Patents by Inventor Yves Angel

Yves Angel 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).

  • Magnetic detection means for sensing mobile ferromagnetic masses including pulse shaper circuit for generating a single pulse output
    Patent number: 3944912
    Abstract: A device for detecting mobile ferromagnetic masses, notably of vehicles, comprising a magnetometric pick-up element of the type with orthogonal fields. The pick-up element is a ferrite tube of small dimensions which is provided with a toroidal pump winding and a solenoid signal winding. The output of the processing and amplifying device for the signal of the pick-up element is fed back to the solenoid winding via a circuit comprising a low-pass filter and a symmetrical current amplifier. A pulseshaper for the amplified signal supplied by the pick-up element comprises phase-shifting circuits, so that a single squarewave pulse can be obtained upon the passage of a metallic mass.
    Type: Grant
    Filed: January 11, 1973
    Date of Patent: March 16, 1976
    Assignee: U.S. Philips Corporation
    Inventors: Yves Angel, Duc Mai Van Duc