Patents by Inventor Francis A. Penning

Francis A. Penning 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).

  • Device for measuring guide alignment for mine shafts and the like
    Patent number: 4535541
    Abstract: A guide alignment measuring device for mine skips, cages, elevators and other conveyance systems. The device measures misalignment of one or more guides used in vertical shafts or incline shafts in various types of mining operations, elevator shafts and similar operations where materials and personnel are raised and lowered.
    Type: Grant
    Filed: March 26, 1984
    Date of Patent: August 20, 1985
    Assignee: Colorado School of Mines
    Inventor: Francis A. Penning