Belleville washer nut plate

Patent metadata

Field	Value
Publication number	US-2016223133-A1
Application number	US-201514612453-A
Country	US
Kind code	A1
Filing date	Feb 3, 2015
Priority date	Feb 3, 2015
Publication date	Aug 4, 2016
Grant date	—

Abstract

An apparatus includes a nut plate with a plurality of retention tabs integrally attached to the nut plate. A spring assembly is contained with the plurality of retention tabs. The apparatus also includes a nut retained by the retention tabs.

First claim

1 . An apparatus comprising:
a nut plate; a plurality of retention tabs integrally attached to the nut plate; a spring assembly contained within the plurality of retention tabs, wherein the spring assembly comprises at least one Belleville washer; and a nut retained by the plurality of retention tabs.

2 . The apparatus of claim 1 , wherein the spring assembly comprises a plurality of Belleville washers.

3 . The apparatus of claim 1 , wherein the spring assembly is located between the nut and the nut plate.

4 . The apparatus of claim 3 further comprising a bolt containing a threaded portion, wherein the bolt extends through each of the nut plate, the spring assembly, and the nut, and further wherein the bolt is threadably engageable with the nut.

5 . The apparatus of claim 1 , wherein the retention tabs include a first set of retaining clips that engage with the nut.

6 . The apparatus of claim 5 , wherein the nut includes a second set of retaining clips that engage with the first set of retaining clips.

7 . The apparatus of claim 4 , wherein the nut comprises a stop extending from the nut, wherein the length of the stop is configured to touch the nut plate when a specific level of torque is applied to the bolt, and further wherein the stop prevents over-compression of the spring assembly past a specific amount of compression.

8 . The apparatus of claim 4 , wherein the nut plate includes a base mechanically fastened to an engine component.

9 . The apparatus of claim 8 , wherein the engine component includes an exhaust panel of a gas turbine engine.

10 . A nut plate assembly comprising:
a nut plate, a plurality of retention tabs integrally attached to the nut plate; a spring assembly contained within the plurality of retention tabs, wherein the spring assembly comprises at least one Belleville washer; a plurality of retaining clips extending from the retention tabs; a nut retained by the plurality of retaining clips; and a bolt capable of extending through each of the nut plate, the spring assembly, and the nut, wherein the bolt is threadably engageable with the nut.

11 . The nut plate assembly of claim 10 , wherein the spring assembly comprises a plurality of Belleville washers.

12 . The nut plate assembly of claim 10 , wherein the spring assembly is located between the nut and the nut plate.

13 . The nut plate assembly of claim 10 , wherein the plurality of retaining clips engage with the nut.

14 . The nut plate assembly of claim 13 , wherein the nut includes a second set of retaining clips that engage with the plurality of retaining clips extending from the retention tabs.

15 . The nut plate assembly of claim 10 , wherein the nut comprises a stop extending from the nut, wherein the length of the stop is configured to touch the nut plate when a specific level of torque is applied to the bolt, and further wherein the stop prevents over-compression of the spring assembly past a specific amount of compression.

16 . The nut plate assembly of claim 10 , wherein the nut plate includes a base mechanically fastened to an engine component.

17 . The nut plate assembly of claim 16 , wherein the engine component includes an exhaust panel of a gas turbine engine.

Assignees

• United Technologies Corp

Inventors

• Peters Donald W
• Slaney Brandon T
• Martinez Jr Gonazlo F

Classifications

• F05D2260/31

  Retaining bolts or nuts · CPC title

• F16F15/04

  using elastic means (single elements or their attachment F16F1/00 - F16F13/00); {(F16F15/023, F16F15/03 take precedence)} · CPC title

• F16B5/0241

  with the possibility for the connection to absorb deformation, e.g. thermal or vibrational · CPC title

• F16B37/044 Primary

  Nut cages · CPC title

• F16M13/02 Primary

  for supporting on, or attaching to, an object, e.g. tree, gate, window-frame, cycle · CPC title