# US 11,305,860 B2 · Aircraft privacy door and door frame assembly > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,305,860 B2 - Document ID: US11305860B2 - Status: Granted - Kind: B2 - Application number: 16/704,821 - Filed: 2019-12-05 - Published: 2020-04-09 - Granted: 2022-04-19 - Earliest claimed: 2018-02-08 - Assignees: The Boeing Company - Applicants: The Boeing Company - Inventors: Sami Movsesian; Jeffrey M. Dunn; Min I. Koo; Steven H. Sauer - Web page: https://patentgrep.com/patent/US11305860B2 ## CPC - B64C 1/1469: {Doors between cockpit and cabin} - B64C 1/1461: {Structures of doors or surrounding frames} - B64D 45/0026: {by creating a secure space between the flight deck and cabin} - B64D 45/0028: {doors or door arrangements specially adapted to restrict unauthorized access} - B64C: AEROPLANES; HELICOPTERS - B64D: EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT ## Abstract A privacy door assembly for installation in an aircraft relative to a flight deck door of the aircraft includes a door frame having a first post and a second post, where the second post comprises a latch recess. The privacy door comprises a latch positioned on an edge of the privacy door and arranged to engage the latch recess when the privacy door is in a closed position within the door frame. An access door is positioned in the privacy door, where the access door is rotatable from a closed position to an open position in a forward direction. A first mechanical door handle system including a mechanical combination lock is positioned on an aft side of the privacy door and coupled to the latch, and a second mechanical door handle system is positioned on a forward side of the privacy door and coupled to the latch. ## Claims ### Claim 1 A privacy door system for an aircraft, the privacy door system comprising: a privacy door assembly including a door frame and a privacy door, disposed within the aircraft in a cabin area aft of a flight deck door, wherein the flight deck door, when in a closed position, separates a flight deck area of the aircraft from the cabin area of the aircraft; the door frame and privacy door being disposed within the cabin area of the aircraft and aft of the flight deck door such that the privacy door, when in a closed position, separates the cabin area into an intermediate cabin area between the privacy door and the flight deck door and a main cabin area aft of the privacy door, wherein the privacy door further comprises a latch positioned on an edge of the privacy door; an access door positioned in the privacy door, wherein the access door is rotatable from a closed position to an open position in a forward direction; the door frame comprising a first post and a second post, wherein the privacy door is rotatably coupled to the first post via a set of hinges such that the privacy door is rotatable into the intermediate cabin area in the open position; a latch recess positioned within the second post, wherein the latch recess is arranged to engage the latch of the privacy door when the privacy door is in the closed position; a first mechanical door handle system positioned on an aft side of the privacy door and coupled to the latch, wherein the first mechanical door handle system includes a mechanical combination lock, and wherein the latch is configured to disengage from the latch recess in response to entering a correct combination into the mechanical combination lock; and a second mechanical door handle system positioned on a forward side of the privacy door and coupled to the latch, wherein the access door has a width and a length configured to project and extend past the second mechanical door handle system when the access door is in the open position to thereby prevent reach of the second mechanical door handle system from the aft side of the privacy door when the access door is in the open position. ### Claim 2 (depends on 1) The privacy door system of claim 1, wherein the first mechanical door handle system further includes a handle, and wherein the latch is configured to disengage from the latch recess in response to entering the correct combination into the mechanical combination lock and turning the handle. ### Claim 3 (depends on 1) The privacy door system of claim 1, wherein the second mechanical door handle system requires two hands to operate. ### Claim 4 (depends on 3) The privacy door system of claim 3, wherein the second mechanical door handle system comprises: a handle; and a button, wherein pressing the button releases a pin that enables the handle to turn to thereby disengage the latch from the latch recess. ### Claim 5 (depends on 1) The privacy door system of claim 1, wherein in the open position, the access door is substantially parallel to a floor surface of the aircraft. ### Claim 6 (depends on 1) The privacy door system of claim 1, wherein the first mechanical door handle system and the second mechanical door handle system are offset with respect to each other such that the second mechanical door handle system is disposed farther away from the edge of the privacy door than the first mechanical door handle system. ### Claim 7 (depends on 1) The privacy door system of claim 1, wherein the privacy door is further rotatable into the main cabin area of the aircraft when the privacy door is in the open position. ### Claim 8 (depends on 1) The privacy door system of claim 1, wherein the set of hinges includes a hinge spring positioned to bias the privacy door from the closed position to the open position when the latch and the latch recess are disengaged. ### Claim 9 (depends on 1) The privacy door system of claim 1, wherein the door frame comprises a connector for coupling the door frame to an adjacent structure of the aircraft, wherein the connector, when coupled to the adjacent structure of the aircraft, provides at least one degree of freedom of movement for the door frame with respect to