Patents by Inventor Richard J. Vandersteen

Richard J. Vandersteen 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).

  • Coincident source stereo speaker
    Patent number: 7046816
    Abstract: A coincident source stereo speaker in accordance with the present invention includes a high-frequency component (tweeter) and a low-frequency component (woofer) that are separated by a sound channel. The tweeter emits a first sound pattern directly outward from the speaker, with the sound pattern having a corresponding high frequency center axis. The sound channel is located between the tweeter and woofer and is symmetrically oriented around the high-frequency component. The woofer emits a second sound pattern into the sound channel for re-direction out of the speaker. With this configuration, the second sound pattern has an effective low frequency center axis that is coincident with the high frequency center axis. As a result, the tweeter and woofer exhibit co-axial performance characteristics, even though they are not physically located co-axially.
    Type: Grant
    Filed: January 31, 2002
    Date of Patent: May 16, 2006
    Inventor: Richard J. Vandersteen
  • Coincident source stereo speaker
    Publication number: 20030053644
    Abstract: A coincident source stereo speaker in accordance with the present invention includes a high-frequency component (tweeter) and a low-frequency component (woofer) that are separated by a sound channel. The tweeter emits a first sound pattern directly outward from the speaker, with the sound pattern having a corresponding high frequency center axis. The sound channel is located between the tweeter and woofer and is symmetrically oriented around the high-frequency component. The woofer emits a second sound pattern into the sound channel for re-direction out of the speaker. With this configuration, the second sound pattern has an effective low frequency center axis that is coincident with the high frequency center axis. As a result, the tweeter and woofer exhibit co-axial performance characteristics, even though they are not physically located co-axially.
    Type: Application
    Filed: January 31, 2002
    Publication date: March 20, 2003
    Inventor: Richard J. Vandersteen
  • Midrange loudspeaker driver
    Patent number: 5073948
    Abstract: A midrange loudspeaker driver of the cone diaphragm and magnetic coil type having a reflection free zone immediately behind the diaphragm and within the driver to significantly reduce internal reflections of the diaphragm's rear waves resulting in improved clarity and transparency of sound.
    Type: Grant
    Filed: October 10, 1989
    Date of Patent: December 17, 1991
    Inventor: Richard J. Vandersteen