Patent · US Expired

Apparatus for plugging holes in an electric smelting furnace or the like

US4072250A · kind A · utility

2Cited by

6References

2Claims

0Family size

Assignee

Elkem-Spigerverket a/s · NO

Inventors

Thor Pedersen · Kristiansand, NO
Aksel E. Kristiansen · Oslo, NO

Key dates

Filing date	Jul 15, 1976
Grant date	Feb 7, 1978
Priority date	—
Expiry date	Jul 15, 1996

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF27D3/1536
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

An apparatus for plugging holes in an electric smelting furnace or the like is disclosed. The apparatus comprises first and second tubular members, the second being adapted to be secured to the first by means of two assemblies mounted exterior of the tubes each of which may serve as either a release or a pivotal element about which the second tubular member may be rotated to facilitate loading and/or cleaning of either tubular member. A piston is provided which travels substantially the longitudinal extent of the first tubular member to extrude, under pressure, a material suitable for plugging a hole.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.