Patents by Inventor Roy F. Butler

Roy F. Butler 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).

  • Drill actuating mechanism
    Patent number: 4301699
    Abstract: A link is pivotally connected at one end to the collar which is clampingly engaged with the quill of a machine tool. The other end of the link is pivotally connected to one end of a lever arm. At an intermediate point, the lever arm is engagable with a conventional sensitive drill adapter held in accordance with conventional practice by the machine tool. The drill adapter is reciprocally movable in response to movement of the lever arm.
    Type: Grant
    Filed: January 9, 1980
    Date of Patent: November 24, 1981
    Inventor: Roy F. Butler