Patents by Inventor Stephan Weiß

Stephan Weiß 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: 5384528
    Abstract: A method and a device for recognizing defects in a triggering system of a controlled series compensator. An intervention is made in the closed-loop control of the controlled series compensator on the basis of an impedance differential (.DELTA.Z) determined from a setpoint impedance (Z.sub.S1, Z.sub.S2) and from an effective impedance (Z.sub.i) calculated from system variables (i.sub.L,u.sub.C), and in dependence upon the voltage level of a measured conduction current (i.sub.L). When the conduction currents (i.sub.L) are smaller than a limiting value (i.sub.LG), the firing is blocked in the branches, and when the conduction currents (i.sub.L) are greater than a limiting value (i.sub.LG), a firing-angle signal (S.sub..alpha.S) is generated, through which means the valve (Th1, Th2) can be protectively fired. Thus, one is able to recognize defects in the triggering system of the controlled series compensator by applying system variables (i.sub.L,u.sub.
    Type: Grant
    Filed: May 18, 1993
    Date of Patent: January 24, 1995
    Assignee: Siemens Aktiengessellschaft
    Inventors: Karl-Friedrich Leowald, Stephan Weiss
  • Patent number: 5377869
    Abstract: Disclosed are dispensers for dispensing a liquid from a vessel having a pump nozzle and methods for dispensing a liquid by moving the bottle towards a pump nozzle. The dispenser is provided with a housing for the bottle, a pump nozzle which is set in a substantially stationary position in the housing and a mechanism to move the bottle towards the pump nozzle so as to cause liquid to dispense from the nozzle. The dispensers of the invention are suitable for dispensing liquid, such as spraying fragrances. The dispensers of the invention are especially suited for portable, purse-or pocket-sized fragrance dispensers.
    Type: Grant
    Filed: August 24, 1993
    Date of Patent: January 3, 1995
    Inventors: Stephan Weiss, David Seidler
  • Patent number: 5291120
    Abstract: A method and an apparatus for symmetrically modulating a controlled series compensation system (2) in electrical networks (6). Impedance manipulated variables determined from a current control for the series compensators (14) of the system (2) are limited by determining an upper or lower limiting value (Z.sub.OO,Z.sub.OU). The upper and lower limiting values are respectively determined by adding a positive or negative deviation (.DELTA.Z.sub.+,.DELTA.Z.sub.-) to and subtracting it from a reference manipulated variable (Z.sub.O) for impedance. The reference manipulated variable (Z.sub.O) for impedance is selected from the impedance manipulated variables (Z.sub.y1,Z.sub.y2,Z.sub.y3). Thus, small asymmetries can be corrected and, given network faults of generally only a brief duration, unnecessary control deviations can be avoided.
    Type: Grant
    Filed: May 18, 1993
    Date of Patent: March 1, 1994
    Assignee: Siemens Aktiengesellschaft
    Inventors: Karl-Friedrich Leowald, Stephan Weiss
  • Patent number: D348218
    Type: Grant
    Filed: August 27, 1992
    Date of Patent: June 28, 1994
    Inventor: Stephan Weiss
  • Patent number: D352890
    Type: Grant
    Filed: August 27, 1992
    Date of Patent: November 29, 1994
    Inventor: Stephan Weiss
  • Patent number: D353097
    Type: Grant
    Filed: August 27, 1992
    Date of Patent: December 6, 1994
    Inventor: Stephan Weiss
  • Patent number: D353774
    Type: Grant
    Filed: August 27, 1993
    Date of Patent: December 27, 1994
    Inventor: Stephan Weiss
  • Patent number: D353993
    Type: Grant
    Filed: August 27, 1992
    Date of Patent: January 3, 1995
    Inventors: Stephan Weiss, David Seidler