Patents by Inventor Heniz Nyffeler

Heniz Nyffeler 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).

  • Electrically weldable bushings
    Patent number: 4530520
    Abstract: A bushing for joining the ends of fluid line conduits, or similar elements, comprising a body of thermoplastic, in which is embedded, in helical form, a resistance wire. The wire has a low coefficient of thermal expansion, permitting the thermoplastic material to melt and weld prior to the expansion thereof.
    Type: Grant
    Filed: March 8, 1984
    Date of Patent: July 23, 1985
    Assignee: Von Roll AG
    Inventors: Heniz Nyffeler, Rudolf Buri