Fuse pin model differential or exclusion feature

Patent metadata

Field	Value
Publication number	US-10919619-B2
Application number	US-201816150900-A
Country	US
Kind code	B2
Filing date	Oct 3, 2018
Priority date	Nov 16, 2015
Publication date	Feb 16, 2021
Grant date	Feb 16, 2021

Abstract

A fastening system having differentiable components includes a first bushing with a first mating feature to be inserted within a first receiver. A first fuse pin with a second mating figure and being configured to shear upon the application of a first predetermined load is configured to be inserted into the first receiver and mate with the first mating feature of the first bushing. The first and second mating features correspond and permit the insertion of the first fuse pin into the first bushing within the first receiver to selectively connect components. The first bushing may prevent the complete insertion of a second fuse pin having a third mating feature into the first receiver. A second bushing having a fourth mating feature may permit the complete insertion of the second fuse pin into the second bushing positioned within a second receiver.

First claim

What is claimed is:

1. A fastening system having differentiable components, the system comprising:
a first bushing having a first mating feature positioned within an opening of a first receiver;
a first fuse pin comprising a head and a first projection, the first projection configured to be positioned within the first bushing, the first fuse pin configured to shear upon an application of a first predetermined load, the first fuse pin having a second mating feature, the first and second mating features comprise a second projection on a surface of the head of the first fuse pin and a recess on a surface of the first bushing; and
wherein the second mating feature corresponds to the first mating feature to permit insertion of the first projection of the first fuse pin into the first bushing within the first receiver to selectively connect a first component to a second component, wherein the first bushing is positioned between the first fuse pin and the first receiver.

2. The system of claim 1 , wherein the first and second components are parts of an aircraft.

3. The system of claim 2 , wherein the first component further comprises a dog house assembly and the second component further comprises a gear beam.

4. The system of claim 1 , wherein insertion of the first fuse pin into the first receiver aligns a plurality of apertures in the first fuse pin with a plurality of apertures in the first receiver.

5. The system of claim 4 , further comprising a plurality of fasteners inserted through the apertures of the first fuse pin and the first receiver to selectively connect the first fuse pin to the first receiver.

6. The system of claim 1 , further comprising a second fuse pin configured to shear upon an application of a second predetermined load, the second fuse pin having a third mating feature, wherein the third mating feature of the second fuse pin and the first mating feature of the first bushing prevents insertion of the second fuse pin into the first bushing within the first receiver to selectively connect the first component to the second component.

7. The system of claim 6 , wherein the second predetermined load differs from the first predetermined load.

8. The system of claim 6 , wherein the first fuse pin is configured to selectively connect together components of a first aircraft and the second fuse pin is configured to selectively connect together components of a second aircraft, the second aircraft and the first aircraft not being identical.

9. The system of claim 6 , further comprising a second bushing having a fourth mating feature positioned within an opening of a second receiver, wherein the fourth mating feature corresponds to the third mating feature to permit insertion of the second fuse pin into the second bushing within the second receiver to selectively connect two components.

10. The system of claim 9 , wherein the second mating feature of the first fuse pin and the fourth mating feature of the second bushing prevents insertion of the first fuse pin into the second bushing within the second receiver to selectively connect two components.

11. A method of providing a fastening system having differentiable components comprising:
providing a first bushing;
providing a first receiver configured to receive the first bushing;
providing a first fuse pin comprising a head and a first projection, the first projection configured to be positioned within the first bushing, the first fuse pin configured to shear upon an application of a first predetermined load, wherein the first bushing positioned within the first receiver is configured to receive the first fuse pin, and wherein the first bushing is configured to be positioned between the first receiver and the first fuse pin;
varying a feature on the first bushing with respect to the same feature on a second bushing; and
varying a feature of the first fuse pin to correspond with the feature varied on the first bushing, the features on the first bushing and the first fuse pin comprises a second projection on a surface of the head of the first fuse pin and a corresponding recess on a surface of the first bushing, wherein the first fuse pin may be inserted into the first bushing.

12. The method of claim 11 , further comprising inserting the first fuse pin into the first bushing within the first receiver to selectively connect together a first component and a second component.

13. The method of claim 12 , wherein the first and second components are parts of an aircraft.

14. The method of claim 12 , wherein the insertion of the first fuse pin into the first bushing positioned within the first receiver aligns a plurality of apertures of the first fuse pin with a plurality of apertures of the first receiver and further comprising inserting a plurality of fasteners through the plurality of apertures to selectively connect the first fuse pin to the first receiver.

15. The method of claim 11 , further comprising:
providing a second fuse pin, the second fuse pin configured to shear upon an application of a second predetermined load, the second predetermined load differing from the first predetermined load; and
varying a feature on the second fuse pin, wherein the varied feature prevents insertion of the second fuse pin into the first bushing to selectively connect together a first component and a second component.

16. The method of claim 11 , wherein the second projection of the first fuse ping fits within the recess of the first bushing when the first fuse pin is inserted into the first bushing.

17. The method of claim 11 , wherein the recess on the surface of the first bushing is within a shoulder of the first bushing, wherein the projection of the first fuse pin mates with the recess within the shoulder of the first bushing when the first fuse pin is inserted into the first bushing.

18. The method of claim 11 , further comprising:
providing a second bushing;
providing a second receiver configured to receive the second bushing; and
wherein the varied feature on the second bushing prevents insertion of the first fuse pin into the second bushing positioned within the second receiver.

19. A fastening system having differential components, the system comprising:
a first bushing, the first bushing having a first mating feature;
a first fuse pin comprising a head and a first projection, the first projection configured to be positioned within the first bushing, the first fuse pin having a second mating feature, the first and second mating features comprises a projection on a surface of the head of the first fuse pin and a recess on a surface of the first bushing;
a first receiver configured to receive the first bushing within an opening, the first bushing configured to receive the first fuse pin, wherein the first bushing is configured to be positioned between the first receiver and the first fuse pin;
a second fuse pin, the second fuse pin having a third mating feature;
wherein the second mating feature corresponds to the first mating feature to permit insertion of the first fuse pin into the first bushing within the first receiver to selectively connect a first component to a second component; and
wherein the third mating feature in combination with the first mating feature prevents the insertion of the second fuse pin into the first bushing within the first receiver to selectively connect the first component to the second component.

20. The system of claim 19 further comprising:
a second bushing, the second bushing having a fourth mating feature;
a second rec

Assignees

• Boeing Co

Inventors

• Christman David B

Classifications

• B64C25/001 Primary

  Devices not provided for in the groups B64C25/02 - B64C25/68 · CPC title

• F16B19/00

  Bolts without screw-thread; Pins, including deformable elements (in screwed connections F16B29/00); Rivets (means for preventing withdrawal F16B21/00) · CPC title

• B64D45/04

  Landing aids; Safety measures to prevent collision with earth's surface · CPC title

• F16B13/00

  Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose (nails F16B15/00; self-locking pins or bolts in general, stud-and-socket releasable fastenings F16B21/00; dowels or bolts for railroad sleepers E01B9/00; ans means for anchoring structural elements or bulkheads specially adapted to foundation engineering E02D5/74; bolts or dowels used while laying bricks or casting concrete sleepers E04B1/38; setting anchoring bolts in shafts, tunnels or galleries E21D20/00; anchoring bolts for shafts, tunnels or galleries E21D21/00) · CPC title