US 12,324,523 B2
Lumbar support mechanism and adjustable bed therewith
Wei Wang, Jiangsu (CN); Fahuan Zhang, Jiangsu (CN); Jian Xie, Jiangsu (CN); and Yifan Mao, Jiangsu (CN)
Assigned to NISCO CO., LTD, Jiangsu (CN)
Filed by Nisco Co., Ltd, Jiangsu (CN)
Filed on May 8, 2024, as Appl. No. 18/658,040.
Application 18/658,040 is a continuation of application No. 17/462,191, filed on Aug. 31, 2021, granted, now 11,980,294.
Application 17/462,191 is a continuation in part of application No. 17/318,006, filed on May 12, 2021, granted, now 11,839,307, issued on Dec. 12, 2023.
Application 17/318,006 is a continuation in part of application No. 16/729,700, filed on Dec. 30, 2019, granted, now 11,317,729, issued on May 3, 2022.
Claims priority of provisional application 63/029,800, filed on May 26, 2020.
Claims priority of provisional application 62/789,062, filed on Jan. 7, 2019.
Claims priority of provisional application 62/789,047, filed on Jan. 7, 2019.
Claims priority of provisional application 62/790,583, filed on Jan. 10, 2019.
Prior Publication US 2024/0285087 A1, Aug. 29, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. A47C 20/04 (2006.01); A47C 19/02 (2006.01); A47C 20/12 (2006.01)
CPC A47C 20/041 (2013.01) [A47C 19/025 (2013.01); A47C 20/12 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A lumbar support mechanism usable in an adjustable bed, comprising:
a lumbar support member;
first, second, third and fourth support legs, each support leg having an upper end and a lower end;
a linkage member; and
first and second lumbar support brackets configured to be attached onto the adjustable bed,
wherein the upper ends of the first and second support legs are pivotally connected to the lumbar support member, and the lower ends of the first and second support legs are pivotally connected to the linkage member, respectively; and the upper ends of the third and fourth support legs are pivotally connected to the first and second support legs, respectively, and the lower ends of the third and fourth support legs are pivotally connected to the first and second lumbar support brackets, respectively, such that a distance between the lumbar support member and the linkage member is changeable between a minimal distance and a maximal distance when the linkage member moves between a first position and a second position.