Metal working – Method of mechanical manufacture – Assembling or joining
Patent
1996-11-06
1997-11-25
Lindsey, Rodney M.
Metal working
Method of mechanical manufacture
Assembling or joining
411 69, 411 70, 411 42, 411501, B23P 1100
Patent
active
056898738
ABSTRACT:
A temporary fastener that fastens two adjacent workpieces. The fastener includes a shank that extends through a hole of the workpieces. Extending from one end of the shank is a conical shaped head. The fastener also contains a pull stem which has a head located adjacent to the blind end of the shank. The stem head is pulled through the shank to expand and tightly fasten the shank to the workpieces. The fastener is removed by drilling through the head and the shank. The diameter of the conical shank head is smaller than the diameter of the drill so that part of the head does not become attached to the drill bit and scratch the workpiece. The conical shape of the head also reduces the volume of fastener material to further reduce the size and amount of chips produced during the drilling process. The tightly engaged shank prevents the fastener from rotating during the drilling operation.
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Allfast Fastening Systems, Inc.
Conley Fredrick
Lindsey Rodney M.
LandOfFree
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