Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1981-03-23
1982-12-07
Moore, Chris K.
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
A47L 530
Patent
active
RE0310956
ABSTRACT:
The invention is included in a nozzle having side exhaust so that its suction tube is connected to one side of the nozzle. A groove arrangement of part spiral configuration is made in the internal periphery of the nozzle to provide the nozzle air and entrained dirt with a motion tending to move the air and entrained dirt towards the connecting suction duct. This is occasioned by the agitator brush configuration moving air and entrained dirt in a rotary direction which movement is interrupted by the groove and then moved along it. In addition, the cross sectional dimensioning of the nozzle arrived at tends to provide a substantially constant velocity of air flow to insure a relatively even suction effect completely across the lateral extent of the nozzle mouth.
REFERENCES:
patent: 969441 (1910-09-01), Backer
patent: 1708242 (1929-04-01), Simpson
patent: 3688339 (1971-02-01), Vincent et al.
Farley Richardson B.
Kreske Gerald H.
Moore Chris K.
The Hoover Company
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