Patent · US Expired

Method of producing thick-walled brushes, in particular toothbrushes

US6919038B2 · kind B2 · utility

78Cited by

12References

7Claims

0Family size

Assignee

M+C Schiffer GmbH · DE

Inventors

Berthold Meyer · Linz, DE
Andreas Walgenbach · Neustadt, DE
Armin Seifert · Neuwied, DE

Key dates

Filing date	Jan 17, 2003
Grant date	Jul 19, 2005
Priority date	—
Expiry date	Feb 7, 2023

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29L2031/463
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The present invention relates to a method of producing thick-walled brushes, in particular toothbrushes, with a grip piece and a brush head supporting bristle filaments. In order to increase the productivity, the method mentioned at the start is further developed by the present invention in that a core produced in a first injection molding cycle is coated with a plastic component in at least one subsequent injection molding cycle so as to form a multi-layered grip piece.

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