Patent ID: 7117709
Filing Date: 2006-10-10
Classification: E05D,F16C,Y10T

Abstract:
1. A method for producing a flange sleeve, comprising the steps of: cutting a band material to length to suit the circumference of the flange sleeve to be formed; rolling up the resultant cut band material into a hollow-cylindrical sleeve with a butt joint and longitudinally spaced edges; forming a flange flanged over on one or both ends of the cut and rolled up band material, whereupon the butt joint widens in the region of the flange to form a V-shaped slit; and forming one or more recesses in the region of the butt joint, said one or more recesses being formed on one or both longitudinal spaced edges of the cylindrical sleeve, which forms the outer circumference of the flange, and extends from the butt joint in the circumferential direction.