Patents by Inventor Lars-Goran T. Andersson

Lars-Goran T. Andersson 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: 4240060
    Abstract: A method of and a device for switching-off a supervision system, e.g. a system for supervising the speed of a train. It must be possible to switch off the supervision system, but only when a predetermined pattern of operations are followed. This is achieved by using a time control activation current loop to briefly operate a contact device by means of first and second operating members in combination with a time independent activation current loop that holds the contact device closed provided the predetermined pattern of operations is followed.
    Type: Grant
    Filed: December 27, 1976
    Date of Patent: December 16, 1980
    Assignee: U.S. Philips Corporation
    Inventor: Lars-Goran T. Andersson