Cosmetic applicator
AssigneeMitsubishi Pencil Company, Limited
InventorsKota Fujimoto, Hayato Ohta
Life of this patent
Estimating the term…
Abstract
A cosmetic applicator may be capable of stably applying an application liquid without clogging the application member composed of a brush tip with particles contained in the application liquid. The front barrel may be made of a transparent material and the tip of the brush tip may be arranged to protrude from the front barrel through the front end opening of the front barrel while the brush tip is mounted inside the front barrel. A clearance may be formed between the front end opening of the front barrel and the brush tip, which allows the brush tip in the front barrel to also be deflected and deformed along with the deflection and deformation of the brush tip based on the application operation of the application liquid by the brush tip.
Claims20
A cosmetic applicator, comprising:
- a barrel comprising a front barrel and a rear barrel;
- an application member comprising a brush tip comprising a bundle of fibers on a front barrel side of the barrel;
- an application liquid as a liquid cosmetic;
- and
- an application liquid reservoir comprising the application liquid, disposed at a rear barrel of the barrel, and configured to supply the application liquid in the application liquid reservoir to the brush tip,
- wherein the front barrel is made of a transparent material
- wherein the brush tip is mounted within the front barrel, a tip portion of the brush tip being arranged to protrude from the front barrel through a front end opening of the front barrel,
- wherein a clearance is formed between the front end opening of the front barrel and the brush tip, allowing the brush tip in the front barrel to also be deflected and deformed together with the deflection deformation of the brush tip due to the application operation of the application liquid with the brush tip, and
- wherein the cosmetic applicator satisfies:
- 1
-
- mm
- ≤
- D
-
- 2
- <
- D
-
- 1
- ≤
- 3
-
- mm
- ,
- (
- 1
- )
- 0.25
- ≤
- D
-
- 3
- ,
- (
- 2
- )
- D1 being an inner diameter of the front end opening of the front barrel, D2 being an outer diameter of the brush tip located at the front end opening of the brush tip, and D3=(D1−D2)/D2, and
- (3) a ratio of areas, Sr=Sb/Sa, is 40%<Sr<95%. Sa being a cross-sectional area surrounded by the outer circumference of the brush tip at the outer diameter D2 of the brush tip located at the front end opening of the front barrel, and Sb is the cross-sectional area of the hollow portion formed at the brush tip.
Dependencies are inferred from the claim text.