Patents by Inventor Fred Small

Fred Small 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).

  • Mine roof support control
    Patent number: 4134270
    Abstract: A mine roof support control monitoring system in which at least some of a row of self advancing mine-roof supports at a mine face each include means for providing data relating to successive advances of that support. This data is accumulated by other means of the system and stored to give readily available indicationsof differences of actual support advances. The system preferably further includes means for pre-energizing the advance mechanisms of such supports to eliminate data relating to slack or tolerance.
    Type: Grant
    Filed: December 21, 1976
    Date of Patent: January 16, 1979
    Assignee: Gullick Dobson Limited
    Inventors: Fred Small, Kenneth Darbyshire