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US4909247A Expired / Lapsed US ⏱️ 0.0 years remaining

Aircraft emergency breathing assembly

Assignee: Avox Systems Inc
•
Filing: 1988-05-06
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Granted: 1990-03-20
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Expires: 2008-05-06
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Abstract

Abstract An emergency breathing assembly adapted for use in an aircraft to automatically present a breathing mask to a user upon a loss of cabin pressurization. The assembly includes a storage container having an access opening for deployment of the mask stowed within the container. The container is mounted in the aircraft cabin such that the access opening is positioned in a generally vertical plane of orientation relative to the user. The assembly further includes a door connected to the container for closing the access opening and thereby retaining the mask therein, means for moving the door from a closed to an open position relative to the access opening in response to a change in cabin pressurization, and means automatically operable upon movement of the door to an open position to eject the mask from the container through the access opening.

Inventors

  • 👤 Patrick R. Terrisse
  • 👤 James W. Ballinger

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 22:33
CPC Classifications
A; A62; A62B; A62B25/00; A62B25/005; B; B64; B64D; B64D11/00; B64D2231/00; B64D2231/02; B64D2231/025

Claims Analysis

Total Claims: 15
Claim 1
Independent Claim 209 words
An aircraft emergency breathing assembly automatically operable to present a breathing face mask to a user upon a loss of cabin pressurization, said assembly comprising: a storage container having an access opening and adapted to be mounted in an aircraft cabin with said opening in a generally vertical plane of orientation; fluid valve means carried by said container, said valve means being adapted for connection to a source of breathing fluid; a face mask stowed in said container, said mask being operatively connected to said valve means to provide breathing fluid to a user; a door connected to said container for closing said access opening and thereby retaining said mask within said container; door opening means automatically operable to move said door from a closed position to an open position relative to said access opening in response to a loss of cabin pressurization; and mask ejection means in the form of a flexible liner connected to said door, said mask ejection means being automatically operable in response to movement of said door to said open position to cause said flexible liner to eject said mask from said container through said access opening and beyond said door to enable gravity influenced dropping of said mask toward a position of use.
Claim 2
Dependent Claim 209 words
An aircraft emergency breathing assembly automatically operable to present a breathing face mask to a user upon a loss of cabin pressurization, said assembly comprising: a storage container having an access opening and adapted to be mounted in an aircraft cabin with said opening in a generally vertical plane of orientation; fluid valve means carried by said container, said valve means being adapted for connection to a source of breathing fluid; a face mask stowed in said container, said mask being operatively connected to said valve means to provide breathing fluid to a user; a door connected to said container for closing said access opening and thereby retaining said mask within said container; door opening means automatically operable to move said door from a closed position to an open position relative to said access opening in response to a loss of cabin pressurization; and mask ejection means in the form of a flexible liner connected to said door, said mask ejection means being automatically operable in response to movement of said door to said open position to cause said flexible liner to eject said mask from said container through said access opening and beyond said door to enable gravity influenced dropping of said mask toward a position of use.
Claim 3
Dependent Claim 48 words
An emergency breathing assembly as set forth in claim 1, wherein said flexible liner supports said mask thereon when said mask is stowed in said container, said liner being drawn sufficiently tight to eject said mask from said container upon movement of said door to said open position.
Claim 4
Dependent Claim 14 words
An emergency breathing assembly of claim 2, wherein said liner is a fabric material.
Claim 5
Dependent Claim 87 words
An emergency breathing assembly as set forth in claim 2, wherein said door is pivotally connected at one end to said container adjacent the lower edge of said access opening, said liner being connected at one end thereof to said container adjacent to the upper edge of said access opening and at the other end thereof adjacent the other end of said door whereby when said door moves from said closed to an open position said liner is drawn taut thereby ejecting said mask from said container.
Claim 6
Dependent Claim 48 words
An emergency breathing assembly as set forth in claim 4, wherein said door opening means includes spring means for urging said door to an open position, said spring means being operable to aid in drawing said liner taut upon movement of said door to a full open position.
Claim 7
Dependent Claim 88 words
An emergency breathing assembly as set forth in claim 5 wherein said spring means comprising a spring loaded bar secured to said container adjacent the connection between the door and the container and positioned between said liner and said door to bear against the latter when said door is in said closed position, said spring loaded bar moving said door to a partially open position and being held against further opening movement with said door thereby tensioning said liner as said door moves to a fully open position.
Claim 8
Dependent Claim 29 words
An emergency breathing assembly as set forth in claim 1 wherein said door opening means includes spring means urging said door from said closed position to an open position.
Claim 9
Dependent Claim 38 words
