Drainage structure of a volute horn
AssigneeMitsuba Electric Manufacturing Co., Ltd.
InventorsHidefumi Takahashi, Akio Wakai
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Abstract
A drainage structure of a volute horn including a resonating device has a cover and a base which form a volute sound path. A relatively long and narrow drainage passageway is formed in the portion of the resonating device where water collects for draining water from the sound path such that the sound pressure in the sound path remains constant. As a result, the integrity of the horn sound is maintained.
Claims18
A volute horn comprising a resonating device having a volute sound path with a water collecting portion therein and a drainage structure communicating with said volute sound path at said water collecting portion, said drainage structure comprising a continuously open labyrinthine drainage passageway having a length and a diameter with a large length to diameter ratio in the range of 4 to 20, said passageway inhibiting a decrease in sound pressure in the volute sound path while enabling drainage of water during operation of said resonating device.
A horn having a resonating unit forming a sound path and a drainage structure communicating with said sound path, said drainage structure consisting of a continuously open non-linear, long, narrow drainage passageway, wherein said drainage structure releases water from said sound path while allowing pressure to be maintained in said sound path during operation of said resonating unit.
Dependencies are inferred from the claim text.