Air pulse noise damper for a pneumatic tool

Details Air pulse noise damper for a pneumatic tool Air pulse noise damper for a pneumatic tool

1976-03-01

1977-08-16

Franklin, Lawrence R.

Acoustics

Auditorium

173DIG2, 415119, 417312, 418181, F01N 120

Patent

active

040420620

ABSTRACT:
A pneumatic tool having an exhaust air noise attenuating system in which air exhausting from a rotary air vane motor is caused to pass in order through an exhaust port, past a flexible leaf damper overlying the exhaust port into a wave modulating chamber containing an air diffusion screen, and finally through ports exiting to atmosphere. The damper is illustrated in a first form as applied to the motor of an impact wrench; and is illustrated in a second embodiment as applied to a grinding tool.

REFERENCES:
patent: 2128742 (1938-08-01), Fuehrer
patent: 2643731 (1953-06-01), Schmid
patent: 3006160 (1961-10-01), Heidorn
patent: 3132716 (1964-05-01), Williams
patent: 3318412 (1967-05-01), Bailey

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