Mold gate having multiple valve stem receiving apertures
US4854840A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 25, 1988 |
| Grant date | Aug 8, 1989 |
| Priority date | — |
| Expiry date | Feb 25, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C33/12
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A mold gate for an inner tube mold is provided with a plurality of apertures for selectively receiving valve stems therein for bonding to the inner tube. A plug is inserted into each of the nonselected apertures to enable the single gate to be used to cure inner tubes having different valve positions to eliminate changing the gate each time a different valve location is required for a given mold. When the valve stem receiving openings are in close proximity to each other an elongated plug is placed in an elongated gate aperture to selectively seal one of the two valve stem openings while enabling the other opening to remain unblocked for receiving a valve stem during the molding operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.