# US 11,077,946 B2 · Aircraft interior lavatory > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,077,946 B2 - Document ID: US11077946B2 - Status: Granted - Kind: B2 - Application number: 16/819,878 - Filed: 2020-03-16 - Published: 2020-12-17 - Granted: 2021-08-03 - Earliest claimed: 2010-04-20 - Assignees: B/E Aerospace, Inc. - Applicants: B/E Aerospace, Inc. - Inventors: Donald F. Cook; Liberty Harrington; Philipp Steiner; Robert K. Brauer; Trevor Skelly - Web page: https://patentgrep.com/patent/US11077946B2 ## CPC - B64D 11/02: Toilet fittings - B64C 1/10: Bulkheads - B64D 11/06: {Arrangements of seats, or adaptations or details specially adapted for aircraft seats (crew seat constructions for emergency purposes B64D25/04)} - B64D 11/064: {Adjustable inclination or position of seats} - B64F 5/00: Designing, manufacturing, assembling, cleaning, maintaining or repairing aircraft, not otherwise provided for; Handling, transporting, testing or inspecting aircraft components, not otherwise provided for - Y02T 50/40: Weight reduction - B64D: EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT - B64C: AEROPLANES; HELICOPTERS - B64F: GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A lavatory for an aircraft cabin includes a wall having a forward wall portion disposed immediately aft of and substantially conforming to an exterior aft surface of an aircraft cabin structure, such as a passenger seat, that is substantially not flat in a vertical plane. The forward wall portion includes a forward projection over an aft portion of the adjacent passenger seat. The forward wall portion can define a secondary space in the interior lavatory space, which can provide an amenity stowage space, and can include design elements providing visual space. ## Claims ### Claim 1 A lavatory unit for a cabin of an aircraft, comprising: an aft wall; and a forward wall comprising: an upper portion; a lower portion; a middle portion below the upper portion defining an upper recess aftward of at least a portion of the lower portion; wherein the upper recess is adapted to receive at least a portion of the exterior aft surface of a seat back of a seat immediately forward of the forward wall; wherein the lower portion of the forward wall is adapted to receive at least a portion of a seat support of the seat aftward of at least a portion of the lower portion for mounting the seat support to the aircraft; and wherein the forward wall is adapted to receive loads. ### Claim 2 (depends on 1) The lavatory unit of claim 1, wherein the forward wall is adapted to receive loads from the seat. ### Claim 3 (depends on 1) The lavatory unit of claim 1, wherein the forward wall is adapted to receive loads from an adjacent structure exterior of the lavatory unit. ### Claim 4 (depends on 1) The lavatory unit of claim 1, wherein the forward surface of the forward wall is shaped to substantially conform to the shape of the upwardly and aftwardly inclined seat back of the seat. ### Claim 5 (depends on 4) The lavatory unit of claim 4, wherein an aft-facing surface of the lower portion is accessible from the interior. ### Claim 6 (depends on 4) The lavatory unit of claim 4, wherein an aft-facing surface of the middle portion is accessible from the interior. ### Claim 7 (depends on 4) The lavatory unit of claim 4, wherein at least an aft-facing surface of the upper portion, an aft-facing surface of the middle portion, and an aft-facing surface of the lower portion of the forward wall are accessible from an interior of the lavatory unit. ### Claim 8 (depends on 1) The lavatory unit of claim 1, wherein the upper recess is adapted to receive at least a portion of the exterior aft surface of the seat back when the seat back is in an upright and not a reclined position. ### Claim 9 (depends on 1) The lavatory unit of claim 1, wherein the aft-facing surface of the upper portion defines an interior secondary space aftward of the aft-facing surface of the upper portion, and wherein the secondary space is accessible from the exterior of the lavatory unit. ### Claim 10 A lavatory unit for a cabin of an aircraft, comprising: an aft wall; and a forward wall comprising: an upper portion; a lower portion; a middle portion below the upper portion defining an upper recess aftward of at least a portion of the lower portion; wherein the upper recess is adapted to receive at least a portion of the exterior aft surface of a seat back of a seat immediately forward of the forward wall; wherein the lower portion of the forward wall is adapted to receive at least a portion of a seat support of the seat aftward of at least a portion of the lower portion for mounting the seat support to the aircraft; and wherein the forward wall is configured to be positioned adjacent a structure within the cabin without a gap and accept loads from the structure. ### Claim 11 (depends on 10) The lavatory unit of claim 10, wherein the structure comprises the seat. ### Claim 12 (depends on 10) The lavatory unit of claim 10, wherein the structure is exterior of the lavatory unit. ### Claim 13 A lavatory for a cabin of an aircraft, the cabin having an aircraft passenger seat positioned forward of and adjacent to the lavatory, the lavatory comprising: an aft wall; and a forward wall, wherein an interior of the lavatory is disposed between the aft wall and the forward wall, the forward wall comprising: an upper portion; a middle portion defining an aft-extending upper recess below the upper portion, the middle portion including a flat portion; a lower portion below the middle portion; wherein the lower portion comprises a downward extending vertical portion, and wherein a seat support of the aircraft passenger seat is secured aft of the downward extending vertical portion, the seat support configured to interface with a floor of the cabin and hold a seat bottom of the aircraft passenger seat in an elevated position. ### Claim 14 (depends on 13) The lavatory of claim 13, wherein the flat portion of the middle portion defines an aft-most portion of the upper recess and the portion of the exterior aft surface of the seat back is an upper seat back such that the aft-most portion of the upper recess is parallel to an aft surface of the upper seat back when the seat back is in the unreclined position. ### Claim 15 (depends on 13) The lavatory of claim 13, wherein the forward wall is configured to accept loads from a structure adjacent the lavatory. ### Claim 16 (depends on 15) The lavatory of claim 15, wherein the lavatory is configured to be positioned adjacent a portion of the structure with no gap. ### Claim 17 (depends on 15) The lavatory of claim 15, wherein the structure comprises the aircraft passenger seat.