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Lock

a technology of locks and doors, applied in the field of locks, can solve the problems of attendants in danger, passengers may attempt to force entry onto the flight deck, etc., and achieve the effect of further restricting the width of the access

Active Publication Date: 2021-03-25
AMSAFE BRIDPORT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The solution effectively delays an attempted breach of the flight deck door by at least 5 seconds, ensuring the safety of flight attendants and maintaining cockpit security without constraining access unnecessarily.

Problems solved by technology

Given the proximity of passenger seating to the aircraft flight deck door, there is a risk that a passenger may attempt to force entry onto the flight deck when the aircraft is airborne as the pilot steps to and from the flight deck for a toilet break.
However this places the flight attendant in danger and thus there is a need for a physical barrier device to protect the flight deck door.

Method used

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Examples

Experimental program
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Effect test

example 1

[0033]FIG. 1A illustrates a horizontal cross-section of one embodiment of the invention and shows the lock (101) (save the locking bar) fixed to one side of an access between an aircraft galley and flight deck and the locking bar (102) and barrier body (103) fixed to the opposing side of the access. The locking bar is held in the cavity (104) by the sliding pawl (105). The sliding pawl is biased into the cavity by the leaf spring (106). In FIG. 1A, movement of the leaf spring is prevented by the locking plate (107).

[0034]FIG. 1B illustrates a vertical cross-section of the embodiment of FIG. 1B showing the damper (108) operably attached to the locking plate such that the locking plate may raise from and fall behind the leaf spring. The sliding pawl comprises a lip (109) (shown in FIG. 1A). When the locking plate has been raised from behind the leaf spring, the sliding pawl may be pushed out of the cavity as the locking bar enters (and leaves) the cavity, and as the locking bar passes...

example 2

[0035]FIG. 2 illustrates a vertical cross-section of the second embodiment of the invention comprising a barrier body comprising more than one panel deployed using a roller (201) and track (202) mechanism with rollers fixed to opposite sides of each panel guided in tracks affixed to either side of the access to the flight deck from the galley. The locking pin (203) is biased into the cavity (204) by the spring (205). The locking pin is attached to the barrier body (206) and the cavity is formed in the track. The damped locking tongue releasing mechanism comprises a damper (not shown) operably connected to a locking tongue releasing tool (207). In this embodiment, the barrier body is pulled down from the ceiling and is locked when the locking pin (203) aligns with the cavity (204). In order to release the locking pin from the cavity, the locking tongue releasing tool is raised against the damper. The shapes of the locking tongue releasing tool and the locking pin are configured so th...

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PUM

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Abstract

A lock is provided for a secondary aircraft cockpit barrier. The lock has a locking tongue, a cavity for receiving the locking tongue, a locking retainer for retaining the locking tongue in the cavity, and a damped locking tongue releasing mechanism for releasing the locking retainer thereby unlocking the locking tongue from the cavity. The damped locking tongue releasing mechanism is damped such that releasing the locking retainer requires at least about 5 seconds.

Description

[0001]This U.S. application claims priority to European Patent Application No. 19199407, filed Sep. 24, 2019, and the contents of that prior application are incorporated herein by reference in their entirety.[0002]The invention relates to a lock, in particular to a lock for a secondary cockpit barrier, and a secondary cockpit barrier comprising the same and a barrier body for blocking access to an aircraft cockpit.[0003]The toilet facilities provided for pilots in modern aircraft are generally sited adjacent the flight deck but with no direct access from the flight deck requiring the pilot to egress the flight deck to avail themselves of the facilities. Given the proximity of passenger seating to the aircraft flight deck door, there is a risk that a passenger may attempt to force entry onto the flight deck when the aircraft is airborne as the pilot steps to and from the flight deck for a toilet break. In order to mitigate this risk, access to the flight deck door is blocked by a fli...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): E05B65/00B64C1/14
CPCE05B65/00B64C2001/009B64C1/1469B64D45/0015E05B2043/002E05B2043/007E05B43/00B64D11/0023E05B17/0041E05B77/44E05B17/2015
Inventor HOMEWOOD, JAMES BARRYPOLLOCK, TIMOTHY DAVID
Owner AMSAFE BRIDPORT LTD