Patents by Inventor Gustave Hoelpes

Gustave Hoelpes 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).

  • Device for injecting preheated air into a shaft furnace
    Patent number: 4987838
    Abstract: The device is composed of several separate elements consisting of at least one central tubular element connected, on one side, by means of a first ball-and-socket joint and a first compensator to a first connector supplying preheated air and on the opposite side, by means of a second ball-and-socket joint and a second compensator to a second connector. In order to reduce the length of the device, the second joint is oriented in the opposite direction to the said first joint, its center of curvature being located on the axis of the said second connector on the inside of the latter.
    Type: Grant
    Filed: July 14, 1989
    Date of Patent: January 29, 1991
    Assignee: Paul Wurth S.A.
    Inventors: Pierre Mailliet, Emile Lonardi, Georges Wahl, Gustave Hoelpes