Patents by Inventor Michel Sagnet

Michel Sagnet 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).

  • Multiple piston engine with vibration reducing properties
    Patent number: 6814548
    Abstract: The invention relates to a piston engine which is essentially comprised of an engine shaft and a set of modules, each of which comprises a cylinder and a piston powered by the engine shaft in the cylinder, each module resulting in vibratory excitation of the engine at a determined fundamental frequency. Rather than introducing phase differences between the various vibratory excitations, as is the case in prior art, the invention introduces a frequency offset between the fundamental frequencies thereof in order to avoid a high-amplitude vibration at a common excitation frequency, arising from the spectral spread thus obtained.
    Type: Grant
    Filed: October 3, 2002
    Date of Patent: November 9, 2004
    Assignee: Peugeot Citroen Automobiles S.A.
    Inventor: Michel Sagnet
  • Multi-piston engine, such as a pump or compressor, with improved vibrational behaviour
    Publication number: 20030059314
    Abstract: The invention relates to a piston engine which is essentially comprised of an engine shaft (1) and a set of modules, each of which comprises a cylinder (2a, 2b) and a piston (3a, 3b) powered by the engine shaft in the cylinder, each module resulting in vibratory excitation of the engine at a determined fundamental frequency (Fa, Fb). Rather than introducing phase differences between the various vibratory excitations, as is the case in prior art, the invention introduces a frequency offset (&Dgr;Fab) between the fundamental frequencies (Fa, Fb) thereof in order to avoid a high-amplitude vibration at a common excitation frequency (F), arising from the spectral spread thus obtained.
    Type: Application
    Filed: October 3, 2002
    Publication date: March 27, 2003
    Inventor: Michel Sagnet