Method for producing a shoe with an air pump device, comprising a bellows which is formed in a midsole
US11871815B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 3, 2018 |
| Grant date | Jan 16, 2024 |
| Priority date | — |
| Expiry date | Feb 3, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29D35/142
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a method for producing a shoe with an air pump device bellows which is arranged in the heel region, wherein an upper (2), a midsole (3), and an outsole (4) are first provided. The lower face (32) of the midsole (3) has a recess (36) for forming a cavity for the bellows and a surface which surrounds the recess on all sides and which comprises a surface profile, and the upper face (41) of the outsole (4) has a surface with a surface profile which complements the surface profile of the lower face of the midsole. The horizontal extension of the upper face (41) of the outsole (4) and of a sole section (22) of the upper (2) is greater than the horizontal extension of the midsole (3) such that the outsole (4) and the upper (2) protrude beyond the centered midsole (3) on all sides. In order to connect the upper (2), the midsole (3), and the outsole (4), the midsole (3) is first adhered onto the sole section (22) in a centered manner, and the upper (2) together with the midsole (3) are pressed onto the outsole (4) which is provided in the base element (6) of an injection mold. In the process, the complementary surfaces are adhered such that the cavity of the recess …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.