IP Library Granted Patent US 8,201,566
Granted Patent B2
US 8,201,566 · App. 12/121,569 · Granted Jun 19, 2012

Cosmetic brush with many bristles for applying a cosmetic product

Assignee: Geka Brush GmbH
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Quick Facts
Patent No.
US 8,201,566
App. No.
12/121,569
Granted
Jun 19, 2012
Kind
B2
Abstract

The cosmetic brush, which is in particular a mascara brush, includes a bristle portion with a base body and a plurality of bristles that stick out from the base body in a radial direction and serve for the application of a cosmetic product. The bristles have a high bristle density of at least 6 bristles per square millimeter and consist of a plastic material that has a Shore hardness D of more than 40.

Claims (22)

1. A cosmetic brush, such as a mascara brush or brush for dying hair, comprising a bristle portion ( 2 ) with a base body made of a plastic material ( 5 ) and a plurality of non-tufted stand-alone bristles ( 6 ) that stick out from the base body ( 5 ) in a radial direction and serve for an application of a cosmetic product,

wherein each of said bristles ( 6 ) forms one integrally molded piece with a circumferential area ( 7 ) of the base body ( 5 ), and

wherein the bristles ( 6 ) have a high bristle density of at least 6 bristles ( 6 ) per square millimeter and consist of a plastic material that has a Shore hardness D of more than 40.

2. A cosmetic brush according to claim 1 , wherein the plastic material has a Shore hardness D of at least 45.

3. A cosmetic brush according to claim 1 , wherein the plastic material has a Shore hardness D of at most 60.

4. A cosmetic brush according to claim 1 , wherein the bristle density amounts to a maximum of 50 bristles ( 6 ) per square millimeter.

5. A cosmetic brush according to claim 1 , wherein the bristle portion ( 2 ) has a trim length (L BS ) along which bristles ( 6 ) are disposed that amounts to between 18 mm and 30 mm and extends in the direction of a central axis ( 4 ).

6. A cosmetic brush according to claim 1 , wherein bristles ( 6 ) that are disposed next to each other on a surface ( 7 ) of the base body ( 5 ) have a base distance (A BA ) of at most 0.63 mm with respect to each other.

7. A cosmetic brush according to claim 1 , wherein the bristles ( 6 ) on a surface ( 7 ) of the base body ( 5 ) have a base diameter (D BA ) of at most 0.3 mm with respect to each other.

8. A cosmetic brush according to claim 1 , wherein the bristles ( 6 ) on a surface ( 7 ) of the base body ( 5 ) have a base diameter (D BA ) of at most 0.166 mm with respect to each other.

9. A cosmetic brush according to claim 1 , wherein the bristles ( 6 ) have a bristle length (L BO ) of at most 2.5 mm and stick out from a surface ( 7 ) of the base body ( 5 ).

10. A cosmetic brush according to claim 1 , wherein the base body ( 5 ) has a diameter (D GR ) of up to 5 mm.

11. A cosmetic brush according to claim 1 , wherein the bristles ( 6 ) each have a conical shape that converges outwards, thus forming a cone angle (β) of 1° to 5°.

12. A cosmetic brush according to claim 1 , wherein the bristles ( 6 ) each have a conical shape that converges outwards, thus forming a cone angle (β) of approximately 4°.

13. A cosmetic brush according to claim 1 , wherein the bristles ( 6 ) have a rounded tip at their respective outer end with a radius (R) of the rounded tip of at most 0.05 mm.

14. A cosmetic brush according to claim 1 , wherein the plastic material has a density in the range of between 0.95 g/cm 3 and 1.30 g/cm 3 .

15. A cosmetic brush according to claim 1 , wherein the plastic material has a density in the range of between 0.98 g/cm 3 and 1.04 g/cm 3 .

16. A cosmetic brush, such as a mascara brush or brush for dying hair, comprising a bristle portion ( 2 ) with a base body made of a plastic material ( 5 ) and a plurality of non-tufted stand-alone bristles ( 6 ) that stick out from the base body ( 5 ) in a radial direction and serve for an application of a cosmetic product,

wherein each of said bristles ( 6 ) forms one integrally molded piece with a circumferential area ( 7 ) of the base body ( 5 ), and

wherein the bristles ( 6 ) have a high bristle density of at least 6 bristles ( 6 ) per square millimeter and consist of a plastic material that has a Shore hardness D of more than 40,

wherein individual bristles of said plurality of bristles ( 6 ) are disposed in parallel longitudinal rows, with respect to a longitudinal axis of the brush, and

wherein the individual bristles that are disposed next to one another in the longitudinal rows have a uniform distance with respect to each other when viewed in the longitudinal direction of the longitudinal rows and when viewed in a circumferential direction that is perpendicular to the direction of the longitudinal axis, the distance being determined by a modular row size, and adjacent longitudinal and circumferential rows being each disposed at an offset of half the modular row size with respect to each other.

Assignments (2)
CHANGE OF NAME Recorded Feb 7, 2011
From: GEKA BRUSH GMBH
To: GEKA GMBH
Reel/Frame 025753/0237 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 15, 2008
From: DUMLER, NORBERT; KULIK, DANIELA
To: GEKA BRUSH GMBH
Reel/Frame 020955/0832 →
Priority Claims (1)
EP 07009674 · May 15, 2007 · regional
Continuity (1)
Related Publication 20080283078A1 · Nov 20, 2008