Pneumatic hand tool exhaust muffler

Details Pneumatic hand tool exhaust muffler Pneumatic hand tool exhaust muffler

1998-05-19

1999-06-01

Dang, Khanh

Acoustics

Sound-modifying means

Muffler, fluid conducting type

181258, 173DIG2, F01N 302

Patent

active

059090162

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.

REFERENCES:
patent: 4134472 (1979-01-01), Trainor
patent: 4184564 (1980-01-01), Trainor
patent: 4205732 (1980-06-01), Auerbach et al.
patent: 4258798 (1981-03-01), Campbell et al.
patent: 5500494 (1996-03-01), Ligman

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