Patents by Inventor Howard G. Thompson, Jr.

Howard G. Thompson, 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).

  • Overspeed protective gear box for a well pump
    Patent number: 4797075
    Abstract: A progressing cavity well pump has an overspeed brake to protect the gear box during reverse rotation. A power source rotates an input shaft of the gear box, which through a right angle drive, drives a string of rods extending into the well to the progressing cavity pump. A centrifugal brake is mounted to the input shaft. If the pump locks up, the power source will impart energy to the rods by twisting them until the power source reaches its limit. When the rods start to unwind, the centrifugal brake will engage to dissipate energy and slow the speed of the reverse rotation.
    Type: Grant
    Filed: April 9, 1987
    Date of Patent: January 10, 1989
    Assignee: Hughes Tool Company
    Inventors: Wallace L. Edwards, Joel F. Jones, Howard G. Thompson, Jr.