Patents by Inventor Alan S. Bloor

Alan S. Bloor 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).

  • Strata movement indicator
    Patent number: 5345685
    Abstract: A strata movement indicator includes at least two lengths of suspension wire respectively for remote and near anchors locatable in the same borehole. Each wire carries a cylinder provided with indicator markings, the cylinders being moveable with respect to one another and to a reference tube fixed in the mouth of the borehole. Relative movement of the cylinders with respect to one another and/or to the reference tube indicates the degree of strata movement.
    Type: Grant
    Filed: June 24, 1993
    Date of Patent: September 13, 1994
    Assignee: Coal Industry (Patents) Limited
    Inventor: Alan S. Bloor