Patents by Inventor Clarence W. Smothers

Clarence W. Smothers 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).

  • Power drill having drill chuck tightener
    Patent number: 4915555
    Abstract: A reversible power drill having a drill chuck tightener is disclosed. The drill has a body and chuck reversibly rotatable with respect to the body. The tightener comprises a lever or a contact post attached to the body of the drill and an impact button attached to the back portion of the chuck of the drill wherein the lever or post impacts the impact button as the chuck rotates, thereby tightening or loosening the chuck depending upon the direction of rotation of the drill. The lever or post is biased by a spring into a position which disengages it from the impact button when not in use.
    Type: Grant
    Filed: June 7, 1989
    Date of Patent: April 10, 1990
    Inventor: Clarence W. Smothers