Patents by Inventor William O. Doering

William O. Doering 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).

  • Ultra low frequency transducer and loud speaker comprising same
    Patent number: 7916890
    Abstract: An ultra low frequency transducer or subwoofer for automotive speaker systems with a rectangular or square or otherwise polygonal diaphragm. The basket of the transducer has a correspondingly polygonal front, which preferably is sized to be substantially coextensive with the front of the speaker housing or cabinet. In this way, air displacement in the subwoofer is maximized for a given size of enclosure, and thus so is the loudness of the speaker. The preferred diaphragm is concave, and the transducer preferably includes a convex surround with pleated corners. For increased durability, trusses are formed in the diaphragm.
    Type: Grant
    Filed: April 1, 2003
    Date of Patent: March 29, 2011
    Assignee: Stillwater Designs and Audio, Inc.
    Inventors: Steven M. Irby, William O. Doering
  • Ultra low frequency transducer and loud speaker comprising same
    Publication number: 20030194104
    Abstract: An ultra low frequency transducer or subwoofer for automotive speaker systems with a rectangular or square, concave diaphragm. The square periphery preferably is sized to be substantially coextensive with the front of the speaker housing or cabinet. In this way, air displacement in the subwoofer is maximized for a given size of enclosure, and thus so is the loudness of the speaker. The transducer typically includes a frame or basket with a square front for supporting the periphery of the diaphragm. The preferred diaphragm includes a convex surround with pleated corners. For increased durability, trusses are formed in the diaphragm.
    Type: Application
    Filed: April 1, 2003
    Publication date: October 16, 2003
    Applicant: Stillwater Designs & Audio, Inc.
    Inventors: Steven M. Irby, William O. Doering
  • Ultra low frequency transducer and loud speaker comprising same
    Patent number: 6611604
    Abstract: An ultra low frequency transducer or subwoofer for automotive speaker systems with a rectangular or square, concave diaphragm. The square periphery preferably is sized to be substantially coextensive with the front of the speaker housing or cabinet. In this way, air displacement in the subwoofer is maximized for a given size of enclosure, and thus so is the loudness of the speaker. The transducer typically includes a frame or basket with a square front for supporting the periphery of the diaphragm. The preferred diaphragm includes a convex surround with pleated corners. For increased durability, trusses are formed in the diaphragm.
    Type: Grant
    Filed: July 5, 2000
    Date of Patent: August 26, 2003
    Assignee: Stillwater Designs & Audio, Inc.
    Inventors: Steven M. Irby, William O. Doering
  • Speaker grill
    Patent number: D449293
    Type: Grant
    Filed: February 23, 2001
    Date of Patent: October 16, 2001
    Assignee: Stillwater Designs & Audio, Inc.
    Inventors: Steven M. Irby, William O. Doering
  • Subwoofer basket
    Patent number: D456386
    Type: Grant
    Filed: July 30, 1999
    Date of Patent: April 30, 2002
    Assignee: Stillwater Designs & Audio, Inc.
    Inventors: Steven M. Irby, William O. Doering
  • Subwoofer surround and diaphragm assembly
    Patent number: D473216
    Type: Grant
    Filed: February 11, 2002
    Date of Patent: April 15, 2003
    Assignee: Stillwater Designs & Audio, Inc.
    Inventors: Steven M. Irby, William O. Doering