Heated die punch construction and control device
US5451288A · kind A · utility
25Cited by
11References
21Claims
0Family size
Inventors
Key dates
| Filing date | Nov 5, 1992 |
| Grant date | Sep 19, 1995 |
| Priority date | — |
| Expiry date | Nov 5, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1313
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Invention discloses a heated die to form long lived aperatures in upper region of plastic wrapped packages; said die featuring improved construction providing focused unidirectional heat flow to avoid package failure leading to product deterioration and package failure and disengagement with display hangers; said heat control effected by micro control of flow of energizing electricity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.