Electric toothbrush

Details Electric toothbrush Electric toothbrush

2006-12-19

2006-12-19

Graham, Gary K. (Department: 1744)

Brushing, scrubbing, and general cleaning

Machines

Brushing

C015S028000, C015S022400

Reexamination Certificate

active

07150061

ABSTRACT:
An electric toothbrush has a neck extending in a longitudinal direction, a head at a remote end of the neck, a handle at a proximal end of the neck, an electric motor located within the handle, and a tuft block mounted to the head in a manner allowing pivotal oscillation about a tuft block axis that is normal to the longitudinal direction of the neck. A primary rocker arm extends longitudinally within the handle and/or neck and pivots about a primary rocker arm axis that is parallel to the tuft block axis. A proximal end of the primary rocker arm is driven by the electric motor. A secondary rocker arm extends longitudinally within the neck and pivots about a secondary rocker arm axis that is parallel to the tuft block axis. A distal end of the secondary rocker arm drives the tuft block and a proximal end of the secondary rocker arm is driven by the primary rocker arm.

REFERENCES:
patent: 1833916 (1931-12-01), Shaler
patent: 3978852 (1976-09-01), Annoni
patent: 4149291 (1979-04-01), Stoltz
patent: 4225994 (1980-10-01), Stoltz
patent: 5253382 (1993-10-01), Beny
patent: 2004/0177458 (2004-09-01), Chan et al.
patent: 2005/0055784 (2005-03-01), Wong
patent: 2006/0010622 (2006-01-01), Naruse et al.

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