Patents by Inventor Eberhard Liebal

Eberhard Liebal 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).

  • Patent number: 4203753
    Abstract: In a turret press for moulding glass, a turntable is equipped with a plurality of equally circumferentially spaced mould-receiving stations which move past stationary operating stations comprising at least one glass charging station, at least one glass pressing station and at least one product withdrawing station. The turntable is driven by a Maltese cross mechanism connected to a continuously running motor by a clutch and brake device. Scanners provided for uncoupling and braking the Maltese cross mechanism are disposed at each said operating station to co-operate with actuators of the mould-receiving stations on the turntable. Any one actuator is operative to co-operate with the scanners only when a mould is present at the respective mould-receiving station.
    Type: Grant
    Filed: November 20, 1978
    Date of Patent: May 20, 1980
    Assignee: Messrs. J. Walter Co. Maschinen GmbH
    Inventors: Eberhard Liebal, Norbert Eichenberg
  • Patent number: 4184865
    Abstract: The invention relates to a mounting plate, by means of which the lower part of the compression mould in a press, in particular a glass press, can be fixed on a carrier plate. A mounting plate of this type has a coolant path defined by a cavity in the form of a spiral coolant channel which runs approximately parallel to the bottom and top faces of the mounting plate, from the central region thereof towards its periphery. In this way, more heat may be removed by the coolant from the central region of the compression mould than from its peripheral region which is in any case more strongly affected by the cooling action from the outside. As a result, a more homogeneous temperature distribution is obtained in the mould.
    Type: Grant
    Filed: July 28, 1978
    Date of Patent: January 22, 1980
    Assignee: Messrs. J. Walter Co. Maschinen GmbH
    Inventor: Eberhard Liebal