Patents by Inventor Stuart J. Ledingham

Stuart J. Ledingham 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).

  • Self-tightening compression clip
    Patent number: 5803687
    Abstract: A compression clip of the present invention comprises a bolt and a self-tightening member having two side sections and a grooved intermediate section therebetween. The intermediate section has a hole for receiving the bolt. Preferably, the intermediate section has grooves on both an interior and exterior surface thereof. After tightening of the clip, the intermediate section flattens to become somewhat planar and the side sections are compressed inward to securely engage a guide rail or wear strip within the clip.
    Type: Grant
    Filed: November 14, 1997
    Date of Patent: September 8, 1998
    Assignee: Valu Engineering, Inc.
    Inventor: Stuart J. Ledingham
  • Rail guide support assembly
    Patent number: 5692596
    Abstract: A rail guide support assembly for assembly line and conveyor systems utilizes a split support rod which allows convenient visual confirmation of the positioning of the guide rails. The rod comprises two halves formed longitudinally, and a portion of the rod mates to form an indicator of the guide rail position relative to the conveyor belt and path of the product being conveyed. Adjustable positioning in multiple directions is possible, such that one or more guide rails may be differentially spaced both vertically above and laterally along the conveyor belt. The split rod may also incorporate a contoured design which keys the halves together to facilitate their assembly.
    Type: Grant
    Filed: October 5, 1995
    Date of Patent: December 2, 1997
    Assignee: Valu Engineering, Inc,
    Inventor: Stuart J. Ledingham
  • Tapered clamp support rod
    Patent number: 5626221
    Abstract: A tapered clamp support rod of a rail guide support assembly provides quick and easy insertion and positioning of the rod in a mounting bracket of a conveyor system. The rod may be formed of a plastic which is easily cut to a shorter, less hazardous length.
    Type: Grant
    Filed: October 6, 1995
    Date of Patent: May 6, 1997
    Assignee: Valu Engineering, Inc.
    Inventor: Stuart J. Ledingham
  • Reversible conveyor return guide shoe
    Patent number: 5310047
    Abstract: A conveyor system guide shoe for guiding a conveyor chain or belt from the catenary sag onto a return way, wherein the guide shoe has multiple and reversible wear surfaces, each of the wear surfaces extending the width of the guide shoe. The guide shoe is reversible so that either one of the multiple wear surfaces can be utilized. The guide shoe also has grooves into which the wear strips of the return way can be inserted end-wise. A square support hole is provided through the center of the guide shoe for supporting the guide shoe while preventing its rotation. Support pins are also provided to secure the wear strips within the grooves of the guide shoe.
    Type: Grant
    Filed: November 6, 1992
    Date of Patent: May 10, 1994
    Assignee: Valu Engineering, Inc.
    Inventor: Stuart J. Ledingham
  • Flexible plastic return way for conveyor chains
    Patent number: D336712
    Type: Grant
    Filed: November 9, 1990
    Date of Patent: June 22, 1993
    Assignee: Valu Engineering, Inc.
    Inventor: Stuart J. Ledingham
  • Mounting clip for conveyor system elements
    Patent number: D340564
    Type: Grant
    Filed: November 8, 1991
    Date of Patent: October 19, 1993
    Assignee: Valu Engineering, Inc.
    Inventor: Stuart J. Ledingham