Shoe with insole as part sole filler and method of making same
US6912801B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 18, 2002 |
| Grant date | Jul 5, 2005 |
| Priority date | — |
| Expiry date | Mar 22, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29D35/085
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of manufacture of footwear and the footwear comprising the steps of providing a last with an upper thereon, providing a mold insert on the bottom of the last, providing a mold having a mold cavity for a tread sole, disposing the last and upper against the mold with the mold insert disposed within the mold cavity, forming a sole in the mold cavity having a depression therein in the shape of the mold insert, providing an insole with a first portion in the shape of the depression and a second portion substantially in the shape of the sole and securing the first portion of the insole in the depression. The tread sole and insole are formed of materials preferably having different physical properties. The tread sole can include one of tongues and grooves and the insole would then have the other of tongues and grooves, said tongues and grooves mating with each other. The step of providing an insole can include removing the mold insert from the mold cavity, disposing the last spaced from the tread sole and then forming the insole in the cavity formed by the removal of the weight relief and the spacing of the last from the tread sole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.