Patents by Inventor Carl-Hugo Abrahamson

Carl-Hugo Abrahamson 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: 4431350
    Abstract: An apparatus for penetrating a casing wall, particularly the casing wall of a detonating or firing mechanism, when disarming an undetonated explosive object, such as a live bomb, includes a drill unit driven by an electric motor and carrier means for carrying the drill unit in substantially any selected position relative to said explosive object. A feed means is arranged for moving in a controllable fashion at least a part of the drill unit holding the drill in the axial direction of said drill, and means are provided for detecting a decrease in the drill torque responsive to penetration of the drill through said wall.
    Type: Grant
    Filed: July 2, 1981
    Date of Patent: February 14, 1984
    Inventor: Carl-Hugo Abrahamson
  • Patent number: 4283250
    Abstract: An apparatus for concentrating a liquid solution comprises a plurality of spaced-apart plates arranged for rotation about a substantially horizontal axis; means for supplying solution to the surfaces of said plates, said surfaces being arranged to be exposed to heat and/or flowing gas for vaporizing a readily vaporizable constituent from the solution passed to the surfaces of said plates; and means for collecting concentrated products. The plates are provided with an outer layer of open-pore porous material having the ability to absorb solution; and the radially inner regions of said outer layers extend into a storage space for solution to be concentrated, said storage space being shielded from the outer-layer parts exposed to said heat and/or said gas by means of shielding means.
    Type: Grant
    Filed: February 6, 1980
    Date of Patent: August 11, 1981
    Inventors: Carl-Hugo Abrahamson, Bjorn Heed