Patents by Inventor John A. Charnock

John A. Charnock 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).

  • Electrode joints
    Patent number: 4167643
    Abstract: In joining together electrode segments through nipples for use in electric furnaces, certain designated threads adjacent the interface of the segments are inactivated so that only those threads tending to self-tighten with increasing temperature are active. In this way, any tendency for the joint to loosen upon heating is avoided and all the stress is borne by self-tightening threads.
    Type: Grant
    Filed: April 10, 1978
    Date of Patent: September 11, 1979
    Assignee: ERCO Industries Limited
    Inventor: John A. Charnock