Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1988-06-07
1990-03-06
Moore, Chris K.
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
15332, 15339, A47L 928
Patent
active
049053434
ABSTRACT:
A control switch is disclosed for a two-speed vacuum cleaner motor and the like. The switch provides three sensors which operate in response to the mounting of three different types of accessories on a vacuum cleaner. One sensor causes low motor speed operation when an accessory is mounted requiring low speed operation. Another sensor operates to provide high speed motor operation when a high speed accessory is mounted. The third sensor prevents motor operation when an accessory is not mounted on the outlet of the vacuum cleaner. The control switch provides a high speed/low speed switch and a power switch. The power switch is automatically moved to its open or OFF position in response to the mounting of an accessory. Copnsequently, the high speed/low speed switch cannot operate to start the motor, and is therefore provided with low cost contacts. The control switch and motor provide plug-type connectors which automatically connect the internal motor wiring when the switch is installed.
REFERENCES:
patent: 2072690 (1937-03-01), Smellie
patent: 3319282 (1967-05-01), MacFarland
patent: 3467980 (1969-09-01), Golloway
patent: 4329757 (1982-05-01), Ramstrom et al.
patent: 4336626 (1982-06-01), Hone et al.
patent: 4398316 (1983-08-01), Scott et al.
patent: 4398316 (1983-08-01), Scott et al.
patent: 4610047 (1986-09-01), Dick et al.
Moore Chris K.
The Scott & Fetzer Company
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