Blind tack fastener and methods of manufacture

Patent metadata

Field	Value
Publication number	US-11313398-B2
Application number	US-201916543704-A
Country	US
Kind code	B2
Filing date	Aug 19, 2019
Priority date	Aug 19, 2019
Publication date	Apr 26, 2022
Grant date	Apr 26, 2022

Abstract

The present disclosure provides a blind tack fastener. The blind tack fastener includes an elongated body having a first end and a second end opposite the first end. The blind tack fastener also includes a collar surrounding a portion of the elongated body. The blind tack fastener also includes a sleeve surrounding the elongated body and positioned between the second end of the elongated body and the collar. A region of the sleeve is band annealed.

First claim

What is claimed is:

1. A blind tack fastener comprising:
an elongated body having a first end and a second end opposite the first end, wherein the elongated body comprises a breakaway groove in the elongated body and a locking groove within the elongated body between the breakaway groove and the second end;
a collar surrounding the locking groove and the breakaway groove such that the collar extends beyond the breakaway groove toward the first end; and
a sleeve surrounding the elongated body and positioned between the second end of the elongated body and the collar, wherein a region of the sleeve is band annealed.

2. The blind tack fastener of claim 1 , wherein the region of the sleeve that is band annealed defines a crush region, and wherein the crush region is configured to deform into a bulb during installation of the blind tack fastener.

3. The blind tack fastener of claim 1 , wherein the region of the sleeve that is band annealed is positioned between a first sleeve end and a second sleeve end.

4. The blind tack fastener of claim 1 , wherein the region of the sleeve that is band annealed extends from a second sleeve end to a location between a first sleeve end and the second sleeve end such that a portion of the sleeve adjacent to the first sleeve end is not band annealed.

5. The blind tack fastener of claim 1 , wherein the region of the sleeve that is band annealed extends from a first sleeve end to a second sleeve end.

6. The blind tack fastener of claim 1 , further comprising:
a plurality of textured elements positioned on a bottom collar surface.

7. The blind tack fastener of claim 6 , wherein the plurality of textured elements comprise one of a straight line pattern, a diagonal line pattern, a sinusoidal line pattern, or a waffle pattern.

8. The blind tack fastener of claim 6 , wherein the plurality of textured elements comprise a plurality of grooves recessed in the bottom collar surface.

9. The blind tack fastener of claim 6 , wherein the plurality of textured elements comprise a plurality of protrusions extending outward from the bottom collar surface.

10. The blind tack fastener of claim 1 , wherein a color of the collar is different than a color of the elongated body and a color of the sleeve.

11. The blind tack fastener of claim 1 , wherein a top collar surface includes an angled surface, and wherein a diameter of the angled surface decreases in a direction towards a bottom collar surface to thereby form a recessed hole in the top collar surface.

12. The blind tack fastener of claim 11 , wherein an angle of the angled surface ranges from about 80 degrees to about 145 degrees.

13. The blind tack fastener of claim 1 , wherein the breakaway groove and the locking groove are located at a first portion of the elongated body having a first outer diameter, wherein the sleeve is in direct contact with a second portion of the elongated body having a second outer diameter that is larger than the first outer diameter.

14. The blind tack fastener of claim 13 , wherein the first portion and the second portion are formed as a singular component.

15. A blind tack fastener comprising:
an elongated body having a first end and a second end opposite the first end;
a collar surrounding a portion of the elongated body, wherein the collar includes a top collar surface and a bottom collar surface opposite the top collar surface, wherein the top collar surface includes an angled surface, and wherein a diameter of the angled surface decreases in a direction towards the bottom collar surface to thereby form a recessed hole in the top collar surface;
a plurality of textured elements positioned on the bottom collar surface; and
a sleeve surrounding the elongated body and positioned between the second end of the elongated body and the collar, wherein a color of the collar is different than a color of the elongated body and a color of the sleeve, and wherein a region of the sleeve is band annealed.

16. A method of manufacturing a blind tack fastener, the method comprising:
forming an elongated body having a first end and a second end opposite the first end, wherein the elongated body comprises a breakaway groove in the elongated body and a locking groove within the elongated body between the breakaway groove and the second end;
forming a collar having a top collar surface and a bottom collar surface opposite the top collar surface;
positioning the collar around the locking groove and the breakaway groove such that the collar extends beyond the breakaway groove toward the first end;
forming a sleeve having a first sleeve end and a second sleeve end opposite the first sleeve end, wherein a region of the sleeve is band annealed; and
positioning the sleeve between the second end of the elongated body and the collar.

17. The method of claim 16 , further comprising:
forming a plurality of textured elements on the bottom collar surface.

18. The method of claim 16 , further comprising:
changing a color of the collar to be different than a color of the elongated body and a color of the sleeve.

19. The method of claim 16 , wherein the breakaway groove and the locking groove are located at a first portion of the elongated body having a first outer diameter, wherein the sleeve is in direct contact with a second portion of the elongated body having a second outer diameter that is larger than the first outer diameter.

20. The method of claim 19 , wherein the first portion and the second portion are formed as a singular component.

Assignees

• Boeing Co

Inventors

• Simpson Blake A
• Morden Sean D

Classifications

• F16B19/1054 Primary

  the pull-mandrel or the like being frangible · CPC title

• F16B19/1063 Primary

  with a sleeve or collar sliding over the hollow rivet body during the pulling operation · CPC title

• F16B19/10

  fastened by expanding mechanically · CPC title