Patents by Inventor Terence J. Gapper

Terence J. Gapper 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).

  • Mining machines
    Patent number: 4130319
    Abstract: A longwall mining machine is provided with a roller resiliently urged into engagement with a track extending along the longwall face. Sensor means are provided to sense rotation of the roller and derive a signal indicative of the machine's position along the longwall face.
    Type: Grant
    Filed: March 4, 1976
    Date of Patent: December 19, 1978
    Assignee: Coal Industry (Patents) Limited
    Inventor: Terence J. Gapper