Patents by Inventor Andre Legros

Andre Legros 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: 4408785
    Abstract: A system for filtering vibrations from an internal combustion engine towards an exhaust pipe wherein an interruption is arranged on the latter and as close as possible to the source of the vibrations, the ends of the pipe facing the level of the interruption having the shape of a spherical area, a composite joint between these ends being then re-established via a first internal, cylindrical element with beveled ends fitting together within the preceding areas and a second external element supported by the central part of the latter while its ends hold tightness segments against the upper part of the spherical areas, at least one space being provided between these two elements allowing the placement of a ring, two envelopes being in addition crimped onto the widened ends of the second element supported on the spherical areas, thus holding the composite joint in place.
    Type: Grant
    Filed: June 24, 1981
    Date of Patent: October 11, 1983
    Assignee: Regie Nationale des Usines Renault
    Inventors: Andre Legros, Andre Chalesle
  • Patent number: 4018203
    Abstract: A decompressing device for facilitating starting of internal combustion engines, by lifting one of the engine valves at the beginning of the compression cycle, comprises a lever which is movable, by hydraulic pressure developed by an engine-driven oil pump, from an extended position in which one end of the lever effects said valve lifting to a retracted position. Lifting of the valve therefore stops when the engine speed (and hence the hydraulic pressure) reaches a predetermined level. The lever is moved between the extended and retracted positions by piston means located in a bore in the engine camshaft, the piston means being acted upon in one direction by the hydraulic pressure, and in the opposite direction by resilient means which tends to move the lever to the extended position.
    Type: Grant
    Filed: January 9, 1976
    Date of Patent: April 19, 1977
    Assignee: Bernard-Moteurs
    Inventor: Andre Legros