Patents by Inventor Daniel W. Shulte

Daniel W. Shulte 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: 5659157
    Abstract: A loudspeaker system has specific exterior dimensions and specific interior dimensional correlations which has at least a first electroacoustical transducer having a vibratable diaphragm for converting an input electrical signal into a corresponding acoustic output signal. A speaker enclosure is divided into at least first, second and third subchambers by at least first and second dividing walls. The first dividing wall supports and coacts with the first electrical transducer to bound the first and second subchambers. At least a first passive radiator intercouples the first and third subchambers. At least a second passive radiator intercouples at least one of the second and third subchambers with the region outside the enclosure. Each passive radiator is characterized by acoustic mass, and each subchamber is characterized by acoustic compliance.
    Type: Grant
    Filed: March 21, 1995
    Date of Patent: August 19, 1997
    Inventor: Daniel W. Shulte