Patents by Inventor Urs Oehrli

Urs Oehrli 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 for remote control through a power supply system and apparatus for carrying out the same
    Patent number: 3986121
    Abstract: A method for remote-control through a power supply system, wherein at the transmitting end the control commands are superimposed upon a power line of the power supply system in the form of angle-modulated signals and are removed at any point of the power supply system for discrimination and subsequent evaluation according to their momentary frequency or phase.An arrangement for carrying out the aforesaid method is also disclosed wherein a transmitter which can be modulated in its frequency or phase with the information corresponding to control commands is provided at the transmitting end. The transmitter is coupled through coupling means at the transmitting end to a power line of the power supply system used for transmission.
    Type: Grant
    Filed: May 13, 1974
    Date of Patent: October 12, 1976
    Assignee: Zellweger Uster Ltd.
    Inventor: Urs Oehrli