Patents by Inventor Isac M. Sheinkop

Isac M. Sheinkop 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 electrically heating molten glass
    Patent number: 4741753
    Abstract: A method and apparatus for continuously melting and refining molten glass are disclosed which comprises the steps of applying a preponderance of heat to a molten glass mass by Joule effect heating and pulsating a portion of the heat applied to the molten glass mass such that the temperature of the surface molten glass is increased and the temperature of the molten glass being withdrawn is reduced and the total energy supplied to the furnace is reduced. An electric circuit means comprising at least two interconnected electrodes is pulsated on and off at predetermined time intervals in order to establish the desired temperature profile within the molten glass mass.
    Type: Grant
    Filed: March 12, 1987
    Date of Patent: May 3, 1988
    Assignee: Owens-Corning Fiberglas Corporation
    Inventors: Isac M. Sheinkop, Manoj K. Choudhary
  • Apparatus for thermally conditioning heat softenable material
    Patent number: 4544392
    Abstract: The present invention is an auxiliary heated bushing block for a fiber forming furnace. The bushing block fits below an opening in the bottom of a forehearth of a glass melting furnace. A non-circular opening through the bushing block allows molten material to flow into a fiber forming bushing. Electrical resistance heater elements protrude through the ends of the bushing block into the non-circular opening into contact with the molten material. Each electrical resistance heater element has associated with it a separate adjustable power supply to provide individually variable power to each electrical resistance heater element. By varying the power settings of each power supply, the molten material as it flows through the non-circular opening of the bushing block can be selectively thermally conditioned.
    Type: Grant
    Filed: June 29, 1984
    Date of Patent: October 1, 1985
    Assignee: Owens-Corning Fiberglass Corporation
    Inventor: Isac M. Sheinkop
  • Method for controlling a glass melting furnace
    Patent number: 4405351
    Abstract: A method for controlling a glass melting furnace comprises measuring the temperature T of the glass in the furnace, measuring the heat being supplied to the glass in the furnace, calculating the entropy E according to the equationE=(Q/T)comparing E with a predetermined entropy E.sub.O, changing Q to a new value of heat Q' responsive to (E-E.sub.O), and supplying heat Q' to the furnace.
    Type: Grant
    Filed: June 29, 1981
    Date of Patent: September 20, 1983
    Assignee: Owens-Corning Fiberglas Corporation
    Inventor: Isac M. Sheinkop
  • Throat upwell baffle
    Patent number: 4388721
    Abstract: A chimney baffle is positioned against a vertical refractory wall extending from a channel through which hot glass is flowing to reduce deterioration of the refractory of the vertical wall.
    Type: Grant
    Filed: August 3, 1981
    Date of Patent: June 14, 1983
    Assignee: Owens-Corning Fiberglas Corporation
    Inventors: Herbert L. Hall, Jr., Isac M. Sheinkop