Vacuum cleaner and method of dissipating electrostatic charge th

Details Vacuum cleaner and method of dissipating electrostatic charge th Vacuum cleaner and method of dissipating electrostatic charge th

1986-12-19

1987-12-29

Moore, Chris K.

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

15377, 29829, 29850, 1562739, 156294, 1563031, 174 47, 361212, 361220, A47L 928

Patent

active

047150866

ABSTRACT:
A vacuum cleaner includes a floor cleaning unit having a rotatable brush driven by a brush motor and a receptacle for collecting particulate matter. The floor cleaning unit is mechanically and pneumatically interconnected with the receptacle through a rigid wand and a wand handle and hose assembly. The wand handle and hose assembly includes a wand handle, disposed between the rigid wand and a flexible hose. The wand handle includes a passage through which air and particulate matter pass from the floor cleaning unit to the receptable. A corona discharge element with a roughened surface is positioned in the downstream end of the wand handle passage. A stub tube is positioned in the upstream end of the wand handle passage to connect the wand handle to the wand. A conductive strap, installed in the wand handle using a heat staking process, interconnects the stub tube and the corona discharge element. During the operation of the vacuum cleaner, any electrostatic charge that has accumulated on the wand will migrate to the roughened surface of the corona discharge element and will be dissipated or drained off by a corona discharge into the air flowing through the wand handle.

REFERENCES:
patent: 1920889 (1933-08-01), Pullen
patent: 2244635 (1941-06-01), Williamson
patent: 2430081 (1947-11-01), Roberts et al.
patent: 3713280 (1973-01-01), Keller et al.
patent: 3780345 (1973-12-01), Earman
patent: 4194081 (1980-03-01), Medford et al.
patent: 4215384 (1980-07-01), Elson
patent: 4345297 (1982-08-01), Check

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