Patents by Inventor Ingvar Olaffson

Ingvar Olaffson 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).

  • Cassette for intravenous delivery system
    Patent number: 4142524
    Abstract: A cassette is described for use in an intravenous delivery system having a pump. The volume of a main chamber defined by the cassette body is varied by a membrane in a wall thereof while unidirectional inlet and outlet valves maintain the direction of fluid flow into and out of the main chamber. A prechamber is positioned above the inlet port in order to accumulate air from the upstream portion of the intravenous delivery system in which the cassette is used.
    Type: Grant
    Filed: June 2, 1977
    Date of Patent: March 6, 1979
    Assignee: Andros Incorporated
    Inventors: Jal S. Jassawalla, Herbert Chen, Ingvar Olaffson