Method for stretch wrapping of panels

Details Method for stretch wrapping of panels Method for stretch wrapping of panels

1974-07-18

1976-01-20

Mehr, Milton S.

Metal deforming

By use of non-deforming work-gripping clamp and relatively...

By individually non-deforming clamps

72342, B21D 1102

Patent

active

039330206

ABSTRACT:
A method of stretch wrapping metallic panels, particularly honeycomb structure sandwich panels, in which the panel is heated by passing an electrical current through it during the forming step. A pair of electrode tabs are joined to opposing edges of the panel and are gripped in gripper jaws which are slidable between tapered blocks so that as more tension is created in the panel, the jaws tighten. The electrical connections are made to the tapered blocks and current flows to the panel across the sliding joint and through the jaws.

REFERENCES:
patent: 2279964 (1942-04-01), Berliner
patent: 2325481 (1943-07-01), Crawford
patent: 2442268 (1948-05-01), Fields et al.
patent: 2443336 (1948-06-01), Waldie
patent: 2632493 (1953-03-01), Gray et al.
patent: 2824594 (1958-02-01), Gray
patent: 3021887 (1962-02-01), Maynard
patent: 3073373 (1963-01-01), Wheeler et al.
patent: 3077031 (1963-02-01), Fromson
patent: 3785788 (1974-01-01), Haggberg et al.
patent: 3788117 (1974-01-01), Chester et al.

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