Patents by Inventor Lars A. T. Kumbrant

Lars A. T. Kumbrant 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: 4206652
    Abstract: Sampler for drawing samples from melt comprising an inlet tube (1) and a sample container (3) and a sleeve (2) at least surrounding the sample container (3). The novelty features of the invention reside in the fact that the sleeve (2) has the shape of a truncated cone and in that the sample container (8) is located in the tapered sleeve (2) at its end with a smaller diameter.
    Type: Grant
    Filed: January 29, 1979
    Date of Patent: June 10, 1980
    Inventor: Lars A. T. Kumbrant
  • Patent number: 4197745
    Abstract: Disposable sampling apparatus for drawing samples from melts by lowering thereof into the melt and comprising a mold embedded in a sand body, a tube constituting an inlet for the molten material into the mold and projecting out of the sand body, and a tubular sleeve surrounding a portion of the sand body and at least a portion of the inlet tube to the mold. The novelty features of the invention reside in the fact that the sleeve is arranged on a portion of the sand body adjacent the inlet tube and extends therefrom outwards around the inlet tube, and that there is a gas flow path through said sand portion from the recess formed between the inlet tube and the sleeve to an open portion of the sand body.
    Type: Grant
    Filed: September 26, 1978
    Date of Patent: April 15, 1980
    Inventor: Lars A. T. Kumbrant
  • Patent number: 4137774
    Abstract: Sampling mould for drawing samples of molten material from pools of molten materials, e.g. steel samples, and consisting of two parts of which at least one is provided with a recess which forms a specimen, said two parts being located and fastened to each other, and an entrance passage which through a channel permits the molten metal to flow into the recess, wherein at least one cavity, which forms a hollow of a fixed size, is provided in at least one of said two parts, said cavity or cavities being connected to the hollow forming the specimen through a channel.
    Type: Grant
    Filed: March 30, 1977
    Date of Patent: February 6, 1979
    Inventor: Lars A. T. Kumbrant