Patents by Inventor Torgil Stark

Torgil Stark 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 determining the total flow rate in a ventilation installation
    Patent number: 5426975
    Abstract: A method and apparatus for determining the total flow rate of air flowing through a ventilation installation with a free suction fan (15) is described. The flow rate or a corresponding pressure is determined by measurement of the partial flow rate or a corresponding pressure at at least one measurement point in the vicinity of the inlet opening of the fan. A measurement tube (20) open at both ends is suitably used, and oriented with its longitudinal axis in the inflow direction, flow sensors being arranged inside the measurement tube. In this way, there is obtained good measurement accuracy within a large flow range.
    Type: Grant
    Filed: December 3, 1993
    Date of Patent: June 27, 1995
    Assignee: ABB Flakt AB
    Inventor: Torgil Stark