hole through which the free end of the second rod is inserted such that the first rod is held in securing fashion within the connector, and a nut threadably engaged to the second rod at an end of the second rod which exits the second hole of the connector, the connector and the rods forming a roof support system.
    Type: Grant
    Filed: August 23, 1991
    Date of Patent: March 16, 1993
    Assignee: Dyckerhoff & Widmann AG
    Inventor: Lawrence E. Long