Turbine engine assembly with nut device and thermal expansion compensation

Inventors: Christophe Paul Aupetit (Moissy-Cramayel, FR); Charles Joseph Leleu (Moissy-Cramayel, FR); Thierry Guy Xavier Tesson (Moissy-Cramayel, FR)

Assignee: SAFRAN CERAMICS

F02K1/04 F05D2260/31 F05D2260/941 F05D2300/5021

View Patent ↗

Loading inventors, assignments & file history…

Monitor This Case

Get email alerts when status or documents change.

Order Certified Copies

Most orders are placed with the USPTO same day — all within 24 business hours.

Order via The Patent Place →

Pre-filled with this patent's details

Quick Facts

Patent No.: US 12680520
App. No.: 18/860,742
Granted: Jul 14, 2026
Kind: B2

External Links

USPTO Patent Center↗ Full Patent PDF↗

Abstract

An assembly for a turbine engine having a longitudinal axis includes a first structural element and a nut device, the first structural element having a first hole and a second hole, and the nut device having a retainer fixed to an inner face of the first structural element, the retainer comprising at least a first recess and a second recess connected to one another by a connecting element, the first recess and the second recess each retaining a nut respectively aligned with the first hole and the second hole which are formed through the first structural element, the connecting element being, in whole or in part, adapted to compensate for a greater thermal expansion of the retainer than the thermal expansion of the first structural element.

Claims (14)

1 . An assembly for a turbine engine having a longitudinal axis, the assembly comprising a first structural element and a nut device, the first structural element comprising a first hole and a second hole, the nut device comprising a retainer fixed to an inner face of the first structural element, the retainer comprising at least a first recess and a second recess connected to one another by a connecting element, the first recess and the second recess each retaining a nut aligned respectively with the first hole and the second hole which are formed through the first structural element, the connecting element being adapted, in whole or in part, to compensate for a greater thermal expansion of the retainer than the thermal expansion of the first structural element.

2 . The assembly according to claim 1 , wherein the first recess and the second recess of the retainer of the nut device are spaced apart from each other in a first direction, the connecting element being deformable, in whole or in part, to compensate for the greater thermal expansion of the retainer between:

a rest state in which the connecting element is subjected to a first temperature and in which the connecting element is in a conformation having a first dimension in a second direction perpendicular to the first direction, and

an expanded state in which the connecting element is subjected to a second temperature which is higher than the first temperature and in which the connecting element is in a conformation having a second dimension-in the second direction, the second dimension being different from the first dimension.

3 . The assembly according to claim 2 , wherein the conformation of the connecting element in the rest state may be a bowing in the second direction and/or the conformation of the connecting element in the expanded state may be a bowing in the second direction.

4 . The assembly according to claim 1 , wherein the first structural element is made of a material whose coefficient of thermal expansion is lower than the coefficient of thermal expansion of a material in which the retainer of the nut device is made.

5 . The assembly according to claim 1 , the assembly comprising a second structural element applied to an outer face of the first structural element, the second structural element comprising a hole aligned with the first hole formed through the first structural element, the second structural element being fixed to the first structural element by a first screw which traverses the first hole formed through the first structural element and the hole formed through the second structural element, the first screw being screwed into the nut retained in the first recess of the retainer of the nut device.

6 . The assembly according to claim 5 , the assembly comprising a third structural element applied to an outer face of the first structural element, the third structural element comprising a hole aligned with the second hole formed through the first structural element, the third structural element being fixed to the first structural element by a second screw which traverses the second hole formed through the first structural element and the hole formed through the third structural element, the second screw being screwed into the nut retained in the second recess of the retainer of the nut device.

7 . The assembly according to claim 2 , wherein the connecting element of the retainer comprises a first portion which is deformable between the rest state and the expanded state, and a second portion which is less deformable than the first portion, the second portion being applied against the inner face of the first structural element, the second portion comprising a passage which comprises a guide portion extending in the first direction, the assembly further comprising a holding member which is fixed relative to the first structural element, the holding member comprising a cylindrical portion along a first axis which projects from the inner face of the first structural element, the cylindrical portion traversing the guide portion of the passage formed through the second portion of the connecting element.

8 . The assembly according to claim 7 , wherein the holding member comprises a first retention portion for retention in a first directional sense along the first axis, connected to a first end of the cylindrical portion, the first retention portion having a bearing face which bears, in the direction of the first axis, against a face of the second portion of the connecting element which is opposite to the first structural element.

9 . The assembly according to claim 7 , wherein the first structural element comprises a third hole, the cylindrical portion of the holding member traversing the third hole formed through the first structural element, the holding member comprising a second retention portion for retention in a second directional sense along the first axis, connected to a second end of the cylindrical portion, the second retention portion comprising a bearing face which bears, in the direction of the first axis, against an outer face of the first structural element.

10 . A method of assembling the assembly according to claim 1 , the method comprising:

applying the retainer of the nut device to the inner face of the first structural element such that the nut retained in the first recess and the nut retained in the second recess are respectively aligned with the first hole and the second hole which are formed through the first structural element;

fixing the retainer of the nut device to the first structural element.