Patents Assigned to Robert M. Magnuson
  • Automatic calibration control for color grading apparatus
    Patent number: 4259020
    Abstract: Apparatus for color grading of products such as fruits, vegetables, et cetera, employing a light source for illuminating the product and means for detecting and comparing the reflectance to measure certain product properties. For calibration, a target of known color is moved in front of the light source and the resulting signal is compared with a reference signal to generate a modifying signal. For automatic calibration of the apparatus this modifying signal is stored and thereafter used to adjust all subsequent readout signals.
    Type: Grant
    Filed: October 30, 1978
    Date of Patent: March 31, 1981
    Assignees: Genevieve I. Hanscom, Genevieve Hanscom, Robert M. Magnuson, Lois J. Thomson
    Inventor: Raymond E. Babb
  • Shuffle feeder interlocking flights
    Patent number: 4199055
    Abstract: A shuffle feed structure comprising first and second sets of shuffle feed mbers supported on their respective frames for reciprocating movement so as to advance articles lying thereon in single file order. The feed members are constructed with adjacent surfaces including offset portions so as to prevent articles being advanced from aligning with and falling through the space between the individual flights.
    Type: Grant
    Filed: April 3, 1978
    Date of Patent: April 22, 1980
    Assignees: Genevieve I. Hanscom, Robert M. Magnuson, Lois J. Thomson, trustees of the estate of Roy M. Magnuson
    Inventor: Chester Green
  • Color grading apparatus utilizing infrared light source
    Patent number: 4057352
    Abstract: Apparatus for color grading of products, such as fruits, vegetables, et cetera, employing light sources for illuminating the products in the infrared and green or lower wavelengths, and means for detecting and comparing the reflectance in the two light regions to measure certain properties of the product. The light source used for the infrared radiation is an improved gas discharge lamp utilizing argon gas.
    Type: Grant
    Filed: May 13, 1976
    Date of Patent: November 8, 1977
    Assignees: Genevieve I. Hanscom, Robert M. Magnuson, Lois J. Thomson
    Inventor: Raymond E. Babb