Patent ID: 6280371
Filing Date: 2001-08-28
Classification: B23P,B65G,F16C,Y10T

Abstract:
A method of making a rigid roller, comprising the steps of:(a) inserting a first rigid outer tubular roller segment onto a rigid internal bridging connector, leaving a portion of said internal connector extending therefrom, said internal bridging connector being substantially shorter in length than the finished length of the roller;(b) plug welding through the surface of said first outer tubular segment to interconnect said internal bridging connector to said first outer tubular segment to prevent movement of said internal bridging connector relative to said first outer tubular segment;(c) inserting a second outer tubular segment onto said extended portion of said internal connector until the ends of said outer first and second tubular segments abut in adjacent alignment;(d) plug welding said second outer tubular segment to said internal connector to prevent movement of said internal connector within said second outer tubular segment;(e) fillet welding the abutting ends of said first and second outer tubular segments; and(f) after step (e), repeating steps (a) through (e) as needed to produce a roller of sufficient length, each repeating of steps (a)-(e) being performed with an additional rigid internal bridging member and an additional rigid tubular roller segment, wherein prior to commencing said repeating of steps (a)-(e), first inserting said additional rigid internal bridging connector onto one of said previously installed rigid tubular roller segments.