Patents by Inventor Howard S. Langdon

Howard S. Langdon 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: 5816866
    Abstract: A tilting terminal clamp having a clamping plate with a central, raised, frusto-conical annulus is provided with an aperture wall having a straight line portion to engage a retaining ring of a screw. This straight wall portion is preferably coined into the annulus aperture which has an upper, inclined wall portion of a greater diameter than the diameter of the straight portion in order to receive a fillet joining the head of the screw to the screw shank. To avoid cutting strands of wire from a clamped, stranded terminal wire, the lower peripheral edge is formed without a sharp burr edge, and a burr edge is formed on the upwardly facing side of the clamping plate. Increased holding power for gripping the terminal wire is provided by extending the serrations from the frusto-conical annulus to the outer peripheral edge of the clamping plate, and by making the serrations increasingly wider and deeper as they flare outwardly from the annulus to the outer, peripheral edge of the clamping plate.
    Type: Grant
    Filed: January 7, 1997
    Date of Patent: October 6, 1998
    Assignee: The Fastron Company
    Inventor: Howard S. Langdon
  • Patent number: 5595512
    Abstract: A tilting terminal clamp having a clamping plate with a central, raised, frusto-conical annulus is provided with an aperture wall having a straight line portion to engage a retaining ring of a screw. This straight wall portion is preferably coined into the annulus aperture which has an upper, inclined wall portion of a greater diameter than the diameter of the straight portion in order to receive a fillet joining the head of the screw to the screw shank. To avoid cutting strands of wire from a clamped, stranded terminal wire, the lower peripheral edge is formed without a sharp burr edge, and a burr edge is formed on the upwardly facing side of the clamping plate. Increased holding power for gripping the terminal wire is provided by extending the serrations from the frusto-conical annulus to the outer peripheral edge of the clamping plate, and by making the serrations increasingly wider and deeper as they flare outwardly from the annulus to the outer, peripheral edge of the clamping plate.
    Type: Grant
    Filed: November 9, 1994
    Date of Patent: January 21, 1997
    Assignee: The Fastron Company
    Inventor: Howard S. Langdon
  • Patent number: 4097112
    Abstract: A tilting terminal clamp assembly including a threaded shank, a clamping plate, and means for retaining the clamping plate on the threaded shank, wherein the clamping plate associated with the threaded shank has a generally polygonal perimeter having 6, 8 or 10 sides to adjustably conform to a terminal body pocket, and having surfaces equipped with radially directed serrations to engage a wire in the pocket.
    Type: Grant
    Filed: May 4, 1977
    Date of Patent: June 27, 1978
    Assignee: Howard S. Langdon
    Inventors: Donald Richard Veldman, Howard S. Langdon