Electric toothbrush

Details Electric toothbrush Electric toothbrush

1993-10-19

1995-04-11

Roberts, Jr., Edward L.

Brushing, scrubbing, and general cleaning

Machines

Brushing

15 28, A61C 1734, A46B 1302

Patent

active

054046084

ABSTRACT:
An electric toothbrush comprises a handle part (1) and a push-on brush (4). From one end of the handle part (1) there projects the end of a hollow shaft (3) in which a toothbrush arbor (9) is coaxially arranged, the push-on brush (4) being adapted to be pushed on to the hollow shaft (3). The push-on brush (4) has a rotatable tuft of bristles which may be driven by a longitudinally reciprocating connecting rod which attaches to the arbor (9) when the brush (4) and handle (1) are attached together. A gear (18) in the handle part (1) has two cams (23, 27) which are mutually phase shifted by 180.degree. . The first cam (23) displaces the hollow shaft (3) and the second cam displaces the toothbrush arbor (9) in the opposite direction.

REFERENCES:
patent: 4156620 (1979-05-01), Clemens
patent: 4989287 (1991-02-01), Scherer
patent: 5020179 (1991-06-01), Scherer

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