Installation tool for tangless helically coiled insert

Details Installation tool for tangless helically coiled insert Installation tool for tangless helically coiled insert

1993-02-16

1995-10-10

Meislin, D. S.

Tools

Wrench, screwdriver, or driver therefor

Having work engaging and force exerting portion inserted...

81443, 81459, 292405, B23P 1904

Patent

active

054561450

ABSTRACT:
An insertion tool for a helically coiled wire insert of the type used for tapped holes in parent material that is generally softer than a fastener being screwed into the tapped hole, whereby a mandrel having a threaded lead portion and a pivotal pawl inserted in a groove below the threaded portion so that the pawl engages a cut out portion formed in the insert in order that the insert may be screwed onto the tapped hole. The driving face of the pivotal pawl has a cavity formed therein to capture the lead coil of the insert and prevent its axial movement during installation.

REFERENCES:
patent: 4553302 (1985-11-01), Cosenza et al.

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