Tire molding matrix
US4154564A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 15, 1974 |
| Grant date | May 15, 1979 |
| Priority date | — |
| Expiry date | Jul 15, 1994 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29D2030/0613
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A tire molding matrix comprising a plurality of projections on the tread molding surface of the matrix, the projections being for molding a first, radially outer and a second radially inner, pattern in the tread of the tire incorporating at least one main drainage groove, the configuration of the projections changing distinctively at a predetermined level which is substantially parallel to the surface of the matrix for molding the tread ground-contacting surface of the tire and which is situated at a depth which is a predetermined amount less than the depth of the projection for molding the main drainage groove, the second pattern comprising a wholly radial extension of only a part of the first pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.