Filament for an oral care implement and oral care implement

US10869545B2 · kind B2 · utility

Assignee

• The Procter & Gamble Company · US

Inventors

• Erwin Mark · Eschborn, DE
• Jochen Kawerau · Kronberg, DE
• Jens Alinski · Kelkheim, DE
• Sven Alexander Franke · Darmstadt, DE
• Karen Lynn Claire-Zimmet · Hofheim, DE
• Uwe Jungnickel · Königstein, DE

Key dates

• Filing date: Oct 10, 2017
• Grant date: Dec 22, 2020
• Expiry date: Feb 7, 2038

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A46B2200/1066
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A filament for an oral care implement has a longitudinal axis and a substantially cross-shaped cross-sectional area extending in a plane substantially perpendicular to the longitudinal axis. The cross-shaped cross-sectional area has four projections and four channels, the projections and channels are arranged in an alternating manner. The cross-sectional area has an outer diameter, and each channel has a concave curvature formed by neighboring and converging projections. The concave curvature has a radius which is within a range from about 0.015 mm to about 0.12 mm, and the ratio of the outer diameter to the radius is within a range from about 2.5 to about 12.