Patents by Inventor Ernst Jonsson

Ernst Jonsson 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 at mixing devices for mixing pulverulent and liquid substances with each other for the manufacture of medical products
    Patent number: 6871996
    Abstract: The present invention relates to a device at mixing devices for mixing pulverulent and liquid substances with each other for the manufacture of medical products, wherein a displaceable piston means (17) has at least one groove (22) extending around said piston means (17) and at least one sealing ring (23) is located in said groove (22). At least one connecting passage (22e) is provided for preventing a liquid substance (21) from generating or building up such a pressure in an inner space (22d) in the groove (22) within or behind the sealing ring (23) that said pressure presses the sealing ring (23) in a direction outwards (F) relative to the groove (22) towards a surrounding wall (1a) of the mixing device (1) and prevents or counteracts flow of the liquid substance (21) past the piston means (17) when said piston means (17) is displaced.
    Type: Grant
    Filed: October 28, 2002
    Date of Patent: March 29, 2005
    Assignee: Biomet Merck Cementing Technologies AB
    Inventor: Ernst Jonsson
  • Device at mixing devices for mixing pulverulent and liquid substances with each other for the manufacture of medical products
    Publication number: 20030086332
    Abstract: The present invention relates to a device at mixing devices for mixing pulverulent and liquid substances with each other for the manufacture of medical products, wherein a displaceable piston means (17) has at least one groove (22) extending around said piston means (17) and at least one sealing ring (23) is located in said groove (22). At least one connecting passage (22e) is provided for preventing a liquid substance (21) from generating or building up such a pressure in an inner space (22d) in the groove (22) within or behind the sealing ring (23) that said pressure presses the sealing ring (23) in a direction outwards (F) relative to the groove (22) towards a surrounding wall (1a) of the mixing device (1) and prevents or counteracts flow of the liquid substance (21) past the piston means (17) when said piston means (17) is displaced.
    Type: Application
    Filed: October 28, 2002
    Publication date: May 8, 2003
    Applicant: SCANDIMED INTERNATIONAL AB
    Inventor: Ernst Jonsson