Patents by Inventor William P. Freund

William P. Freund 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).

  • Furnace seal
    Patent number: 5006064
    Abstract: A gas seal for a bell-type annealing furnace is described. A ring supported by the furnace cover and a resilient pad supported by the base mate to form a gas seal when the cover is rested on the base. A cover-supported cooling jacket and a base-supported cooling jacket cooperate to enclose the seal when the cover is rested on the base. Load bearing structure is provided independent of the seal elements to avoid subjecting the seal elements to the weight of the furnace cover.
    Type: Grant
    Filed: December 28, 1989
    Date of Patent: April 9, 1991
    Assignee: Alloy Engineering Company
    Inventor: William P. Freund
  • Bell-type coil annealing furnace inner cover
    Patent number: 4278242
    Abstract: An inner cover for a bell-type annealing or thermal processing furnace having a thin walled cylindrical body formed from textured heat resistant stainless steel and/or nickle chrome alloy closed at its upper end and having one or more outwardly flared conical sections at its other or lower end and terminating in a radial flange surrounded by a steel ring connected thereto.
    Type: Grant
    Filed: February 11, 1980
    Date of Patent: July 14, 1981
    Assignee: The Alloy Engineering Company
    Inventors: William P. Freund, Stephen R. Hulvey