Positive internal latch lock for an injection mold
US5494435A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 9, 1994 |
| Grant date | Feb 27, 1996 |
| Priority date | — |
| Expiry date | Sep 9, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2045/2604
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A positive internal latch lock for an injection mold having outer, intermediate, and inner plates movable between open and closed mold positions. The latch lock includes a mechanism for securing the outer and intermediate plates at a predetermined spaced distance when the mold is opened at a first parting line between the outer and intermediate plates. Further, the latch lock provides a mechanism for locking the intermediate and inner plates together until the outer and intermediate plates are secured at the predetermined spaced distance. After the outer and intermediate plates are secured, the intermediate and inner plates are allowed to open at a second parting line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.