Acoustics – Sound-modifying means – Muffler – fluid conducting type
Reexamination Certificate
2008-05-28
2010-06-15
San Martin, Edgardo (Department: 2832)
Acoustics
Sound-modifying means
Muffler, fluid conducting type
C181S274000
Reexamination Certificate
active
07735603
ABSTRACT:
A noise reducing device includes a housing defining an expansion chamber therein and having a longitudinal axis along the length of the expansion chamber and a tool port in fluid communication with the expansion chamber, the tool port being oriented transversely relative to the longitudinal axis so as to cause fluid directed from the tool port to the expansion chamber to whirl about the expansion chamber.
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Longyear TM, Inc.
Martin Edgardo San
Workman Nydegger
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