Patents by Inventor Didier A. Duclos

Didier A. Duclos 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: 5771755
    Abstract: A damped flywheel (10) of the type comprising a first rotating element (12) and a second rotating element (14), which are coaxial and which have the general form of parallel plates (20, 26), and which define between them an annular housing (30) which receives a resilient damping device (32), together with an annular space which receives a friction damping device (58), and of the type comprising two coaxial sealing rings (56A, 56B), in which the friction damping device (58) comprises a part (62) which is driven in rotation by the second rotating element (14) through a head (68) of a member (66) that fastens one (56A) of the sealing rings (56A, 56B) on an annular disc (42) of the second rotating element (14).
    Type: Grant
    Filed: February 28, 1996
    Date of Patent: June 30, 1998
    Assignee: Valeo
    Inventors: Didier Duclos, Jacques Feigler
  • Patent number: 5720475
    Abstract: A torsion damping device having comprising two coaxial parts (11A, 11B), one primary, one secondary, which are mounted for rotation of one with respect to the other against the action of circumferentially acting resilient member (12) and friction member (13). According to the invention, the friction member (13) has at least one thin plate element (50) which, being carried by one of the coaxial parts (11A, 11B), extends obliquely with respect to the axis (A) of the assembly and bears through its edge (51) against the other one of the coaxial parts (11A, 11B), and which is subjected, on its surface (52) that faces away from the axis (A) of the assembly, to the action of a modulating member (53) which is responsive to centrifugal force, for example a spring of the coil spring type loaded with weights.
    Type: Grant
    Filed: December 6, 1995
    Date of Patent: February 24, 1998
    Assignee: Valeo
    Inventor: Didier Duclos
  • Patent number: 5697261
    Abstract: A damping device (10) of the type comprising damping means which are disposed between two coaxial rotating inertia parts (12, 14), and which comprise at least one block of elastically deformable material (56A, 58A, 56B, 58B), which is interposed between the two rotating parts (12, 14), and on which there acts a mechanism which comprises a cam (46A, 46B) and a cam follower element (64A, 64B), characterised in that the cam (46A, 46B) is formed on a tilting member (42A, 42B) which is articulated with respect to a first one (12) of the two rotating parts, and in that the cam follower element is a roller (64A, 64B) which is carried by the second rotating mass (14, 66A, 66B), and which cooperates with the cam (46A, 46B) when the two parts (12, 14) rotate with respect to each other.
    Type: Grant
    Filed: September 27, 1995
    Date of Patent: December 16, 1997
    Assignee: Valeo
    Inventors: Ayman Mokdad, Didier Duclos
  • Patent number: 5673598
    Abstract: The torsion damper comprises two coaxial masses (1, 2) which are mounted for rotation of one with respect to the other against a torsion damper device (3), which comprises friction member (5) and a damper plate (31) fixed to a reaction plate (21) which is part of one of the masses. The other mass includes a central nose (4) which projects axially and penetrates into central bores of the damper plate (31) and reaction plate (21). A plain bearing is interposed between the said central bores and the central nose (4), while the friction member (5) is mounted in a cavity, the greater part of which is bounded by the damper plate (31) and the reaction plate (21).
    Type: Grant
    Filed: July 13, 1995
    Date of Patent: October 7, 1997
    Assignee: Valeo
    Inventor: Didier Duclos
  • Patent number: 4682529
    Abstract: A modular device for loading cartridges on board aircraft is provided equipped with pyrotechnique cartridges with electric detonator, formed from a combination of elements of small volume and low weight comprising a case means enclosing cartridges whose bases carry firing detonators and are fixed to a support plate with interposition, between the support plate and an insulating plate, a printed circuit comprising resilient zones on which are fixed the studs for firing said detonators.
    Type: Grant
    Filed: December 6, 1984
    Date of Patent: July 28, 1987
    Assignee: R. Alkan & Cie
    Inventors: Didier A. Duclos, Pierre F. Coutin
  • Patent number: 4601445
    Abstract: A device for rapidly positioning and removing a loader in and from a carrying device on an aircraft, comprising a lever in the form of a horse shoe or stirrup having a cross leg between two side legs which support the loader and which are pivotably mounted to the carrying device at their ends opposite the cross leg, whereas this latter carries a single screw for fixing to the carrying device, actuation of this lever being facilitated by previously automatically latching the loader to the bottom of the carrying device.
    Type: Grant
    Filed: December 27, 1984
    Date of Patent: July 22, 1986
    Assignee: R. Alkan & Cie
    Inventors: Didier A. Duclos, Pierre F. Coutin
  • Patent number: 4468843
    Abstract: A device is provided formed by a case which contains, on each side of a ball for retaining the coupling member of the belt, two spring-loaded sliding keys cooperating alternately with the ball so that the retreat of one against the action of its spring allows the automatic advance of the other one either for locking said ball in the coupling member of said belt during penetration of this member into the case, or for releasing said coupling member and automatically ejecting same, depending on the key which is moved back against the action of its spring.
    Type: Grant
    Filed: March 18, 1983
    Date of Patent: September 4, 1984
    Assignee: R. Alkan & Cie
    Inventors: Didier A. Duclos, Pierre F. Coutin
  • Patent number: 4223763
    Abstract: This device for absorbing the kinetic energy resulting from the relative motion between two bodies comprises a tubular test-element attached to one body and a pressure member rigid with the other body and contacting a suitable longitudinal profile of the test-tube, so that during the relative movement of the two bodies the movement of the pressure member, for example in the form of a carriage provided with pairs of rollers, is attended by a plastic deformation of the cross-sectional contour of the test-tube.
    Type: Grant
    Filed: December 6, 1978
    Date of Patent: September 23, 1980
    Assignee: R. Alkan & Cie
    Inventors: Didier A. Duclos, Pierre F. Coutin