Brushing – scrubbing – and general cleaning – Machines – Brushing
Patent
1993-09-24
1994-10-11
Roberts, Edward L.
Brushing, scrubbing, and general cleaning
Machines
Brushing
15 28, 74 70, A61C 1734, A46B 1302
Patent
active
053534603
ABSTRACT:
A hand-held power driven toothbrush carries a pair of exposed brush elements and self-contained driving means effective to directly drive one of said brush elements in oscillation, with linkage between the brush elements such that the second brush element is also oscillated, the two brush elements preferably being oscillated in opposite directions.
REFERENCES:
patent: 2598275 (1952-03-01), Lakin
patent: 2601567 (1952-02-01), Steinberg
patent: 4048690 (1977-11-01), Wolfson
patent: 4274173 (1981-01-01), Cohen
patent: 4320774 (1982-07-01), Rogers
patent: 4338957 (1982-06-01), Meibauer
patent: 4727894 (1988-04-01), Meibauer
patent: 4766630 (1988-03-01), Hegemann
patent: 5077855 (1992-03-01), Ambasz
patent: 5177826 (1993-01-01), Vrignaud et al.
Ohio Health Care Products, Inc.
Roberts Edward L.
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