Patents by Inventor Fritz Laubli

Fritz Laubli 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 and a control system for controlling the exit temperature of vapor flowing through a contact heating surface of a vapor generator
    Patent number: 4031863
    Abstract: Measurements of the instantaneous flow of heat delivered to the vapor generator and the quantity of vapor flowing momentarily through the contact heating surface are made and the resultant signals are compared by subtraction or division to obtain a comparison signal. The comparison signal is then imposed on a control element in the form of a valve to cause an injection of more or less water into the vapor flowing into the heating surface in order to regulate the exit temperature of the vapor.
    Type: Grant
    Filed: September 26, 1975
    Date of Patent: June 28, 1977
    Assignee: Sulzer Brothers Limited
    Inventor: Fritz Laubli
  • Process for regulating a steam generator and a regulatory means therefor
    Patent number: 3942483
    Abstract: The steam generator which may be a forced-flow type, a drum boiler type or exhaust-gas type has at least one of the operational magnitudes, i.e. firing intensity, feedwater flow rate, gas flow rate and the like, regulated in accordance with temperature variations in the region of the economiser. The temperature variation is subjected to a retardation and the resulting signal is superimposed on the control signal (L) for the operating magnitude.
    Type: Grant
    Filed: March 20, 1975
    Date of Patent: March 9, 1976
    Assignee: Sulzer Brothers Limited
    Inventor: Fritz Laubli