Patents by Inventor Ed G. Rasmussen

Ed G. Rasmussen 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).

  • Method of making a disposable cassette with negative head height fluid supply
    Patent number: 6110410
    Abstract: A method of radio frequency (RF) welding of a flexible PVC sheet to a rigid copolyester carrier by holding a flexible PVC sheet and a rigid copolymer carrier together between heated RF dies. A predetermined temperature differential is maintained between the RF dies, with the flexible sheet side at a higher temperature than the rigid carrier side and adjusted so that a weld plane is established along the interface between the PVC and the copolyester. An RF weld signal is passed through the first and second RF dies and the PVC and copolyester therebetween, so that the flexible PVC sheet and the copolyester rigid carrier partially melt and become welded together at the weld plane.
    Type: Grant
    Filed: September 10, 1996
    Date of Patent: August 29, 2000
    Assignee: McGaw, Inc.
    Inventors: Dana J. Owens, Aaron Raines, Ed G. Rasmussen, David J. Harrison, Carl R. Anderson, David G. Ozinga
  • Disposable cassette with negative head height fluid supply
    Patent number: 5554013
    Abstract: A fluid infusion pump includes a disposable cassette having an inlet, an outlet, and a fluid chamber between the inlet and the outlet. There is a fixed wall of the fluid chamber and a movable wall of the fluid chamber. A pump body receives the cassette in a fixed operating relationship such that an actuator in the pump body is activatable for reciprocal advancement and retraction with respect to the cassette and is adapted to confront the movable diaphragm when the cassette is received in the pump body. There is a detachable coupling between the actuator mounted in the pump body and the movable wall so that fluid is expelled from the fluid chamber on advancement of the actuator and positively drawn into the fluid chamber upon retraction of the actuator.
    Type: Grant
    Filed: July 27, 1994
    Date of Patent: September 10, 1996
    Assignee: McGaw, Inc.
    Inventors: Dana J. Owens, Aaron Raines, Ed G. Rasmussen, David G. Ozinga, David J. Harrison, Carl R. Anderson
  • Disposable cassette with negative head height fluid supply and method
    Patent number: 5302093
    Abstract: A fluid infusion pump includes a disposable cassette having an inlet, an outlet, and a fluid chamber between the inlet and the outlet. There is a fixed wall of the fluid chamber and a movable wall of the fluid chamber. A pump body receives the cassette in a fixed operating relationship such that an actuator in the pump body is activatable for reciprocal advancement and retraction with respect to the cassette and is adapted to confront the movable diaphragm when the cassette is received in the pump body. There is a detachable coupling between the actuator mounted in the pump body and the movable wall so that fluid is expelled from the fluid chamber on advancement of the actuator and positively drawn into the fluid chamber upon retraction of the actuator.
    Type: Grant
    Filed: May 1, 1992
    Date of Patent: April 12, 1994
    Assignee: McGaw, Inc.
    Inventors: Dana J. Owens, Aaron Raines, Ed G. Rasmussen, David J. Harrison, Carl R. Anderson