Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1996-07-26
1998-03-03
Moore, Chris K.
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
15344, 15346, 15405, A47L 524
Patent
active
057221111
ABSTRACT:
A blower vacuum attachment for use with a multi-purpose power tool having a motor for powering the attachment on the elongated tubular boom extending between the attachment and the motor through which a drive shaft extends. The attachment includes a tubular connector for attaching a blower housing to the tubular boom. The blower housing has an axial air inlet and a circumferential air outlet. An impeller oriented within the housing and driven by the drive shaft draws air into the axial air inlet and discharges air to the air outlet. An intake tube is affixed to the blower housing inlet and extends axially therefrom. A debris collection bag and a blower tube can be alternately attached to the blower housing air outlet so that the blower vacuum attachment could be used respectively as a vacuum or as a blower. The blower tube has an air inlet which is removably attached to blow the air out and an air outlet which is oriented generally adjacent the intake tube inlet for discharging air along a blower outlet axis which is spaced from and generally parallel to the central axis aligned with the intake tube. The blower tube air outlet is sized relative to the intake tube air inlet so that the air discharge velocity is substantially higher than the air intake velocity enabling the attachment to be used in the blower mode without removal of the intake tube from the blower housing or changing the way the user grasps the multi-purpose power tool.
REFERENCES:
patent: 4187577 (1980-02-01), Hansen
patent: 4227280 (1980-10-01), Comer
patent: 4242794 (1981-01-01), Peterson
patent: 4404706 (1983-09-01), Loyd
patent: 4413371 (1983-11-01), Tuggle et al.
patent: 4644606 (1987-02-01), Luerken et al.
patent: 5450649 (1995-09-01), Turnbull
patent: 5522115 (1996-06-01), Webster
patent: 5604954 (1997-02-01), Webster et al.
patent: 5659920 (1997-08-01), Webster et al.
Brazell Kenneth M.
Sowell Lee
Moore Chris K.
Ryobi North America
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