Patents by Inventor Dennis R. Kirchhoefer

Dennis R. Kirchhoefer 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).

  • Shock resistant coil and receiver
    Patent number: 9485585
    Abstract: A motor includes an armature, a coil, and a magnetic support structure. The motor also includes at least one magnet that defines a space. The coil forms a tunnel. The space is defined by the at least one magnet being aligned with the tunnel formed by the coil. Portions of the armature extend through the space and the tunnel. An opening at an end of the coil is shaped so as to restrict movement of the armature.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: November 1, 2016
    Assignee: KNOWLES ELECTRONICS, LLC
    Inventors: Michael McCratic, Matthew Mason, Ryan Grounds, Dennis R. Kirchhoefer, Thomas E. Miller, Henry G. Nepomuceno, Shehab Albahri
  • Microphone Circuit And Motor Assembly
    Publication number: 20150181349
    Abstract: An acoustic motor assembly includes a substrate with a diaphragm ring that is integrally formed with the substrate. The diaphragm ring forms an opening extending through the substrate. The assembly also includes an electrically charged plate extending over the opening; a diaphragm extending over the opening and vertically displaced from the electrically charged plate; and a stitch coupling the electrically charged plate to the diaphragm. Sound energy creates a movement of the diaphragm, and the movement is effective to create an electrical signal representative of the sound energy.
    Type: Application
    Filed: December 15, 2014
    Publication date: June 25, 2015
    Inventors: George Patterson, JR., Dennis R. Kirchhoefer, Janice LoPresti, Felix Naylor
  • Shock Resistant Coil And Receiver
    Publication number: 20150110338
    Abstract: A motor includes an armature, a coil, and a magnetic support structure. The motor also includes at least one magnet that defines a space. The coil forms a tunnel. The space is defined by the at least one magnet being aligned with the tunnel formed by the coil. Portions of the armature extend through the space and the tunnel. An opening at an end of the coil is shaped so as to restrict movement of the armature.
    Type: Application
    Filed: October 8, 2014
    Publication date: April 23, 2015
    Inventors: Michael McCratic, Matthew Mason, Ryan Grounds, Dennis R. Kirchhoefer, Thomas E. Miller, Henry G. Nepomuceno, Shehab Albahri
  • Conjoined receiver and microphone assembly
    Patent number: 7747032
    Abstract: A transducer assembly may include a first transducer having a first front volume, a first back volume and a first port acoustically coupled to the first front volume; and a second transducer having a second front volume, a second back volume and second port acoustically coupled to the second front volume. The first front volume and the second front volume are acoustically coupled to increase the effective back volume of both the first transducer and the second transducer. An optional signal processing circuit may be used to control the output of the first transducer based upon a signal received from the second transducer.
    Type: Grant
    Filed: May 9, 2006
    Date of Patent: June 29, 2010
    Assignee: Knowles Electronics, LLC
    Inventors: John Zei, Dennis R. Kirchhoefer, Evan Llamas-Young