Patents by Inventor Robert E. Croom, Jr.

Robert E. Croom, Jr. 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).

  • Oil well service tool
    Patent number: 4413516
    Abstract: Apparatus for reducing landing shock for instruments run into earth boreholes through drill string bores and to maintain azimuthal orientation being protected with enclosing structure. An instrument package has a depending spear point for engaging a baffle in the drill string. The spear point encloses a spring and fluid damped shock absorber. The instrument package further includes a second internal fluid damped shock absorber and a spring type rotary shock absorber for the measuring instrument.
    Type: Grant
    Filed: March 19, 1982
    Date of Patent: November 8, 1983
    Assignee: Oil-Well Drilling Control, Inc.
    Inventors: Robert E. Croom, Jr., John D. Jeter