Sound dampening flow channel device

Details Sound dampening flow channel device Sound dampening flow channel device

2006-03-15

2011-11-22

Enad, Elvin G (Department: 2832)

Acoustics

Sound-modifying means

Muffler, fluid conducting type

C181S279000, C181S280000

Reexamination Certificate

active

08061476

ABSTRACT:
The invention presents a sound dampening flow channel device defining at least one flow channel having an inlet opening and an outlet opening, the flow channel being at least partly delimited by at least one acoustic energy dissipative wall. The outlet opening of the flow channel cannot be seen from the inlet opening and vice versa. Preferably, the acoustic energy dissipative wall presents, in relation to the interior of the flow channel, a smooth curvature.

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Russian Search Report (translation attached) dated Jan. 20, 2010 issued in Russian Application No. 2007134064/06(037217).
Chinese First Office Action (translation attached) mailed Mar. 11, 2010 issued in Chinese Application No. 200680008754.5.

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