Patents by Inventor Diogenes Perez Cuadro

Diogenes Perez Cuadro 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).

  • Hydraulic actuator for actuating a gas exchange valve of an internal combustion engine
    Patent number: 6886509
    Abstract: The invention relates to a hydraulic actuator for actuating a gas exchange valve (1) of an internal combustion engine, which valve is especially closed by the effect of a spring. The actuator is configured by a feed pump (6) with intermittent and thus variable delivery. The feed pump (6) has a high frequency and can be equipped for this purpose with piezoelectric, magnetorestrictive and/or electrochemical actuators as the feed elements. Optionally, the feed pump (6) can be operated with a stop valve (7) that is disposed downstream of the gas exchange valve (1) and that is controlled or regulated depending on the feed pump.
    Type: Grant
    Filed: March 16, 2002
    Date of Patent: May 3, 2005
    Assignee: Mahle Ventiltrieb GmbH
    Inventor: Diogenes Perez Cuadro
  • Hydraulic actuator for actuating a gas exchange valve of an internal combusition engine
    Publication number: 20040094104
    Abstract: The invention relates to a hydraulic actuator for actuating a gas exchange valve (1) of an internal combustion engine, which valve is especially closed by the effect of a spring. Said actuator is configured by a feed pump (6) with intermittent and thus variable delivery. Said feed pump (6) has a high frequency and can be equipped for this purpose with piezoelectric, magnetorestrictive and/or electrochemical actuators as the feed elements. Optionally, the feed pump (6) can be operated with a stop valve (7) that is disposed downstream of the gas exchange valve (1) and that is controlled or regulated depending on the feed pump.
    Type: Application
    Filed: March 5, 2003
    Publication date: May 20, 2004
    Inventor: Diogenes Perez Cuadro