Cosmetic applicator

Patent metadata

Field	Value
Publication number	US-10143288-B2
Application number	US-201615096847-A
Country	US
Kind code	B2
Filing date	Apr 12, 2016
Priority date	Apr 13, 2015
Publication date	Dec 4, 2018
Grant date	Dec 4, 2018

Abstract

Provided is a cosmetic applicator which is excellent in a stability of discharging a liquid cosmetic and excellent as well in an aging stability of a liquid cosmetic and which makes it easy to observe the end of consuming the liquid cosmetic regardless of whether or not an inside of a reservoir is visible and whether or not a coating part is a ballpoint pen type. The cosmetic applicator is prepared by providing a cylindrical reservoir, a coating part mounted at a tip of the cylindrical reservoir, a liquid cosmetic and a liquid follower which is brought into contact with the liquid cosmetic and moves following a reduction in the liquid cosmetic and which has a hue different from that of the liquid cosmetic, wherein a volume of the follower is 0.5 or more based on a volume of the liquid cosmetic.

First claim

What is claimed is:

1. A cosmetic applicator comprising:
a cylindrical reservoir,
a coating part mounted at a tip of a housing of the cylindrical reservoir,
a liquid cosmetic supplied directly to at least partially fill the cylindrical reservoir to the coating part or directly to the cylindrical reservoir communicating with the coating part via an interposed member to at least partially fill the cylindrical reservoir, and a liquid follower which is brought into contact with the liquid cosmetic and moves following a reduction in the liquid cosmetic due to consumption thereof and which has a hue different from that of the liquid cosmetic,
wherein a volume of the follower is 0.5 or more based on a maximum volume of the liquid cosmetic of the cylindrical reservoir, and
wherein the liquid follower comprises at least one selected from a liquid which is insoluble or scarcely soluble in the liquid cosmetic, comprising a nonvolatile or scarcely volatile organic solvent, a gelled substance of the insoluble or scarcely soluble liquid comprising a liquid containing the nonvolatile or scarcely volatile organic solvent and a thickener.

2. The cosmetic applicator as described in claim 1 , wherein the nonvolatile or scarcely volatile organic solvent is at least one selected from polybutene, mineral oils, silicone oils, liquid paraffins, and poly-α-olefins.

3. The cosmetic applicator as described in claim 1 , wherein the thickener is at least one selected from styrene base thermoplastic elastomers, vinyl chloride base thermoplastic elastomers, olefin base thermoplastic elastomers, polyamide base thermoplastic elastomers, polyester base thermoplastic elastomers, polyurethane base thermoplastic elastomers, calcium salts of phosphoric acid esters, fine particle silica, and acetoalkoxyaluminum dialkylates.

4. The cosmetic applicator as described in claim 1 , wherein the follower has a specific gravity of less than 100% of a specific gravity of the liquid cosmetic.

5. The cosmetic applicator as described in claim 1 , wherein the cylindrical reservoir is formed by a material having a light transmittance of 50% or more.

6. The cosmetic applicator as described in claim 1 , wherein the coating part is a ball holder which holds a ball.

7. The cosmetic applicator as described in claim 6 , wherein the ball holder is constituted by metal.

8. The cosmetic applicator as described in claim 1 , wherein the coating part is a fiber bundle feed.

9. The cosmetic applicator as described in claim 1 , wherein the coating part is a sintered feed.

10. The cosmetic applicator as described in claim 1 , wherein an inner wall surface of the cylindrical reservoir is subjected to a water repellent film forming treatment by coating with a water repellent agent of a silicone base, a silicon resin or a fluorine base.

Assignees

• Mitsubishi Pencil Co

Inventors

• Sakuma Satoshi
• Hayakawa Takayuki
• Ooba Shigeki

Classifications

• A45D34/041

  using a roller, a disc or a ball · CPC title

• B43K7/06

  Reservoirs with ink-level inspection means · CPC title

• A45D34/042 Primary

  using a brush or the like · CPC title

• B43K5/12

  with ink-level inspection means · CPC title