Patent ID: 11903543
Assignee: LG ELECTRONICS INC.
Field: Furniture, games (Other fields)
Classification: CPC A | IPC A

Claim 0:
1. A dishwasher comprising:
a tub with a space configured to accommodate objects to be washed;
a spray arm including a pair of first and second arms spinnably provided in the tub to spray wash water and a pair of first and second auxiliary arms configured to extend spaced apart from the first and second arms by a predetermined angle between the first and second arms and to spray wash water while rotating back and forth about a rotation axis in an extension direction; and
a power transfer assembly configured to convert a rotary force of the first and second arms into a rotary reciprocating movement to reciprocally rotate the first and second auxiliary arms alternately,
wherein the spray arm rotates in one direction by a repulsive force generated as wash water is sprayed by the first and second arms and a repulsive force generated as wash water is sprayed by the first and second auxiliary arms.