Interlock Patents (Class 238/367)
  • Patent number: 11174133
    Abstract: An apparatus for manipulating assembly components into desired configurations and a method for using same, where the assembly component includes a first and second bore set at a first and second transverse angles, for receiving attaching members. The apparatus includes a pair of attaching members that engage the bores to extend toward each other, and a manipulating member securing the base portions of the attaching members to each other. The attaching members may include side struts that relieve side pressure on the bores and may also include internal air passageways. The manipulating member has a length that prevents the secured attaching members from disengaging from their bores, and provides a location for a moving device to indirectly connect to the assembly component. The moving device can move the assembly component in a different directions to achieve different configurations.
    Type: Grant
    Filed: April 24, 2020
    Date of Patent: November 16, 2021
    Assignee: MILLER DOWEL COMPANY
    Inventor: Michael R. Miller
  • Patent number: 5024381
    Abstract: A rail spike for holding a tie plate on a tie, embodied in accordance with the invention so that tie cutting is prevented, spike removal for track maintenance is facilitated, and a free rail load wave is allowed. This preferably is attained by providing the spike with left and right side tapered shoulders and a tapered rear surface, such that a unique wedging and swaging action occurs in the tie plate hole during a final driving of the spike, limiting the depth of penetration of the spike into the tie and securely maintaining the gauge of the tie plate on the tie.
    Type: Grant
    Filed: March 10, 1989
    Date of Patent: June 18, 1991
    Assignee: Stafford Rail Products, Inc.
    Inventor: Richard J. Stafford, III