Mechanical dissuasion device for a fluid assembly joint

Patent metadata

Field	Value
Publication number	US-12467386-B2
Application number	US-202318117949-A
Country	US
Kind code	B2
Filing date	Mar 6, 2023
Priority date	Mar 6, 2023
Publication date	Nov 11, 2025
Grant date	Nov 11, 2025

Abstract

A mechanical dissuasion device includes a sleeve body forming a cylindrical body portion, a first tab, a second tab, and opposing fastener mounts. The cylindrical body portion extends circumferentially about a center axis between and to a first circumferential end and a second circumferential end. The cylindrical body portion extends axially between and to a first axial end and a second axial end. The first tab is disposed at the first axial end and extends radially inward from the cylindrical body portion. The second tab is axially spaced from the first axial end and the second axial end and extends radially inward from the cylindrical body portion. The opposing fastener mount portions include a first fastener mount portion and a second fastener mount portion. The first fastener mount portion is disposed at the first circumferential end. The second fastener mount portion is disposed at the second circumferential end.

First claim

The invention claimed is:

1 . An assembly for an aircraft propulsion system, the assembly comprising:
a first fluid conduit including a first conduit body and a first threaded fitting, the first conduit body including a first end, the first threaded fitting disposed at the first end, the first threaded fitting extending between and to a first axial fitting end and a second axial fitting end; a second fluid conduit including a second conduit body and a second threaded fitting, the second conduit body including a second end, the second threaded fitting disposed at the second end, the second threaded fitting threadably engaged with the first threaded fitting; and a mechanical dissuasion device including a sleeve body forming a cylindrical body portion, a first tab, and a second tab,
the cylindrical body portion extending circumferentially about the first threaded fitting, the second threaded fitting, and a center axis of the sleeve body, the cylindrical body portion extending circumferentially between and to a first circumferential end and a second circumferential end, the first circumferential end circumferentially spaced from the second circumferential end, the cylindrical body portion extending axially between and to a first axial end and a second axial end,
the first tab extending from the cylindrical body portion at the first axial end, the first tab disposed at the first axial fitting end, and
the second tab extending from the cylindrical body portion at a position axially spaced from the first axial end and the second axial end, the second tab disposed at the second axial fitting end;
wherein the first threaded fitting includes a first exterior mechanical operating surface and the cylindrical body portion is disposed circumferentially and axially coincident with the first exterior mechanical operating surface; wherein the cylindrical body portion forms a slot between the first circumferential end and the second circumferential end, the slot extending from the first axial end to the second axial end; wherein the sleeve body further forms opposing fastener mount portions including a first fastener mount portion and a second fastener mount portion, the first fastener mount portion disposed at the first circumferential end and extending radially outward from the cylindrical body portion, the first fastener mount portion forming a first fastener aperture, the second fastener mount portion disposed at the second circumferential end and extending radially outward from the cylindrical body portion, the second fastener mount portion forming a second fastener aperture; wherein the mechanical dissuasion device further includes a fastener extending through the first fastener aperture and the second fastener aperture, the fastener configured to control a size of the slot; wherein the mechanical dissuasion device further includes a locking device fixedly attached to the fastener, the locking device configured to maintain the fastener in a fixed position; and wherein the locking device includes a locking wire extending between and to a first wire end and a second wire end, the locking wire fixedly attached to the second threaded fitting at the first wire end and the locking wire fixedly attached to the fastener at the second wire end.

2 . The assembly of claim 1 , wherein the first fluid conduit and the second fluid conduit form a fluid seal therebetween.

3 . The assembly of claim 1 , wherein the first threaded fitting is rotatably mounted to the first conduit body.

4 . The assembly of claim 1 , wherein the second threaded fitting includes a second exterior mechanical operating surface, and the cylindrical body portion is disposed circumferentially and axially coincident with the second exterior mechanical operating surface.

5 . The assembly of claim 1 , wherein the first exterior mechanical operating surface forms a portion of a hexagonal pattern.

Assignees

• Pratt & Whitney Canada

Inventors

• Savard Philippe
• Lefebvre Guy
• Synnott Remy

Classifications

• F16L19/005

  comprising locking means for the threaded member · CPC title

• F16L55/10

  Means for stopping flow in pipes or hoses (F16L29/00, F16L37/28 take precedence; valves F16K) · CPC title

• F05D2260/36

  by a form fit connection, e.g. by interlocking · CPC title

• B64D27/10

  of gas-turbine type  (jet aircraft B64D27/16) · CPC title

• F16L2201/20

  Safety or protective couplings · CPC title