Patents by Inventor Gifford L. Hitz

Gifford L. Hitz 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: 5265917
    Abstract: A sealed connection for two cylindrical members defining an axis, and in combination with the members comprising at least two semi-cylindrical connector sections sized to fit about the members, the sections forming multiple projections that extend radially inwardly and generally annularly about the axis, the projections spaced apart in an axial direction on each of the sections in meshing interengagement with corresponding projections on the members that project radially outwardly, with the sections bridging the joint between the members, whereby the members are held against relative axial separation, the projections in the sections having annular extents about the axis; generally annular retaining ring structure extending annularly about the sections and having wedging engagement therewith to block outward movement of the sections that would tend to relieve such meshing interengagement; there being sealing structure at the joint between the members and compressed by the members when the sections are fully as
    Type: Grant
    Filed: December 28, 1992
    Date of Patent: November 30, 1993
    Inventor: Gifford L. Hitz
  • Patent number: 4193617
    Abstract: A sealed connection for two cylindrical members includes semi-cylindrical connector sections sized to fit about the members, to bridge the joint between the members, and to be retained in position. An over-center flexing seal is also provided between two such members, as for example pipe members.
    Type: Grant
    Filed: July 24, 1978
    Date of Patent: March 18, 1980
    Inventor: Gifford L. Hitz
  • Patent number: 4159132
    Abstract: A sealed connection for two cylindrical members includes semi-cylindrical connector sections sized to fit about the members, to bridge the joint between the members, and to be retained in position. An over-center flexing seal is also provided between two such members, as for example pipe members.
    Type: Grant
    Filed: April 3, 1978
    Date of Patent: June 26, 1979
    Inventor: Gifford L. Hitz