Pneumatic hand tool exhaust muffler
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United States of America Patent
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-
Jun 1, 1999
Issued Date -
N/A
app pub date -
May 19, 1998
filing date -
Jan 13, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A muffler (30) for quieting exhaust expelled from a pneumatic hand tool (10) having a handle (12), an air intake port, and an exhaust port. The muffler (30) includes an inner tube with a plurality of holes, a number of washers (36) positioned longitudinally about the inner tube (32) at the location of the plurality of holes, and an end cap for sealing off the inner tube. The inner tube is preferably formed as a spring. During use, exhaust air pass from the hand tool (10) into the inner tube, into the washers, through the washers, and out the muffler end cap. Alternative embodiments includes an outer tube.
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