Patents by Inventor Jorgen Hartvig Petersen

Jorgen Hartvig Petersen 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).

  • Device for regulating the combustion air of a furnace, especially with oil- or gasburner and blower for heating installations
    Patent number: 3978883
    Abstract: The invention relates to a furnace type air throttle assembly which operates in a manner to supply a constant volume of air per unit time. This is done with a bellows and throttle arrangement in which (1) the total pressure at the inlet, which is the sum of the dynamic and static pressure, is utilized to expand the bellows and move the throttle in a closing direction and (2) static pressure and weight means are utilized to compress the bellows and move the throttle in the opening direction.
    Type: Grant
    Filed: May 2, 1975
    Date of Patent: September 7, 1976
    Assignee: Danfoss A/S
    Inventor: Jorgen Hartvig Petersen