Patents by Inventor Kenneth W. Key

Kenneth W. Key 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).

  • Pipe joint gland reinforcing structure
    Patent number: 4874192
    Abstract: An improvement to a pipe joint gland utilizes a pair of radially extending ribs formed at each boss separated at about 90.degree. from each other and a second pair of ribs extending from the bosses along the circumference of the pipe joint gland. Each rib slopes downwardly from the top of the boss to the surface of the gland. The ribs are arranged in a non-parallel, non-intersecting fashion which provides improved radial and annular rigidity to the gland.
    Type: Grant
    Filed: June 15, 1988
    Date of Patent: October 17, 1989
    Inventor: Kenneth W. Key