Patents by Inventor Eric Laguna

Eric Laguna 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).

  • Transmission decoupling device
    Patent number: 6716129
    Abstract: A vehicle transmission, for example a CVT transmission, is provided with a decoupling device between an engine output shaft and a vehicle driveline. The decoupling device in one embodiment includes a clutch assembly which is fixed to a shaft coupled to the transmission output and engageable with a driveline through a piston arrangement. The piston can be urged against the force of a spring by fluid pressure to cause engagement of the clutches of the clutch assembly and thereby to couple engine torque to the vehicle driveline. When fluid pressure is released, the spring urges the piston to a position in which the clutches of the clutch assembly are disengaged, so as to disengage the engine output from the vehicle driveline. In the disengaged state, the vehicle can be towed.
    Type: Grant
    Filed: October 18, 2001
    Date of Patent: April 6, 2004
    Assignee: General Motors Corporation
    Inventors: Francois Bott, Yves Lauber, Eric Laguna, Pascal Marques-Bras, Marc Andres, Jean-Daniel Kiefer
  • Transmission decoupling device
    Publication number: 20020091036
    Abstract: A vehicle transmission, for example a CVT transmission, is provided with a decoupling device between an engine output shaft and a vehicle driveline. The decoupling device in one embodiment includes a clutch assembly which is fixed to a shaft coupled to the transmission output and engageable with a driveline through a piston arrangement. The piston can be urged against the force of a spring by fluid pressure to cause engagement of the clutches of the clutch assembly and thereby to couple engine torque to the vehicle driveline. When fluid pressure is released, the spring urges the piston to a position in which the clutches of the clutch assembly are disengaged, so as to disengage the engine output from the vehicle driveline. In the disengaged state, the vehicle can be towed.
    Type: Application
    Filed: October 18, 2001
    Publication date: July 11, 2002
    Inventors: Francois Bott, Yves Lauber, Eric Laguna, Pascal Marques-Bras, Marc Andres, Jean-Daniel Kiefer