Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1998-06-04
1999-11-09
Till, Terrence R.
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
15330, 181229, A47L 900
Patent
active
059790130
ABSTRACT:
The present invention provides for noise reduction during operation of a portable blower by reducing the noise or acoustic energy escaping from the inlet of the blower housing. The noise reduction is achieved in one respect by placing sound absorbing material in a plenum attached to the inlet opening of the blower housing. Other features of the preferred plenum include louvered openings and angled engagement members to draw the plenum tightly against the blower housing.
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Beckey Thomas J.
Lund Rodney D.
O'Brien Steven T.
Porter Steven R.
Shaffer Chadwick A.
The Toro Company
Till Terrence R.
Trevarthen Donald S.
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