Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1992-06-04
1996-04-09
Spisich, Mark
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
745016, 745026, 180 193, 192 21, A47L 900
Patent
active
055049710
ABSTRACT:
A self propelled upright vacuum cleaner drive system integral with the axle of the drive wheels including an operator controlled reversing clutch transmission incorporating a separate unidirectional AC motor for forward and reverse control of the drive system independent from the vacuum cleaner suction motor. A triac controlled variable speed adjust circuit controls the rotational speed of the motor and thus the driven wheels on the base unit, while-a separate operator controlled adjustable response mechanism sets the engagement tension of the vacuum cleaner and transmission assembly corresponding to either a quick or a slow response of the axle of the drive wheels when actuated by the operator.
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Matsushita Appliance Corporation
Spisich Mark
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