US 12,185,893 B2
Dish washer
Seyoung Woo, Seoul (KR); Joonho Pyo, Seoul (KR); Daegyu Kim, Seoul (KR); and Taehee Lee, Seoul (KR)
Assigned to LG Electronics Inc., Seoul (KR)
Filed by LG Electronics Inc., Seoul (KR)
Filed on Mar. 16, 2023, as Appl. No. 18/185,064.
Application 16/536,423 is a division of application No. 15/654,388, filed on Jul. 19, 2017, granted, now 10,617,278, issued on Apr. 14, 2020.
Application 15/654,388 is a division of application No. 15/015,243, filed on Feb. 4, 2016, granted, now 10,413,151, issued on Sep. 17, 2019.
Application 18/185,064 is a continuation of application No. 17/375,713, filed on Jul. 14, 2021, granted, now 11,622,666.
Application 17/375,713 is a continuation of application No. 16/536,423, filed on Aug. 9, 2019, granted, now 11,096,548, issued on Aug. 24, 2021.
Claims priority of application No. 10-2015-0017247 (KR), filed on Feb. 4, 2015; and application No. 10-2015-0017249 (KR), filed on Feb. 4, 2015.
Prior Publication US 2023/0210339 A1, Jul. 6, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A47L 15/20 (2006.01); A47L 15/22 (2006.01); A47L 15/23 (2006.01); A47L 15/42 (2006.01)
CPC A47L 15/20 (2013.01) [A47L 15/22 (2013.01); A47L 15/23 (2013.01); A47L 15/4214 (2013.01); A47L 15/4282 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A dishwasher comprising:
a sump configured to store water;
a pair of main arms disposed at the sump and configured to extend in opposite directions to supply water from the sump to spray wash water to an object;
a pair of auxiliary arm connection members configured to extend in opposite directions and to be spaced apart from the main arms by a predetermined angle; and
a pair of auxiliary arms rotatably disposed at the auxiliary arm connection members and configured to spray wash water to the object while rotating about a rotation axis that is defined by a direction in which the auxiliary arms extend, forming an auxiliary flow passage in which wash water flows,
wherein the pair of main arms include a transfer flow passage in fluid communication with the auxiliary flow passage,
wherein each of the pair of auxiliary arm connection members comprise:
a flow tube integral with the pair of main arms in fluid communication with the transfer flow passage and the auxiliary flow passage;
a first support rib disposed at a first side of the flow tube and configured to extend in a longitudinal direction of the flow tube;
a second support rib disposed at a second side of the flow tube and parallel to the first support rib;
a third support rib connected to the first support rib and the second support rib; and
a shaft connected to the third support rib and configured to be inserted into the auxiliary flow passage.