Acoustics – Sound-modifying means – Muffler – fluid conducting type
Reexamination Certificate
2010-03-10
2010-12-07
San Martin, Edgardo (Department: 2832)
Acoustics
Sound-modifying means
Muffler, fluid conducting type
C181S249000, C181S255000, C181S274000, C173SDIG002
Reexamination Certificate
active
07845464
ABSTRACT:
Noise-abatement devices are provided for a pneumatic tool that can include a housing having a first end and a second end. An expansion chamber is defined within the expansion chamber. At least one tube is located at least partially within the expansion chamber in which the tube has at least a perforated portion, and an outlet defined therein. The device also includes a port outlet in fluid communication with the expansion chamber in which the port outlet and the outlet are located near the second end of the housing.
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Murray William
Roberts Neil James
Longyear TM, Inc.
Martin Edgardo San
Workman Nydegger
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