Patents by Inventor Paul E. Allarie

Paul E. Allarie 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: 7462019
    Abstract: A pump for pumping sensitive fluids, such as blood, having no mechanical contact between the impeller and any other structure. The pump comprises a pump housing, an impeller disposed within the pump housing, a magnetic bearing system for supporting and stabilizing the impeller in five degrees of freedom, and a conformally shaped magnetically linked motor for rotating the impeller. The magnetic bearing system and motor advantageously comprise electromagnets and permanent magnets for stability and control of the impeller, and to reduce size, weight, and pump power consumption. Permanent and electromagnets are disposed on the pump housing and permanent magnets are disposed on the impeller such that by controlling electric current through the electromagnets on the housing, the magnetically suspended impeller functions as the rotor, and the housing as the stator of a D.C. motor.
    Type: Grant
    Filed: April 22, 1999
    Date of Patent: December 9, 2008
    Inventors: Paul E. Allarie, Gill B. Bearnson, Ron Flack, Pratap S. Khanwilkar, B. Ajit Kumar, James W. Long, Jr., Don B. Olsen, Jeffrey Decker, Michael Baloh