Patents by Inventor Arne I. Johansson

Arne I. Johansson 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).

  • Fail-safe device for a lid of a pressure vessel
    Patent number: 4426358
    Abstract: A fail-safe device for a pressure vessel includes a blocking device for a lid thereof, which blocking device is locked by means of a first locking device sensing the internal pressure in the vessel. This device in its turn is provided with a second locking device which works independently by sensing pressure or temperature inside the vessel and locks the first locking device in its locked position whenever pressure or temperature is dangerously high inside the vessel. The object is to assure a safe closing of the lid which is both foolproof and fail-safe.
    Type: Grant
    Filed: April 28, 1982
    Date of Patent: January 17, 1984
    Inventor: Arne I. Johansson
  • Pressure vessel with hatch
    Patent number: 4256701
    Abstract: A hatch intended for an autoclave or a similar pressure vessel for movement in two directions at an angle to each other provided with a plurality of eccentrically mounted members.
    Type: Grant
    Filed: April 10, 1979
    Date of Patent: March 17, 1981
    Inventor: Arne I. Johansson