Muffler

Details Muffler Muffler

1996-08-01

1998-06-16

Moore, Chris K.

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

55276, 181256, A47L 900

Patent

active

057652570

ABSTRACT:
An improved muffler for vacuum cleaners and other product applications is disclosed. The muffler includes a muffler body or enlarged head with a smaller hollow shaft extending from an open end of the muffler body or enlarged head for attachment to an exhaust of a vacuum cleaner or other application. The smaller hollow shaft terminates short of a transverse end wall of the muffler body. The transverse end wall may be constructed as a separate cover element. A noise dampening element is positioned adjacent the transverse end wall and also along an inner circumferential wall of the muffler body in order to dampen noise transmitted from the vacuum cleaner exhaust that passes through the smaller hollow shaft into the muffler body for absorption by the noise dampening element prior to being diverted by the transverse end wall in an opposite direction through the open end of the muffler body.

REFERENCES:
patent: 3971096 (1976-07-01), Renholt
patent: 4015683 (1977-04-01), Williams
patent: 4120616 (1978-10-01), Dwyer et al.
patent: 4195969 (1980-04-01), Whitney
patent: 4280245 (1981-07-01), Hiester
patent: 4356591 (1982-11-01), Lude
patent: 4418443 (1983-12-01), Fischer
patent: 4435877 (1984-03-01), Berfield
patent: 4665581 (1987-05-01), Oberdorfer
patent: 4970753 (1990-11-01), Herron

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