Patents by Inventor David A. Withrow

David A. Withrow 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: 10137488
    Abstract: A device to level a metal plate fabricated from high-strength steel material includes a frame, a leveling station and a draw device. The leveling station includes a plurality of upper and lower rollers in parallel arrangement and defining a serpentine path. A plunge depth is defined based upon a difference between a top-dead-center point of the lower rollers and a bottom-dead-center point of contiguous upper rollers. A longitudinal spacing and the plunge depth are configured such that the upper rollers and the lower rollers are disposed to impart a bend radius on the metal plate as the metal plate is drawn, via the draw device, through the serpentine path such that the metal plate conforms to the outer peripheral surfaces of the upper rollers and the lower rollers. The bend radius is selected to achieve plastification of the metal sheet.
    Type: Grant
    Filed: May 22, 2018
    Date of Patent: November 27, 2018
    Assignee: Allor Manufacturing Inc.
    Inventors: James Kitson, Anthony Allor, David Withrow
  • Publication number: 20180264531
    Abstract: A device to level a metal plate fabricated from high-strength steel material includes a frame, a leveling station and a draw device. The leveling station includes a plurality of upper and lower rollers in parallel arrangement and defining a serpentine path. A plunge depth is defined based upon a difference between a top-dead-center point of the lower rollers and a bottom-dead-center point of contiguous upper rollers. A longitudinal spacing and the plunge depth are configured such that the upper rollers and the lower rollers are disposed to impart a bend radius on the metal plate as the metal plate is drawn, via the draw device, through the serpentine path such that the metal plate conforms to the outer peripheral surfaces of the upper rollers and the lower rollers. The bend radius is selected to achieve plastification of the metal sheet.
    Type: Application
    Filed: May 22, 2018
    Publication date: September 20, 2018
    Applicant: Allor Manufacturing Inc.
    Inventors: James Kitson, Anthony Allor, David Withrow
  • Patent number: 10010918
    Abstract: A method uses a device to level a metal plate fabricated from high-strength metal material. The method includes providing a serpentine path between a plurality of upper and lower rollers in parallel arrangement to define a longitudinal spacing. The upper and lower rollers are positioned relative to one another such that a plunge depth is defined based upon a difference between a top-dead-center point of the lower rollers and a bottom-dead-center point of contiguous upper rollers, and a longitudinal spacing and the plunge depth are configured such that the upper rollers and the lower rollers are disposed to impart a bend radius on the metal plate as the metal plate is drawn through the serpentine path such that the metal plate bends about the outer peripheral surfaces of the upper and lower rollers. The bend radius is selected to achieve a desired plastification of the metal sheet.
    Type: Grant
    Filed: October 5, 2016
    Date of Patent: July 3, 2018
    Assignee: Allor Manufacturing Inc.
    Inventors: James Kitson, Anthony Allor, David Withrow
  • Publication number: 20180093310
    Abstract: A method uses a device to level a metal plate fabricated from high-strength metal material. The method includes providing a serpentine path between a plurality of upper and lower rollers in parallel arrangement to define a longitudinal spacing. The upper and lower rollers are positioned relative to one another such that a plunge depth is defined based upon a difference between a top-dead-center point of the lower rollers and a bottom-dead-center point of contiguous upper rollers, and a longitudinal spacing and the plunge depth are configured such that the upper rollers and the lower rollers are disposed to impart a bend radius on the metal plate as the metal plate is drawn through the serpentine path such that the metal plate bends about the outer peripheral surfaces of the upper and lower rollers. The bend radius is selected to achieve a desired plastification of the metal sheet.
    Type: Application
    Filed: October 5, 2016
    Publication date: April 5, 2018
    Applicant: Allor Manufacturing Inc.
    Inventors: James Kitson, Anthony Allor, David Withrow
  • Patent number: 4782208
    Abstract: A non-contact cutting system and method cuts a strip of metal into narrow strands having varying width defining successive, longitudinally spaced portions from which end product pieces can be removed. An array of cutting heads is arranged to project cutting beams onto the surface of a metal strip to cut the strand edges in a predetermined pattern whereby a maximum number of end product piece areas is defined on the strip.
    Type: Grant
    Filed: June 1, 1987
    Date of Patent: November 1, 1988
    Inventors: David A. Withrow, Allen W. White