Toothbrush

Details Toothbrush Toothbrush

1988-01-04

1989-07-18

Feldman, Peter

Brushing, scrubbing, and general cleaning

Implements

Brush or broom

15DIG5, A46B 904

Patent

active

048479365

ABSTRACT:
A toothbrush in which the bristles define a surface across the width of the handle having a convex portion along the midline of the handle and concave portions on either side of the convex portion, thereby to conform to the corresponding complementary surface portions of the molars. In a preferred embodiment the bristles are longest along the center of the handle and shortest along the sides of the handle. To facilitate gripping, the handle has a cross-section that is concave along the front of the handle and of uniform thickness across the width of the handle. To minimize displacement of the handle when brushing various portions of the teeth, the handle is rearwardly curved along the lower portion thereof and is forwardly curved along the upper portion thereof.

REFERENCES:
patent: D200395 (1965-02-01), Brennesholtz
patent: D209736 (1968-01-01), Halm
patent: D238833 (1976-02-01), Hjelle et al.
patent: D275532 (1984-09-01), Solomon
patent: D276005 (1984-10-01), Fido
patent: 1188614 (1916-06-01), Bowen
patent: 1389624 (1921-09-01), Carroll
patent: 1611640 (1926-12-01), Janus
patent: 1984787 (1934-12-01), Elliot
patent: 2431861 (1947-12-01), Babe
patent: 2483503 (1949-10-01), Pollack
patent: 2625697 (1953-01-01), Cyser
patent: 4356585 (1982-11-01), Protell et al.

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