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:
May. 17, 1988
Filed:
Apr. 15, 1986
Rupert Harreither, Baden, AT;
Austria Metall Aktiengesellschaft, Braunau am Inn, AT;
Abstract
The process comprises unrolling a metal band onto the circumference of a drum, pressing the metal band continuously onto the drum until the metal band surrounds the drum and the ends of the metal band overlap, clamping the metal band to the drum with a plurality of clamping members or a clamping belt, heating the metal band and drum, and in this condition cutting the metal band to length for welding, and working, welding and finishing the ends and edges of the metal band to form a smooth surface on the circumference of the drum. The apparatus for performing the process of the invention comprises a pivotal support for mounting the drum rotatably on a horizontal axis, a groove in the circumference of the drum at the position where the welding occurs, a rail, preferably copper, with a recess for release of a cutting tool and for a weld seam held in the groove, a plurality of pairs of clamping members mounted on a shoulder rim of the drum attachable by screws to the band, and a clamping mechanism connected between each of the clamping members of the pairs of clamping members to provide longitudinal tension to the metal band. As an alternative to the clamping members and the clamping mechanism the apparatus is provided with a clamping belt and a clamping frame to clamp the metal band to the drum.