Patents by Inventor Jacques Guerin-Pinaud

Jacques Guerin-Pinaud 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).

  • Method and devices for detecting whether a direct-current motor has slowed-down and a motor equipped with a device of this type
    Patent number: 4580082
    Abstract: The direct-current motor comprises at least one field winding supplied intermittently with direct-current voltage in order to produce a driving torque by interaction with permanent-magnetic poles which rotate with respect to the winding. The electromotive force of induction produced in the winding by the relative rotation of the permanent-magnetic poles is detected by means of a voltage measurement during the time intervals which elapse when the winding is not energized. A low-speed signal is produced when the electromotive force is below a pre-established threshold in correlation with the desired speed-threshold value.
    Type: Grant
    Filed: April 15, 1985
    Date of Patent: April 1, 1986
    Assignee: Etudes Techniques et Representations Industrielles E.T.R.I.
    Inventor: Jacques Guerin-Pinaud