Combination mould portion and protective element for pipe
US4522669A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 1, 1982 |
| Grant date | Jun 11, 1985 |
| Priority date | — |
| Expiry date | Sep 1, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1038
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A mould portion and/or protective element of the type consisting of a material subjected to deformation is disclosed. A method and a device for manufacturing such a mould portion and/or protective element are also disclosed. The mould portion and/or protective element is preferably intended to be used as a mould portion in moulding an article and/or as a protective element to prevent access of soil and water to a surface portion of the article during transportation and storage thereof. Such materials subjected to dimensional changes as can be used as mould portions and/or protective elements present the advantages of being inexpensive and permitting removal of the article without difficulty. One such material is for example cellular plastics. The dimensional changes, however, have entailed so great difficulties in using mould portions and/or protective elements of such materials that they have made the use of the material impossible. To eliminate the above mentioned disadvantage the mould portion and/or protective element of a material subjected to dimensional changes is manufactured with the desired dimensions, starting from at least one blank, immediately before the mould portion…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.