IP Library › Granted Patent US 11,148,175
Granted Patent B2
US 11,148,175 · App. 15/630,990 · Granted Oct 19, 2021

Nutplate rotary abrasion tool

Inventors: Kevin Aaron Coffey (Grapevine, TX); David Haynes Coleman (Fort Worth, TX); Stuart C. Street (Aledo, TX); Steven E. Twaddle (Aledo, TX)
Assignee: Lockheed Martin Corporation
B08B1/04B24B7/16B24B23/02B24B23/08B24B7/186B25B21/00
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Quick Facts
Patent No.
US 11,148,175
App. No.
15/630,990
Granted
Oct 19, 2021
Kind
B2
Abstract

A system includes an abrasion component containing an abrasion pad configured to clean a faying surface of a nutplate and a shaft attached to the abrasion pad and configured to rotate the shaft and the abrasion pad during cleaning of the nutplate, which includes abrading the faying surface with the abrasion pad. The system further includes a base configured to attach to a pressure applicator, and the pressure applicator, which is configured to attach to the base, hold the nutplate such that the faying surface is capable of contacting the abrasion pad during the cleaning of the nutplate, and apply pressure to the nutplate such that the nutplate contacts the abrasion pad during the cleaning of the nutplate. Furthermore, the abrasion component is configured to rotate the abrasion pad within at least one of the base and the pressure applicator during the cleaning of the nutplate.

Claims (28)

1. A system, comprising:

an abrasion component, comprising:

an abrasion pad configured to clean a faying surface of a nutplate; and

a shaft attached to the abrasion pad and configured to rotate the abrasion pad during cleaning of the nutplate, wherein cleaning the nutplate comprises abrading the faying surface with the abrasion pad;

a base comprising one or more first grooves, the base configured to attach to a pressure applicator; and

the pressure applicator, the pressure applicator comprising:

a housing comprising one or more externally located first protrusions and one or more internally located second grooves; and

a nutplate holder comprising one or more externally located second protrusions, wherein the one or more second grooves and the one or more second protrusions are configured to permit the nutplate holder to slide at least partially within the housing and to apply pressure to the nutplate such that the faying surface contacts the abrasion pad during the cleaning of the nutplate;

wherein the abrasion component is configured to rotate the abrasion pad within at least one of the base and the pressure applicator during the cleaning of the nutplate; and

wherein the one or more first grooves of the base and the one or more first protrusions of the pressure applicator are configured to permit the pressure applicator to at least partially slide into the base and at least partially rotate within the base, thereby securely locking the nutplate between the pressure applicator and the base.

2. The system of claim 1 , wherein each of the housing and the nutplate holder of the pressure applicator comprises an opening configured to accept a protrusion attached to the nutplate during the cleaning of the nutplate.

3. The system of claim 1 , wherein the abrasion pad and the shaft each comprise an opening configured to accept a protrusion attached to the nutplate during the cleaning of the nutplate.

4. The system of claim 1 , wherein the abrasion pad is detachable from the shaft.

5. The system of claim 1 , wherein the pressure applicator further comprises a spring configured to apply pressure to the nutplate holder during the cleaning of the nutplate.

6. The system of claim 1 , wherein the base comprises:

a platform configured to attach to the pressure applicator; and

a bearing configured to contact the shaft during the cleaning of the nutplate.

7. The system of claim 6 , wherein the base further comprises a washer configured to secure the bearing between the washer and the platform.

8. The system of claim 1 , wherein the nutplate holder further comprises a rectilinear depression configured to seat a portion of the nutplate such that faying surface of the nutplate can be abraded by the abrasion pad.

9. A system, comprising:

an abrasion pad configured to clean a faying surface of a nutplate;

a base comprising one or more first grooves, the base configured to:

attach to a pressure applicator; and

hold the abrasion pad within at least one of the base and the pressure applicator during cleaning of the nutplate, wherein cleaning the nutplate comprises abrading the faying surface with the abrasion pad; and

the pressure applicator, the pressure applicator comprising:

a housing comprising one or more externally located first protrusions and one or more internally located second grooves; and

a nutplate holder comprising one or more externally located second protrusions, wherein the one or more second grooves and the one or more second protrusions are configured to permit the nutplate holder to slide at least partially within the housing and to apply pressure to the nutplate such that the faying surface contacts the abrasion pad during the cleaning of the nutplate;

wherein the one or more first grooves of the base and the one or more first protrusions of the pressure applicator are configured to permit the pressure applicator to at least partially slide into the base and at least partially rotate within the base, thereby securely locking the nutplate between the pressure applicator and the base.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 23, 2017
From: COFFEY, KEVIN AARON; COLEMAN, DAVID HAYNES; STREET, STUART C.; TWADDLE, STEVEN E.
To: LOCKHEED MARTIN CORPORATION
Reel/Frame 042793/0019 →
Continuity (1)
Related Publication 20180369873A1 · Dec 27, 2018
Cited By (1)
US 12,297,856