Electric toothbrush

Details Electric toothbrush Electric toothbrush

1988-04-12

1989-11-28

Roberts, Edward L.

Brushing, scrubbing, and general cleaning

Machines

Brushing

200 5B, 200 6152, 2002931, A46B 1302

Patent

active

048828017

ABSTRACT:
Electric toothbrush includes a hollow handle and a rotary brush. A gravity-induced movement responsive switch, such as mercury switch, is located within the handle, and a hand-operated switch is located on the outer surface of the handle. A user by operating a hand-operated switch sets the brush to a lower row of teeth or an upper row of teeth thus switching over an electromotor located within the handle whereas the mercury switch automatically reverses the direction of rotation of the electromotor shaft depending upon respective tilted positions of the handle. An intermediate element, for example a spur-gearing coupling is interconnected between the shaft of the motor and the brush.

REFERENCES:
patent: 1833967 (1931-12-01), Groff, Jr.
patent: 2310626 (1943-02-01), Gold
patent: 2618797 (1952-11-01), Grover
patent: 3451086 (1969-06-01), Burgett
patent: 3987549 (1976-10-01), Robertelli
patent: 4275749 (1981-06-01), Cavoli
patent: 4335480 (1982-06-01), Liu

Affiliated with

Also associated with

Rating

Electric toothbrush does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electric toothbrush, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electric toothbrush will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-574375