The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 21, 1981
Filed:
Feb. 08, 1980
Gerald D Evrard, Cannelton, IN (US);
Henry S Cook, Abilene, TX (US);
Anthony J Kamalich, Owensboro, KY (US);
Southwire Co., Carrollton, GA (US);
National Steel Corp., Pittsburgh, PA (US);
Abstract
This invention relates to a device for cleaning opposed walls of a furnace pit. The device comprises a plurality of rotating screw-type cutters for removing built-up deposits upon the opposed walls of the furnace pit, a plurality of linkage arms for carrying the plurality of rotating screw-type cutters, a plurality of air motors for independently adjusting the speed of each half of the plurality of rotating screw-type cutters along each opposed wall of the furnace pit, and universal joints for allowing floating adjustment of each of the plurality of rotating screw-type cutters against each opposed wall of the furnace pit. The device also comprises piston-cylinder arrangements for moving the plurality of rotating screw-type cutters into and out of engagement with the built-up deposits upon the opposed walls of the furnace pit, a plate for allowing lifting of the rotating screw-type cutters up and down along the opposed walls of the furnace pit, a crane for lifting the plate, a vacuum pump for sucking out deposits removed from the opposed walls of the furnace pit, and at least one overhead rail for allowing travel of the crane from one furnace pit to another furnace pit.