Patents by Inventor Lenwood Fox

Lenwood Fox 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).

  • Earth boring bit with eccentric seal groove
    Patent number: 4277110
    Abstract: A rolling cone cutter earth boring bit is provided with a sealing system that results in the seal being squeezed uniformly around the seal circumference during drilling. A seal groove is machined in the bearing pin. The seal groove is machined about an axis that is offset from the central axis of the bearing pin in the direction of the unloaded side of the bearing pin. When the bit is drilling and the bearing pin is loaded the seal will run on a diameter concentric with the diameter of the rolling cutter and will see uniform squeeze around its circumference.
    Type: Grant
    Filed: September 24, 1979
    Date of Patent: July 7, 1981
    Assignee: Dresser Industries, Inc.
    Inventor: Lenwood Fox