Blind fastener and drive nut assembly
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 25, 2003
Grant Date -
Jul 4, 2002
app pub date -
Nov 19, 2001
filing date -
Sep 13, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A blind fastener with an improved drive nut and assembly process. The blind fastener includes a screw, a sleeve, a nut, and a drive nut. The drive nut has a smooth bore and protruding nibs that mate precisely with a driving recess located in the nut head. An end of the drive nut opposite the nibs is deformed to retain the drive nut on the screw against the nut. Once the new assembly process for the blind fastener has been completed, the drive nut will have been mated with the nut head to prevent any rotation of the nut during installation of the blind fastener. The assembly process will now include placing the sleeve over the threads of the screw to a position adjacent the screw head. The nut is then threaded onto the screw adjacent the sleeve. The drive nut's protruding nibs are next aligned and physically engaged into the driving recess of the nut head by sliding the smooth bore over the screw. The end of the drive nut is deformed by an axial force applied by a hollow mandrel having a nosepiece thereby displacing a portion of the drive nut into the threads of the screw.
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