# US 2014/0154966 A1 · Hand dryer

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- Number: US 2014/0154966 A1
- Document ID: US20140154966A1
- Status: Published application
- Kind: A1
- Application number: 14/095,591
- Filed: 2013-12-03
- Published: 2014-06-05
- Earliest claimed: 2012-12-03
- Assignees: Dyson Technology Limited
- Applicants: Dyson Technology Limited
- Inventors: Michael Sean JOYNT; Remco Douwinus VUIJK
- Web page: https://patentgrep.com/patent/US20140154966A1

## CPC

- F26B 21/001: {Air generating units, e.g. movable or independent of drying enclosure}
- E03C 1/0404: {Constructional or functional features of the spout}
- F04D 29/663: {Sound attenuation}
- F16F 15/067: using only wound springs
- A47K 10/48: Drying by means of hot air
- A47K 2210/00: Combinations of water taps, soap dispensers and hand dryers
- F26B: DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM (drying devices for combines A01D41/133; racks for drying fruit or vegetables A01F25/12; drying foodstuffs A23; drying hair A45D20/00; body-drying implements A47K10/00; drying household articles A47L; drying gases or vapours B01D; chemical or physical processes for dewatering or like separating liquids from solids B01D43/00; centrifugal apparatus B04; drying ceramics C04B33/30; drying yarns or fabrics in association with some other form of treatment D06C; drying frames for laundry without heating or positive air circulation, domestic laundry-or spin-driers, wringing or hot pressing laundry D06F; furnaces, kilns, ovens F27)
- 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
- F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02)
- F16F: SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- A47K: SANITARY EQUIPMENT; ACCESSORIES THEREFOR, e.g. TOILET ACCESSORIES

## Abstract

A hand dryer for drying a user's hands by means of airflow discharged through an air outlet on the hand dryer. The airflow is generated by a motor-driven fan unit which is spring-mounted on a fixed part of the hand dryer via a plurality of coil springs.

## Claims

### Claim 1

A hand dryer for drying a user's hands by an airflow discharged through an air outlet on the hand dryer, the airflow being generated by a motor-driven fan unit, the fan unit being spring-mounted on a fixed part of the hand dryer via a plurality of coil springs.

### Claim 2 (depends on 1)

The hand dryer of claim 1, wherein the fan unit comprises a fan for generating the airflow, the plurality of springs comprises two sets of springs, and the two sets of springs are spaced axially along the axis of rotation of the fan.

### Claim 3 (depends on 2)

The hand dryer of claim 2, wherein springs extend at an angle to the axis of rotation of the fan.

### Claim 4 (depends on 3)

The hand dryer of claim 3, wherein the springs in a first set each extend at a first angle to form a respective frusto-conical spring configuration, and at least some of the springs in the second set also extend at the same, first angle to form a respective frusto-conical spring configuration.

### Claim 5 (depends on 4)

The hand dryer of claim 4, wherein a first group of the springs in the second set extend at the first angle to form a first frusto-conical spring configuration and a second group of the springs in the second set extend at a second angle to form a second frusto-conical spring configuration.

### Claim 6 (depends on 5)

The hand dryer of claim 5, wherein the springs in the first group each has a first spring constant and the springs in the second group each has a second spring constant, different from the first spring constant.

### Claim 7 (depends on 6)

The hand dryer of claim 6, wherein the first group of springs are located on one side of the fan unit, and the second group of springs are located on an opposite side of the fan unit.

### Claim 8 (depends on 7)

The hand dryer of claim 7, further comprising a discharge nozzle on one side of the fan unit for discharging the airflow outwardly away from the fan axis, the discharge nozzle being located on the same side of the fan unit as the second group of springs.

### Claim 9 (depends on 8)

The hand dryer of claim 8, wherein the discharge nozzle is located axially nearer the second set of springs.

### Claim 10 (depends on 1)

The hand dryer of claim 1, in which the springs are extension springs.

### Claim 11 (depends on 10)

The hand dryer of claim 10, in which each spring is pivotally mounted at one end to the fan unit and pivotally mounted at its other end to the fixed part of the hand dryer.