the adjacent structure. ### Claim 10 (depends on 9) The privacy door system of claim 9, wherein the connector comprises a slip pin positioned at an upper end of the first post and wherein the adjacent structure comprises a ceiling bracket, and wherein the slip pin, when coupled to the ceiling bracket, comprises at least two degrees of freedom of movement for the door frame with respect to the ceiling bracket. ### Claim 11 (depends on 1) The privacy door system of claim 1, wherein the privacy door further comprises a slam latch positioned to engage a slot in the first post of the door frame when the privacy door is in the open position and when the slam latch is in a first position, wherein the slam latch is coupled to a lever positioned on a forward side of the privacy door, and wherein the lever is operable to move the slam latch away from the first post to a second position so as to disengage the slam latch from the slot. ### Claim 12 (depends on 11) The privacy door system of claim 11, wherein the privacy door further comprises a slam latch spring positioned to bias the slam latch toward the first post, wherein the first post comprises a cylindrical striker, and wherein the cylindrical striker comprises the slot. ### Claim 13 (depends on 1) The privacy door system of claim 1, wherein the second mechanical door handle system comprises: a handle; and a plunger extending vertically from the handle and positioned beneath the access door, wherein the plunger contacts the access door and is depressed when the access door is in the open position, and wherein the handle is locked and unable to turn to thereby disengage the latch from the latch recess when the plunger is depressed. ### Claim 14 (depends on 1) The privacy door system of claim 1, further comprising: a second latch recess positioned on a wall within the intermediate cabin area, wherein the second latch recess is arranged to engage the latch of the privacy door when the privacy door is in the open position. ### Claim 15 An aircraft comprising: a flight deck door, wherein the flight deck door, when in a closed position, separates a flight deck area of the aircraft from a cabin area of the aircraft; a privacy door disposed within the cabin area of the aircraft and aft of the flight deck door such that the privacy door, when in a closed position, separates the cabin area into an intermediate cabin area between the privacy door and the flight deck door and a main cabin area aft of the privacy door, wherein the privacy door further comprises a latch positioned on an edge of the privacy door; an access door positioned in the privacy door, wherein the access door is rotatable from a closed position to an open position in a forward direction; a door frame comprising a first post and a second post, wherein the privacy door is rotatably coupled to the first post via a set of hinges such that the privacy door is rotatable into the intermediate cabin area to an open position; a latch recess positioned within the second post, wherein the latch recess is arranged to engage the latch of the privacy door when the privacy door is in the closed position; a first mechanical door handle system positioned on an aft side of the privacy door and coupled to the latch, wherein the first mechanical door handle system includes a mechanical combination lock, and wherein the latch is configured to disengage from the latch recess in response to entering a correct combination into the mechanical combination lock; and a second mechanical door handle system positioned on a forward side of the privacy door and coupled to the latch, wherein the access door has a width and a length configured to project and extend past the second mechanical door handle system when the access door is in the open position to thereby prevent reach of the second mechanical door handle system from the aft side of the privacy door when the access door is in the open position. ### Claim 16 (depends on 15) The aircraft of claim 15, wherein the first mechanical door handle system further includes a handle, and wherein the latch is configured to disengage from the latch recess in response to entering the correct combination into the mechanical combination lock and turning the handle. ### Claim 17 (depends on 15) The aircraft of claim 15, wherein the second mechanical door handle system requires two hands to operate. ### Claim 18 (depends on 17) The aircraft of claim 17, wherein the second mechanical door handle system comprises: a handle; and a button, wherein pressing the button releases a pin that enables the handle to turn to thereby disengage the latch from the latch recess. ### Claim 19 (depends on 15) The aircraft of claim 15, wherein the first mechanical door handle system and the second mechanical door handle system are offset with respect to each other such that the second mechanical door handle system is disposed farther away from the edge of the privacy door than the first mechanical door handle system. ### Claim 20 (depends on 15) The aircraft of claim 15, wherein the privacy door is further rotatable into the main cabin area of the aircraft when the privacy door is in the open position. ### Claim 21 (depends on 15) The aircraft of claim 15, wherein the second mechanical door handle system comprises: a handle; and a plunger extending vertically from the handle and positioned beneath the access door, wherein the plunger contacts the access door and is depressed when the access door is in the open position, and wherein the handle is locked and unable to turn to thereby disengage the latch from the latch recess when the plunger is depressed. ### Claim 22 (depends on 15) The aircraft of claim 15, further comprising: a second latch recess positioned on a wall within the intermediate cabin area, wherein the second latch recess is arranged to engage the latch of the privacy door when the privacy door is in the open position.