Acoustics – Sound-modifying means – Muffler – fluid conducting type
Patent
1997-04-18
1998-11-24
Dang, Khanh
Acoustics
Sound-modifying means
Muffler, fluid conducting type
181230, 415119, F01N 700, F04D 2966
Patent
active
058410805
ABSTRACT:
A working machine such as a power blower has a blower pipe with a silencer. The blower pipe has an outer pipe and a perforated inner pipe, with a sound absorbing material disposed between the inner and outer pipes. For ease of handling in use of the power blower, the outer pipe has substantially constant diameter. For ease of storage, the pipe is detachable.
REFERENCES:
patent: 4508486 (1985-04-01), Tinker
patent: 4692091 (1987-09-01), Ritenouor
patent: 4828175 (1989-05-01), Heufler et al.
Japanese Utility Model Publication No. 5-14000, pp. 417-422, Apr. 14, 1993.
Arahata Kouji
Iida Giichi
Yoshioka Tetsuya
Dang Khanh
Kioritz & Corporation
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