Patents by Inventor Orville C. Haugen

Orville C. Haugen 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).

  • Pressure roll cleaning system
    Patent number: 4509225
    Abstract: A cleaning system for a pressure roll includes a doctor blade and a brush which is orbitally rotated by eccentric cams to propel accumulated material away from the junction of the blade and the roll and into a collection hopper.
    Type: Grant
    Filed: January 20, 1983
    Date of Patent: April 9, 1985
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Orville C. Haugen
  • Pressure rollers for toner fusing station
    Patent number: 4356764
    Abstract: A pressure roller and apparatus for pressure fixing imaging powder in an electrostatic duplicating machine, the apparatus comprising a pair of fixing rollers in pressure contact along a narrow band to define a nip. The fixing rollers are hollow cylindrical rollers with parallel longitudinal axes and are rotatably supported by pressure transfer rollers inside each fixing roller. The pressure transfer rollers in each fixing roller are rotatably supported by a shaft and housing. Pressure supplied by loading means at the ends of the shafts to pressure fix imaging powder to a substrate transported through the nip is distributed uniformly along the nip by the pressure transfer rollers without causing bending moments on the fixing rollers.
    Type: Grant
    Filed: May 4, 1981
    Date of Patent: November 2, 1982
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Orville C. Haugen