Disk cartridge made by injecting molten synthetic resin into a mold so that flash lines, weld lines and burn marks do not occur
US5161081A · kind A · utility
14Cited by
11References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 27, 1991 |
| Grant date | Nov 3, 1992 |
| Priority date | — |
| Expiry date | Nov 27, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C45/2628
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Molten resin is ejected from the gate provided in the wall of a mold, which corresponds to the face of the head insertion opening of a disk cartridge, so that the molded half of the disk cartridge has scarcely any defect in the surface thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.