Patents by Inventor Pascal Le Yaouanq

Pascal Le Yaouanq 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).

  • Drive mechanism for driving displacement members disposed in tandem
    Patent number: 6036611
    Abstract: A drive mechanism (10, 110) for driving first and second displacement members (12, 14, 112, 114) disposed in tandem. The mechanism includes first and second driven sprockets (16, 18; 116, 118) for respective ones of the displacement members, a hydraulic motor (20; 120), and first and second driving sprockets (22, 24; 122, 124) disposed on the casing of the hydraulic motor so as to be rotated thereby. The mechanism also includes first and second chains (26, 28; 126, 128) disposed in a chain case (30; 130), each chain being engaged on a respective driven sprocket and on a respective driving sprocket. The hydraulic motor (20, 120) is a low-speed high-torque motor, having radial cylinders and a rotary casing. The motor is substantially contained in the chain case (30; 130).
    Type: Grant
    Filed: June 8, 1998
    Date of Patent: March 14, 2000
    Assignee: Poclain Hydraulics Industrie
    Inventors: Louis Bigo, Pascal Le Yaouanq, Jean-Noel Pogneau, Gilbert Mahe, Vincent Siquier, Jean-Claude Lallier, Dany Leturque