Tools – Wrench – screwdriver – or driver therefor – Having work engaging and force exerting portion inserted...
Patent
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.
Kato Spring Works Company, Ltd.
Keschner Irving
Meislin D. S.
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