Patents by Inventor Lennart O. E. Nilsson

Lennart O. E. Nilsson 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: 4356383
    Abstract: Heating apparatus for heating of a fluid. The heating apparatus comprises a conduit having a fluid passage therethrough for conduction of a fluid to be heated, a heating device, such as for example electrical heating plates, in heat transfer contact with a portion of the conduit for heating the fluid being conducted therethrough, and a temperature sensing device positioned in engagement with the conduit at a predetermined location along the conduit external to the conduit for sensing the temperature of the fluid to be conducted therepast. A contact member is arranged to engage the flexible conduit at the predetermined location for compressing the flexible conduit to constrict the cross sectional area of the flow passage thereat when the flow rate of the fluid is below a predetermined flow rate. Preferably, the contact member is spring biased towards the flow passage constricting position, and is movable away from such position when the flow rate exceeds a predetermined flow rate.
    Type: Grant
    Filed: November 20, 1979
    Date of Patent: October 26, 1982
    Assignee: Gambro AB
    Inventors: Bengt A. G. Dahlberg, Bengt M. Holmberg, Lennart O. E. Nilsson