Patent ID: 7225654
Filing Date: 2007-06-05
Classification: B21C

Abstract:
1. A method for forming a tubular object, comprising the step of: engaging a strip of material, having a first edge and a second edge, about a series of rollers, such that the strip of material completes a revolution in an apparatus for forming tubular objects from a strip of material, wherein the apparatus comprises: a frame, wherein the frame includes a front plate and a rear plate connected to each other by a plurality of spacers; a plurality of adjustable arms, each of which individually are longitudinally extendable, are mounted about the front and rear plates and are positioned in a generally semi-circular arrangement about the frame, wherein two adjustable arms are correspondingly mounted relative to each other on the opposite plates; and a roller is rotatably coupled to each pair of adjustable arms that are correspondingly mounted relative to each other about the frame, such that each roller is individually positionable in a radial direction; and securing the first edge of the strip to the second edge of the strip in a helical fashion, thereby forming a tubular pipe.