Title: Tooth brush

Abstract: A tooth brush is disclosed in which parallell bristles extend in opposite directions from a central plate-like stem connected to a shaft or a handle. The tooth brush is used for cleaning teeth interspaces and comprises a base plate which abuts the gum and protects the same when the bristles work upon opposite teeth faces. The bristles are longer next to the base plate and gradually shorter as the distance therefrom increases. Also in the length direction of the stem the length of the bristles varies, and the minimum bristle lengths are found either at the tip or at the middle of the length of the active part of the brush.

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Inventors: Axelsson, Per Axel Torbjorn (652 25 Karlstad, SW)

Application Number: 585871
Filing Date: 1975-06-11
Publication_date: 1976-02-24
Assignee:
Primary Class(es): 15/167.1 15/106, 15/160, 15/176.5, 132/308
Other Classes:
US Patent Ref:

876185	Jan, 1908	Hillman	15/167.
1465522	Aug, 1923	Lunday	15/167.
2016597	Oct, 1935	Drake	15/110.
2160731	May, 1939	Haeberlin	15/167.
3559226	Feb, 1971	Burns	15/167.
3672378	Jun, 1972	Silverman	132/93.
3720975	Mar, 1973	Nelson	15/167.
D223651	May, 1972	Hermann	D4/25.

Other Refs: 538,2391,504,691

Jun, 1922	FR
Oct, 1967	FR

Primary Examiner: Feldman, Peter
Assistant Examiner:
Attorney: Cushman, Darby and Cushman