Patents by Inventor Christopher A. Lindenberger

Christopher A. Lindenberger 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: 4993288
    Abstract: A power driven socket holding ratchet wrench which has a socket made so that it has a central opening that may be used for receiving a long stud or member, which passes through the socket. The wrench acts much like a box end wrench. The wrench is made so that it can be relatively compact in axial height, that is, along the length of the sprocket and the frame is small in diameter relative to the socket size to permit it to fit into tight places. The power drive is capable of being positioned at an angle relative to the wrench head, and the wrench includes a unique ratcheting and quick release mechanism that facilitates the operation of the unit.
    Type: Grant
    Filed: January 10, 1989
    Date of Patent: February 19, 1991
    Assignee: Circle A Products, Inc.
    Inventors: Marvin L. Anderson, Gerald O. Irvine, Christopher A. Lindenberger