Method of manufacture of raised relief illuminated globe
US4300887A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 31, 1980 |
| Grant date | Nov 17, 1981 |
| Priority date | — |
| Expiry date | Mar 31, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2022/002
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of manufacturing a raised relief, illuminated globe includes printing a hemispherical map design on a flat vinyl plastic sheet, forming the vinyl plastic sheet into a substantially hemispherical shape, positioning the hemispherically formed sheet in a mold cavity, positioning a mold core on the back side of the sheet, injection molding a styrene backing for the hemispherical shaped sheet to conform the sheet with the mold cavity including relief areas defined in the cavity wall, and removing the molded hemisphere from the mold. A second molded hemisphere is produced in substantially the same manner and is attached to the first hemisphere to form a complete globe. The printed map design of the globe is positioned in the mold cavity to insure that the relief areas are properly positioned with respect to the design.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.