IP Library Granted Patent US 8,225,477
Granted Patent B2
US 8,225,477 · App. 12/075,673 · Granted Jul 24, 2012

Fairing removal tool

Assignee: United Technologies Corporation
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Quick Facts
Patent No.
US 8,225,477
App. No.
12/075,673
Granted
Jul 24, 2012
Kind
B2
Abstract

A fairing removal tool and a method of using the tool provide for an improved method of removing a fairing from an engine inlet case. The fairing removal tool employs a hook and notch to engage the fairing and release the bonds joining the fairing to an inner structural element of the inlet case.

Claims (43)

1. A fairing removal tool comprising:

a handle;

a head, wherein the head has a width between 0.5 inches (1.3 cm) and 2 inches (5.1 cm), the head comprising:

a first end distal to the handle;

a second end proximate to the handle;

a hook located near the first end of the head;

a notch located near the hook and the first end and configured for engagement with a downstream end of a fairing; and

a prying radius extending substantially from the notch to the second end; and

an elongated shaft extending between the handle and the head.

2. The tool of claim 1 , wherein the prying radius comprises an effective prying edge and a prying relief.

3. The tool of claim 2 , wherein the effective prying edge has a length between 2 inches (5.1 cm) and four inches (10.2 cm).

4. The tool of claim 1 , wherein the hook and the notch are arranged so that the shaft and the handle of the tool do not contact an upstream end of a second fairing during engagement of the tool with a downstream end of a first fairing.

5. The tool of claim 1 , wherein the hook and the notch are arranged to allow fairing removal by an operator positioned at an upstream end of the fairing.

6. A fairing removal tool comprising:

a handle;

an elongated shaft extending from the handle; and

a head comprising:

a first end distal to the shaft;

a second end connected to the shaft;

a hook located near the first end of the head; and

a notch located near the hook and the first end and configured for engagement with a downstream end of a fairing, wherein an axis of the notch forms an angle of approximately 30° relative to a longitudinal axis of the shaft; and

a prying radius extending from the notch towards the second end, wherein the prying radius substantially extends from the first end to the second end.

7. The tool of claim 1 , wherein the hook, the notch, and the prying radius are arranged so that engagement of the tool to a downstream end of a fairing to be removed coupled with application of a force applied on the handle or shaft will release a bond between the fairing and an inner strut.

8. A method for removing a fairing from an inner strut of an engine inlet using a fairing removal tool with a handle, an elongated shaft and a head having a hook located distally from the handle, a notch located near the hook and a prying radius extending substantially from the notch to an end of the head proximate the shaft, the method comprising:

inserting the fairing removal tool into the engine inlet from a front side of the engine inlet;

engaging the hook and notch of the fairing removal tool at a first location on a first overhanging downstream end of the fairing;

applying a force on the shaft or handle of the fairing removal tool in a direction towards the fairing so that force is applied to the fairing by the hook and the prying radius of the head of the fairing removal tool;

reengaging the hook and notch of the fairing removal tool at additional locations on the first overhanging downstream end of the fairing and applying a force on the shaft or handle of the fairing removal tool in a direction towards the fairing at each additional location until a first bond between the fairing and the inner strut is released;

engaging the hook and notch of the fairing removal tool at a first location on a second overhanging downstream end of the fairing;

applying a force on the shaft or handle of the fairing removal tool in a direction towards the fairing so that force is applied to the fairing by the hook and the prying radius of the head of the fairing removal tool;

reengaging the hook and notch of the fairing removal tool at additional locations on the second overhanging downstream end of the fairing and applying a force on the shaft or handle of the fairing removal tool in a direction towards the fairing at each additional location until a second bond between the fairing and the inner strut is released; and

removing the fairing from engagement with the inner strut.

9. The method of claim 8 , wherein the prying radius of the fairing removal tool comprises an effective prying edge and a prying relief.

10. The method of claim 9 , wherein the effective prying edge has a length approximately equal to a length of a bond between a fairing to be removed and an inner strut attached to the fairing.

11. The method of claim 8 , wherein the hook and the notch of the fairing removal tool are arranged so that the shaft and the handle of the tool do not contact an upstream end of a second fairing during engagement of the tool with a downstream end of a first fairing or during application of force on the shaft or handle.

12. The method of claim 8 , wherein engaging the hooked end of a fairing removal tool at a first location on a first overhanging downstream end of the fairing and applying a force on a shaft or handle of the fairing removal tool in a direction towards the fairing is performed by an operator positioned at an upstream end of the fairing.

13. The method of claim 8 , wherein the head of the fairing removal tool has a width between 0.5 inches (1.3 cm) and 2 inches (5.1 cm).

14. The tool of claim 1 , wherein the prying radius is convex.

15. The tool of claim 1 , wherein the notch has a depth of 0.1 inches (0.25 cm) and a width of 0.07 inches (0.18 cm).

16. The tool of claim 1 , wherein the head has a length of 4 inches (10.2 cm).

17. The tool of claim 6 , wherein the prying radius is convex.

18. The tool of claim 6 , wherein the notch has a depth of 0.1 inches (0.25 cm) and a width of 0.07 inches (0.18 cm).

19. The tool of claim 6 , wherein the head has a length of 4 inches (10.2 cm).

Assignments (4)
CORRECTIVE ASSIGNMENT TO CORRECT THE AND REMOVE PATENT APPLICATION NUMBER 11886281 AND ADD PATENT APPLICATION NUMBER 14846874. TO CORRECT THE RECEIVING PARTY ADDRESS PREVIOUSLY RECORDED AT REEL: 054062 FRAME: 0001. ASSIGNOR(S) HEREBY CONFIRMS THE CHANGE OF ADDRESS. Recorded Mar 4, 2021
From: UNITED TECHNOLOGIES CORPORATION
To: RAYTHEON TECHNOLOGIES CORPORATION
Reel/Frame 055659/0001 →
CHANGE OF NAME Recorded Sep 4, 2020
From: UNITED TECHNOLOGIES CORPORATION
To: RAYTHEON TECHNOLOGIES CORPORATION
Reel/Frame 054062/0001 →
CONFIRMATORY LICENSE Recorded Sep 12, 2012
From: UNITED TECHNOLOGIES CORPORATION
To: NAVY, GOVERNMENT OF THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE , THE
Reel/Frame 028992/0184 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 13, 2008
From: ALEXANDER, PHILLIP
To: UNITED TECHNOLOGIES CORPORATION
Reel/Frame 020714/0466 →
Continuity (1)
Related Publication 20090229103A1 · Sep 17, 2009