Patents by Inventor Charles M. Ashman

Charles M. Ashman 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).

  • Radiation reducing manway doors
    Patent number: 4932553
    Abstract: A radiation reducing door assembly comprises a mounting bracket having hinge means affixed thereto, said hinge means defining different axes of rotation for doors of at least two types, the doors being sized and shaped to overlie at least a portion of the opening with which the assembly is associated. The door assembly also includes means for rotatably coupling the removable doors to the hinge means whereby the mounted door is supported from said bracket and may be pivoted between open and closed positions.
    Type: Grant
    Filed: March 31, 1988
    Date of Patent: June 12, 1990
    Assignee: Combustion Engineering, Inc.
    Inventors: John E. Reich, Jr., Roland M. Witt, Jr., David L. Crick, Charles M. Ashman
  • Radiation shielding door assembly
    Patent number: 4801423
    Abstract: A radiation-reducing door assembly which may be configured as either an entry port or a ventilation port. The door assembly includes a split ring flange-type mounting bracket which can be quickly and easily installed on a manway flange regardless of the state of the manway cover mounting studs. A pair of radiation shielding doors or a ventilation port door may be quickly and easily coupled to the split ring mounting bracket.
    Type: Grant
    Filed: November 20, 1987
    Date of Patent: January 31, 1989
    Assignee: Combustion Engineering, Inc.
    Inventors: Douglas H. Warren, John C. Matthews, Jay M. Baldwin, Charles M. Ashman, James W. Finlayson
  • Control rod testing apparatus
    Patent number: 4670211
    Abstract: A control rod testing apparatus with a testing subassembly (30) floatingly secured in a guide structure (20, 48, 50). Two centering means (64, 76) center the subassembly (30) around the rod being tested. Pancake coils (72) sense the proximity of sensing fingers (82) which side against the periphery of the rod being tested for the purpose of determining the geometry of the rod.
    Type: Grant
    Filed: March 1, 1985
    Date of Patent: June 2, 1987
    Assignee: Combustion Engineering, Inc.
    Inventors: Robert R. Gaunt, Charles M. Ashman