Patents by Inventor Colin G. M. Merriman

Colin G. M. Merriman 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 supports
    Patent number: 5423638
    Abstract: A mine roof support having means for monitoring the angles made by the canopy 11 and the base 10 with respect to a datum. The angular information may be gathered in a number of different ways and the information used to control subsequent movements of the support.
    Type: Grant
    Filed: March 9, 1994
    Date of Patent: June 13, 1995
    Assignee: Gullick Dobson Limited
    Inventor: Colin G. M. Merriman
  • Apparatus for transmitting data
    Patent number: 5029943
    Abstract: Apparatus for transmitting data relating to a mining machine in a longwall mining operation, comprising a data collection device mountable on a mining machine for collecting data relating to the machine, a data transmission device also mountable on the mining machine for transmitting the data in the form of a remote signal, and a plurality of receiving devices each mountable on one of a plurality of mine roof supports past which the machine is arranged to travel. The apparatus also includes a data conveying device for conveying the data away from the mine roof supports.
    Type: Grant
    Filed: May 17, 1990
    Date of Patent: July 9, 1991
    Assignee: Gullick Dobson Limited
    Inventor: Colin G. M. Merriman