Patents by Inventor Noel Lippera

Noel Lippera 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).

  • Method of coupling plastic pipes by welding
    Patent number: 4266997
    Abstract: The coupling of two tubular elements is achieved by welding them together by energization of an electrical resistance element, the one element comprising a male end, the other a socket end. The coupling operation is carried out by means of a composite connecting piece comprising two rings which are fitted on one another, one acting as a support for a bifilar electrical resistance element and the other as a sheath. The electrical resistance element is thus uniformly coated in plastic material and is accurately centered, thereby ensuring uniform heating and welding. This coupling method is for use in coupling discharge pipelines for waste water and rain water and for conduits for industrial fluids.
    Type: Grant
    Filed: June 28, 1979
    Date of Patent: May 12, 1981
    Assignee: Pont-A-Mousson S.A.
    Inventor: Noel Lippera
  • Method of coupling plastic pipes by welding and a connection piece for coupling same
    Patent number: 4176274
    Abstract: The coupling of two tubular elements is achieved by welding them together by energization of an electrical resistance element, the one element comprising a male end, the other a socket end. The coupling operation is carried out by means of a composite connecting piece comprising two rings which are fitted on one another, one acting as a support for a bifilar electrical resistance element and the other as a sheath. The electrical resistance element is thus uniformly coated in plastic material and is accurately centered, thereby ensuring uniform heating and welding. This coupling method is for use in coupling discharge pipelines for waste water and rain water and for conduits for industrial fluids.
    Type: Grant
    Filed: April 20, 1977
    Date of Patent: November 27, 1979
    Assignee: Pont-A-Mousson S.A.
    Inventor: Noel Lippera