Patents by Inventor Heinrich M. G. Bergmann

Heinrich M. G. Bergmann 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).

  • Blow molding machine with accumulator cushion regulation
    Patent number: 4971542
    Abstract: The invention relates to a blow molding machine for the blow molding of hollow articles, with an accumulator head (1) for producing a preform and with a blow mold for forming a hollow article from the preform. After completion of a blow molding sequence, a piston positioning signal is derived by a control system (15), to regulate the position of a discharge piston (4) in the accumulator head (1), from a comparative signal of the actual position and set position of the discharge piston (4). The set position is determined by integration from a previously specified speed set point profile. The control system (15) further superimposes an influx signal on the comparative signal, which corresponds to the change in volume of plastic flowing from an extruder (2) to replace the discharged contents of the accumulator head (1).
    Type: Grant
    Filed: March 20, 1989
    Date of Patent: November 20, 1990
    Assignee: U.S. Philips Corporation
    Inventors: Jacques A. E. Langlois, Heinrich M. G. Bergmann, Wolfgang Nuhn
  • Blow molding machine with accumulator waiting time control
    Patent number: 4959001
    Abstract: A blow molding machine for the blow molding of hollow articles includes an accumulator head (1) for producing a preform and a blow mold for forming a hollow article from the preform. After completion of a blow molding sequence and the filling of the accumulator head (1), a piston positioning signal is sent by a control system (15) to regulate the position of a discharge piston (4) in the accumulator head (1) derived from a comparative signal of the actual position and set position of the discharge piston (4). The set position is determined by integration from a previously specified speed set point profile. The control system (15) further superimposes an influx signal on the comparative signal, which corresponds to the change in volume of plastic flowing from an extruder (2) to replace the discharged contents of the accumulator head (1).
    Type: Grant
    Filed: March 21, 1989
    Date of Patent: September 25, 1990
    Assignee: U.S. Philips Corporation
    Inventors: Jacques A. E. Langlois, Heinrich M. G. Bergmann, Wolfgang Nuhn