# US 10,501,187 B2 · Aircraft lavatory

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- Number: US 10,501,187 B2
- Document ID: US10501187B2
- Status: Granted
- Kind: B2
- Application number: 15/559,522
- Filed: 2015-04-06
- Published: 2018-05-03
- Granted: 2019-12-10
- Earliest claimed: 2015-04-06
- Assignees: Jamco Corporation
- Applicants: Jamco Corporation
- Inventors: Kouichi Ooi; Yoshihisa Tsutsui
- Web page: https://patentgrep.com/patent/US10501187B2

## CPC

- B64D 11/02: Toilet fittings
- B64C 2211/00: Modular constructions of airplanes or helicopters
- B64D 2011/0046: {Modular or preassembled units for creating cabin interior structures}
- 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

## Abstract

In providing an aircraft lavatory unit capable of suppressing cost and time for installation in a case where a lavatory unit and an ascending/descending unit are to be installed on the aircraft, the present invention provides an aircraft lavatory unit in which a lavatory area and an ascending/descending area are integrally formed, wherein an ascending/descending mechanism which connects to an upper floor or a ceiling space of the aircraft lavatory unit inside the ascending/descending area is provided on a wall surface dividing the lavatory area and the ascending/descending area.

## Claims

### Claim 1

An aircraft lavatory unit comprising a lavatory area and an ascending or descending area which are formed integrally,
wherein the unit comprises a staircase on an inclined surface, the staircase connecting to an upper floor or a ceiling space of the aircraft lavatory unit inside the ascending or descending area, a wall surface divides the lavatory area and the ascending or descending area and overhangs the lavatory area towards a ceiling,
a part of the inclined surface has a shape matching the overhanging shape of the wall surface, and
a storage space is provided between a rear side of the inclined surface on which the staircase is provided and the wall surface.

### Claim 2 (depends on 1)

The aircraft lavatory unit according to claim 1,
wherein the lavatory area comprises a door provided at a position facing the wall surface, and a toilet unit provided on the wall surface side and facing the door, and
the ascending or descending area has an entrance on an opposite side from the door intervening the wall surface.

### Claim 3 (depends on 1)

The aircraft lavatory unit according to according to claim 1, wherein the storage space has approximately a triangular shape in side view.

### Claim 4 (depends on 2)

The aircraft lavatory unit according to according to claim 2, wherein the storage space has approximately a triangular shape in side view.

### Claim 5 (depends on 1)

The aircraft lavatory unit according to claim 1, wherein the aircraft lavatory unit has a door on a side wall of the storage space, the door being arranged so that the storage space can be accessed from an exterior of the unit.

### Claim 6 (depends on 2)

The aircraft lavatory unit according to claim 2, wherein the aircraft lavatory unit has a door on a side wall of the storage space, the door being arranged so that the storage space can be accessed from an exterior of the unit.

### Claim 7 (depends on 1)

The aircraft lavatory unit according to claim 1, wherein the aircraft lavatory unit has a door to the storage space, the door being arranged in a part of the staircase in the ascending or descending area.

### Claim 8 (depends on 2)

The aircraft lavatory unit according to claim 2, wherein the aircraft lavatory unit has a door to the storage space, the door being arranged in a part of the staircase in the ascending or descending area.