Gate of mold for injection molding machine
US4171941A · kind A · utility
13Cited by
4References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 18, 1978 |
| Grant date | Oct 23, 1979 |
| Priority date | — |
| Expiry date | Jan 18, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2045/2882
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A gate of a mold for an injection molding machine comprises a valve cone having a circular cone shape or a pyramid shape and a valve seat corresponding to the valve cone wherein the valve cone is pushed toward the valve seat by a spring in the direction reverse to the injecting direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.