Patents by Inventor Jacques Mahul

Jacques Mahul 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).

  • Acoustic transducer made of pure beryllium with directed radiation, with a concave-shaped diaphragm, for audio applications, in particular for acoustic enclosures
    Patent number: 7878297
    Abstract: A loudspeaker for acoustic enclosure, in particular a tweeter or a medium-frequency loudspeaker, which consists of a spherical diaphragm with direct radiation, with a front side that is concave in relation to the spool, and onto which is attached at a certain level, for example at mid-height or approximately at mid-height, the moving spool so as to achieve an optimal mechanical coupling capable of reproducing frequencies lower than 1 kHz with a high efficiency. Material such as pure beryllium or a Be/Al alloy or similar alloys is used to make the diaphragm. Loudspeakers of the tweeter or medium type, especially for very high-fidelity acoustic enclosures.
    Type: Grant
    Filed: February 4, 2009
    Date of Patent: February 1, 2011
    Assignee: Focal-JMLAB (S.A.)
    Inventors: Dominc Baker, Jacques Mahul
  • Acoustic transducer made of pure beryllium with directed radiation, with a concave-shaped diaphragm, for audio applications, in particular for acoustic enclosures
    Publication number: 20090200101
    Abstract: A loudspeaker for acoustic enclosure, in particular a tweeter or a medium-frequency loudspeaker, which consists of a spherical diaphragm with direct radiation, with a front side that is concave in relation to the spool, and onto which is attached at a certain level, for example at mid-height or approximately at mid-height, the moving spool so as to achieve an optimal mechanical coupling capable of reproducing frequencies lower than 1 kHz with a high efficiency. Material such as pure beryllium or a Be/Al alloy or similar alloys is used to make the diaphragm. Loudspeakers of the tweeter or medium type, especially for very high-fidelity acoustic enclosures.
    Type: Application
    Filed: February 4, 2009
    Publication date: August 13, 2009
    Applicant: FOCAL-JMLAB (S.A.)
    Inventors: Dominc Baker, Jacques Mahul
  • Direct radiation pure beryllium acoustic transducer having a concave membrane , used for audio applications, especially for loudspeaker cabinets
    Publication number: 20060113144
    Abstract: A loudspeaker for acoustic enclosure, in particular a tweeter or a medium-frequency loudspeaker, which consists of a spherical diaphragm with direct radiation, with a front side that is concave in relation to the spool, and onto which is attached at a certain level, for example at mid-height or approximately at mid-height, the moving spool so as to achieve an optimal mechanical coupling capable of reproducing frequencies lower than 1 kHz with a high efficiency. Material such as pure beryllium or a Be/Al alloy or similar alloys is used to make the diaphragm. Loudspeakers of the tweeter or medium type, especially for very high-fidelity acoustic enclosures.
    Type: Application
    Filed: March 22, 2004
    Publication date: June 1, 2006
    Applicant: FOCAL-JMLAB (S.A.)
    Inventors: Dominic Baker, Jacques Mahul