Patents by Inventor Samuel C. Johnson

Samuel C. Johnson 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).

  • Air seal between relatively moveable ducts
    Patent number: 4627625
    Abstract: A seal for interconnecting a vibrating plenum chamber to a stationary air duct for air flow communication therebetween. The chamber defines an inlet duct bounded by an upstream facing annular sealing surface. A baffle member is attached to, and encircles, the adjacent end of the stationary air duct. The baffle member comprises a pair of outwardly converging annular sides sealingly joined at their outer radius, with the innermost annular portion of one side attached to the stationary air duct and the innermost annular portion of the other side attached to a sealing member defining an annular surface slidingly engaging the upstream facing annular sealing surface on the inlet duct.
    Type: Grant
    Filed: April 2, 1981
    Date of Patent: December 9, 1986
    Assignee: Dresser Industries, Inc.
    Inventors: Samuel C. Johnson, James C. Elliott