Cleaning machine with sound suppression system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
N/A
Issued Date -
Nov 16, 2006
app pub date -
Nov 14, 2005
filing date -
Nov 12, 2004
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A cleaning machine with a sound suppression system may include a waste recovery tank and a centrifugal-bypass vacuum motor assembly. The vacuum motor assembly may include a working-air flow path and a separate motor-ventilating-air flow path, with the working-air flow path including a working-air inlet and a working-air outlet. The working-air inlet may be fluidly connectable to the waste recovery tank, whereby the vacuum motor assembly may enable a soil-containing fluid to be vacuumed into the waste recovery tank. The cleaning machine also may include a sound-suppression hood that covers at least a part of the vacuum motor assembly. Alternatively, or in addition to the sound-suppression hood, the cleaning machine may include a first muffler assembly and a second muffler assembly. The first muffler assembly may be fluidly connected to the working-air outlet; and the second muffler assembly may be fluidly connected to the first muffler assembly. In this fashion, sound produced by the vacuum motor assembly may be suppressed.
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