Title:
MEGAPHONE
Document Type and Number:
WIPO Patent Application WO/2008/029491
Kind Code:
A1
Abstract:
[PROBLEMS] A megaphone which can amplify not only sound but also a striking sound
such as applause. [MEANS FOR SOLVING PROBLEMS] The megaphone is constituted
of an intermediate amplification tube having a substantially rectangular cross-section
and being continuously hollow from the proximal end side opening toward the distal
end side opening, two side amplification tubes each having a substantially semicircular
cross-section and arranged on the opposite sides of the intermediate amplification
tube while being continuously hollow from the proximal end side opening toward
the distal end side opening, and a grip tube having a substantially circular cross-section
and holding the intermediate amplification tube and the two side amplification
tubes on the proximal end sides thereof while being continuously hollow from
the proximal end side opening toward the distal end side opening.
Inventors:
ITAKURA, Hiromasa (18 Minamimachi Kunotsubo, Kitanagoya-shi Aichi, 41, 4810041, JP)
Application Number:
JP2006/320628
Publication Date:
March 13, 2008
Filing Date:
October 17, 2006
Export Citation:
Assignee:
ITAKURA, Hiromasa (18 Minamimachi Kunotsubo, Kitanagoya-shi Aichi, 41, 4810041, JP)
International Classes:
G10K11/08; G10D13/06
Attorney, Agent or Firm:
SUZUKI, Shoji et al. (Ohtakamico-Shinjuku Bldg, 9th Fl. 10-3, Shinjuku,1-chome, Shinjuku-ku, Tokyo 22, 1600022, JP)