Patents by Inventor Stephen R. Hulvey

Stephen R. Hulvey 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).

  • 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