REINFORCED POCKET SPRING MATTRESS

Abstract: a pocket spring mattress may include a plurality of double layer spring units, each including an upper pocket spring unit arranged axially onto a lower pocket spring unit. the upper pocket spring unit may have an upper fabric pocket, and the lower pocket spring unit may have a lower fabric pocket. the upper fabric pocket and the lower fabric pocket may be formed from a same continuous fabric material. an upper spring may be enclosed in the upper fabric pocket and a lower spring may be enclosed in the lower fabric pocket. the upper fabric pocket and the lower fabric pocket may be welded therebetween, such that a welded seam extends between the upper and the lower springs. the springs may be reference springs having a first spring constant and frame springs having a second spring constant greater than the first spring constant.

Inventor(s): Joacim NYGREN

CPC Classification: A47C27/064 (CHAIRS (seats specially adapted for vehicles ); SOFAS; BEDS (upholstery in general ))

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