Patents by Inventor Jean-Michel Lachenal

Jean-Michel Lachenal 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 actuating an automatic device comprising a plurality of combined mobile members
    Patent number: 4587103
    Abstract: The present invention relates to a device for actuating an automatic device comprising a plurality of combined mobile members, wherein this device comprises an electric motor actuating a hydraulic master jack which in turn actuates a plurality of hydraulic slave jacks connected to said mobile members.
    Type: Grant
    Filed: October 4, 1984
    Date of Patent: May 6, 1986
    Assignee: Le Materiel Biomedical
    Inventors: Alain C. A. Benajam, Jean-Michel Lachenal
  • Composite guide roller for a rolling mill
    Patent number: 4056873
    Abstract: The invention relates to a guide roller for hot-rolling mills for long metallurgical products and to the method by which it is made. The roller consists of a hollow core and an annular ring mounted on the core. The core is generally fabricated from soft metals, such as aluminum or magnesium and alloys thereof readily worked by conventional forming techniques while the ring consists of a hard refractory material, such as a metallic carbide, nitride, carbonitride or boride or a ceramic based on metal oxides.
    Type: Grant
    Filed: December 13, 1976
    Date of Patent: November 8, 1977
    Assignee: Ugine Carbone
    Inventors: Jacques Cassard, Jean-Michel Lachenal, Gerard Romagnolo
  • Control device for a fluidic-control jack
    Patent number: 3968735
    Abstract: The ends of travel of pneumatic jacks are controlled so as to obtain signals which are directly utilizable in fluidics by means of a device comprising a main jack-piston with a hollow operating stem fitted with a plunger and a positionally-adjustable regulating stem, a main cylinder and auxiliary cylinder having control ports for driving fluid and communicating with stationary fluidic control ports, and adjustable fluidic control means actuated in dependence on the position of the regulating stem with respect to a cylindrical slide-valve.
    Type: Grant
    Filed: March 8, 1974
    Date of Patent: July 13, 1976
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Gilbert Boisde, Paul Cogez, Jean-Michel Lachenal, Michel Lamare