Plastic mold negative pressure cooling system
US4287941A · kind A · utility
12Cited by
6References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 1, 1979 |
| Grant date | Sep 8, 1981 |
| Priority date | — |
| Expiry date | Oct 1, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S165/917
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A negative pressure cooling system for cooling passageways in plastic molds includes a closed reservoir that is maintained under a high vacuum by a vacuum fluid pump with the outlet of the cooling passageway being connected to the reservoir inlet and with the reservoir outlet being connected to the cooling passageway inlet through a pressure pump and a fluid pressure regulator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.