Patents by Inventor Lars-Erik Nyman

Lars-Erik Nyman 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).

  • Device for breeding fish and shellfish
    Patent number: 4711199
    Abstract: A device and a plant for breeding fish, shellfish, etc. includes one or several tanks of a non-rigid material which are lowered into the water. Each tank has at least one inlet and at least one outlet for water. The inlet and the outlet are so arranged that the water level in the tank is somewhat above the surrounding level to maintain the walls of the tank in a tightened out position by the higher static pressure in the tank.
    Type: Grant
    Filed: August 21, 1986
    Date of Patent: December 8, 1987
    Assignee: Flygt AB
    Inventor: Lars-Erik Nyman
  • Mechanical seal
    Patent number: 4140322
    Abstract: The rotatable seal ring of a mechanical seal is attached to a plain shaft by a grip ring and a housing that includes a disc spring. The rotatable seal ring is pressed against the non-rotatable ring by the disc spring, the compression of which is uniquely controlled by the depth of a recess formed in the housing to receive the grip ring.
    Type: Grant
    Filed: December 30, 1977
    Date of Patent: February 20, 1979
    Assignee: ITT Industries, Inc.
    Inventor: Lars-Erik Nyman