Patents by Inventor William N. Cherniwchan

William N. Cherniwchan 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).

  • Floating roof metallic shoe seal spring hanger system
    Patent number: 5529200
    Abstract: The present invention relates to a ring seal for between a floating roof and a side wall in a liquid and vapor storage tank. The ring seal includes a number of overlapping shoe plates hung from the floating roof by pantagraph hanger assemblies. The pantagraph hanger assemblies urge the shoe plates against the side wall and a gap seal prevents tank vapor loss along a lap joint between adjoining shoe plates.
    Type: Grant
    Filed: December 27, 1994
    Date of Patent: June 25, 1996
    Assignee: Chicago Bridge & Iron Technical Services Company
    Inventors: James H. Ford, Robert G. Kruger, William N. Cherniwchan