Patents by Inventor Roger C. H. Sidey

Roger C. H. Sidey 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).

  • Non-contacting gauge for surfaces
    Patent number: 4986111
    Abstract: A non-contacting gauge for measuring small variations in the surfaces of objects comprises:(a) a chamber separated into two sub-chambers by a vibrating diaphragm,(b) a nozzle for each sub-chamber,(c) a reference surface adjacent to one of the nozzles, and,(d) a frame holding the chamber and reference surface moveable relative to the surface to be gauged and adapted to bring the other nozzle into the vicinity of the surface.The gauge is a versatile instrument which, while particularly suitable for measuring changes in the dimensions of geological core samples to determine residual strains, is also suitable for a range of measurement problems.
    Type: Grant
    Filed: August 10, 1989
    Date of Patent: January 22, 1991
    Assignee: The British Petroleum Company p.l.c.
    Inventor: Roger C. H. Sidey
  • Apparatus and method for cyclic simple shear testing of soil samples
    Patent number: 4149407
    Abstract: Method and apparatus for testing soil samples in which two similar samples of soil to be cyclic simple shear tested are positioned on opposite sides of a loading plate and subjected to a load normal to the plate. Simultaneously, the plate is moved transversely to apply a dynamic load to the samples. Soil response is studied by monitoring both loads and the transverse movement of the plate.
    Type: Grant
    Filed: January 30, 1978
    Date of Patent: April 17, 1979
    Assignee: Dames & Moore
    Inventors: James A. Strom, Roger C. H. Sidey