Applicator

Patent metadata

Field	Value
Publication number	US-11766110-B2
Application number	US-202017437463-A
Country	US
Kind code	B2
Filing date	Mar 13, 2020
Priority date	Mar 15, 2019
Publication date	Sep 26, 2023
Grant date	Sep 26, 2023

Abstract

An applicator which comprises an application body arranged inside the front part of a barrel cylinder supplying the application body with the application liquid stored in a storage portion in the barrel cylinder, and is configured such that: a full coupling portion and a temporary coupling portion are formed on each of a front barrel and the barrel cylinder; the front barrel and the barrel cylinder each have an anti-rotation rib; the anti-rotation ribs are not engaged with each other in the initial coupled state before the temporary coupled state in which the temporary coupling portions of the barrel cylinder and the front barrel are engaged with each other; and, the anti-rotation ribs become engaged with each other in the fully coupled state in which the full coupling portions are engaged with each other.

First claim

The invention claimed is:

1. An applicator which comprises: a barrel cylinder in which an application liquid is stored in a storage portion inside a rear part thereof; and an application body arranged inside a front part of the barrel cylinder wherein the application body is supplied with the application liquid stored in the storage portion in the barrel cylinder, characterized in that:
a full coupling portion and a temporary coupling portion are formed on each of a front barrel and the barrel cylinder;
the front barrel and the barrel cylinder each have an anti-rotation rib;
the anti-rotation ribs are not engaged with each other in an initial coupled state, before a temporary coupled state, in which the temporary coupling portions of the barrel cylinder and the front barrel are engaged with each other; and,
the anti-rotation ribs become engaged with each other in a fully coupled state in which the full coupling portions are engaged with each other,
wherein a seal ball is fitted in a front end portion of the barrel cylinder via a seal joint, and in the fully coupled state the seal ball is held in the storage portion of the barrel cylinder, and the seal joint in which the seal ball is fitted in, is formed with a projected portion projecting from a rear end opening thereof.

2. The applicator according to claim 1 , wherein the temporary coupling portion formed on the barrel cylinder is formed on an application body side of the full coupling portion of the barrel cylinder.

3. The applicator according to claim 2 , wherein the barrel cylinder is formed with an anti-rattling portion that radially supports the front barrel from an inside, at least, at the time of either the initial coupled state or the temporary coupled state.

4. The applicator according to claim 3 , wherein the full coupling portion of the barrel cylinder has different outside diameters at the front side and the rear side thereof.

5. The applicator according to claim 1 , further comprising: a piston that slides inside the storage portion; a screw shaft threaded on a peripheral surface thereof; a propelling body for a propelling operation; a rotary cam body; and a transmission cam body, wherein a threaded portion mating the screw shaft is provided in a rear of the storage portion, the rotary cam is turned by a propelling operation on the propelling body so as to relatively rotate the screw shaft and the threaded portion to thereby advance the screw shaft, which in turn advances the piston to supply the application body with the application liquid stored in the storage portion, and
at least one of the screw shaft, the rotary cam body, and the transmission cam body is formed symmetrically with respect to a front-rear direction.

6. The applicator according to claim 5 , wherein a screw body is formed with a threaded portion for accommodating the rotary cam body, the transmission cam body and the propelling body, the screw body having an inclined surface whose diameter increases from a rear end toward a front, formed on an inner surface thereof.

7. The applicator according to claim 6 , wherein: a relative rotation between the rotary cam body and the screw shaft is restricted; the transmission cam body rotates the rotary cam body by the propelling operation on the propelling body; the screw body formed with the threaded portion mating the screw shaft is provided in a rear of the storage portion; and, by the operation of the propelling body the rotary cam body rotates to advance the piston to supply the application liquid stored in the storage portion to the application body.

8. The applicator according to claim 1 , wherein the application liquid is an oil-based cosmetic liquid stored in the barrel cylinder, and the barrel cylinder is made of PBT.

Assignees

• Mitsubishi Pencil Co

Inventors

• Nakada Jun

Classifications

• A45D34/04 Primary

  Appliances specially adapted for applying liquid, e.g. using roller or ball · CPC title

• A45D2034/002

  Accessories · CPC title

• A45D2034/005

  with a cartridge · CPC title

• A45D2200/055

  Piston or plunger for supplying the liquid to the applicator · CPC title

• B43K5/1809 Primary

  Feed bars · CPC title