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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10980336 B1

PDFFull Text
Date of Patent:
Apr. 20, 2021

Filed:

Sep. 14, 2018

Method of making a unitary brush head and unitary toothbrush head

Applicant:

The Procter & Gamble Company, Cincinnati, OH (US);

Inventors:

Gerald Görich, Weiterstadt, DE;

Harald Schnizer, Kronberg, DE;

Nicolas Götz, Ober-Ramstadt, DE;

Klaus Eimann, Zellingen, DE;

Assignee:

The Procter & Gamble Company, Cincinnati, OH (US);

Attorney:

Vladimir Vitenberg

Primary Examiner:

Randall E Chin

Int. Cl.
CPC ...
A46D 3/00 (2006.01); A46B 9/04 (2006.01); A46B 1/00 (2006.01); B29C 45/00 (2006.01); A46D 1/00 (2006.01); A46B 3/12 (2006.01); B29C 45/14 (2006.01); A46B 3/00 (2006.01); B29C 33/30 (2006.01); B29C 45/56 (2006.01); B29C 45/34 (2006.01); A46B 3/04 (2006.01); B29C 45/26 (2006.01); B29L 31/42 (2006.01);
U.S. Cl.
CPC ...
A46B 9/04 (2013.01); A46B 1/00 (2013.01); A46B 3/00 (2013.01); A46B 3/005 (2013.01); A46B 3/04 (2013.01); A46B 3/12 (2013.01); A46D 1/0207 (2013.01); A46D 1/0238 (2013.01); A46D 1/0269 (2013.01); A46D 1/0276 (2013.01); A46D 3/00 (2013.01); A46D 3/005 (2013.01); B29C 33/301 (2013.01); B29C 45/0055 (2013.01); B29C 45/14385 (2013.01); B29C 45/2626 (2013.01); B29C 45/34 (2013.01); B29C 45/561 (2013.01); A46B 2200/1066 (2013.01); B29C 45/2673 (2013.01); B29L 2031/425 (2013.01);
Abstract

A method of manufacturing a unitary toothbrush head having a base and filaments extending therefrom. The method includes steps of injecting molten plastic material into a mold cavity having a pre-base cavity and a filament cavity extending therefrom; compressing the molten plastic material, once it is essentially filling the pre-base cavity, by impressing a punching tool into the molten plastic material from the rear side of the pre-base cavity being opposite to a side from which the filament cavity extends; and filling the filament cavity with the molten plastic material under the continuous impression of the punching tool.

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