Claims
- 1. A drive nut to be used in a fastener assembly comprising:
a body having a first end, a second end, and an outer surface adapted for engagement by a driving tool; a threaded bore with a plurality of internal threads extending through the body; a plurality of protruding nibs extending from either the first end or the second end.
- 2. The drive nut according to claim 1 wherein the nibs have an engaging surface and a driving surface that are adapted for engaging a recess in a fastener.
- 3. The drive nut according to claim 1 wherein the engaging surface of the nibs is angled relative to the driving surface.
- 4. The drive nut according to claim 1 wherein the engaging surface of the nibs is flat relative to the driving surface.
- 5. The drive nut according to claim 1 wherein at least one of the nibs has a rectangular shape.
- 6. The drive nut according to claim 1 wherein at least one of the nibs has a non-rectangular shape.
- 7. A blind fastener system comprising:
a screw having a plurality of external threads and a head positioned at an end of the screw; a sleeve having a plurality of internal threads and a deformable sleeve face positioned at the end of the screw adjacent the head; a nut having a plurality of internal threads, an enlarged nut head positioned at an end of the nut, and a driving recess positioned within the enlarged nut head, wherein an end opposite the nut head is positioned on the screw adjacent to the sleeve; and a drive nut positioned on the screw adjacent the nut having an outer surface adapted for engagement by a driving tool and a plurality of protruding nibs extending from an end of the drive nut for engaging the driving recess of the nut.
- 8. The blind fastener system according to claim 7 further comprising an installation tool for engaging the drive nut and the screw, which holds the drive nut stationary and rotates the screw.
- 9. The blind fastener system according to claim 7 wherein the protruding nibs of the drive nut have an engaging surface and a driving surface which extend into the driving recess of the nut.
- 10. The blind fastener system of claim 9 wherein the engaging surface is angled.
- 11. The blind fastener according to claim 7 wherein at least one of the nibs of the drive nut has a rectangular configuration and the drive nut and the nut are made from a non-deformable material.
- 12. The blind fastener according to claim 7 wherein at least one of the nibs of the drive nut has a non-rectangular shape and the driving recess of the nut has a geometrical configuration that permits the nibs to be inserted into the driving recess.
- 13. A method for assembling a fastener system comprising the steps of:
threading a sleeve having a plurality of internal threads and a deformable sleeve face onto a screw; partially threading a nut having a plurality of internal threads and a head having a driving recess onto the screw; positioning a drive nut having a plurality of internal threads and a plurality of protruding nibs extending from an end of the drive nut onto the nut so that the protruding nibs are aligned and matingly engaged into the driving recess of the nut; and threading the engaged drive nut and nut onto the screw.
- 14. The method of claim 13 further comprising the step of dimpling an outer surface of the nut so that the nut is secured onto the screw.
CROSS-REFERENCE TO RELATED APPLICATION(S)
[0001] This application claims priority from Provisional application No. 60/232,336 filed Sep. 13, 2000.
Provisional Applications (1)
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Number |
Date |
Country |
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60232336 |
Sep 2000 |
US |