Pattern assembly
US4109699A · kind A · utility
18Cited by
6References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 5, 1976 |
| Grant date | Aug 29, 1978 |
| Priority date | — |
| Expiry date | Mar 5, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22C7/02
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A pattern assembly for use in the lost pattern process of investment casting characterized by a center tree or sprue member including a central stem and a plurality of laterally projecting collars spaced apart along the stem and united therewith to provide the surface area for gating the patterns, the cross-sectional size of the stem being greater than the projecting width of the collar, whereby the stem serves to form a riser.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.