Patents by Inventor Christian LaCour

Christian LaCour 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: 5803433
    Abstract: An apparatus for orienting the forces exerted by a helical coil spring on relatively movable elements is disclosed in which a movable element is movably mounted within a casing so as to move along a movement axis, in which a helical coil spring is interposed between the casing and the movable element so as to exert opposite forces on the casing and the movable element. The lateral forces and the torque forces on the movable element are eliminated by using a swivel joint interposed between the piston and one end of the helical coil spring. The use of the swivel element insures that the force exerted on the movable element by the helical coil spring is coincident with the movement axis of the movable element. A second swivel joint may be utilized between the second end of the helical coil spring and the casing, if desired.
    Type: Grant
    Filed: March 20, 1997
    Date of Patent: September 8, 1998
    Assignee: Societe Nationale d'Etude et de Construction de Moteurs d'Aviation "S.N.E.C.M.A."
    Inventors: Jean-Marie Brocard, Christian Lacour, Michel Marie Andre Albert Lechevalier
  • Patent number: 5333644
    Abstract: A valve assembly is disclosed having a valve body with dual valve seats and movable valve member located in the valve body having dual sealing surfaces to bear against the two value seats. One of the valve seats has a sharp-edged configuration which is contacted by a generally frusto-conical sealing surface on a movable primary valve member to crush or break any foreign material in the fluid flow stream. The conical sealing surface and the sharp-edged valve seat also act as a seal to block the fluid flow passageway. A secondary valve member is attached to the primary valve member and has a second sealing surface configured to engage the second valve seat of the valve body. The second valve seat and the second sealing surface may be annular and each have a partially, spherical, cross-sectional configuration. The secondary valve member is connected to the primary valve member such that they may move relatively to each other along their axis of movement.
    Type: Grant
    Filed: January 12, 1994
    Date of Patent: August 2, 1994
    Assignee: Societe Nationale d'Etude et de Construction de Moteurs d'Aviation
    Inventors: Eddy F. M. G. Heyden, Christian LaCour, Michel M. A. A. Lechevalier, Christophe N. Riou