Patents by Inventor Joseph M. Casey

Joseph M. Casey 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).

  • Apparatus for the on-line measurement of the opacity of a paper sheet
    Patent number: 4224513
    Abstract: A method of on-line control of opacity of moving sheet material being produced by a paper making machine includes an opacity control loop where an opacity additive is controlled and a basis weight control loop where the stock input to a headbox is controlled. These two control loops are decoupled by means of an opacity to stock feed forward and a basis weight to titanium dioxide feed forward. In addition, the effect of moisture change is decoupled from opacity. The opacity of the moving sheet material is measured by a system which employs a visible source and detector on opposite sides of the sheet. A diffusing window is placed both between the sheet and the source as well as between the sheet and the detector.
    Type: Grant
    Filed: April 6, 1978
    Date of Patent: September 23, 1980
    Assignee: Measurex Corporation
    Inventors: Joseph M. Casey, Erik B. Dahlin
  • Method for the on-line control of the opacity of a paper sheet
    Patent number: 4098641
    Abstract: A method of on-line control of opacity of moving sheet material being produced by a paper making machine includes an opacity control loop where an opacity additive is controlled and a basis weight control loop where the stock input to a headbox is controlled. These two control loops are decoupled by means of an opacity to stock feed forward and a basis weight to titanium dioxide feed forward. In addition, the effect of moisture change is decoupled from opacity.
    Type: Grant
    Filed: September 25, 1974
    Date of Patent: July 4, 1978
    Assignee: Measurex Corporation
    Inventors: Joseph M. Casey, Erik B. Dahlin