Patents Assigned to Sartorius-Werke GmbH (und. vorm. Gottinger Prazisionswaagenfabrik GmbH)
  • Patent number: 4153124
    Abstract: An electromagnetically compensating beam balance has a balance housing, a am and a fixed counterweight. Weight changing means, which change the weighing range (scale) by substitution, are provided on the load receiving side. A parallel guidance system is provided. Rods which accept only horizontal forces are coupled between a load carrier and the housing. Vertical flexure elements, which accept vertical forces, are coupled between the beam and the load carrier.
    Type: Grant
    Filed: May 10, 1977
    Date of Patent: May 8, 1979
    Assignee: Sartorius-Werke GmbH (und vorm. Gottinger Prazisionswaagenfabrik GmbH)
    Inventors: Erich Knothe, Christoph Berg, Franz J. Melcher
  • Patent number: 4103750
    Abstract: A method of producing signals for a damping control of an electric measurvalue indicator, especially an electromagnetic precision balance, having an active filter or impedance transformer located in a branch which filters out the a.c. voltage is disclosed. Transient signals in the form of a.c. voltages with different frequencies are applied to the output of the active filter or transformer in the noise range. Sequentially tapped values of the a.c. voltages are compared in the noise range with previous values. A circuit for producing signals for a damping control of an electric measured-value indicator includes a comparator connected with the low ohmage output of a filter or impedance transformer. The comparator is provided with a switchable voltage storage device to which a differentiating element and an amplifier are connected. When a.c.
    Type: Grant
    Filed: January 12, 1977
    Date of Patent: August 1, 1978
    Assignee: Sartorius-Werke GmbH (und vorm. Gottinger Prazisionswaagenfabrik GmbH)
    Inventors: Franz Josef Melcher, Christian Oldendorf
  • Patent number: 4004458
    Abstract: A balance or dynamometer which comprises a coil in the work gap of an eleomagnet having a core provided with discrete groups of turns, the number of ampere turns in the groups of turns corresponding to the sequence or code values of a preselector code, the coil and electromagnet being disturbed from a predetermined position relative to each other under the influence of a force; such disturbance being recorded by a position indicator connected to the input of a forward/backward counter; means for arranging that the number registered in the counter at any one time connects an associated number of groups of turns to a constant current source connected to the coil; the coil and electromagnet returning to said predetermined position when the counter has connected an appropriate number of groups of turns to the constant current source to compensate for the disturbing force.
    Type: Grant
    Filed: March 5, 1976
    Date of Patent: January 25, 1977
    Assignee: Sartorius-Werke GmbH (und. vorm. Gottinger Prazisionswaagenfabrik GmbH)
    Inventors: Erich Knothe, Franz Josef Melcher, Christoph Berg