GB2416616A - Aircraft door handle alarm - Google Patents

Aircraft door handle alarm Download PDF

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Publication number
GB2416616A
GB2416616A GB0404328A GB0404328A GB2416616A GB 2416616 A GB2416616 A GB 2416616A GB 0404328 A GB0404328 A GB 0404328A GB 0404328 A GB0404328 A GB 0404328A GB 2416616 A GB2416616 A GB 2416616A
Authority
GB
United Kingdom
Prior art keywords
alarm system
alarm
sensor
door
arming
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB0404328A
Other versions
GB0404328D0 (en
Inventor
Christopher Yardley
Michael John Charles Farmer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=32050940&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=GB2416616(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Priority to GB0404328A priority Critical patent/GB2416616A/en
Publication of GB0404328D0 publication Critical patent/GB0404328D0/en
Priority to CNB2005800110937A priority patent/CN100543789C/en
Priority to US10/590,890 priority patent/US8121438B2/en
Priority to JP2007500279A priority patent/JP4589378B2/en
Priority to BRPI0508042-8A priority patent/BRPI0508042A/en
Priority to EP05717752A priority patent/EP1719084B1/en
Priority to CA2557512A priority patent/CA2557512C/en
Priority to AT05717752T priority patent/ATE495514T1/en
Priority to ES05717752T priority patent/ES2358909T3/en
Priority to PCT/GB2005/000607 priority patent/WO2005083647A1/en
Priority to DE602005006752T priority patent/DE602005006752D1/en
Priority to RU2006134278/09A priority patent/RU2383930C2/en
Publication of GB2416616A publication Critical patent/GB2416616A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64CAEROPLANES; HELICOPTERS
    • B64C1/00Fuselages; Constructional features common to fuselages, wings, stabilising surfaces or the like
    • B64C1/14Windows; Doors; Hatch covers or access panels; Surrounding frame structures; Canopies; Windscreens accessories therefor, e.g. pressure sensors, water deflectors, hinges, seals, handles, latches, windscreen wipers
    • B64C1/1407Doors; surrounding frames
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B41/00Locks with visible indication as to whether the lock is locked or unlocked

Abstract

An alarm system for an aircraft door comprises a sensor 37, for example a pressure or light sensor, for sensing when the door operating handle has been gripped by an operator, an audible alarm 35 associated with the sensor 37 and operable to sound when the sensor 37 detects that the handle has been gripped, and an arming device 32, 38 to arm the alarm when the aircraft door is armed.

