Patents by Inventor Dan ?kerfeldt

Dan ?kerfeldt 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).

  • Patent number: 5226423
    Abstract: A sensor guide has a sensor element, an electronic unit, a signal transmitting cable connecting the sensor element to the electronic unit, a flexible tube having the cable and the sensor element disposed therein, a solid metal wire having a plurality of sections with differing thicknesses such that each of the sections has a different flexibility, and a coil which is attached to a distal end of the wire. An inside portion of the flexible tube acts as an air channel to establish communication between the sensor element and atmospheric pressure. In addition, the wire is rigidly disposed in the sensor guide and extends along the entire sensor guide inside of the tube. Moreover, one of the plurality of sections is an enlarged portion having a slot therein and the sensor element is disclosed in the slot between the coil and the proximal end of the wire.
    Type: Grant
    Filed: July 10, 1991
    Date of Patent: July 13, 1993
    Assignee: Radi Medical Systems AB
    Inventors: Lars Tenerz, Dan kerfeldt
  • Patent number: D507053
    Type: Grant
    Filed: August 4, 2003
    Date of Patent: July 5, 2005
    Assignee: RADI Medical Supplies
    Inventors: Dan Åkerfeldt, Per Egnelöv