Taphole knockout device
US6221313A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 15, 1999 |
| Grant date | Apr 24, 2001 |
| Priority date | — |
| Expiry date | Nov 15, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S266/01
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A knockout device for removing a taphole sleeve from a furnace wall. The device is comprised of a pneumatic hammer having an elongated body and a weight reciprocally movable by air pressure along the body. The body has a first end with an air inlet for receiving air under pressure from an external source and a second end. A metal block is attached to the second end of the body. The block has a planar surface dimensioned to rest upon an upper end of a taphole sleeve. A locating pin extends from the block. The pin is dimensioned to be received within an axial bore defined by the taphole sleeve. A housing surrounds the hammer and defines a cavity therearound. The housing has openings therethrough to allow air from the hammer to vent from the cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.