# US 7,406,722 B2 · Automatic faucet for lavatory unit of aircraft

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- Number: US 7,406,722 B2
- Document ID: US7406722B2
- Status: Granted
- Kind: B2
- Application number: 11/254,751
- Filed: 2005-10-21
- Published: 2006-07-13
- Granted: 2008-08-05
- Earliest claimed: 2005-01-07
- Assignees: Jamco Corporation
- Inventors: Masahito Fukuizumi; Tatsuya Yamaguchi
- Web page: https://patentgrep.com/patent/US7406722B2

## CPC

- B64D 11/02: Toilet fittings
- A47K 5/1217: {Electrical control means for the dispensing mechanism}
- E03C 1/057: {touchless, i.e. using sensors}
- A47K 2005/1218: {Table mounted; Dispensers integrated with the mixing tap}
- F21V 33/004: {Sanitary equipment, e.g. mirrors, showers, toilet seats or paper dispensers}
- F21Y 2115/10: Light-emitting diodes [LED]
- 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
- A47K: SANITARY EQUIPMENT; ACCESSORIES THEREFOR, e.g. TOILET ACCESSORIES
- E03C: DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER (not connected to either water-supply main or to waste pipe A47K; devices of the kind used in the ground E03B, E03F); SINKS
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

The invention provides an improved automatic faucet for a lavatory unit of an aircraft. A body 110 of an automatic faucet 100 has on its lower left side (seen from the front) a liquid soap dispenser outlet 200, and the dispenser outlet 200 is connected to a liquid soap dispenser tank via a valve not shown. A reflective infrared sensor 210 for the liquid soap dispenser outlet and an LED light 230 for the liquid soap dispenser outlet are provided adjacent to the liquid soap dispenser outlet 200. When a user's hand is placed within the area of infrared waves 220, a predetermined amount of liquid soap is supplied over the user's hand. The LED light 230 is turned on to illuminate the user's hand. A water supply outlet 300 is provided at the lower right side of the body 110, which is connected to a water tank via a valve not shown. A reflective infrared sensor 310 for the water supply outlet and an LED light 330 for the water supply outlet are provided adjacent to the water supply outlet 300. When the user's hand is placed within the area of infrared waves 320, a predetermined amount of water is supplied over the user's hand. The LED light 330 is turned on to illuminate the user's hand.

## Claims

### Claim 1

An automatic faucet for a lavatory unit of an aircraft comprising:
an automatic faucet body having a semi-annular planar shape and attached to a wall surface in front of a wash basin;
a liquid soap dispenser outlet disposed on a bottom left side of the automatic faucet body;
a reflective infrared sensor for the liquid soap dispenser outlet;
an LED light for the liquid soap dispenser outlet;
a water supply outlet disposed on a bottom right side of the automatic faucet body;
a reflective infrared sensor for the water supply outlet;
an LED light for the water supply outlet; and
a water temperature adjustment dial attached to a right end side of the automatic faucet body.

### Claim 2 (depends on 1)

The automatic faucet for a lavatory unit of an aircraft according to claim 1, wherein the water temperature adjustment dial has an illumination means that changes color tone in response to the temperature of the water being supplied.