Convertible mold
US4551084A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 25, 1983 |
| Grant date | Nov 5, 1985 |
| Priority date | — |
| Expiry date | May 25, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C51/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A plastic molding apparatus for forming three-dimensional containers from a single sheet of plastic material and each comprising side-by-side generally dish-shaped members which are hinged together which dish-shaped members have different interior configurations with respect to one another. The apparatus comprises a pair of superimposed relatively movable male and female mold members. A pair of differently configurated side-by-side mold sets are carried by the mold members. A first plurality of different inserts having different projecting configurations are provided for said first mold set. A second plurality of different inserts are provided for the second set which have surface complementary to the first projecting inserts to establish a male-female mold relationship between the first and second plurality of inserts. Quick change means are provided for individually detachably securing the first and second inserts to the associated male and female mold members and thus enabling the molds to produce containers having variable predetermined physical characteristics. Means is provided on the mold members between the pairs of mold sets for producing a hinge between the dish-shaped me…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.