Patents by Inventor James B. Cummins

James B. Cummins 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).

  • Method and apparatus for calibrating Reseau grids
    Patent number: 3982837
    Abstract: Apparatus and method for calibrating the points in a large Reseau grid with extreme accuracy. The method includes superimposing a smaller calibrated master grid on the large grid, comparing the location of the point on the large grid with the location of the corresponding point on the master grid, generating the comparison data, translating the master grid to another location, comparing the points on the two grids, and repeating the translating and comparing steps until the entire large grid is calibrated. A laser interferometer is used to determine the amount of translation of the master grid with the requisite accuracy.
    Type: Grant
    Filed: January 24, 1975
    Date of Patent: September 28, 1976
    Assignee: Controlled Environment Systems, Inc.
    Inventor: James B. Cummins