Patents by Inventor John E. Witten

John E. Witten 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).

  • Safety pressure relief apparatus
    Patent number: 4211334
    Abstract: The present invention relates to a safety pressure relief apparatus comprised of a reverse buckling rupture disk having a concave-convex portion connected to an annular flat flange portion by a curved transition connection and a support member having an annular flat flange portion for engaging the annular flat flange portion of the rupture disk and for supporting the transition connection thereof. The support member includes a cutting edge positioned interiorly of the transition connection and forming an opening in the support member so that when the concave-convex portion of the rupture disk reverses itself, the cutting edge severs the disk whereby a portion thereof passes through the opening in the support member. A bar for catching the severed portion of the disk after it passes through the opening in the support member is attached to the support member.
    Type: Grant
    Filed: November 24, 1978
    Date of Patent: July 8, 1980
    Assignee: B S & B Safety Systems, Inc.
    Inventors: John E. Witten, Loren E. Wood, Edward H. Short, III
  • Safety pressure relief apparatus
    Patent number: 4158422
    Abstract: The present invention relates to a safety pressure relief apparatus comprised of a reverse buckling rupture disk having a concave-convex portion connected to an annular flat flange portion by a curved transition connection and a support member having an annular flat flange portion for engaging the annular flat flange portion of the rupture disk and for supporting the transition connection thereof. The support member includes a cutting edge positioned interiorly of the transition connection and forming an opening in the support member so that when the concave-convex portion of the rupture disk reverses itself, the cutting edge severs the disk whereby a portion thereof passes through the opening in the support member. A bar for catching the severed portion of the disk after it passes through the opening in the support member is attached to the support member.
    Type: Grant
    Filed: September 12, 1977
    Date of Patent: June 19, 1979
    Assignee: Black, Sivalls & Bryson, Inc.
    Inventors: John E. Witten, Loren E. Wood, Edward H. Short, III
  • Scored rupture disk manufacturing method
    Patent number: 4122595
    Abstract: The present invention relates to improved methods of manufacturing scored rupture disks whereby a coating of corrosion-resistant material is applied to the disks so that a score pattern is left unprotected thereon and the disks are contacted with a corrosive fluid for a period of time sufficient to corrode scores corresponding with the score pattern into the disks.
    Type: Grant
    Filed: August 12, 1977
    Date of Patent: October 31, 1978
    Assignee: Black, Sivalls & Bryson, Inc.
    Inventors: Loren E. Wood, John E. Witten, Edward H. Short, III