# US 10,119,216 B2 · Laundry treating appliance with tub and basket having matched characteristics

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- Number: US 10,119,216 B2
- Document ID: US10119216B2
- Status: Granted
- Kind: B2
- Application number: 15/005,359
- Filed: 2016-01-25
- Published: 2016-05-19
- Granted: 2018-11-06
- Earliest claimed: 2013-10-17
- Assignees: Whirlpool Corporation
- Applicants: Whirlpool Corporation
- Inventors: Brenner M. Sharp
- Web page: https://patentgrep.com/patent/US10119216B2

## CPC

- D06F 23/04: and rotating or oscillating about a vertical axis
- D06F 13/02: wherein the agitator has an oscillatory rotary motion only
- D06F 37/24: in machines with a receptacle rotating or oscillating about a vertical axis
- D06F 37/36: for rotating the receptacle at more than one speed {(D06F37/304, D06F37/308 take precedence)}
- D06F 39/085: {Arrangements or adaptations of pumps}
- D06F: LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES

## Abstract

A laundry treating appliance may include a tub and a basket located at least partially within the tub and at least partially defining a laundry treating chamber. A drive system may operatively couple the tub to the basket and may be operative to rotate the basket about a rotational axis. The tub and the basket may each have similar deflection.

## Claims

### Claim 1

A laundry treating appliance comprising:
a tub;
a basket located at least partially within the tub and at least partially defining a laundry treating chamber; and
a drive system operatively coupling the tub to the basket and operative to rotate the basket about a rotational axis; and
wherein the tub and the basket undergo about the same degree of deflection relative to each other when the drive system rotates the basket at a spin speed,
further comprising a cabinet and a suspension system resiliently holding the tub and the basket within the cabinet, wherein the suspension system, the tub, the basket, and contents of the basket collectively define a suspended mass,
wherein the tub and the basket undergo about the same degree of deflection relative to each other when the drive system rotates the basket at the spin speed, which corresponds to a first natural resonance frequency of the suspended mass.

### Claim 2 (depends on 1)

The laundry treating appliance according to claim 1 wherein the spin speed is about 5 Hz lower than the first natural resonance frequency of the suspended mass.

### Claim 3 (depends on 1)

The laundry treating appliance according to claim 1 wherein the spin speed is about 1100 rpm.

### Claim 4 (depends on 1)

The laundry treating appliance according to claim 1 wherein the first natural resonance frequency of the suspended mass is a rocking mode natural resonance frequency.

### Claim 5 (depends on 1)

The laundry treating appliance according to claim 1 wherein the spin speed is a rotational speed above where laundry within the basket satellizes against the basket with a centrifugal force at an inner surface of the basket being 1 g or greater.

### Claim 6 (depends on 5)

The laundry treating appliance according to claim 5 wherein the spin speed is about 1100 rpm.

### Claim 7

A laundry treating appliance comprising: a tub having a tub base;
a basket located at least partially within the tub and at least partially defining a laundry treating chamber, the basket having a basket base; and
a drive system operatively coupling the tub to the basket and operative to rotate the basket about a rotational axis; and
wherein the base of the tub and the base of the basket undergo about the same degree of deflection relative to each other when the drive system rotates the basket at a spin speed wherein laundry within the basket satellizes against the basket with a centrifugal force at an inner surface of the basket being 1 g or greater,
wherein the same degree of deflection is accomplished by the tub base and basket base having matched thickness.

### Claim 8 (depends on 7)

The laundry treating appliance of claim 7 wherein the basket base has a central hub with a thickness between about 45 mm and 70 mm.

### Claim 9 (depends on 8)

The laundry treating appliance of claim 8 wherein the basket base is made from metal when the central hub thickness is less than about 55 mm.

### Claim 10 (depends on 8)

The laundry treating appliance of claim 8 wherein the basket base is made from plastic when the central hub thickness is greater than about 55 mm.

### Claim 11 (depends on 8)

The laundry treating appliance of claim 8 wherein the tub base has an outer periphery with a thickness between about 25 mm and 50 mm.

### Claim 12 (depends on 11)

The laundry treating appliance of claim 11 wherein the tub base outer periphery thickness is about 50 mm.