Patents by Inventor Michel Perrot

Michel Perrot 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).

  • Publication number: 20200386017
    Abstract: An electronic push button for a motor vehicle door handle, including an activation pattern supported by a membrane that is flexible in the direction of an electric switch carried by a printed circuit board, the activation pattern defining an activation surface that is pressed by an operator's finger in order to push the activation pattern in the direction of the electric switch. The activation pattern is made up of a set of studs that extend parallel to one another away from the electric switch, with the majority of the studs being spaced apart from one another, the set of studs discontinuously delimiting an outer contour of the activation surface of the electronic push button.
    Type: Application
    Filed: April 10, 2018
    Publication date: December 10, 2020
    Inventors: Florian Brunet-Lugardon, Pascal Perrot, Michel Collet
  • Patent number: 6961220
    Abstract: In a video recorder with a rotary head drum, a lower drum (1) and drum base (2) are joined together by laser welding to simplify assembly and reduce manufacturing cost.
    Type: Grant
    Filed: February 22, 2002
    Date of Patent: November 1, 2005
    Assignee: Thomson Licensing
    Inventors: Philippe Berthaud, Michel Perrot
  • Patent number: 6922315
    Abstract: According to a first aspect the present invention is related to a head drum arrangement allowing a much easier mounting of the rotary transformer. The head drum arrangement comprises a non-rotating lower drum and a rotating upper drum, which are connected by a shaft fixed in the lower drum. The upper drum is mounted on the shaft by a bearing and preferably by two ball bearings. A rotary transformer is arranged between the lower drum and the upper drum having a fixed stator and a rotor rotating jointly with the upper drum. The rotor is non-positively held in its position by the magnetic force of a permanent magnet accommodated in the upper drum.
    Type: Grant
    Filed: December 15, 2001
    Date of Patent: July 26, 2005
    Assignee: Thomson Licensing S.A.
    Inventors: Philippe Berthaud, Jean-Pierre Collin, Michel Perrot
  • Publication number: 20040130829
    Abstract: According to a first aspect the present invention is related to a head drum arrangement allowing a much easier gap adjustment of the rotary transformer. The head drum arrangement comprises a non-rotating lower drum and a rotating upper drum, which are connected by a shaft fixed in the lower drum. The upper drum is mounted on the shaft by a bearing and preferably by two ball bearings. A rotary transformer is arranged between the lower drum and the upper drum having a fixed stator and a rotor rotating jointly with the upper drum. The stator and the rotor are separated by an air gap. Finally, a compressible, elastic spring is arranged between the lower drum and the upper drum, such that the length of the spring defines the air gap between the stator and the rotor of the rotary transformer. Advantageously, the invention allows defining the air gap of the rotary transformer without requiring additional members like washers, spacers or something similar.
    Type: Application
    Filed: February 12, 2004
    Publication date: July 8, 2004
    Inventors: Philippe Berthaud, Michel Perrot
  • Publication number: 20020122277
    Abstract: As is well known from video recorders, the rotary drum comprises a rotary part (upper drum) and a stationary part (lower drum), and forms a drum unit with a drum base (2) by means of which the drum is being arranged with a tilt angle with respect to the plane of recorder's tape deck chassis.
    Type: Application
    Filed: February 22, 2002
    Publication date: September 5, 2002
    Inventors: Philippe Berthaud, Michel Perrot
  • Patent number: 4943691
    Abstract: A current limiter comprises an extinguishing chamber 16 of small volume, in which there are housed a pair of contacts 28, 30 and an insulating shield 40, capable of moving to an active position inserted between the contacts 28, 30, and of subdividing the chamber 16 into two parts each of which contains one of the contacts 28, 30. The movement of the insulating shield 40 to the inserted position between the contacts 28, 30 is favored by the action of a piston 48 subjected to the pressure prevailing in the extinguishing chamber 16.
    Type: Grant
    Filed: June 12, 1989
    Date of Patent: July 24, 1990
    Assignee: Merlin Gerin
    Inventors: Jean-Luc Mertz, Hubert Guerin, Michel Perrot, Patrick De Robertis
  • Patent number: 4518569
    Abstract: A physico-chemical cleaning process for the inner walls of a reactor which serves to maintain these walls in a state close to their main initial characteristics necessitated by a fluorination reaction, said characteristics being degraded by the deposition of a parasitic phase during the reaction, said initial characteristics being maintained by the use of a protective agent belonging to the group constituted by at least one of the reagents, a product resulting from the reaction, a product foreign to the reaction, but compatible with the substances of the main reaction or by the reaction of a third substance with at least one of the reaction substances or a mixture thereof, forming a renewable protective film on the said walls. The protective agent can be deposited by condensation on the walls before, during or after the main reaction, and then vaporized. The protective agent can be in liquid form, and trickling along the walls.
    Type: Grant
    Filed: March 18, 1980
    Date of Patent: May 21, 1985
    Assignee: Pechine Ugine Kuhlmann
    Inventors: Michel Perrot, Michel Jaccaud