Patents by Inventor Magnus E. Flett

Magnus E. Flett 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 and apparatus for performing a computer-assisted orthopaedic procedure
    Patent number: 8361128
    Abstract: A method of performing a computer-assisted orthopaedic procedure includes securing a sensor support instrument to the patient's bone. A number of sensors are secured to the support instrument. A computer-assisted orthopaedic surgical instrument is also disclosed.
    Type: Grant
    Filed: September 30, 2004
    Date of Patent: January 29, 2013
    Assignees: DePuy Products, Inc., DePuy International Limited
    Inventors: D. Steven Block, Thorsten M. Burger, Francois Urvoy, Magnus E. Flett, Michal Slomczykowski, Marcellino Maheson, Roger Oakeshott, Alec Birkbeck
  • Butterfly valve seal
    Patent number: 5503367
    Abstract: An exhaust gas obturator comprises a tubular housing (11a) having a butterfly valve (14a,15) journalled in the wall thereof. The butterfly valve spindle (14a) passes through a chamber (24,25) on one side of the housing and carries a sealing ring (26) thereon and located in the chamber (24,25). The sealing ring (26) is a close sliding fit on the butterfly valve spindle (14a) when the obturator is closed, exhaust gas pressure on the upstream side enters the chamber (24,25) and urges the seal (26) against a cover plate (23a) thereby to prevent the escape of exhaust gas to atmosphere. The chamber (24,25) is preferably vented to the downstream side. The seal may alternatively be biased by resilient means (not shown).
    Type: Grant
    Filed: April 25, 1994
    Date of Patent: April 2, 1996
    Assignee: WABCO Automotive U.K. Limited
    Inventors: Derek Thompson, Magnus E. Flett