Muffled exhaust system for hot water vacuum extraction machine

Details Muffled exhaust system for hot water vacuum extraction machine Muffled exhaust system for hot water vacuum extraction machine

1981-07-01

1982-12-07

Moore, Chris K.

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

15413, 417312, A47L 900

Patent

active

043619282

ABSTRACT:
A unitary tubular exhaust duct directs exhaust air from a scroll type outlet for a vacuum pump mounted within a hot water vacuum extraction machine into a baffled exhaust expansion chamber. Noise reduction is accomplished by mixing the exhaust air with the motor cooling air aspirated into the expansion chamber by an exhaust duct branch terminating at its end remote from the exhaust expansion chamber in a cylindrical shroud which surrounds the vacuum pump electrical drive motor casing and the area of the cooling air exhaust holes within that motor casing.

REFERENCES:
patent: 2884185 (1959-04-01), Dolan
patent: 3831223 (1974-08-01), Colt et al.
patent: 4195969 (1980-04-01), Whitney
patent: 4288885 (1981-09-01), Parise
patent: 4330899 (1982-05-01), Miller et al.
patent: 4334337 (1982-06-01), Miller et al.

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