Device for clamping fireproof plates in metal frames of slide-valve shutters
US4867428A · kind A · utility
10Cited by
3References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 3, 1988 |
| Grant date | Sep 19, 1989 |
| Priority date | — |
| Expiry date | Mar 3, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D41/34
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A clamping device for clamping a fireproof plate into a metal frame of slide gate includes a clamping jaw that can be pressed against the plate perimeter. A wedge-shaped member acts on the clamping jaw and is threaded onto a bolt that is rotatably positioned in the frame. The clamping jaw and the wedge-shaped member have engaging slots and keys that cause positive withdrawal of the clamping jaw upon loosening the wedge-shaped member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.