Patents by Inventor Stephen Tonchen

Stephen Tonchen 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).

  • Preformed band for use in coupling tubular members
    Patent number: 4609213
    Abstract: An apparatus is disclosed for coupling of tubular members using a strip of metal which is preformed with an arcuate bend portion having a limited length in relation to the overall length of the strip and including two bend portions having radii so related to the radii of the tubular members as to obtain enhanced gripping and enhanced ease of installation. The strip receives a gland ring and also a helical wire for seating in grooves of a flexible conduit and is otherwise constructed to obtain an enhanced seal.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: September 2, 1986
    Inventor: Stephen Tonchen
  • Prefabrication method and preformed band for use in coupling tubular members
    Patent number: 4466642
    Abstract: Method and apparatus are disclosed for coupling of tubular members using a strip of metal which is preformed with an arcuate bend portion having a configuration and dimensions such as to allow the strip to be more easily wrapped around the members and tightened while obtaining a much tighter grip thereon.
    Type: Grant
    Filed: March 1, 1982
    Date of Patent: August 21, 1984
    Inventor: Stephen Tonchen