Noise suppressor for vacuum sweepers and the like

Details Noise suppressor for vacuum sweepers and the like Noise suppressor for vacuum sweepers and the like

1981-12-07

1983-12-06

Moore, Chris K.

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

55276, 55379, 181231, 181250, 417312, A47L 900

Patent

active

044184433

ABSTRACT:
A noise suppressor for vacuum cleaners is characterized by a muffler formed of a succession of tubes of different cross sectional areas and lengths. The muffler defines a low pass acoustic filter, and is connected in line with an exhaust outlet from the vacuum cleaner. Preferably, the muffler is used in place of a sleeve conventionally found in a filter bag for the vacuum cleaner, and thereby acts as a stand pipe to maintain the inlet to the filter bag above collected debris so that the inlet is not choked off with debris before the bag is filled.

REFERENCES:
patent: 1874326 (1932-08-01), Mason
patent: 2125850 (1938-08-01), Norris
patent: 2342905 (1944-02-01), Smellie
patent: 2730188 (1956-01-01), Bailey
patent: 2903085 (1959-08-01), Miller
patent: 3790986 (1974-02-01), Burger
patent: 4315558 (1982-02-01), Katayama

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