Mold for forming resinous domed article and method of producing same
US6438816B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2001 |
| Grant date | Aug 27, 2002 |
| Priority date | — |
| Expiry date | Sep 26, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49826
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A mold for forming a resinous domed article which may be employed as a cover of a monitor camera is provided. The mold consists of a female block and a male block. The female block has formed therein a domed mold cavity which includes a hemispherical wall that is just half a sphere and an annular wall extending from an end of the hemispherical wall. The male block has a domed protrusion mating with the domed mold cavity of the female block. The domed protrusion consists of two parts: a hemispherical portion and a cylindrical portion. The hemispherical portion is mechanically joined to the cylindrical portion. This structure allows the surface of the domed protrusion of the male block to be formed smoothly without any irregularities on an interface between the hemispherical portion and the cylindrical portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.