Method of manufacturing a midsole for a shoe and construction therefor
US5396675A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 10, 1991 |
| Grant date | Mar 14, 1995 |
| Priority date | — |
| Expiry date | Jun 10, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C70/78
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention is directed to a method of manufacturing a midsole for a shoe and the structure of the resulting midsole. The midsole includes a core of a first plastic material and a peripheral wrap of a second plastic material. The wrap has an outer peripheral surface comprising at least a portion of an outer peripheral surface of the midsole. The method includes the steps of molding a peripheral wrap from a sheet stock of the first plastic material by applying compressive forces on the sheet stock in a direction which is substantially perpendicular with the outer surface of the sheet stock, placing the wrap around the inner peripheral surface of a mold which approximates the shape of the midsole, and pouring the first plastic material in the mold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.