Patents by Inventor Roger Ingemar Andersson

Roger Ingemar Andersson 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
  • Ink supply arrangement for ink jet printers
    Patent number: 3967286
    Abstract: An ink reservoir and supply arrangement associated with a printing head of an ink jet printer having means for filling the supply device automatically. The device is arranged to follow the movements of the printing head along an adjacent recording medium. A liquid filling member is adapted to transfer the liquid from the storing device to the supply device.
    Type: Grant
    Filed: December 26, 1974
    Date of Patent: June 29, 1976
    Assignee: Facit Aktiebolag
    Inventors: Roger 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