Patents by Inventor Per F. Jensen

Per F. Jensen 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 preventing oil from dripping out of the burner nozzle of an oil-fired heating system
    Patent number: 5090895
    Abstract: For reducing the unwanted escape (dripping) of oil from a burner nozzle, nozzle holder, oil warmer apparatus is provided to continuously regulate the oil temperature during operation of a oil fired heating system to maintain a nearly constant oil volume in the nozzle holder, oil warmer unit. The apparatus includes a pair of oil pipes that are encapsulated and connected between the nozzle and pump connections, there being a pair of heating elements that are also encapsulated for heating the oil pipes. The first heating element is permanently energized during the operation of the heating system while the second heating element is energized only when oil is being feed to the burner nozzle.
    Type: Grant
    Filed: April 9, 1991
    Date of Patent: February 25, 1992
    Assignee: Danfoxx A/S
    Inventors: Per F. Jensen, Ingvard M. Madsen, Leif B. Bonnerup
  • Packaging container for computer product
    Patent number: D318419
    Type: Grant
    Filed: July 28, 1988
    Date of Patent: July 23, 1991
    Inventors: Per F. Jensen, Steven McGugan