Plug grip for fitting expansion plugs

Details Plug grip for fitting expansion plugs Plug grip for fitting expansion plugs

1985-03-15

1986-12-02

Watson, Robert C.

Metal deforming

By relatively movable offset tool-faces

With tool motion in fixed path

B21D 905

Patent

active

046255389

ABSTRACT:
The plug grip comprises a first and a second arms pivotally mounted together, with the first arm leading to a bearing shoe member and the second arm causing a raise of a screw of an expansion plug. The second arm comprises two successive bearing points, a first bearing point providing a great lever arm ratio for causing a start of bending of the expansion plug and a second bearing point providing a smaller lever arms ratio for increasing a distortion stroke of the expansion plug.

REFERENCES:
patent: 2329562 (1943-09-01), Stensrud
patent: 2530215 (1950-11-01), Zidar
patent: 3324700 (1967-06-01), Elliott

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