US PATENT SUBCLASS 72 / 391.4
.~.~.~ Tool inside hollow fastener

Current as of: June, 1999
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72 /   HD   METAL DEFORMING

380  DF  BY RELATIVELY MOVABLE OFFSET TOOL-FACES (E.G., FOR BENDING OR DRAWING) {4}
386  DF  .~ With tool motion in fixed path {3}
391.2  DF  .~.~ Concentric or telescoped tools {1}
391.4.~.~.~ Tool inside hollow fastener {2}
391.6  DF  .~.~.~.~> With fastener loader or supply
391.8  DF  .~.~.~.~> Helically ribbed tool

DEFINITION

Classification: 72/391.4

Tool inside hollow fastener:

(under subclass 391.2) Device wherein a first tool engages an annular end surface of a tube-like workpiece, which surface generally faces the device, which tool includes a passageway coaxial with the tubular axis of the workpiece, and wherein a second tool extends through the passageway of the first tool and through at least a portion of the interior of the tube-like workpiece and engages the workpiece to deform the workpiece by movement relative to the first tool.

SEE OR SEARCH CLASS

29, Metal Working,

243.518, for metal deforming by a tool inside a hollow workpiece to effect assembly by overedge bending wherein two workpieces are engaged (recognized) for relative movement or relative securement; and subclasses 243.519+ for a device including a tool that engages a tubular member and a member inside that tubular member to relatively move the members and effect repositioning and deformation thereof, particularly subclasses 243.521+ for a driver for a snap-off-mandrel fastener.