Patents by Inventor Bengt A. G. Dahlberg

Bengt A. G. Dahlberg 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: 4650458
    Abstract: Apparatus is disclosed for the measurement and replacement of physiological fluids including a meter for measuring the amount of a physiological fluid flowing through the meter, a first conduit for continuously delivering the physiological fluid to the meter, a second conduit for replacing the measured amount of physiological fluid with a corresponding amount of a replacement fluid, and a pressure equalizer associated with the first conduit for equalizing the pressure in the physiological fluid flowing through the first conduit whereby the flow of the physiological fluid through the meter is substantially unaffected by pressure variations in the physiological fluid itself.
    Type: Grant
    Filed: June 7, 1985
    Date of Patent: March 17, 1987
    Assignee: Gambro Lundia AB
    Inventors: Bengt A. G. Dahlberg, Jan-Bertil Jeppsson, Lars I. Ohlsson, Tord B. Simonsson
  • Patent number: 4536201
    Abstract: An apparatus as disclosed for the venting of gases contained in fluids passing through a primary conduit in connection with medical treatments comprising throttling means interposed in the primary conduit, pump means downstream of the throttling means for drawing the fluid through said primary conduit, means for enhanced bubble formation in the fluid positioned between the throttling means and pump means in the primary conduit, and venting means disposed in the primary conduit downstream of the pump means, the venting means for removing gaseous bubbles from the fluid when the fluid is passed therethrough.
    Type: Grant
    Filed: April 24, 1984
    Date of Patent: August 20, 1985
    Assignee: Gambro Lundia AB
    Inventors: Fritz L. Brorsson, Bengt A. G. Dahlberg, Bengt M. Holmberg
  • 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