US 12,239,235 B2
Mattress, sheet, bed system, and air cell
Kenta Ohno, Tokyo (JP); Makoto Tanaka, Tokyo (JP); and Takayuki Arimatsu, Tokyo (JP)
Assigned to PARAMOUNT BED CO., LTD., Tokyo (JP)
Filed by PARAMOUNT BED CO., LTD., Tokyo (JP)
Filed on Jun. 29, 2023, as Appl. No. 18/215,846.
Application 18/215,846 is a continuation of application No. 17/330,691, filed on May 26, 2021, granted, now 11,730,278.
Claims priority of application No. 2020-100195 (JP), filed on Jun. 9, 2020.
Prior Publication US 2023/0337836 A1, Oct. 26, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A47C 27/10 (2006.01); A47C 27/08 (2006.01); A47C 31/00 (2006.01)
CPC A47C 27/10 (2013.01) [A47C 27/083 (2013.01); A47C 31/008 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A mattress, comprising:
first air cells extending in a short side direction of the mattress;
second air cells that are located on both sides of a user and located under the first air cells; and
a pump connected to the second air cells via an air feed tube to feed the air to the second air cells;
wherein
the second air cells each have a convex shape on a first side and a concave shape on a second side, at least one of the second air cells extending in a first direction, the first direction being oblique to a longitudinal direction of the mattress, and
the second air cells are arranged so that at least one convex shape thereof is respectively located near and facing a shoulder blade outer edge of the user, and at least one concave shape thereof is respectively located near and facing a buttocks of the user.