Patents Assigned to Smith International Corporation, Inc.
  • Spring-loaded bearings for in-hole motors
    Patent number: 3982797
    Abstract: This invention relates to spring-loaded thrust bearings for shafts subject to a plurality of levels of thrust loads and in its preferred embodiment is applied to in-hole motors. The invention employs a plurality of spring systems, whereby the thrust load on one set of springs is limited to one level of thrust and another of the spring systems under said load may be loaded to a higher level.
    Type: Grant
    Filed: July 11, 1975
    Date of Patent: September 28, 1976
    Assignee: Smith International Corporation, Inc.
    Inventors: John E. Tschirky, Bela A. Geczy
  • Floating flow restrictors for fluid motors
    Patent number: 3982859
    Abstract: This invention relates to flow restrictors in fluid motors.
    Type: Grant
    Filed: July 11, 1975
    Date of Patent: September 28, 1976
    Assignee: Smith International Corporation, Inc.
    Inventors: John E. Tschirky, Bela A. Geczy
  • Segmented stator for progressive cavity transducer
    Patent number: 3982858
    Abstract: This invention relates to progressing cavity fluid motors with multiple segmented stator elements connected in series to provide a fluid passageway from the input of the initial stator of the series to the output of the terminal stator of the series; the rotor elements in each stator are connected together for simultaneous rotation.
    Type: Grant
    Filed: July 11, 1975
    Date of Patent: September 28, 1976
    Assignee: Smith International Corporation, Inc.
    Inventor: John E. Tschirky