Patents by Inventor Keith R. Hazelrigg

Keith R. Hazelrigg 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: 4460156
    Abstract: The invention pertains to apparatus for making up fluid connections in association with an underwater wellhead structure. The apparatus comprises a pair of matable bodies including a female body having a generally laterally inwardly facing wall defining a receptacle and a male body adapted for insertion into and removal from the receptacle by movement in a generally longitudinal directional mode. The male body has a generally laterally outwardly facing wall for disposition adjacent the wall of the female body when the male body is inserted therein. Each of the bodies has a respective fluid passageway, and each of these passageways has a port opening through the laterally facing wall of the respective one of the bodies, the two ports being generally in register when the bodies are matingly engaged.
    Type: Grant
    Filed: May 1, 1981
    Date of Patent: July 17, 1984
    Assignee: NL Industries, Inc.
    Inventors: Keith R. Hazelrigg, Edward W. Locheed, Jr.
  • Patent number: 4426104
    Abstract: Apparatus for making up underwater fluid connections comprising first and second connector assemblies each comprising at least one conduit connector member, the connector members of the two assemblies being matably connectable by movement of the assemblies toward each other. A pair of levers carried by the first assembly are pivotable about a first axis transverse to the direction of movement in connecting the two assemblies, the two levers further being generally parallel and spaced apart along said first axis. The levers have force transmitting arms engageable with the second assembly to urge it toward the first assembly, and are interconnected for joint pivotal movement. The levers have a terminal position engaged with the second assembly when the connector members are connected, and lock bars carried by the first assembly retain the levers in the terminal position.
    Type: Grant
    Filed: October 21, 1981
    Date of Patent: January 17, 1984
    Assignee: NL Industries, Inc.
    Inventor: Keith R. Hazelrigg
  • Patent number: D351336
    Type: Grant
    Filed: October 14, 1991
    Date of Patent: October 11, 1994
    Assignee: FSSL, Inc.
    Inventors: James L. Dean, Keith R. Hazelrigg