Patent · US Expired

Brush section for an electric toothbrush

US5862558A · kind A · utility

65Cited by

1References

29Claims

0Family size

Assignee

The Braun Corporation · DE

Inventors

Peter Hilfinger · Bad Homburg vor der Höhe, DE
Karl Herzog · Frankfurt am Main, DE
Gerhard Kressner · Schongau, DE

Key dates

Filing date	Mar 25, 1997
Grant date	Jan 26, 1999
Priority date	—
Expiry date	Mar 25, 2017

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61C17/40
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

The invention is directed to a brush section (1) for an electric toothbrush which includes a mounting tube (2) in which a shaft (7) rotary about a longitudinal axis (3) is received. Further, the brush section (1) includes a bristle carrier (11) from which bristles (15) extend in the direction of a brush axis (14). The bristle carrier (11) is rotary about a transverse axis (19) by means of a bearing pin (21). By means of in particular a tapered disk (24), the brush axis (14) and the transverse axis (19) define between them an angle (28) departing from an apex (29). In operation of the electric toothbrush, the bristle carrier (11) performs a nutating motion about the transverse axis (19). This effects a revolving approaching/receding motion of the free ends of the bristles (15) resulting in an improved cleaning action on a user's teeth.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.