Patents by Inventor David E. Kifer

David E. Kifer 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: 4903997
    Abstract: A roof flashing and method of making same in which both the collar and base member of the flashing are made of elastomeric material. The base member is molded first and has an opening therein surrounded by a stepped flange provided with a series of circumferential slots therein. The collar is molded onto the base member during a subsequent molding operation in which the material of the collar is injected through the slots and completely around the top, bottom and inner side edge of the flange to form a series of closed loops thus providing a positive mechanical lock between the collar and base member. Also, the heat of the elastomeric material of the collar during the second stage molding process causes some melting of the elastomeric material of the base member whereby the collar and base are also fused together.
    Type: Grant
    Filed: March 21, 1989
    Date of Patent: February 27, 1990
    Assignee: Oatey Co.
    Inventor: David E. Kifer
  • Patent number: 4526407
    Abstract: A roof flashing and method of making same in which both the collar and base member of the flashing are made of elastomeric material. The base member is molded first and has an opening therein surrounded by a stepped flange provided with a series of circumferential slots therein. The collar is molded onto the base member during a subsequent molding operation in which the material of the collar is injected through the slots and completely around the top, bottom and inner side edge of the flange to form a series of closed loops thus providing a positive mechanical lock between the collar and base member. Also, the heat of the elastomeric material of the collar during the second stage molding process causes some melting of the elastomeric material of the base member whereby the collar and base are also fused together.
    Type: Grant
    Filed: April 27, 1981
    Date of Patent: July 2, 1985
    Assignee: Oatey Co.
    Inventor: David E. Kifer
  • Patent number: 4410004
    Abstract: A laundry outlet box comprises a box-like one-piece molded plastic housing having top, bottom and side walls circumscribing an axis of the box and a back wall and open front face normal to such axis. The bottom wall of the housing slopes downwardly toward the center to a drain opening and is provided at its underside with a tailpipe adaptor including coextensive radially spaced pipe-like extensions concentric with the drain opening, which extensions are adapted for selective coupling to drain pipes of different sizes. The housing is adapted to be recess mounted in a wall between vertical wall supports by interchangeable L-shape mounting brackets arranged in pairs on each side of the box with the laterally extending legs vertically spaced apart and adapted to have optionally secured therebetween electrical outlet boxes at one or both sides of the box.
    Type: Grant
    Filed: April 4, 1980
    Date of Patent: October 18, 1983
    Assignee: Oatey Co.
    Inventors: David E. Kifer, Robert H. McGuire