Patents by Inventor James A. Strom

James A. Strom 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).

  • Insitu soil shear measurement apparatus
    Patent number: 4649741
    Abstract: A testing apparatus for measuring soil shear strength which includes a torque motor connected to a torque shaft, torque cell and vane which extend beneath the soil surface. The torque cell is located between the shaft and the vane; and measures soil shear strength. It includes a torque transmission member on which an electrical transducer is mounted; and a housing which surrounds the transmission member and defines an annular cavity which protectively surrounds the transducer.
    Type: Grant
    Filed: August 22, 1985
    Date of Patent: March 17, 1987
    Assignee: Geomatic
    Inventor: James A. Strom
  • 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