Air valve combining typed polyurethane foam ejection device for tire

Patent metadata

Field	Value
Publication number	US-10836128-B2
Application number	US-201715482298-A
Country	US
Kind code	B2
Filing date	Apr 7, 2017
Priority date	May 24, 2016
Publication date	Nov 17, 2020
Grant date	Nov 17, 2020

Abstract

An embodiment of the present invention provides an air injection valve-integrated spray for spraying and applying polyurethane foam to a desired portion of a tire. The spray includes a polyurethane foam chamber disposed at an end of a coupling portion and keeping polyurethane foam under pressure and an air delivery chamber delivering air injected from an air injection valve to a breaking portion of the polyurethane foam chamber, in which the breaking portion of the polyurethane foam chamber is broken by air coming out of the air delivery chamber, so the polyurethane foam is sprayed.

First claim

What is claimed is:

1. An air injection valve-integrated spray comprising:
a polyurethane foam chamber containing a polyurethane foam under pressure; and
an air delivery chamber delivering air injected from an air injection valve to a breaking portion of the polyurethane foam chamber; and
a spray guide positioned laterally outward of the polyurethane foam chamber and the air delivery chamber;
wherein the breaking portion of the polyurethane foam chamber is broken by the air delivered by the air delivery chamber, so the polyurethane foam is sprayed,
wherein the spray guide allows the polyurethane foam to be applied to a predetermined portion of a tire, and
wherein the spray guide is composed of one or more plates, the one or more plates respectively have a first end coupled and fixed to the polyurethane foam chamber or the air delivery chamber and a second end as a free end, and the one or more plates are positioned in a manner such that the sprayed and diffused polyurethane foam is guided to the predetermined portion of the tire.

2. The spray of claim 1 , wherein the predetermined portion to which the polyurethane foam is applied is an inner liner of the tire.

3. The spray of claim 1 , wherein the air delivery chamber has a coupling portion for coupling to the air injection valve.

4. The spray of claim 3 , wherein the coupling portion is a thread which corresponds to a thread on the air injection valve.

5. The spray of claim 1 , wherein the air delivery chamber is formed in a tube shape.

6. The spray of claim 5 , wherein the air delivery chamber has a seat, where the polyurethane foam chamber is seated, at an end of the tube shape.

7. The air injection valve of claim 1 , wherein the one or more plates maintain their positions when guiding the sprayed polyurethane foam to the predetermined portion of the tire.

8. An air injection valve-integrated spray, comprising:
a polyurethane foam chamber containing a polyurethane foam under pressure;
an air delivery chamber delivering air injected from an air injection valve to a breaking portion of the polyurethane foam chamber, the air delivery chamber including a seat formed in a shape corresponding to an outer shape of the polyurethane foam chamber and configured to support the polyurethane foam chamber;
a coupling portion coupling the air injection valve and the air delivery chamber; and
a spray guide positioned laterally outward of the polyurethane foam chamber and the air delivery chamber,
wherein the breaking portion of the polyurethane foam chamber is broken by the air delivered by the air delivery chamber, so the polyurethane foam is sprayed,
wherein the spray guide is composed of one or more plates, the one or more plates respectively have a first end coupled and fixed to the polyurethane foam chamber or the air delivery chamber and a second end as a free end, and the one or more plates are positioned in a manner such that the sprayed and diffused polyurethane foam is guided to a predetermined portion of the tire.

9. A tire comprising the air injection valve-integrated spray of claim 1 .

10. A method for spraying polyurethane foam to a tire, the method comprising:
i) coupling the air injection valve-integrated spray of claim 1 to the air injection valve;
ii) mounting the air injection valve in the tire;
iii) injecting air through the air injection valve;
iv) breaking the breaking portion with the injected air; and
v) spraying and applying the polyurethane foam from the polyurethane foam chamber to the predetermined portion of the tire.

Assignees

• Hankook Tire Co Ltd

Inventors

• Lee Dae-Keun

Classifications

• B60C5/002

  filled at least partially with foam material · CPC title

• B29C44/188

  Sealing off parts of the cavities · CPC title

• B29L2030/00

  Pneumatic or solid tyres or parts thereof {(conveyor belts B29L2031/7092; drive belts B29L2031/7094; fourdrinier belts B29L2031/733)} · CPC title

• B29C73/025

  fed under pressure · CPC title

• B60C5/14

  with impervious liner or coating on the inner wall of the tyre · CPC title