Patents by Inventor Burl O. Norville

Burl O. Norville 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).

  • Patent number: 5404773
    Abstract: A cam-action ratchet-type wrench has a handle with a hand grip portion at one end and a generally cylindrical head portion at the opposite end. A cylindrical torque transmitting member rotatably disposed within the head portion has an outwardly extending portion for connection to a socket for rotating a workpiece. A pair of cam wedge members movably disposed in laterally opposed spaced relation within rectangular slots in the head portion have inwardly facing curved surfaces. A direction selection disk rotatably mounted in the head portion above the torque transmitting member has a pin disposed between the cam wedge members. A direction selection lever on the handle rotates the direction selection disk to selectively engage the pin with one of the pair of cam wedge members to move the curved surface of the engaged cam wedge member into and out of engagement with the cylindrical surface of the torque transmitting member.
    Type: Grant
    Filed: October 27, 1993
    Date of Patent: April 11, 1995
    Inventor: Burl O. Norville