Patents by Inventor William E. Betzner

William E. Betzner 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).

  • Process for making expansion joint material
    Patent number: 6068804
    Abstract: A process of producing an asphalt-impregnated fiberboard comprises the steps of forming an aqueous slurry of a fibrous material and asphalt, the solids content of the slurry being less than about 8 weight percent, mixing the slurry to uniformly distribute its components, dewatering the slurry to form a wet mat, pressing the wet mat to consolidate it, and drying the consolidated wet mat. Fiberboards made by the process can be employed as durable resilient expansion joints between various types of structural members.
    Type: Grant
    Filed: July 2, 1998
    Date of Patent: May 30, 2000
    Assignee: Celotex Corporation
    Inventors: William E. Betzner, Fred L. Migliorini
  • Method for producing an embossed gypsum panel
    Patent number: 4842786
    Abstract: A method of making an embossed gypsum panel including an embossing device mounted on a moveable support and positioning the device so that it is located at the point of "set" of the gypsum slurry from which the board is made.
    Type: Grant
    Filed: October 3, 1988
    Date of Patent: June 27, 1989
    Assignee: The Celotex Corporation
    Inventor: William E. Betzner
  • Apparatus for making an embossed gypsum panel
    Patent number: 4781558
    Abstract: An apparatus for making an embossed gypsum panel on a conveyor including an embossing device mounted on a movable device such that the embossing device can be moved to the optimum location for embossing.
    Type: Grant
    Filed: September 26, 1986
    Date of Patent: November 1, 1988
    Assignee: The Celotex Corporation
    Inventor: William E. Betzner
  • Apparatus for blow line addition of thermosettable binder in fiberboard manufacture including a cooling nozzle
    Patent number: 4533436
    Abstract: A method and apparatus for producing a synthetic board from cellulosic and/or lignocellulosic materials wherein a thermosettable binder, preferably a polyisocyanate binder, is applied through a cooled nozzle to the hot and wet fibrous material in the blow line out of the refiner of a board forming process. Polyphenylpolyisocyanates, such as a mixture of diphenylmethane-4,4'-diisocyanate and polymethylene polyphenyl polyisocyanates, are a particularly suitable binder.
    Type: Grant
    Filed: August 15, 1983
    Date of Patent: August 6, 1985
    Assignee: The Celotex Corporation
    Inventors: William E. Betzner, Richard K. Holtman
  • Blow line addition of isocyanate binder in fiberboard manufacture
    Patent number: 4407771
    Abstract: A method for producing a synthetic board from cellulosic and/or lignocellulosic materials wherein a polyisocyanate binder is applied to the hot and wet fibrous material in the blow line out of the refiner of the board forming process. Polyphenylpolyisocyanates, such as a mixture of diphenylmethane-4,4'-diisocyanate and polymethylene polyphenyl polyisocyanates, are a particularly suitable binder.
    Type: Grant
    Filed: April 26, 1982
    Date of Patent: October 4, 1983
    Assignee: The Celotex Corporation
    Inventors: William E. Betzner, Richard K. Holtman, Allen R. Hill
  • Blow line addition of thermosettable binder in fiberboard manufacture utilizing cooled nozzle
    Patent number: 4402896
    Abstract: A method and apparatus for producing a synthetic board from cellulosic and/or lignocellulosic materials wherein a thermosettable binder, preferably a polyisocyanate binder, is applied through a cooled nozzle to the hot and wet fibrous material in the blow line out of the refiner of a board forming process. Polyphenylpolyisocyanates, such as a mixture of diphenylmethane-4,4'-diisocyanate and polymethylene polyphenyl polyisocyanates, are a particularly suitable binder.
    Type: Grant
    Filed: April 26, 1982
    Date of Patent: September 6, 1983
    Assignee: The Celotex Corporation
    Inventors: William E. Betzner, Richard K. Holtman