Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Yasuo Shiozawa0
Hirofumi Onitsuka0
Date of Patent
May 20, 2014
0Patent Application Number
130339860
Date Filed
February 24, 2011
0Patent Citations Received
Patent Primary Examiner
Patent abstract
In a bass reflex type speaker, a Helmholtz resonator is formed by a bass reflex port and a space within a speaker enclosure excluding the bass reflex port and a speaker unit. The bass reflex port of the bass reflex type speaker is movable toward and away from a side surface while maintaining its projecting direction within the speaker enclosure. In response to such movement of the bass reflex port, relative positional relationship between a neck and cavity of the bass reflex type speaker varies.
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