Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1981-01-26
1982-11-09
Moore, Chris K.
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
15377, 318 99, 318434, A47L 928
Patent
active
043577296
ABSTRACT:
A vacuum cleaner structure having a control for reducing the total current delivery to the vacuum cleaner as when both a suction motor thereof and a brush motor thereof are being operated concurrently. The control includes an "On-Off" switch mounted on a portion of the suction hose for the vacuum cleaner. The invention comprehends the provision of such a current-reducing control where the full load currents of the suction and brush motors cumulatively total an amount greater than a preselected safe current deliverable to the vacuum cleaner. The control is arranged to be used with a vacuum cleaner having a suction hose connected between a suction unit and a cleaning unit thereof, such as a floor cleaning unit. In one form, the control utilizes a two-conductor wire suction hose, and in another form, the control utilizes a three-conductor wire suction hose. The "On-Off" switch is mounted on the handle on the end of the suction hose which may be attached to a cleaning unit and circuitry is provided in a control portion carried by the suction unit responsive to the disposition of the "On-Off" switch to effect the desired current and speed control of the system. The handle-mounted "On-Off" switch also controls the suction unit during cleaning operations which do not employ a floor cleaning unit including a motor-driven brush.
REFERENCES:
patent: 3205420 (1965-09-01), Cobb
patent: 3551775 (1970-12-01), Safiuddin
patent: 3579706 (1971-05-01), Hetland
patent: 3588943 (1971-06-01), Hetland
patent: 4021879 (1977-05-01), Brigham
Nyland Roger L.
Vander Molen Donald R.
Moore Chris K.
Whirlpool Corporation
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