US 12,274,366 B2
Air cushion
Shigeo Moridaira, Tokyo (JP)
Assigned to JUTE inc., Tokyo (JP)
Appl. No. 17/920,802
Filed by JUTE inc., Tokyo (JP)
PCT Filed May 16, 2022, PCT No. PCT/JP2022/020360
§ 371(c)(1), (2) Date Oct. 24, 2022,
PCT Pub. No. WO2023/166751, PCT Pub. Date Sep. 7, 2023.
Claims priority of application No. 2022-033630 (JP), filed on Mar. 4, 2022.
Prior Publication US 2023/0284792 A1, Sep. 14, 2023
Int. Cl. A47C 27/08 (2006.01)
CPC A47C 27/081 (2013.01) [A47C 27/087 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An air cushion including an outer welded portion along an outer peripheral portion of a flat bag-shaped object, the cushion comprising:
when viewed from above,
at least a first air chamber as a seating portion;
a second air chamber as a side support portion disposed on a left of the first air chamber; and
a third air chamber as a facing side support portion disposed on a right of the first air chamber,
wherein the first air chamber communicates with the second air chamber and with the third air chamber through respective passage portions such that filling air moves between the first air chamber, the second air chamber, and the third air chamber, and
an inner welded portion is provided that has a U character and that divides the first air chamber, the second air chamber, and the third air chamber from each other,
the outer welded portion of the second air chamber and the outer welded portion of the third air chamber are configured to be pivotally pushed up with respect to end portions of the inner welded portion on the second air chamber side and on the third air chamber side of the inner welded portion when a user is seated in the air cushion, and
the second air chamber and the third air chamber are configured to rise to wrap a lumbar of the user.