Work holders – Plural holders to hold workpieces relative to each other – Workpieces parallel to each other
Patent
1986-10-03
1988-02-23
Watson, Robert C.
Work holders
Plural holders to hold workpieces relative to each other
Workpieces parallel to each other
269131, B23K 114
Patent
active
047265752
ABSTRACT:
Apparatus for aligning the confronting ends of two pipe sections having a joint therebetween comprising an anchor to which is secured one end of a clamp chain. A retainer carried by the anchor is attached to the chain at a zone which enables the chain to form a loop encircling one pipe section adjacent the joint. The loop carries a plurality of circumferentially spaced supports for supporting the other pipe section in a position to be welded to the first pipe section. The anchor and the retainer are relatively adjustable to enable the loop to be contracted and expanded.
REFERENCES:
patent: 3666159 (1972-05-01), Watson
patent: 3704503 (1972-12-01), Haywood
patent: 3705453 (1972-12-01), Olson
patent: 3944202 (1976-03-01), Dearman
patent: 4011979 (1977-03-01), Hayen et al.
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