Fasteners with coated and textured pin members

Patent metadata

Field	Value
Publication number	US-9638236-B2
Application number	US-201514854223-A
Country	US
Kind code	B2
Filing date	Sep 15, 2015
Priority date	Sep 17, 2014
Publication date	May 2, 2017
Grant date	May 2, 2017

Abstract

A pin member for a fastener includes an elongated shank having a first end, a second end opposite the first end, a cylindrical shank portion having an outer surface, a head located at the first end of the elongated shank, the head including a bearing surface located on the bearing surface of the head, and a threaded portion located at the second end of the elongated shank. Either or both of the bearing surface of the head or the outer surface of the cylindrical shank portion is coated with a coating and/or is textured. The coating may be tungsten, molybdenum, copper, or a refractory ceramic. The textured surfaces may include a surface roughness greater than 0.5 micron.

First claim

What is claimed is:

1. A pin member, comprising:
an elongated shank having a first end, a second end opposite the first end, a cylindrical shank portion having an outer surface, a head located at the first end of the elongated shank, the head including a bearing surface located on the underside of the head, and a threaded portion located at the second end of the elongated shank,
wherein the bearing surface of the head is textured and coated with a coating, and
wherein the bearing surface of the head includes a surface roughness greater than 0.5 micron.

2. The pin member of claim 1 , wherein the coating is selected from the group consisting of tungsten, molybdenum, tantalum, niobium, and a refractory ceramic.

3. The pin member of claim 1 , wherein the coating is selected from the group consisting of copper and silver.

4. A pin member, comprising:
an elongated shank having a first end, a second end opposite the first end, a cylindrical shank portion having an outer surface, a head located at the first end of the elongated shank. the head including a bearing surface located on the underside of the head, and a threaded portion located at the second end of the elongated shank,
wherein the bearing surface of the head is coated with a coating, wherein the outer surface of the cylindrical shank portion is textured, and wherein the textured outer surface of the cylindrical shank portion includes a surface roughness greater than 0.5 micron.

5. The pin member of claim 4 , wherein the coating is selected from the group consisting of tungsten, molybdenum, tantalum, niobium, and a refractory ceramic.

6. The pin member of claim 4 , wherein the coating is selected from the group consisting of copper and silver.

7. A pin member, comprising:
an elongated shank having a first end, a second end opposite the first end, a cylindrical shank portion having an outer surface, a head located at the first end of the elongated shank, the head including a bearing surface located on the underside of the head, and a threaded portion located at the second end of the elongated shank,
wherein the bearing surface of the head is coated with a coating, wherein the outer surface of the cylindrical shank onion is textured and coated with the coating, and wherein the textured outer surface of the cylindrical shank portion includes a surface roughness greater than 0.5 micron.

8. The pin member of claim 7 , wherein the bearing surface of the head is textured.

9. The pin member of claim 7 , wherein the coating is selected from the group consisting of tungsten, molybdenum, tantalum, niobium, and a refractory ceramic.

10. The pin member of claim 7 , wherein the coating is selected from the group consisting of copper and silver.

11. A pin member, comprising:
an elongated shank having a first end, a second end opposite the first end, a cylindrical shank portion having an outer surface, a head located at the first end of the elongated shank, the head including a bearing surface located on the underside of the head, and a threaded portion located at the second end of the elongated shank,
wherein the bearing surface of the head is textured and coated with a coating, wherein the outer surface of the cylindrical shank portion is coated with the coating, and wherein the textured bearing surface of the head includes a surface roughness greater than 0.5 micron.

12. The pin member of claim 11 , wherein the outer surface of the cylindrical shank portion is textured.

13. The pin member of claim 11 , wherein the coating is selected from the group consisting of tungsten, molybdenum, tantalum, niobium, and a refractory ceramic.

14. The pin member of claim 11 , wherein the coating is selected from the group consisting of copper and silver.

15. A pin member, comprising:
an elongated shank having a first end, a second end opposite the first end, a cylindrical shank portion having an outer surface, a head located at the first end of the elongated shank, the head including a bearing surface located on the underside of the head, and a threaded portion located at the second end of the elongated shank,
wherein the bearing surface of the head is textured, and wherein the textured bearing surface of the head includes a surface roughness greater than 0.5 micron.

16. The pin member of claim 15 , wherein the cylindrical shank portion is coated with a coating.

17. The pin member of claim 16 , wherein the coating is selected from the group consisting of tungsten, molybdenum, tantalum, niobium, and a refractory ceramic.

18. The pin member of claim 16 , wherein the coating is selected from the group consisting of copper and silver.

19. The pin member of claim 16 , wherein the cylindrical shank portion is textured.

20. A pin member, comprising:
an elongated shank having a first end, a second end opposite the first end, a cylindrical shank portion having an outer surface, a head located at the first end of the elongated shank, the head including a bearing surface located on the underside of the head, and a threaded portion located at the second end of the elongated shank,
wherein the bearing surface of the head is textured,
wherein the outer surface of the cylindrical shank portion is textured and coated with a coating,
wherein the textured bearing surface of the head includes a surface roughness greater than 0.5 micron, and
wherein the textured outer surface of the cylindrical shank portion includes a surface roughness greater than 0.5 micron.

21. The pin member of claim 20 , wherein the coating is selected from the group consisting of tungsten, molybdenum, tantalum, niobium, and a refractory ceramic.

22. The pin member of claim 20 , wherein the coating is selected from the group consisting of copper and silver.

23. A pin member, comprising:
an elongated shank having a first end, a second end opposite the first end, a cylindrical shank portion having an outer surface, a head located at the first end of the elongated shank, the head including a bearing surface located on the underside of the head, and a threaded portion located at the second end of the elongated shank,
wherein the outer surface of the cylindrical shank portion is textured and coated with a coating, and
wherein the textured outer surface of the cylindrical shank portion includes a surface roughness greater than 0.5 micron.

24. The pin member of claim 23 , wherein the coating is selected from the group consisting of tungsten, molybdenum, tantalum, niobium, and a refractory ceramic.

25. The pin member of claim 23 , wherein the coating is selected from the group consisting of copper and silver.

26. A pin member, comprising:
an elongated shank having a first end, a second end opposite the first end, a cylindrical shank portion having an outer surface, a head located at the first end of the elongated shank, the head including a bearing surface located on the underside of the head, and a threaded portion located at the second end of the elongated shank,
wherein the outer surface of the cylindrical shank portion is textured, and
wherein the textured outer surface of the cylindrical shank portion includes a surface roughness greater than 0.5 micron.

Assignees

• Alcoa Inc
• Arconic Inc

Inventors

• Kamal Manish
• Haylock Luke
• Mulazimoglu Hasim
• Liebscher Andreas
• Rizza Gregory
• Pinheiro Rodrigo

Classifications

• F16B2019/045

  Coated rivets · CPC title

• F16B35/06

  Specially-shaped heads (special shape in order to rotate the bolt F16B23/00 {; separate hook adaptors for bolts F16B43/025}) · CPC title

• B64D45/02 Primary

  Lightning protectors; Static dischargers · CPC title

• F16B33/06

  Surface treatment of parts furnished with screw-thread, e.g. for preventing seizure {or fretting (corrosion preventing means F16B33/008; settable coatings for locking threaded members F16B39/225; deformable coatings for locking threaded members F16B39/34)} · CPC title

• F16B33/008 Primary

  Corrosion preventing means · CPC title