Patents by Inventor Walter Hegetschweiler

Walter Hegetschweiler 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).

  • Method and apparatus for controlling a screening device based on more than one set of factors
    Patent number: 6064949
    Abstract: A screening device (3) for screening exterior light (2) which illuminates a room (1), is controlled such that in the room on the one hand, user comfort with regard to freedom from dazzling and room temperature is optimal and, on the other hand, energy consumption for artificial lighting within the room or for heating and cooling the room is minimized.
    Type: Grant
    Filed: February 27, 1997
    Date of Patent: May 16, 2000
    Assignee: Zumtobel Licht GmbH
    Inventors: Walter Werner, Gunther Sejkora, Joachim Geiginger, Manuel Bauer, Andre Faist, Nicolas Morel, Jean-Louis Scartezzini, Walter Hegetschweiler
  • Apparatus for and method of controlling and/or regulating process parameters of an installation
    Patent number: 5786993
    Abstract: An apparatus for controlling and/or regulating process parameters of an installation such as a building automation installation has at least a first decision table and preferably a second decision table. The decision tables have rules with which a priority is associated. By evaluating the rules of the first decision table, on the basis of the state of a sub-system of the installation, a further state value is ascertained and fed to an input of the second decision table. The state of a further sub-system of the installation is altered by evaluation of rules of the second decision table. The decision tables can be represented for an installation operator in a picture screen window.
    Type: Grant
    Filed: September 3, 1996
    Date of Patent: July 28, 1998
    Assignee: Landis & Gyr Technology Innovation Corp.
    Inventors: Theo Frutiger, Jim Coogan, Walter Hegetschweiler, Franz Renggli