Description

IMPROVEMENTS IN AIRCRAFT DOORS
This invention relates to aircraft doors of the type typically used on passenger transport aircraft, in particular the invention relates to an alarm system for alerting cabin crew when a door is "armed".
Doors of passenger transport aircraft are commonly fitted with inflatable slides to assist passenger evacuation in an emergency situation. Slides are typically stored in a bustle within the aircraft door.
Such slides may be detachable from the aircraft to be used as life rafts.
Prior to take off of an aircraft it is usual to "arm" the doors. This means a door is configured such that if it is opened, the emergency evacuation slide is released from the bustle. On release of the slide, gravity causes discharge of an associated gas pressurised cylinder which inflates the slide.
Whilst such a feature is desirable in the event of an emergency evacuation of the aircraft, if the armed door is opened while the aircraft is stationed at an airport, inflation and deployment of the slide can cause injury to airport ground crew. Also, once a slide has been deployed, the door cannot be operable as an emergency exit until the slide has been replaced, a consequence being that the number of passengers which can be safely transported by the aircraft is reduced. It will also be appreciated that repackaging and replacement of a slide is time consuming and expensive and is desirably avoided.
In order to avoid accidents or injury at airports, aircraft doors are fitted with one or more visual indicators of the status of the door, for example a door might include a light which displays in one colour when the door is armed and a different colour when the door is unarmed.
Alternatively, a door might include a slidable or rotatable handle which can be moved between a position marked "ARMED" and a position marked t e e c e.
e - e. e "DISARMED" and/or a slide placard which displays when the door is armed and is hidden when the door is not armed.
Whilst such indicators are generally effective, the inventors have recognised that in some circumstances a person might not register the indicator prior to acting to open the door. For example, the visual indicator may become obscured by another body, or a cabin crew member may be distracted when approaching the door and forget to check its status. As different aircraft have doors with different visual indicators, it is also conceivable that a cabin crew member operating on an aircraft of a type they have not previously encountered may misinterpret a visual indicator assuming a door to be disarmed when it is, in fact, armed.
It is an aim of the present invention to provide a novel aircraft door alarm system which alerts a door operator of the armed status of a door as the operator attempts to open the door.
In accordance with a first aspect, the present invention provides an alarm system for an aircraft door comprising; a sensor for sensing when the door operating handle is about to be gripped by an operator, an aural alarm associated with the sensor and operable to sound when the sensor detects that the handle is about to be gripped, means for arming the sensor and/or aural alarm when the aircraft door is armed.
The system may be incorporated into an operating handle for the door or may be retrofittable to an existing door handle. Most conveniently, the sensor may comprise a pressure sensor located on or in the handle which sensor responds to hand pressure of an operator gripping the ! e eve e e ce. c sea e en- ec. e e handle. Alternatively a sensor could be light, heat, humidity or chemically sensitive responding to contact with a characteristic of an operators hand.
The aural alarm is desirably electrically operated. The sound made by the alarm may be one or more tones, optionally a repeating sequence of tones. Alternatively, the alarm may broadcast a pre-recorded voice message indicating that the door is armed.
The means for arming the sensor and/or aural alarm may be manual or automatic. Desirably, arming is automatically effected when the door is armed. For example, the arming means may be mechanically, electrically, optically or magnetically coupled to an existing means for arming the door or an existing visual indicator for indicating the status of the door.
In one option, the arming means may include a sensor which is activated following a change in the status of the door. For example, the sensor may be a light sensor obscurable by an operating switch or handle for arming the door when the position of the switch or handle is changed.
In another example, the arming means may include a magnetically sensitive switch such as a Reed switch which is responsive to a magnetic field which changes when a door is switched between an armed and an unarmed configuration.
The alarm system may include its own power source, for example but not strictly limited to a dry cell. Alternatively, the alarm system may tap power from an existing power source used to power the door and/or aircraft.
Desirably, the alarm system includes its own indicator that it has been armed. Such an indicator may, for example, be a light emitting diode which lights or pulses when the system is armed.
ece ec e e C e ec. e c c .
e - ece cee e The system may be completely hard wired or may use one or more wireless connections between various of its components and/or existing components of the aircraft door. For example, there may be a blue tooth link between the sensor and alarm or between the means for activating the sensor and the sensor.
In another aspect, the invention comprises a handle for an aircraft door incorporating the previously described alarm system.
