# US 2014/0190219 A1 · Washing machine to produce three-dimensional motion

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2014/0190219 A1
- Document ID: US20140190219A1
- Status: Published application
- Kind: A1
- Application number: 14/208,183
- Filed: 2014-03-13
- Published: 2014-07-10
- Earliest claimed: 2011-10-24
- Assignees: LG Electronics Inc.
- Applicants: LG Electronics Inc.
- Inventors: Jinwoong KIM; Changwoo SON; Chaseung JUN; Dongwon KIM; Hwanjin JUNG; Byungwook MIN; Byungkeol CHOI
- Web page: https://patentgrep.com/patent/US20140190219A1

## CPC

- D06F 37/304: {Arrangements or adaptations of electric motors}
- B23P 11/00: Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for (connecting sheet metal or metal tubes, rods or profiles B21D39/00; riveting B21J; soldering, unsoldering, welding B23K; hand tools for connecting wire or strip B25B25/00; connecting metal parts by adhesives F16B11/00)
- B23P 11/02: by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits
- D06F 31/00: Washing installations comprising an assembly of several washing machines or washing units, e.g. continuous flow assemblies
- D06F 37/04: adapted for rotation or oscillation about a horizontal or inclined axis
- D06F 37/06: Ribs, lifters, or rubbing means forming part of the receptacle
- D06F 37/206: {Mounting of motor}
- D06F 37/269: {for the bearing of the rotary receptacle}
- H02K 1/148: {Sectional cores (H02K1/141 takes precedence)}
- H02K 1/16: Stator cores with slots for windings
- H02K 1/26: Rotor cores with slots for windings
- H02K 1/265: {Shape, form or location of the slots}
- H02K 1/2706: Inner rotors
- H02K 1/2773: {consisting of tangentially magnetized radial magnets}
- H02K 1/28: Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
- H02K 3/522: {for generally annular cores with salient poles}
- H02K 7/003: {Couplings; Details of shafts (means for mounting rotors on shafts H02K1/28)}
- H02K 7/14: Structural association with mechanical loads, e.g. with hand-held machine tools or fans (with fan or impeller for cooling the machine H02K9/06)
- H02K 11/215: Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
- H02K 15/022: with salient poles
- H02K 16/00: Machines with more than one rotor or stator {(machines for transmitting mechanical power from a driving shaft to a driven shaft and comprising structurally interrelated motor and generator parts H02K51/00; permanent magnet machines with multiple rotors or stators relatively rotated for vectorially combining the excitation fields or the armature voltages H02K21/029)}
- H02K 16/02: Machines with one stator and two {or more} rotors
- H02K 21/12: with stationary armatures and rotating magnets
- H02K 29/08: using magnetic effect devices, e.g. Hall-plates, magneto-resistors (H02K29/12 takes precedence)
- D06F 21/02: about a horizontal axis
- D06F 23/02: and rotating or oscillating about a horizontal axis
- D06F 37/30: Driving arrangements (control circuits or arrangements D06F34/08)
- D06F 2103/04: Quantity, e.g. weight or variation of weight
- D06F 2105/48: Drum speed
- H02K 21/16: having annular armature cores with salient poles (with homopolar co-operation H02K21/20)
- H02K 21/22: with magnets rotating around the armatures, e.g. flywheel magnetos
- Y02B 40/00: Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
- Y10T 29/49826: Assembling or joining
- Y10T 29/49945: by driven force fit
- D06F: LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- B23P: METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS (arrangements for copying or controlling B23Q)
- H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53})
- Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A washing machine includes a main body defining an outer appearance, a tub disposed within the main body, a main drum rotatably mounted in the tub, a sub drum mounted in the main drum to be relatively rotatable with respect to the main drum, an outer shaft for rotating the main drum, an inner shaft for rotating the sub drum, being disposed inside the outer shaft, and a driving motor having a stator, an outer rotor connected to the inner shaft that is rotatable outside the stator, and an inner rotor connected to the outer shaft that is rotatable inside the stator, wherein the driving motor independently drives the main drum and the sub drum.

## Claims

### Claim 1

A washing machine including:
a main body defining an outer appearance;
a tub disposed within the main body;
a main drum rotatably mounted in the tub;
a sub drum mounted in the main drum to be relatively rotatable with respect to the main drum;
an outer shaft for rotating the main drum;
an inner shaft for rotating the sub drum, being disposed inside the outer shaft; and
a driving motor having a stator, an outer rotor connected to the inner shaft that is rotatable outside the stator, and an inner rotor connected to the outer shaft that is rotatable inside the stator, wherein the driving motor independently drives the main drum and the sub drum.