Low cost replaceable type sound dampening unit for vacuum cleani

Details Low cost replaceable type sound dampening unit for vacuum cleani Low cost replaceable type sound dampening unit for vacuum cleani

1990-04-25

1991-11-26

Brown, Brian W.

Acoustics

Sound-modifying means

Muffler, fluid conducting type

181282, F01N 302, F01N 306

Patent

active

050675842

ABSTRACT:
A physical shape-conformable, disposable, self-sustaining sound dampening unit adapted to attach to the air exhaust of a pair of electric motors to dampen the noise produced by the same, which comprises:

REFERENCES:
patent: 2152205 (1939-03-01), Morrison
patent: 3308608 (1967-03-01), Brimberg
patent: 3882961 (1975-05-01), Cannan et al.
patent: 4015683 (1977-04-01), Williams
patent: 4475264 (1984-10-01), Schulz
patent: 4665581 (1987-05-01), Oberdorfer

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