Patents by Inventor Leo Trierweiler

Leo Trierweiler 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).

  • Device for end-to-end coupling of a supercritical transmission shaft, in particular for driving a rotorcraft rotor
    Patent number: 9181987
    Abstract: A coupling device (9, 10) providing end-to-end coupling between link shafts (4) and a supercritical transmission shaft (5) for driving a rotorcraft rotor (1). Since the transmission shaft (5) is movable in angular deflection (B), spherical bearing surface friction members (12, 13) are incorporated in the bearings (7) for mounting the transmission shaft (5) on a carrier structure (8). The friction members (12, 13) are caused to press against each other in dry friction via respective friction surfaces. A first friction member (12) is secured to the carrier structure (8) and a second friction member (13) is secured to a cage (14) for housing rolling members (15) carried by the transmission shaft (5). The cage is itself engaged on the transmission shaft (5) to accompany it in its movement in angular deflection (B).
    Type: Grant
    Filed: June 6, 2013
    Date of Patent: November 10, 2015
    Assignee: Airbus Helicopters
    Inventors: Romain Nevers, Leo Trierweiler, Francois Malburet
  • DEVICE FOR END-TO-END COUPLING OF A SUPERCRITICAL TRANSMISSION SHAFT, IN PARTICULAR FOR DRIVING A ROTORCRAFT ROTOR
    Publication number: 20140004964
    Abstract: A coupling device (9, 10) providing end-to-end coupling between link shafts (4) and a supercritical transmission shaft (5) for driving a rotorcraft rotor (1). Since the transmission shaft (5) is movable in angular deflection (B), spherical bearing surface friction members (12, 13) are incorporated in the bearings (7) for mounting the transmission shaft (5) on a carrier structure (8). The friction members (12, 13) are caused to press against each other in dry friction via respective friction surfaces. A first friction member (12) is secured to the carrier structure (8) and a second friction member (13) is secured to a cage (14) for housing rolling members (15) carried by the transmission shaft (5). The cage is itself engaged on the transmission shaft (5) to accompany it in its movement in angular deflection (B).
    Type: Application
    Filed: June 6, 2013
    Publication date: January 2, 2014
    Inventors: Romain Nevers, Leo Trierweiler, Francois Malburet