Brushing – scrubbing – and general cleaning – Machines – Brushing
Patent
1980-01-08
1981-12-08
Roberts, Edward L.
Brushing, scrubbing, and general cleaning
Machines
Brushing
15DIG5, A46B 1302
Patent
active
043040233
ABSTRACT:
A tooth-brushing device comprising a brushing unit having a pair of counter-rotating shafts, with bristles projecting radially outwardly from each shaft. The bristles are arranged in a series of clusters spaced from one another along the length of each shaft. Preferably, the clusters of bristles are spaced apart a distance approximately the width of a tooth.
REFERENCES:
patent: 1860894 (1932-05-01), Lieux
patent: 2840837 (1958-07-01), Gustems
patent: 3015833 (1962-01-01), Gilet
patent: 3103679 (1963-09-01), Clemens
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