Rotatively rubbing eraser

Details Rotatively rubbing eraser Rotatively rubbing eraser

1988-04-20

1989-04-04

Roberts, Edward L.

Brushing, scrubbing, and general cleaning

Machines

Erasing

15 26, B43L 1900

Patent

active

048172260

ABSTRACT:
An eraser includes: a guiding holder having a pair of helical grooves formed inside the holder, and a sleeve holding an eraser stick in the sleeve having a pair of protruding beads formed on the sleeve helically engaging the pair of helical grooves in the holder, whereby upon a depression of the holder against a marking paper, the eraser as held in the sleeve is helically rotated to rotatively rub out a mark on the paper.

REFERENCES:
patent: 2074255 (1937-03-01), Dodson
patent: 2171308 (1939-08-01), King

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