Mold apparatus
US4379687A · kind A · utility
13Cited by
9References
8Claims
0Family size
Inventors
Key dates
| Filing date | Mar 6, 1981 |
| Grant date | Apr 12, 1983 |
| Priority date | — |
| Expiry date | Mar 6, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2037/80
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A vacuum forming mold for reshaping sheets of thermoplastic material is provided with means to impart indicia to the articles produced. Such indicia can be molded into the article by providing interchangeable members which are insertable and removeable from the mold. By arranging the members in different combinations any desired numbering can be obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.