bed mattress has groups of springs of different characteristics arranged in rows and separated by corrugated elastic cross-pieces

摘要

A mattress has a core with a series of springs arranged in rows. The springs have a variety of elasticity characteristics. The zones (2, 3, 4) with springs of different characteristics (5, 6, 7) are separated by elastic profiled cross-pieces (8, 11). The cross-pieces are fabricated of corrugated material.