Vacuum cleaner apparatus

Details Vacuum cleaner apparatus Vacuum cleaner apparatus

1986-01-08

1987-05-19

Moore, Chris K.

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

15413, 55276, 181231, 181252, 181256, 181272, 417312, A47L 900

Patent

active

046655816

ABSTRACT:
A vacuum cleaner apparatus having separate passages for outgoing air from the blower and for cooling air for the blower motor, and having a number of turns in each of said passages, each of said passages having a plurality of variations in cross-sectional area, the passages being provided with sound-absorbent linings.

REFERENCES:
patent: 1565932 (1925-12-01), Hanson
patent: 2884185 (1959-04-01), Dolan
patent: 4185354 (1980-01-01), Brazier
patent: 4195969 (1980-04-01), Whitney
patent: 4330899 (1982-05-01), Miller et al.
patent: 4435877 (1984-03-01), Berfield

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