Patents by Inventor Wolfgang Dohmstreich

Wolfgang Dohmstreich 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).

  • Process for testing an electronic electricity meter
    Patent number: 5644222
    Abstract: The invention relates to an electronic electricity meter (1) having an optical interface (5, 6), which is used to test the load curve of the meter. To this end, after a test message is received from a testing unit (7, 8, 9), the microcomputer (2) of the meter (1) applies load meter pulses to the optical interface (5, 6).
    Type: Grant
    Filed: March 24, 1995
    Date of Patent: July 1, 1997
    Assignee: Siemens Aktiengesellschaft
    Inventors: Wolfgang Dohmstreich, Klaus Windsheimer
  • Current-voltage transformer for electronic house-service meter
    Patent number: 5177433
    Abstract: The current transformer of an electronic house-service meter has a ferromagnetic core which, except for an air gap, is closed. A measuring coil is inserted in the air gap and is fastened, and dimensioned so that it lies within the cross sectional area of the core.
    Type: Grant
    Filed: January 18, 1991
    Date of Patent: January 5, 1993
    Assignee: Siemens Aktiengesellschaft
    Inventors: Manfred Schwendtner, Gunter Steinmuller, Wolfgang Dohmstreich
  • Three-phase alternating current circuit configuration, for using a power supply for the synchronized timing for an electrical apparatus
    Patent number: 5032974
    Abstract: A three-phase circuit configuration for the synchronized timing of an electrical apparatus with the three phase power supply where the timing clock pulses are formed from a control voltage. In a four wire configuration, the control voltage is the voltage between a neutral point formed by three unequal resistors and the neutral line. In a three wire configuration, an additional neutral point is formed by coupling together another set of three resistors. The control voltage for the three wire configuration is the voltage between the two neutral points.
    Type: Grant
    Filed: December 1, 1989
    Date of Patent: July 16, 1991
    Assignee: Siemens Aktiengesellschaft
    Inventors: Wolfgang Dohmstreich, Guenter Steinmueller