Patents by Inventor Per Törngren

Per Törngren 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).

  • Wall mounted microwave oven having a top vent with filter system
    Patent number: 7193195
    Abstract: A filter system for a wall mounted type microwave oven, which has an external enclosure surrounding an oven cavity. The external enclosure includes a bottom closure wall having a suction opening. The external enclosure also includes a top vent opening. An air exhaust path is formed between the external enclosure and the oven cavity wherein air drawn into the suction opening passes through the air exhaust path and is exhausted through the top vent opening. A first filter is provided on the suction side of the air exhaust path and a second filter may be provided on the exhaust side of the air exhaust path. In particular, the first filter may be provided adjacent the suction opening and a second filter may be provided adjacent the top vent opening, such that the first filter is provided at the inlet of the air exhaust path and the second filter is provided at the outlet of the air exhaust path.
    Type: Grant
    Filed: July 1, 2004
    Date of Patent: March 20, 2007
    Assignee: Whirlpool Corporation
    Inventors: Hakan Lundstrom, Per Törngren, Hans Lindgren, Alan D. Bengtson
  • Wall mounted microwave oven having an exhaust ventilation system
    Patent number: 7019272
    Abstract: A wall mounted type microwave oven having an external enclosure including a bottom closure wall which includes a suction opening and a top vent opening and an oven cavity which is supported within the external enclosure. The oven cavity has a rearwardly stepped portion to maximize the usable space provided within the oven cavity. An air exhaust air path is formed between the external enclosure and the oven cavity and includes a bottom plenum, a pair of rear air channels and an upper plenum. The rearwardly stepped area divides the space between the oven cavity and the external enclosure into the two rear air channels. At least one blower is provided within the external enclosure for drawing air into the bottom plenum through the suction opening and exhausting the air out through a top exhaust opening which forms part of the top vent opening.
    Type: Grant
    Filed: July 1, 2004
    Date of Patent: March 28, 2006
    Assignee: Whirlpool Corporation
    Inventors: Eckart Wilhelm Braunisch, Per Törngren, Hans Lundstrom, Hans Lindgren, Hakan Carlsson
  • Method and apparatus for uniform heating in a microwave oven
    Patent number: 6884979
    Abstract: A microwave oven and a method for heating a load which is placed therein. According to the invention a predetermined mode in the cavity of a microwave oven is fed by means of an associated feeding port which is arranged to feed essentially the intended mode only, the feeding of a mode other than the intended, predetermined mode being essentially prevented.
    Type: Grant
    Filed: September 13, 2001
    Date of Patent: April 26, 2005
    Assignee: Whirlpool Corporation
    Inventors: Per Törngren, Ulf Nordh, Håkan Carlsson, Roland Ekinge