Air blower assembly for vacuum cleaners

Details Air blower assembly for vacuum cleaners Air blower assembly for vacuum cleaners

A - Human Necessities

47

L

15/57

A47L 9/00 (2006.01) A47L 9/22 (2006.01) F04D 17/16 (2006.01) F04D 29/62 (2006.01)

Patent

CA 1276416

ABSTRACT OF THE DISCLOSURE A improved blower assembly particularly useful for liquid bath type vacuum cleaners is disclosed. The improved blower assembly features enhanced noise attenuation achieved by providing a four-stage noise reduction system featuring a serpentine airflow path at the blower assembly air inlet and outlet. The four stages of the noise reduction system air comprised of; a noise reduction stage housing, a lower stage assembly, an upper stage assembly, and a motor base, respectively. Improvements in the production assembly techniques of the blower assembly components are further provided through a modified upper stage assembly which is assembled to a motor base component by a partial turn and lock procedure so that the components become firmly locked together and accurately positioned. This production technique can be accomplished quickly without a requirement of a high degree of operator skill.

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