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US 4,509,219 AGranted
Sleeping mattress
AssigneeJapan Life Co., Ltd.
InventorToshizo Yagi
Life of this patent
Estimating the term…
Abstract
A sleeping mattress comprises in order a first layer made of cushion material formed with wave-like projections, a second layer having semi-circular projections provided with permanent magnets, a third layer stuffed with palm fibers and reinforcing materials, and a fourth layer composed of cushion materials. A magnetic curing effect by the magnets and a spine balancing effect by moderate hardness are obtained during sleeping, and comfortable sleeping may be achieved.
Claims7
A sleeping mattress comprising, in order:
- a first layer made of cushion material, having a plurality of holes therein, formed with an undulated outer surface;
- a second layer having semicircular projections provided with magnets, said semicircular projections being mated with said holes;
- a third layer stuffed with fibers and reinforcing materials;
- and
- a fourth layer comprising cushion material.
2 more elements
Dependencies are inferred from the claim text.