US 10,889,214 B2
Pneumatic four way lumbar
Robert J. McMillen, Tecumseh (CA); Wade O'Moore, Belle River (CA); Horia Blendea, LaSalle (CA); Renato Colja, Windsor (CA); and Alan C. Prettyman, Windsor (CA)
Assigned to LEGGETT & PLATT CANADA CO., Halifax (CA)
Filed by Leggett & Platt Canada Co., Halifax (CA)
Filed on Jul. 17, 2019, as Appl. No. 16/514,487.
Application 16/514,487 is a continuation of application No. 15/390,059, filed on Dec. 23, 2016, granted, now 10,358,065.
Prior Publication US 2019/0337431 A1, Nov. 7, 2019
Int. Cl. B60N 2/90 (2018.01); B60N 2/66 (2006.01); A47C 7/46 (2006.01); B60N 2/70 (2006.01)
CPC B60N 2/665 (2015.04) [A47C 7/467 (2013.01); B60N 2/666 (2015.04); B60N 2/7017 (2013.01); B60N 2/914 (2018.02)] 20 Claims
OG exemplary drawing
 
1. A lumbar support system for a seat backrest, the lumbar support system comprising:
a carrier having a first end and a second end opposite the first end, the carrier movable along a guidewire with respect to the seat backrest in a first direction and in a second direction opposite the first direction;
a first bladder coupled to the first end of the carrier; and
a second bladder coupled to the second end of the carrier,
wherein the first bladder is inflatable to move the carrier in the first direction, and
wherein the second bladder is inflatable to move the carrier in the second direction.