Patents by Inventor Jan Roger Amberntsson

Jan Roger Amberntsson 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).

  • Ink jet printing head
    Patent number: 4095237
    Abstract: An ink supply to a movable printing head in which the liquid reservoir follows the printing head in its movement along a recording medium and communicates with the liquid pumping chambers by means of at least one channel located in the printing head. In one embodiment, a filter is located in the flow path of the liquid reservoir to the pump chambers while in another embodiment the filter is disposed within the reservoir.
    Type: Grant
    Filed: March 19, 1976
    Date of Patent: June 13, 1978
    Assignee: Aktiebolaget Electrolux
    Inventors: Jan Roger Amberntsson, Roger Ingemar Andersson, Stig Bertil Sultan
  • Printing head for ink jet printer
    Patent number: 4005440
    Abstract: A printing head for an ink jet printer in which a multiplicity of channels are formed, preferably in one plate of the head. Each of the channels communicates with a capillary tube that opens into a boundary surface of the plate. The arrangement of the channels is such that the head can be of a smaller size than other constructions, and the openings of the capillary tubes can be located closer to one another.
    Type: Grant
    Filed: March 10, 1975
    Date of Patent: January 25, 1977
    Assignee: Facit Aktiebolag
    Inventors: Jan Roger Amberntsson, Rober Ingemar Andersson, Stig Bertil Sultan
  • Printing head device for an ink jet printer
    Patent number: 3953862
    Abstract: A printing head for an ink jet printer in which a liquid reservoir is operatively associated therewith. The liquid reservoir is provided with an air inlet opening having a filter which permits the passage of air but prevents liquid flow thereby preventing the leakage of liquid out of the reservoir upon the agitation of the liquid within the reservoir.
    Type: Grant
    Filed: December 26, 1974
    Date of Patent: April 27, 1976
    Assignee: Facit Aktiebolag
    Inventors: Jan Roger Amberntsson, Roger Ingemar Andersson, Stig Bertil Sultan