US 12,256,845 B2
Adjustable firmness mattress system
Philip J Haarstad, Chanhassen, MN (US); Molly Haarstad, Natchitoches, LA (US); Alexander Haarstad, Natchitoches, LA (US); Benjamin Haarstad, Chaska, MN (US); Connie Marie Haarstad, Eden Prairie, MN (US); Donald Melvin Haarstad, Champlin, MN (US); Laura K Y Haarstad, Chanhassen, MN (US); Lucas G Haarstad, Chanhassen, MN (US); Paul A Haarstad, Eden Prairie, MN (US); Dennis Nathaniel Harvey, Norwood Young America, MN (US); Anthony Todd Hessburg, Minnetrista, MN (US); Ching Hung, Maple Grove, MN (US); Heidi J Hung, Maple Grove, MN (US); Shawn M Patterson, East Aurora, NY (US); Elizabeth Kate Radzwill, White Bear Lake, MN (US); and Rockford Kenneth White, Woodbury, MN (US)
Filed by Haarstad Innovative Systems LLC, Chanhassen, MN (US)
Filed on Jan. 29, 2022, as Appl. No. 17/588,251.
Claims priority of provisional application 63/143,937, filed on Jan. 31, 2021.
Prior Publication US 2022/0240687 A1, Aug. 4, 2022
Int. Cl. A47C 27/14 (2006.01); A47C 27/15 (2006.01); A47C 31/12 (2006.01)
CPC A47C 27/148 (2013.01) [A47C 27/146 (2013.01); A47C 27/15 (2013.01); A47C 31/123 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A rectangular shaped adjustable firmness mattress that extends lengthwise from a head end to a foot end, widthwise from a first side to a second side, and depth-wise from a top side to a bottom side, the mattress comprising:
an adjustable firmness support layer disposed between the bottom side of the mattress and the top side of the mattress, the adjustable firmness support layer including:
a plurality of rotatable assemblies, wherein the plurality of rotatable assemblies includes a first rotatable assembly and a second rotatable assembly, the first rotatable assembly including a first plurality of compressible elements that are mounted on a first central axle and the second rotatable assembly including a second plurality of compressible elements that are mounted on a second central axle, the first plurality of compressible elements interleaved with the second plurality of elements
a bridge assembly disposed between the at least one rotatable assembly and the top side of the mattress; and
a support assembly disposed between the at least one rotatable assembly and the bottom side of the mattress.