Fluid coupling conduit with exhaust gas noise reduction
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United States of America Patent
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-
Jan 26, 2016
Grant Date -
Aug 8, 2013
app pub date -
Oct 17, 2011
filing date -
Oct 22, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A fluid coupling conduit (6, 50, 70, 104, 134) includes an inlet end (28, 52, 76, 110, 140) structured to receive a flow of breathing gas, an outlet end (32, 56, 78, 112, 142) fluidly coupled to the inlet end and defining an outlet opening, a central chamber portion (36, 60, 80, 124, 145) positioned between the inlet end and the outlet end, the central chamber portion having an outer wall (38, 62, 82, 116, 146) positioned opposite the outlet opening. The outer wall has a plurality of exhaust gas orifices (40, 64, 84, 118, 148) extending therethrough. A number of sound attenuating structures are disposed in the central chamber portion between the outlet opening and the outer wall. The sound attenuating structures including a plurality of surfaces structured to reflect sound waves associated with exhaust gas flow through the fluid coupling conduit.
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