Sand mold member and method
USRE36001E · kind E · reissue
3Cited by
17References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 18, 1997 |
| Grant date | Dec 22, 1998 |
| Priority date | — |
| Expiry date | Aug 18, 2017 |
Classification
- Technology area (CPC —)General
Abstract
A foundry mold member made from a plurality of sand practice bound together with a binder which is concentrated at the contact points between contiguous particles and consists essentially of gelatins having a Bloom rating less than about 175 Bloom grams. The sand particles are first coated with a sol of the gelatin, cooled to ambient temperature and conditioned to prescribed water content necessary to effect migration of the gelatin to the interparticle contact points upon heating of the coated particles in a pattern mold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.