Patents by Inventor Paul Henri Marnot

Paul Henri Marnot 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).

  • Sealing device for rotating shaft
    Patent number: 6152454
    Abstract: The present invention relates to a sealing device for rotating shaft, intended to prevent leaks of a lubricant medium at a bearing supporting the shaft of a machine, this device including, for this purpose, between stationary parts and rotating parts of the machine, a seal carrier mounted in sealed manner on a stationary part, this seal carrier carrying at least one first annular seal surrounding the shaft and provided with a flexible sealing lip capable of providing sealed contact with a rotating bearing surface integral with said shaft.
    Type: Grant
    Filed: May 29, 1998
    Date of Patent: November 28, 2000
    Assignee: Eurocopter
    Inventor: Paul Henri Marnot
  • Sealing device for rotating shaft
    Patent number: 6098990
    Abstract: The present invention relates to a sealing device for rotating shaft, intended to prevent leaks of a lubricant medium at a bearing supporting the shaft of a machine, this device including, for this purpose, between stationary parts and rotating parts of the machine, a seal carrier mounted in sealed manner on a stationary part, this seal carrier carrying at least one first annular seal surrounding the shaft and provided with a flexible sealing lip capable of providing sealed contact with a rotating bearing surface integral with said shaft.
    Type: Grant
    Filed: May 29, 1998
    Date of Patent: August 8, 2000
    Assignee: Eurocopter
    Inventor: Paul Henri Marnot
  • Sealing device for rotating shaft
    Patent number: 5820132
    Abstract: When the annular seal 11 which provides sealing around a shaft 1 is damaged, something which is signalled by an oil leak, the axially mobile seal carrier 10 is pushed to the left, with the aid of the lug 13, to bring an additional seal 12 into service, this making it possible to eliminate the leak without any dismantling. This operation can be brought about by a jack and can be automated.Application to all rotating shafts.
    Type: Grant
    Filed: December 16, 1996
    Date of Patent: October 13, 1998
    Assignee: Eurocopter France
    Inventor: Paul Henri Marnot