Sand injector retainer insert
US5299622A · kind A · utility
1Cited by
9References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 4, 1992 |
| Grant date | Apr 5, 1994 |
| Priority date | — |
| Expiry date | Dec 4, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22C15/245
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A blow tube unit includes a retainer insert assembly with a restrictor and an injector blow tip. The restrictor includes restricting means to prevent the communication of a thermosetting fluent material from a reservoir to a sand core mold in the absence of blow cycle pressure. Constructed from a single block of metal, the restrictor is detachably secured to a lower portion of the blow tube unit in order to allow for removal and cleaning. The injector blow tip is made from an elastomeric material and is detachably secured to a lower portion of the restrictor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.