Missing pad detector for a floor polishing tool

Details Missing pad detector for a floor polishing tool Missing pad detector for a floor polishing tool

1991-08-20

1993-01-12

Roberts, Edward L.

Brushing, scrubbing, and general cleaning

Machines

Wiping

15 491, 51177, A47L 1114

Patent

active

051778289

ABSTRACT:
A surface treating tool such as a floor polisher and method and apparatus for detecting the absence of a pad or other surface treating member on the tool. In the preferred manner of operation, the invention monitors the amperes being drawn by an electric motor rotating the pad support. If the amperage draw during initial start up of the tool is less than a predetermined amount (representing the absence of a pad on the support), the tool is prevented from lowering the padless support into potentially damaging contact with the floor or other surface.

REFERENCES:
patent: 3129539 (1964-04-01), Tempero
patent: 3496681 (1970-02-01), Oswald
patent: 4674142 (1987-06-01), Meili
patent: 5056175 (1991-10-01), Stein et al.

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