Patents by Inventor Darrell Lee Durham

Darrell Lee Durham 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).

  • Retaining assembly for roller bearings
    Patent number: 5746517
    Abstract: A ring assembly for retaining a roller bearing and shaft. A split ring fits in a groove in the shaft and is surrounded by a lock ring to secure it in the groove. The split ring has a beveled surface which the lock ring acts against to force the split ring into the groove as the lock ring is pressed onto the split ring. An inclined surface on the split ring interacts with a ramp surface bounding the groove to press the split ring against the bearing as it moves into the groove. This applies a preload thrust to the bearing.
    Type: Grant
    Filed: December 30, 1996
    Date of Patent: May 5, 1998
    Assignee: Eskridge, Inc.
    Inventors: Darrell Lee Durham, Mark Anthony Johnson, David Wayne O'Reilly