Patents by Inventor Richard D. Crouse

Richard D. Crouse 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).

  • Crossflow rotary cone rock bit with extended nozzles
    Patent number: 4687067
    Abstract: A three cone rock bit is disclosed having at least a pair of mini-extended nozzles extending from a dome portion of the bit. Two 120.degree. leg segments contain extended nozzles, a third 120.degree. segment is nozzleless. The mini-extended nozzles convert hydraulic pressure to kinetic fluid flow energy with a minimum of flow disturbance, thereby delivering a concentrated flow of fluid against the floor of the formation and across the cutting face of the bit, sweeping detritus past the nozzleless 120.degree. leg segment and up the borehole. A centerjet mini-extended nozzle may additionally be positioned in the rock bit dome to further enhance borehole penetration.
    Type: Grant
    Filed: May 1, 1986
    Date of Patent: August 18, 1987
    Assignee: Smith International, Inc.
    Inventors: Richard D. Smith, Michael S. Oliver, Richard D. Crouse, Weng-Kwen R. Chia