Acoustic filter

Details Acoustic filter Acoustic filter

1987-05-27

1988-09-06

Fuller, B. R.

Acoustics

Sound-modifying means

Muffler, fluid conducting type

181212, 181230, 181252, 181255, F01N 120, F16L 5502

Patent

active

047686162

ABSTRACT:
An acoustic filter adapted to be fitted on a pipe for the purpose of absorbing pressure waves. The acoustic filter has a body constituted by a cylinder, an inlet and outlet end, a locking ring fitted in a groove located at the inlet and outlet ends, coupling means within the locking rings for coupling the filter to a pipe. A holder tube fitted with diffuser rings for connecting the coupling means. A deformable bag made from a flexible material is mounted between the inlet and outlet ends, shaped like a cylindrical sleeve and surrounds the holder tube and diffuser rings. The bag defines with an inner wall of the cylinder a chamber for receiving a pressurized gas.

REFERENCES:
patent: 3165166 (1965-01-01), Hall
patent: 4497388 (1985-02-01), Dexter

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