Article of footwear formed from two preforms and method and mold for manufacturing same
US9731464B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2013 |
| Grant date | Aug 15, 2017 |
| Priority date | — |
| Expiry date | Jan 29, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29D35/148
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of manufacturing a midsole includes placing first and second preforms into a midsole recess of a mold, with first and second portions of the mold defining a first overflow chamber connected to the first recess; closing the mold by positioning the first and second portions in contact with one another; heating the mold for a predetermined period of time at a predetermined temperature such that the first and second preforms melt and bond together to form a midsole, with a portion of each of the first and second preforms flowing into the first overflow chamber to form a first overflow portion; removing the midsole from the mold; allowing the midsole to expand; and cutting away the first overflow portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.