Latch hooks, latch housings, and latch assemblies

Patent metadata

Field	Value
Publication number	US-9963237-B2
Application number	US-201414262463-A
Country	US
Kind code	B2
Filing date	Apr 25, 2014
Priority date	Apr 25, 2014
Publication date	May 8, 2018
Grant date	May 8, 2018

Abstract

Latch housing assemblies, latch hook assemblies, and latch assemblies are disclosed. Various disclosed latch housing assemblies include a latch pin coupled to an inner housing, and an outer housing having an inner surface coupled to an outer surface of the inner housing via at least one of a fuse pin and a spring. Various disclosed latch hook assemblies include a latch hook coupled to a latch housing, a weak point in the latch housing disposed between an inboard mount and an outboard mount, and a catch member mounted to the inboard mount and the outboard mount. Various disclosed latch assemblies include a latch housing, a bolt, and a deformable bushing at least partially surrounding the bolt, the deformable bushing configured to deform about a radius in response to a compressive load of about 1,000 lb f to about 3,000 lb f .

First claim

What is claimed is:

1. A latch housing assembly for an inner fixed structure of a gas turbine engine, the latch housing comprising:
an outer housing having a slotted hole, the outer housing having a receiving end and a non-receiving end, the outer housing having an inner surface and an outer surface, wherein the outer surface is coupled to a first half of the inner fixed structure, the slotted hole having a first endpoint and a second endpoint opposite the first endpoint, the first endpoint being closer to the non-receiving end;
an inner housing having a body portion and a base portion, wherein the body portion has an inner surface and an outer surface, wherein the base portion has an inner surface and an outer surface, and wherein the outer surface of the body portion is slideably engaged with the inner surface of the outer housing, the inner housing being received at the receiving end of the outer housing;
a fuse pin coupling the outer surface of the base portion of the inner housing to the inner surface of the outer housing; and
a latch pin coupled to the inner housing, wherein the inner housing is coupled to a second half of the inner fixed structure, the latch pin disposed within the slotted hole such that there is a gap distance between the latch pin and the second endpoint, the first endpoint and the second endpoint of the slotted hole limiting maximum lateral movement of the latch pin within the slotted hole thereby limiting maximum lateral movement of the inner housing in relation to the outer housing, wherein in response to a burst duct event applying pressure to the inner fixed structure, the inner fixed structure exerts a tensile load on the latch pin, causing the latch pin to exert a tensile load on the inner housing, causing the inner housing to exert a tensile load on the fuse pin.

2. The latch housing assembly of claim 1 , wherein the inner surface of the outer housing is connected to the outer surface of the base portion of the inner housing with the fuse pin, wherein the fuse pin is configured to fail between about 1,000 lb f to about 3,000 lb f .

3. An inner fixed structure comprising the latch housing assembly of claim 1 .

Assignees

• Rohr Inc

Inventors

• Pretty Michael Sean

Classifications

• E05C19/10

  Hook fastenings; Fastenings in which a link engages a fixed hook-like member · CPC title

• B64D29/06 Primary

  Attaching of nacelles, fairings or cowlings · CPC title

• Y10S292/65

  Emergency or safety · CPC title

• E05B17/0062

  with destructive disengagement · CPC title

• Y10T292/0945

  Operating means · CPC title