In yet another aspect, the invention comprises an aircraft door equipped with an alarm system as previously described.
For the purposes of illustration, one embodiment of the invention will now be further described with reference to the following Figures in which: Figure 1 illustrates the front face of an aircraft door as is known in
the prior art.
Figure 2 illustrates a handle for an aircraft door incorporating an embodiment of the alarm system of the invention.
Figure 3 illustrates a circuit diagram for an embodiment of an alarm system in accordance with the invention.
As can be seen from Figure 1 a typical aircraft door 1 (in this case a door used on a Boeing 757 aircraft) includes a viewing window 2, an operating handle 3 for opening and locking the door 1 and a door mode select panel 4a, 4b for arming and disarming the door 1. At the bottom of the door 1 is a bustle 5 in which an emergency evacuation slide (not shown) is stowed. Immediately above the bustle 5 is stowed a container . . e . . - of pressurized gas for inflating the slide in the event of an emergency. A pressure gauge 6 displays the pressure of the gas on the front of the door 1. A pair of handles 7 are provided towards the top and right of the door 1 which an operator can use to manoeuvre the door 1.
The door mode select panel 4a, 4b comprises an operating switch 4a and a position indicator 4b. The position indicator 4b illustrates the direction in which the switch 4a need be switched to respectively arm and disarm the door 1. Just above the operating handle 3 is a slide placard 8.
When the door 1 is disarmed, the slide placard is retained in the body of the door 1, flush with the surface of the door 1. When the door 1 is armed by appropriate operation of the switch 4a, the slide placard is caused to pop out of the door and display an indicator that the door is armed. At the top of the door 1 is an LED 9 which is lit when the door 1 is armed and not lit when the door 1 is disarmed. Thus there are three visual indicators (LED 9, slide placard 8 and display panel 4a, 4b) showing status of the door 1 as armed or disarmed.
Figure 2 shows the reverse side of a door operating handle 20 similar to that referenced 3 in Figure 1. The handle has a substantially C shaped cross section made up of walls 21a, 21b and the front surface (not shown) of the handle 20. A taller walled section 21b is provided at one end of the handle to allow attachment to the front of a door whilst providing a clearance around the remainder of the handle 20 so that it may be gripped.
Enclosed within the C section is an alarm system in accordance with the invention, 22, 23, 24, 25. Extending across a central portion of the handle is a pressure sensitive pad 22 enclosing an electrical circuit supplying the alarm system. Adjacent the pressure sensitive pad is an arming device 23 which is responsive to arming of an aircraft door to which the handle 20 is attached to arm the alarm system 22, 23, 24, 25.
e ace C . . . . . . Adjacent the arming device 23 is a speaker 24 of an alarm sounder.
The system is powered by a battery pack enclosed in a container 25.
It will be appreciated that the components of the system as described in relation to Figure 2 could be re-ordered without affecting the mode of operation of the invention.
Figure 3 shows a circuit diagram for an alarm system substantially similar to the embodiment illustrated in Figure 2. The circuit comprises a 9v dry power cell 31 which powers pressure sensor 37.
The system is armed through arming device 32, 38 which comprises a Reed switch 32 and ceramic magnet 38. The ceramic magnet 38 is associated with a slide placard of an aircraft door, the Reed switch being positioned, in use, in close proximity to the placard and magnet 38.
When a door to which the system is mounted is armed, the slide placard pops out and the magnetic field near the magnetically sensitive Reed switch 32 is magnified. The change in the field is such as to cause the switch 32 to close. The alarm system circuit is now armed. Once the system is armed but not activated (i.e. there is no detection of pressure by sensor 37) a battery saver circuit 33 pulses a low current supply to LED 34 which emits an intermittent light, this provides a visual indicator that the system is armed and in a "stand by" mode.
When the pressure sensor 37 is subjected to pressure, for example when the door handle is gripped, a sub circuit including the pressure sensor 37 and LED 34 is closed and the LED becomes permanently lit, taking current directly from the dry cell 31 indicating the alarm has been activated.
Simultaneously, a latch circuit 36 is closed and the latch circuit 36 grabs power from the cell 31. The active latch circuit 36 triggers the .e . . e C C .. broadcast of a timed, audible alarm, for example a pre-recorded voice message, through speaker/amplifier circuit 35.
Once the pressure sensor 37 is relieved of pressure, the supply conduits between the sensor 31 and each of the latch circuit 36 and LED 34 are closed, the alarm stops sounding and the LED reverts to blinking.
Once the door is disarmed, the slide placard reverts to the "disarmed" position withdrawing the magnet 38 from the Reed switch 32 causing the switch 32 to open. The alarm system is then disarmed and the door can be operated without setting off the aural alarm.
It is to be understood that the forgoing is merely representative of one embodiment which the alarm system of the invention may take, other embodiments will no doubt occur to the skilled addressee without the need for inventive thought and without departing from the scope of the invention as claimed in the appended claims.

