Fastener system for ignition prevention triggered by a lightning strike, structure comprising the fastener system, and method for manufacturing the structure

Patent metadata

Field	Value
Publication number	US-10524340-B2
Application number	US-201715486104-A
Country	US
Kind code	B2
Filing date	Apr 12, 2017
Priority date	Apr 13, 2016
Publication date	Dec 31, 2019
Grant date	Dec 31, 2019

Abstract

A fastener system for ignition prevention triggered by a lightning strike. The fastener has a fastener body and a fastener head, and a fastening member configured to be mounted on a portion of the fastener body, wherein the fastener and the fastening member are configured to fasten at least a first part and a second part between the fastener head and the fastening member, and the fastener comprises an electrically insulating material. A structure comprises the fastener system, the first part that faces an outside from where the lightning strike may hit the first part and the second part.

First claim

The invention claimed is:

1. A fastener system for ignition prevention triggered by a lightning strike, the fastener system comprising:
a fastener having a fastener body and a fastener head;
a fastening member configured to be mounted on a portion of the fastener body,
wherein the fastener and the fastening member are configured to fasten at least a first part and a second part between the fastener head and the fastening member, and
wherein the fastener comprises an electrically insulating material; and,
a sealing material provided on at least a portion of the fastener body other than the portion of the fastener body where the fastening member is mounted on the fastener body.

2. The fastener system according to claim 1 , wherein the fastener comprises of at least one of glass, ceramics and a composite polymer material.

3. The fastener system according to claim 1 , wherein the fastener comprises porcelain comprising at least one of clay, quartz and feldspar.

4. The fastener system according to claim 1 , wherein the fastener comprises a composite polymer material and comprises a central rod made of fiber reinforced plastic and an outer shed made of silicone rubber or ethylene propylene diene monomer rubber.

5. The fastener system according to claim 1 , wherein the fastener head is configured to protrude from a surface of the first part that is facing an outside from where a lightning strike may hit the first part, and the sealing material is only provided on a circumferential surface of the fastener body between the fastener head and the portion of the fastener body where the fastening member is mounted on the fastener body.

6. The fastener system according to claim 1 , wherein the fastener head has a decreasing diameter in a direction towards the fastener body and is configured to be at least partly sunk in a surface of the first part that is facing an outside from where a lightning strike may hit the first part, and the sealing material is only provided on a circumferential surface of the fastener head that is facing the fastening member and a circumferential surface of the fastener body between the fastener head and the portion of the fastener body where the fastening member is mounted on the fastener body.

7. The fastener system according to claim 1 , wherein the sealing material is a moisture-curing sealing material.

8. The fastener system according to claim 1 , wherein at least one of the sealing material and the fastening member comprises an electrically insulating material.

9. The fastener system according to claim 1 , wherein a force-fit or a form-fit mounting of the fastening member on the portion of the fastener body is provided.

10. The fastener system according to claim 1 , wherein the fastening member comprises an electrically insulating material.

11. A structure comprising:
the fastener system according to claim 1 ,
the first part that faces an outside from where a lightning strike may hit the first part, and
the second part.

12. The structure according to claim 11 , wherein at least one of the first part and the second part comprises an electrically insulating material, or wherein the second part is a part of a containment for ignitable substances, or both.

13. A method for manufacturing the structure according to claim 11 , the method comprising
providing the fastener body through the first and second parts; and
providing the fastening member at a portion of the fastener body to fix the first and second parts between the fastening member and the fastener head.

14. The structure according to claim 11 , wherein the second part is a part of a containment for ignitable substances.

15. The structure according to claim 14 , wherein at least one of the first part and the second part comprises an electrically insulating material.

16. A fastener system for ignition prevention triggered by a lightning strike, the fastener system comprising:
a fastener having a fastener body and a fastener head;
a fastening member configured to be mounted on a portion of the fastener body,
wherein the fastener and the fastening member are configured to fasten at least a first part and a second part between the fastener head and the fastening member,
wherein the fastener comprises an electrically insulating material, and,
wherein the fastener comprises porcelain comprising at least one of clay, quartz and feldspar.

17. A structure comprising:
the fastener system according to claim 16 ,
the first part that faces an outside from where a lightning strike may hit the first part, and
the second part.

18. A method for manufacturing the structure according to claim 17 , the method comprising:
providing the fastener body through the first and second parts; and
providing the fastening member at a portion of the fastener body to fix the first and second parts between the fastening member and the fastener head.

19. A fastener system for ignition prevention triggered by a lightning strike, the fastener system comprising:
a fastener having a fastener body and a fastener head;
a fastening member configured to be mounted on a portion of the fastener body,
wherein the fastener and the fastening member are configured to fasten at least a first part and a second part between the fastener head and the fastening member,
wherein the fastener comprises an electrically insulating material, and,
wherein the fastener comprises a composite polymer material and comprises a central rod made of fiber reinforced plastic and an outer shed made of silicone rubber or ethylene propylene diene monomer rubber.

20. A structure comprising:
the fastener system according to claim 19 ,
the first part that faces an outside from where a lightning strike may hit the first part, and
the second part.

21. A method for manufacturing the structure according to claim 20 , the method comprising:
providing the fastener body through the first and second parts; and
providing the fastening member at a portion of the fastener body to fix the first and second parts between the fastening member and the fastener head.

Assignees

• Airbus Operations Gmbh

Inventors

• Kaste Michael
• Weber Lutz

Classifications

• F16B33/004

  Sealing; Insulation (by means of washers F16B43/001) · CPC title

• F16B5/0642

  the plates being arranged one on top of the other and in full close contact with each other · CPC title

• B64F5/10

  Manufacturing or assembling aircraft, e.g. jigs therefor · CPC title

• H05F3/02 Primary

  by means of earthing connections · CPC title

• F16B5/04

  by means of riveting (rivets F16B19/04) · CPC title