Patents by Inventor Lawrence W. Matson

Lawrence W. Matson 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: 4794995
    Abstract: A nozzle for a drill bit comprises a nozzle body and a ring for securing the nozzle body in a threaded cavity of the drill bit. The nozzle body includes a fluid passage of the orientable type. The ring comprises an externally threaded sleeve and a cap bonded to a front end thereof. The cap and nozzle body are formed of harder materials than the threaded sleeve. The cap contains dove-tail shaped slots for receiving complementarily shaped projections on a tool to enable the ring to be rotated relative to the nozzle body. By threading the ring into the cavity, the nozzle body can be secured in the cavity with its fluid passage oriented in the desired final orientation.
    Type: Grant
    Filed: October 23, 1987
    Date of Patent: January 3, 1989
    Assignee: Diamant Boart-Statabit (USA) Inc.
    Inventors: Lawrence W. Matson, Stephen G. Southland, Roy T. Jackson
  • Patent number: 4658918
    Abstract: A threaded nozzle is adapted to be screwed into and screwed out of a threaded opening in a drill bit. The nozzle includes a front face having first and second contact surfaces which are adapted to be engaged by a manually actuable tool for screwing-in and screwing-out the nozzle. The first contact surface is inclined toward the direction of rotation in which the member is screwed-in, so that in response to the application of a force to the first contact surface for screwing-in the nozzle, a reaction force is applied against the tool for pushing the tool off the first contact surface when the nozzle has been screwed-in a predetermined extent.
    Type: Grant
    Filed: July 25, 1985
    Date of Patent: April 21, 1987
    Assignee: Strata Bit Corporation
    Inventor: Lawrence W. Matson
  • Patent number: 4116451
    Abstract: A seal is disclosed for use in high ambient temperatures. The seal includes a plurality of V-shaped seal rings having opposite convex and concave sides that are stacked or rested in the annular space provided between a shaft and a housing through which the shaft extends. Each seal ring includes an annular body of self-lubricating, low-friction graphite, which is a very good conductor of heat. The outer and inner edges of the annular body of graphite are moved into sealing engagement with the shaft and housing when the annular body is subjected to a differential pressure. A ring of spring metal that is V-shaped in cross-section is embedded in the annular body of graphite to support the annular body of low-friction material and hold it in position to form a seal between the shaft and the housing against the differential pressure exerted across the seal.
    Type: Grant
    Filed: June 16, 1977
    Date of Patent: September 26, 1978
    Assignee: Maurer Engineering, Inc.
    Inventors: Jeddy D. Nixon, Lawrence W. Matson, Jr.