Claims (26)

  1. ë e . . ..
    . . .
    An alarm system for an aircraft door comprising; a sensor for sensing when the door operating handle is about to be gripped by an operator, an aural alarm associated with the sensor and operable to sound when the sensor detects that the handle is about to be gripped, means for arming the sensor and/or aural alarm when the aircraft door is armed.
  2. 2. An alarm system as claimed in claim 1 which is embodied in a door operating handle for an aircraft door.
  3. 3. An alarm system as claimed in claim 1 or claim 2 wherein the sensor comprises a pressure sensor.
  4. 4. An alarm system as claimed in claim 1 or claim 2 wherein the sensor is a light sensor.
  5. 5. An alarm system as claimed in any preceding claim wherein the aural alarm is electrically operated.
  6. 6. An alarm system as claimed in claim 5 wherein the aural alarm sounds one or more tones.
  7. 7. An alarm system as claimed in claim 6 wherein the aural alarm sounds a repeating sequence of tones.
  8. 8. An alarm system as claimed in claim 5 wherein the alarm sounds a prerecorded voice message in one or more languages.
    cue e c c e c e e c c e c e e c eeee * e ace c e e c c C c e ce c e c
  9. 9. An alarm system as claimed in any preceding claim wherein the means for arming the sensor and/or aural alarm are automatic.
  10. 10. An alarm system as claimed in claim 9 wherein the arming means is mechanically, electrically, optically or magnetically couplable to an existing means for arming an aircraft door or an existing visual indicator for indicating the status of the aircraft door.
  11. 11. An alarm system as claimed in claim 10 wherein the arming means includes a sensor which is activated following a change in the status of the door.
  12. 12. An alarm system as claimed in claim 11 wherein the arming means sensor is a light sensor obscurable by an operating switch or handle for arming the door when the position of the switch or handle is changed.
  13. 13. An alarm system as claimed in claim 11 wherein the arming means includes a magnetically sensitive switch which is responsive to a magnetic field which changes when an aircraft door to which it is attachable is switched between an armed and an unarmed configuration.
  14. 14. An alarm system as claimed in claim 13 wherein the changing magnetic field is associated with a slide placard of an aircraft door to which the alarm system is attachable.
  15. 15. An alarm system as claimed in any preceding claim including its own power source.
  16. 16. An alarm system as claimed in claim 15 wherein the power source is a dry cell.
    c c c c c c c c c . . c -. c.
  17. 17. An alarm system as claimed in any of claims 1 to 14 wherein the alarm system is configured to tap power from an existing power supply of an aircraft door or aircraft to which it is attachable.
  18. 18. An alarm system as claimed in any of the preceding claims wherein the alarm system includes its own indicator that the system has been armed.
  19. 19. An alarm system as claimed in claim 18 wherein the arming system indicator is a light emitting diode which lights or pulses when the system is armed and ceases when the system is not armed.
  20. 20. An alarm system as claimed in any preceding claim wherein the system is hard wired.
  21. 21. An alarm system as claimed in any of claims 1 to 19 wherein the system includes one or more wireless connections between various of its components and/or existing components of an aircraft door to which it may be attached.
  22. 22. An alarm system as claimed in claim 21 wherein a blue tooth link is provided between the sensor and alarm or between the means for arming the sensor and the sensor.
  23. 23. An operating handle for an aircraft door incorporating the alarm system of any preceding claim.
  24. 24. An operating handle as claimed in claim 23 wherein the handle is substantially C shaped in cross section and one or more of the components of the alarm system are mounted in the C of the C shaped cross section. # c
    . c . ce ce
  25. 25. An aircraft door incorporating an operating handle as claimed in claim 23 or claim 24.
  26. 26. An alarm system substantially as described herein and with reference to the accompanying Figures 2 and 3.
GB0404328A 2004-02-27 2004-02-27 Aircraft door handle alarm Withdrawn GB2416616A (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
GB0404328A GB2416616A (en) 2004-02-27 2004-02-27 Aircraft door handle alarm
CNB2005800110937A CN100543789C (en) 2004-02-27 2005-02-12 Aircraft doors and be used for the warning system of aircraft doors
US10/590,890 US8121438B2 (en) 2004-02-27 2005-02-12 Aircraft doors
RU2006134278/09A RU2383930C2 (en) 2004-02-27 2005-02-21 Improvements in aeroplane doors
DE602005006752T DE602005006752D1 (en) 2004-02-27 2005-02-21 IMPROVEMENTS ON PLANE DOORS
EP05717752A EP1719084B1 (en) 2004-02-27 2005-02-21 Improvements in aircraft doors
BRPI0508042-8A BRPI0508042A (en) 2004-02-27 2005-02-21 alarm system and operating handle for an aircraft door, and, aircraft door
JP2007500279A JP4589378B2 (en) 2004-02-27 2005-02-21 Aircraft door improvements
CA2557512A CA2557512C (en) 2004-02-27 2005-02-21 Improvements in aircraft doors
AT05717752T ATE495514T1 (en) 2004-02-27 2005-02-21 IMPROVEMENTS TO AIRCRAFT DOORS
ES05717752T ES2358909T3 (en) 2004-02-27 2005-02-21 IMPROVEMENTS IN PLANE DOORS.
PCT/GB2005/000607 WO2005083647A1 (en) 2004-02-27 2005-02-21 Improvements in aircraft doors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0404328A GB2416616A (en) 2004-02-27 2004-02-27 Aircraft door handle alarm

Publications (2)

Publication Number Publication Date
GB0404328D0 GB0404328D0 (en) 2004-03-31
GB2416616A true GB2416616A (en) 2006-02-01

Family

ID=32050940

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0404328A Withdrawn GB2416616A (en) 2004-02-27 2004-02-27 Aircraft door handle alarm

Country Status (12)

Country Link
US (1) US8121438B2 (en)
EP (1) EP1719084B1 (en)
JP (1) JP4589378B2 (en)
CN (1) CN100543789C (en)
AT (1) ATE495514T1 (en)
BR (1) BRPI0508042A (en)
CA (1) CA2557512C (en)
DE (1) DE602005006752D1 (en)
ES (1) ES2358909T3 (en)
GB (1) GB2416616A (en)
RU (1) RU2383930C2 (en)
WO (1) WO2005083647A1 (en)

