Method for making a ring-shaped mold
US4411175A · kind A · utility
13Cited by
7References
19Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Oct 6, 1980 |
| Grant date | Oct 25, 1983 |
| Priority date | — |
| Expiry date | Oct 6, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49796
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A ring-shaped mold of the split mold type constructed by assembling into an annular shape a plurality of sectorial separate blocks formed by cutting a ring-shaped workpiece haveing a mold surface on the annular circumference thereof, and the method and apparatus for making the same are disclosed. Sector lines interfacing adjoining the separate blocks on the mold surface intersect the circumference of the ring-shaped mold at angles not perpendicular to said circumference.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.