Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1999-04-13
2000-08-22
Snider, Theresa T.
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
15405, 15410, A47L 524
Patent
active
06105206&
ABSTRACT:
An improved portable electrically powered leaf blower is disclosed that can provide levels of air flow and velocity comparable to those of gasoline-powered blowers, yet that generates substantially reduced noise, eliminates exhaust emissions and emissions from spilled fuel, and is lightweight and convenient to operate. The leaf blower incorporates a sound-insulated duct that encloses an electric motor and fan assembly, and a handle projects above the duct's inlet end. Electrical power is provided by a battery pack carried in a backpack worn by the operator. Positioning the primary noise sources within a duct that in use is positioned close to the ground minimizes noise levels both at the operator's ears and at a distance.
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Hibbs Bart D.
Newbern Scott C.
Tokumaru Phillip T.
Zambrano Thomas
Chen Tony D.
Department of Water and Power City of Los Angeles
Fong Jerry
Rozsa Thomas I.
Snider Theresa T.
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