Noise damper for air pressure operated tools

Details Noise damper for air pressure operated tools Noise damper for air pressure operated tools

1993-11-12

1995-07-11

Dang, Khanh

Acoustics

Sound-modifying means

Muffler, fluid conducting type

F01N 108

Patent

active

054323070

ABSTRACT:
Exhaust noise emitted by a pneumatically operated tool, such as a nailer, is damped by an external damping ring which surrounds the exhaust openings. Preferably, the damping ring is inserted into an outwardly open circumferential groove into which the exhaust openings of the tool housing merge. The ring is sufficiently elastic to permit the escape of the exhaust air, thereby damping the noise. The ring may be an elastic rubber or synthetic material ring (12) or it may be a tightly woven ring spring (12A).

REFERENCES:
patent: 2678637 (1954-05-01), Doeden
patent: 3783590 (1974-01-01), Allen
patent: 3809179 (1974-05-01), Delaney, Jr. et al.
patent: 4113052 (1978-09-01), McElroy, Jr.
patent: 4320864 (1982-03-01), Novak et al.

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