Cited By (3)

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Publication number Priority date Publication date Assignee Title
GB2425638A (en) * 2005-04-28 2006-11-01 Christopher Yardley Aircraft door handle alarm with remote arming
GB2524847A (en) * 2014-04-06 2015-10-07 Peter John Charles Spurgeon A door entry device
US9809313B2 (en) 2007-01-22 2017-11-07 Honeywell International Inc. Cabin altitude alerting systems and methods

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GB2416616A (en) * 2004-02-27 2006-02-01 Christopher Yardley Aircraft door handle alarm
DE102005060425B4 (en) * 2005-12-15 2013-03-28 Primion Technology Ag Door actuator
EP2108585B2 (en) * 2008-04-07 2015-02-11 Airbus Operations GmbH System and method for prevention of inadvertent escape slide deployment for an aircraft
DE102011086454A1 (en) 2011-11-16 2013-05-16 Airbus Operations Gmbh Monitoring device and method for monitoring a movement profile of a user in the area of an actuating element of an aircraft or spacecraft
US8686877B2 (en) * 2012-06-26 2014-04-01 The Boeing Company Directionally filtered indicator light
EP2878530B1 (en) * 2013-11-27 2019-02-27 Airbus Operations GmbH Warning circuitry and warning device for an aircraft
EP2974963B1 (en) 2014-07-18 2018-11-14 Airbus Operations GmbH Apparatus for operating a door of an aircraft, an aircraft having such an apparatus and method for operating a door of an aircraft
DE102015100880A1 (en) * 2015-01-21 2016-07-21 Airbus Operations Gmbh Retrofittable display device for indicating an activation status of an escape slide in an aircraft
CA3017774C (en) * 2016-04-05 2022-06-21 Airbus Operations Gmbh Retrofittable display device for displaying an activation status of an emergency chute in an aircraft
IT201600101548A1 (en) * 2016-10-12 2018-04-12 Romualdo Cozza Warning signaling and activation device and remember for everyday objects such as keys and wallet
RU184400U9 (en) * 2018-06-19 2018-12-07 Акционерное общество "ЦентрИнформ" ELECTRONIC RADIO FREQUENCY SEAL
DE102019107823B4 (en) 2019-03-27 2021-12-23 Airbus Operations Gmbh Cabin door system for an aircraft and an aircraft with at least one such cabin door system
US11745880B2 (en) 2020-01-17 2023-09-05 Goodrich Corporation Readiness indicator lights for evacuation slide

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DE19843594A1 (en) * 1998-09-23 2000-04-06 Valeo Gmbh & Co Schliessyst Kg Door handle for vehicle door which includes bearing bracket fixable at door and handle part swivelable at bracket with extension projecting inside of door
DE19924948A1 (en) * 1999-05-31 2002-09-19 Dieter Wittchow Device for indicating motor vehicle break-in, has sensor or mechanical switch mounted on door handle

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2425638A (en) * 2005-04-28 2006-11-01 Christopher Yardley Aircraft door handle alarm with remote arming
GB2425638B (en) * 2005-04-28 2010-06-30 Christopher Yardley Aircraft door handle alarm system
US9809313B2 (en) 2007-01-22 2017-11-07 Honeywell International Inc. Cabin altitude alerting systems and methods
GB2524847A (en) * 2014-04-06 2015-10-07 Peter John Charles Spurgeon A door entry device

Also Published As

Publication number Publication date
CN1942907A (en) 2007-04-04
EP1719084B1 (en) 2011-01-12
EP1719084A1 (en) 2006-11-08
JP4589378B2 (en) 2010-12-01
US20080284619A1 (en) 2008-11-20
WO2005083647A8 (en) 2007-04-19
BRPI0508042A (en) 2007-07-17
WO2005083647A1 (en) 2005-09-09
RU2383930C2 (en) 2010-03-10
CN100543789C (en) 2009-09-23
JP2007524546A (en) 2007-08-30
CA2557512A1 (en) 2005-09-09
RU2006134278A (en) 2008-04-20
ES2358909T3 (en) 2011-05-16
US8121438B2 (en) 2012-02-21
DE602005006752D1 (en) 2011-05-05
GB0404328D0 (en) 2004-03-31
CA2557512C (en) 2014-01-21
ATE495514T1 (en) 2011-01-15

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