Patents by Inventor Andrew C. Welker

Andrew C. Welker 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).

  • Patent number: 6996243
    Abstract: The loudspeaker and method provide a driver of a loudspeaker that is movable parallel to an axis of movement through a center of the driver to produce sound waves. The driver is aligned with the driver plane orthogonal to the axis of movement. The driver plane is at a non-zero acute angle to a support plane. A reflector is mounted facing a diaphragm of the driver for reflecting sound waves from the driver. The reflector is configured relative to the driver such that reflected sound energy is greatest in a selected direction from a front of the reflector and the driver, and diminishes a progressively larger angle from the selected direction. The selected direction diverges from the driver plane.
    Type: Grant
    Filed: March 4, 2003
    Date of Patent: February 7, 2006
    Assignee: Audio Products International Corp.
    Inventors: Andrew C. Welker, John Tchilinguirian
  • Publication number: 20040231911
    Abstract: A loudspeaker with a sealed enclosure having an active driver and a passive radiator mounted thereon is disclosed. The passive radiator is mounted essentially centrally in a passive radiator aperture and is held in place by a suspension which permits it to move in only a substantially linear direction. The enclosure and diaphragm are formed together in an injection molding process and the suspension is then co-molded between the diaphragm and enclosure. The loudspeaker has a mounting bracket that permits it be locked in a selected rotated position relative to the bracket. The active driver may be provided with a reflector to produce an omni-polar, or omni-directional, sound pattern.
    Type: Application
    Filed: April 5, 2004
    Publication date: November 25, 2004
    Inventors: Andrew C. Welker, John Tchilinguirian
  • Publication number: 20030179899
    Abstract: The loudspeaker and method provide a driver of a loudspeaker that is movable parallel to a direction of movement to produce sound waves. A reflector is mounted in front of a diaphragm of the driver for reflecting sound waves from the driver. The direction of movement is at a non-zero acute angle to the horizontal or to an external support plane that supports the loudspeaker.
    Type: Application
    Filed: March 4, 2003
    Publication date: September 25, 2003
    Applicant: Audio Products International Corp
    Inventors: Andrew C. Welker, John Tchilinguirian
  • Patent number: D484492
    Type: Grant
    Filed: February 5, 2003
    Date of Patent: December 30, 2003
    Assignee: Audio Products International Corp.
    Inventors: Andrew C. Welker, John Tchilinguirian