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:
Dec. 26, 2000
Filed:
Feb. 09, 1999
Craig A Crees, Sioux City, IA (US);
Floyd C Egdorf, Sioux City, IA (US);
Robert S Jacobsen, Sioux City, IA (US);
Mike J Jordan, Sioux City, IA (US);
David R Lindgren, South Sioux City, NE (US);
Steven A Mathieson, Sioux City, IA (US);
Douglas G Milner, Sioux City, IA (US);
Larry L Minter, Jefferson, SD (US);
John R Sunderman, Omaha, NE (US);
Missouri Valley Steel Company, Sioux City, IA (US);
Abstract
A downdraft exhaust cutting table comprising an elongated cutting table having a cutting torch positioned thereover and which is movable along the length thereof to cut material positioned on the cutting table. An elongated exhaust duct is positioned beneath the cutting table and runs parallel to the length of the cutting table. The exhaust duct has a plurality of horizontally spaced-apart exhaust openings formed therein which close by a movable damper. In one embodiment, successive dampers are opened as a slag collection bucket moves along the length of the cutting table below the cutting torch. In a second embodiment, a plurality of ventilation zones are created by pivotal gates extending laterally outwardly from the exhaust duct and which are pivotally movable to permit slagger to pass therethrough.