Patent ID: 8283847

Claim:
An integrated-shaping discharge tubes for a one-shot-modeled compact fluorescent lamp (CFL) comprising a) a conveyer; b) straight discharge tubes, comprised of portions and disposed upon said conveyer for molding into a U-tube of a pair of leg tubes of a crescent shape with a same preset curvature radius in a same direction; c) a heater with three wide flame nozzles of different flaming temperatures, arranged physically in series for flaming different portions of said straight discharge tube for a period of different duration, depending on said preset curvature radius of said leg tubes; d) a pair of integrated-shaping dies, including a male die and a corresponding cavity, and a cross-section of a U-groove of each of dies is semi-circular; e) a mechanic arm controlling the opening-up and closing-off of said pair of integrated-shaping dies; wherein each of said discharge tubes disposed upon said conveyer is shipped into said heater and treated in portions of said discharge tube by one or more said wide flame nozzles of preset temperatures for a preset duration simultaneously into a U-tube with the pair of leg tubes for fitting into said pair of integrated-shaping dies when said mechanic arm opens up said pair of dies for receiving said U-tube, and closes off said pair of dies for moulding said U-tube within by blowing high pressure air to said U-tube said for forming a U-tube with the preset curvature radius.