Weld backup mechanism for internal pipe welding apparatus

Details Weld backup mechanism for internal pipe welding apparatus Weld backup mechanism for internal pipe welding apparatus

1984-04-17

1985-12-03

Lin, Kuang Y.

Metal fusion bonding

Seam backup means

228 492, B23K 522, B23K 902

Patent

active

045561621

ABSTRACT:
A weld backup mechanism includes an arcuate backup ring segment spring mounted to a support plate for rotational displacement. A plurality of such mechanisms are fixed to clamping members of an internal line-up clamp for radial expansion and retraction therewith.

REFERENCES:
patent: 3110277 (1963-11-01), Dixon et al.
patent: 3937382 (1976-02-01), Cunningham et al.
patent: 4254856 (1981-03-01), Komatsu et al.
patent: 4363954 (1982-12-01), Rinaldi

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