Acoustic Patents
By James Croft (Croft Acoustical)
T
he following loudspeaker-related patent was filed
primarily under the Office of Patent and Trademarks
classification 181 for acoustical devices, 381 for electrical-signal processing systems, and HO4R for international patents. This includes new patent applications
that are published in the Patent Application Journal.
SPEAKER SYSTEM WITH SUBWOOFER
Patent Number: US 8,428,291
Inventors: Shi-Quan Lin (Shenzhen, CN), Te-Hua Lee
(Taipei Hsien, TW)
Assignee: Hong Fu Jin Precision Industry (Shenzhen)
Co., Ltd. (Shenzhen, CN)
Hon Hai Precision Industry Co., Ltd. (New Taipei, TW)
Filed: June 23, 2010
US Classes: 381/388
Granted: April 23, 2013
Number of Claims: 18
Number of Drawings: 4
Abstract From Patent
A speaker system includes an enclosure defining a
resonance chamber, a loudspeaker received in the resonance chamber, and a sound wave reflecting member
(see Figure 1). The enclosure includes a front panel
10
VOICE COIL
Figure 1: The speaker system described in US Patent 8,428,291
includes an enclosure with a resonance chamber.
and a base. The loudspeaker is exposed at the front
panel. The base includes a back panel facing the front
panel, an inner tube, and an outer tube. The back panel
defines a back bass port. The inner tube and the outer
tube extend from the back panel and are received in the
resonance chamber. The inner tube surrounds the back
bass port. The outer tube surrounds the inner tube. The
sound wave reflecting member is coupled with the outer
