Patents by Inventor Frederick J. K. Kwek

Frederick J. K. Kwek 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).

  • LOUDSPEAKER DRIVER AND LOUDSPEAKER ARRANGEMENT
    Publication number: 20120114148
    Abstract: A loudspeaker arrangement comprises a loudspeaker driver (201) mounted in an enclosure (203). The loudspeaker driver (201) comprises a speaker frame (209) which forms an outer support (221) and an inner support (213). An active radiator (205) is mounted on the inner support (213) and a passive radiator (207) is mounted between and on the inner support (213) and the outer support (221). The loudspeaker driver (201) may be mounted by the outer support (221) being fixed to the enclosure (203). The passive radiator (205) allows a low frequency extension for the loudspeaker driver (201). The integrated design of the active radiator 205 and passive radiator 207 allows the radiators (205, 207) to closely interact and behave as a single unit. The approach may reduce cost, facilitate manufacturing, improve audio quality and/or reduce vibrational stress on the enclosure.
    Type: Application
    Filed: May 3, 2010
    Publication date: May 10, 2012
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Gozali Goh Kong San, Frederick J. K. Kwek, Peng Gao