Patents by Inventor Norbert Peretti

Norbert Peretti 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 for producing blown hollow glass objects
    Patent number: 4072491
    Abstract: A blown hollow glass object having an optical inner wall structure is produced by pressing a plunger against a heated glass blank which has been inserted into a hollow mold cavity. The plunger is configured to taper toward a narrower end in the direction in which the plunger is introduced into the mold cavity. After formation of the optical inner wall structure by pressing of the plunger against the glass blank, the plunger is longitudinally withdrawn. The optical inner wall of the glass object is formed as a result of a generally helically shaped molding pattern defined about the exterior surface of the plunger. The molding pattern is configured in such a way as to prevent deformation of the optical inner wall structure when the plunger is withdrawn.
    Type: Grant
    Filed: September 23, 1976
    Date of Patent: February 7, 1978
    Assignee: Owens-Illinois, Inc.
    Inventors: Heinz Kramer, Norbert Peretti, Helmut Waschneck
  • Apparatus for producing blown hollow glass objects
    Patent number: 4008063
    Abstract: A blown hollow glass object having an optical inner wall structure is produced by pressing a plunger against a heated glass blank which has been inserted into a hollow mold cavity. The plunger is configured to taper toward a narrower end in the direction in which the plunger is introduced into the mold cavity. After formation of the optical inner wall structure by pressing of the plunger against the glass blank, the plunger is longitudinally withdrawn. The optical inner wall of the glass object is formed as a result of a generally helically shaped molding pattern defined about the exterior surface of the plunger. The molding pattern is configured in such a way as to prevent deformation of the optical inner wall structure when the plunger is withdrawn.
    Type: Grant
    Filed: June 10, 1975
    Date of Patent: February 15, 1977
    Assignee: Owens-Illinois, Inc.
    Inventors: Heinz Kramer, Norbert Peretti, Helmut Waschneck