Patents by Inventor Phillip E. Frair

Phillip E. Frair 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: 5100183
    Abstract: A pipe coupling for the joining of plain end pipe that includes an annular gasket and a compressible lock ring at each end of the coupling between a tubular middle ring and an annular follower. Bolts extending between the opposite followers are effective when tightened to compress both the gasket and lock ring into their operative relation for sealing and gripping a coupled pipe end, respectively. The follower is comprised of a unitary structure integrally cast to define an internal annular protuberance that juxtaposedly confronts the radially rearward surface of the gasket. Also defined by the follower inward of the protuberance is a central opening at least partially tapered frusto-conically and in which the lock ring is initially supported controllably spaced from the gasket. Tightening of the bolts enables gasket sealing pressure to be achieved about the pipe end sequentially before a completed restraing grip on the pipe end is attained by the lock ring.
    Type: Grant
    Filed: May 10, 1991
    Date of Patent: March 31, 1992
    Assignee: Dresser Industries, Inc.
    Inventors: Robert P. Montesi, Gerald L. Anderson, Phillip E. Frair
  • Patent number: 4569542
    Abstract: A pipe coupling for the joining of plain end pipe that includes an annular gasket and a compressible lock ring at each end of the coupling between a tubular middle ring and an annular follower. Bolts extending between the opposite followers are effective when tightened to compress both the gasket and lock ring into their operative relation for sealing and gripping a coupled pipe end, respectively. An annular recess contained in the backface of the gasket affords a clearance of controlled dimension initially about the juxtaposed portion of the lock ring. The clearance functions when the bolts are tightened to enable gasket sealing pressure to be achieved about the pipe sequentially before an effective grip on the pipe is attained by the lock ring.
    Type: Grant
    Filed: September 26, 1983
    Date of Patent: February 11, 1986
    Assignee: Dresser Industries, Inc.
    Inventors: Gerald L. Anderson, Phillip E. Frair