Adapter for power tool installation of tangless helically coiled insert
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United States of America Patent
Stats
-
Jul 16, 1985
Grant Date -
N/A
app pub date -
Feb 21, 1984
filing date -
Feb 21, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A power-driven 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 recess of the insert, in order that the insert may be screwed into the tapped hole. A sleeve, concentric to the threaded mandrel, maintains the insert's helix angle for a smooth transition into the tapped hole. An adjusting nut adjusts the depth to which an insert may be installed and whereby a free spinning bearing contacts the parent material and automatically reverses the torque of the tool.
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