Patents Assigned to Douwes International B.V.
  • Liquid sampler
    Patent number: 4174632
    Abstract: The problem encountered with filling sample bottles with the aid of a known device, that dangerous liquids can only be manipulated by using a branch line to a closed casing, has according to the invention be solved by placing an injection needle within a cap which is fixedly connected to the process portion and has an internal surface which corresponds with the external surface of the sample bottle, which cap preferably also has a slot so that a worker can see to which extent the bottle is filled.
    Type: Grant
    Filed: June 29, 1978
    Date of Patent: November 20, 1979
    Assignee: Douwes International B.V.
    Inventor: Adolf E. Jansen