Noise reducing means for vacuum cleaner

Details Noise reducing means for vacuum cleaner Noise reducing means for vacuum cleaner

1982-09-30

1984-03-13

Moore, Chris K.

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

55276, 181231, 417312, A47L 900

Patent

active

044358776

ABSTRACT:
A noise muffler for a vacuum cleaner is constructed of flexible open cell foam inserts, one of which extends across an opening through which working air flows between two plenums. At this opening the foam insert is provided with a plurality of relatively large perforations. Similar perforations may be provided at the ends of the other insert, this other insert being in the downstream plenum.

REFERENCES:
patent: 3609946 (1971-10-01), Nakagawa et al.
patent: 4195969 (1980-04-01), Whitney
patent: 4330899 (1982-05-01), Miller et al.
patent: 4356591 (1982-11-01), Lude

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