Direct bottomed article of footwear with an insert

Patent metadata

Field	Value
Publication number	US-11547176-B2
Application number	US-201916424072-A
Country	US
Kind code	B2
Filing date	May 28, 2019
Priority date	May 30, 2018
Publication date	Jan 10, 2023
Grant date	Jan 10, 2023

Abstract

An article of footwear has an upper that is direct attached with the sole. The direct attach sole has an insert, such as an airbag, that forms a portion of a sidewall. The insert is externally visible and forms at least a portion of an external sidewall of the sole. The insert is formed into the direct attach sole by having the insert or a mask temporarily joined with the insert contact a sidewall molding surface of a mold used in the direct attach operation such that the insert results in forming a visible element of the direct attached sole.

First claim

The invention claimed is:

1. A method of making an article of footwear having a direct attach sole, the method comprising:
positioning an insert in a mold cavity of a mold having a first molding surface forming a ground-contacting surface of a footwear sole, and a second molding surface forming a first sidewall portion of the footwear sole, wherein a mask contacts both the insert and the second molding surface allowing the insert to form a second sidewall portion of the footwear sole, wherein positioning the insert comprises mechanically engaging the mask to the insert and magnetically coupling the mask with a platen;
injecting a polymeric foam composition into the mold cavity containing the insert and the mask; and
positioning a footwear upper at the mold cavity, wherein the footwear upper is positioned such that the polymeric foam composition engages with the footwear upper to form the article of footwear having the insert forming the second sidewall portion of the footwear sole.

2. The method of making of claim 1 , wherein the insert is an airbag.

3. The method of making of claim 1 further comprising:
prior to injecting the polymeric foam composition, injecting a first polymeric composition into the mold cavity, wherein the first polymeric composition contacts the first molding surface; and
positioning the first molding surface relative to the insert such that the first polymeric composition contacts the insert.

4. The method of making of claim 3 , wherein the first molding surface moves to position the first molding surface relative to the insert.

5. The method of making of claim 3 , wherein the insert moves to position the first molding surface relative to the insert.

6. The method of making of claim 3 , wherein the positioning of the insert in the mold cavity comprises:
securing the insert to the platen with, in part, the mask; and
positioning the platen having the insert mechanically coupled thereon in the mold cavity.

7. The method of making of claim 3 further comprising decoupling the insert from the platen subsequent to positioning the first molding surface relative to the insert such that the first polymeric composition contacts the insert prior to injecting the polymeric foam composition.

8. The method of making of claim 3 , wherein the injecting of the first polymeric composition injects the first polymeric composition through a first runner of the mold and the injecting of the polymeric foam composition injects the polymeric foam composition through a second runner of the mold.

9. The method of making of claim 8 , wherein the first runner has a port on the second molding surface that is between the first molding surface and the insert during injecting of the first polymeric composition, and the second runner has a port on the second molding surface that is between the insert and the footwear upper during the injecting of the polymeric foam composition.

10. A method of making an article of footwear having a direct attached sole, the method comprising:
positioning a platen in a mold cavity of a mold, the mold having a first molding surface forming a ground-contacting surface of a footwear sole and a second molding surface forming a sidewall of the footwear sole, wherein the platen retains an insert and a mask magnetically coupled with the platen such that the mask contacts the second molding surface, the insert forms a portion of the sidewall of the footwear sole for the article of footwear;
injecting a first polymeric composition into the mold cavity, wherein the first polymeric composition contacts the first molding surface;
moving the first molding surface to contact the first polymeric composition with the insert;
removing the platen from the mold cavity while maintaining the insert in contact with the first polymeric composition;
positioning a footwear upper at the mold cavity;
injecting a polymeric foam composition into the mold cavity, wherein the polymeric foam composition contacts the first polymeric composition, the insert, and at least the second molding surface; and
moving the first molding surface such that the polymeric foam composition engages with the footwear upper and secures the footwear sole with the footwear upper, wherein the footwear sole comprises the first polymeric composition, the insert, and the polymeric foam composition.

Assignees

• Nike Inc

Inventors

• Chamblin Mike A

Classifications

• A43B23/02

  Uppers; Boot legs · CPC title

• A43B7/14 Primary

  with foot-supporting parts · CPC title

• A43B7/1445

  situated under the midfoot, i.e. the second, third or fourth metatarsal · CPC title

• B29D35/10

  having preformed soles or heels joined on to preformed uppers using a moulding technique, e.g. by feeding or injecting plastics material between the parts to be joined · CPC title

• A43B7/144

  situated under the heel, i.e. the calcaneus bone · CPC title