Patents by Inventor Louis H. Avard

Louis H. Avard 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).

  • Bellows seal with vibration damper
    Patent number: 4890851
    Abstract: A bellows-type mechanical seal construction having a rotating carbide face ring provided with a vibration damper mounted thereon. The vibration damper comprises a carbon ring which is fixedly mounted within the carbide face ring, as by a press fit. The carbon vibration dampener ring is of substantial axial extent, and provides a close clearance with a shaft to effectively dampen vibrations of the rotating seal parts.
    Type: Grant
    Filed: January 19, 1989
    Date of Patent: January 2, 1990
    Assignee: Durametallic Corporation
    Inventors: Louis H. Avard, Harry L. Mason