The emergency breathing assembly of claim 1 wherein a plurality of face masks are stowed in said storage container, said mask ejecting means being operable to eject all of said masks from said container through said access opening.
Claim 10
Dependent Claim 37 words
An emergency breathing assembly as set forth in claim 1 further including latch means for releasably holding said door in said closed position, said latch means being operable to release said door upon loss of cabin pressurization.
Claim 11
Independent Claim 175 words
A method of deploying an aircraft emergency breathing face mask from a stowed position within a storage container to a position beyond the container to enable subsequent gravity influenced dropping of the face mask to a user, the container being provided with a flexible liner, the face mask initially being positioned within the container in such a manner as to inhibit gravity dropping of the mask from the container, the container being of the type having an access opening in a generally vertical plane of orientation, the opening normally being closed by a door which opens automatically in response to a drop in cabin pressurization, a portion of the liner being attached to the door, comprising the steps of: stowing the mask on a flexible liner within the container; and tensioning the liner automatically in response to movement of the door from a closed to an open position in a manner expelling the mask from the container through the access opening to a position enabling subsequent gravity influenced dropping of the mask to a user.
Claim 12
Independent Claim 175 words
A method of deploying an aircraft emergency breathing face mask from a stowed position within a storage container to a position beyond the container to enable subsequent gravity influenced dropping of the face mask to a user, the container being provided with a flexible liner, the face mask initially being positioned within the container in such a manner as to inhibit gravity dropping of the mask from the container, the container being of the type having an access opening in a generally vertical plane of orientation, the opening normally being closed by a door which opens automatically in response to a drop in cabin pressurization, a portion of the liner being attached to the door, comprising the steps of: stowing the mask on a flexible liner within the container; and tensioning the liner automatically in response to movement of the door from a closed to an open position in a manner expelling the mask from the container through the access opening to a position enabling subsequent gravity influenced dropping of the mask to a user.
Claim 13
Dependent Claim 214 words
An aircraft emergency breathing assembly automatically operable to present a face mask to a user upon loss of cabin pressurization; said assembly comprising: a storage container having an access opening, the storage container being adapted to be mounted in an aircraft cabin with the access opening in a generally vertical plane of orientation; a face mask stowed in the storage container, the face mask being capable of providing breathing fluid to a user; a door connected to the storage container for movement between closed and open positions, the door closing the access opening when in the closed position to thereby retain the face mask within the storage container; door opening means for automatically moving the door from the closed position to the open position relative to said access opening in response to a loss of cabin pressurization; and mask ejection means in the form of a flexible liner connected to said door, said mask ejection means being automatically operable in response to movement of the door from the closed position to the open position to cause said flexible liner to initially eject the face mask from the storage container through the access opening to a position beyond the door, the face mask subsequently dropping under the influence of gravity to a position of use.
Claim 14
Dependent Claim 214 words
An aircraft emergency breathing assembly automatically operable to present a face mask to a user upon loss of cabin pressurization; said assembly comprising: a storage container having an access opening, the storage container being adapted to be mounted in an aircraft cabin with the access opening in a generally vertical plane of orientation; a face mask stowed in the storage container, the face mask being capable of providing breathing fluid to a user; a door connected to the storage container for movement between closed and open positions, the door closing the access opening when in the closed position to thereby retain the face mask within the storage container; door opening means for automatically moving the door from the closed position to the open position relative to said access opening in response to a loss of cabin pressurization; and mask ejection means in the form of a flexible liner connected to said door, said mask ejection means being automatically operable in response to movement of the door from the closed position to the open position to cause said flexible liner to initially eject the face mask from the storage container through the access opening to a position beyond the door, the face mask subsequently dropping under the influence of gravity to a position of use.
Claim 15
Dependent Claim 60 words
An emergency breathing assembly as set forth in claim 11, wherein the liner supports the face mask thereon when the face mask is stowed in the storage container and the door is in its closed position, the liner being drawn sufficiently tight to eject the face mask from the storage container upon movement of the door to the open position.

References Cited (Backward Citations)

US2306382A Cited
US2507450A Cited
US2809633A Cited
US2931355A Cited
US2934293A Cited
US3073301A Cited
US3536070A Cited
US3503394A Cited
US4154237A Cited
US4481945A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1993-03-19 1993-09-18 1994-03-20 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1997-03-19 1997-09-18 1998-03-20 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2001-03-19 2001-09-18 2002-03-20 $7700.00 Window Closed / Lapsed

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