MATTRESS CELL VALVES

摘要

A mattress has a cover (1) with a top sheet (2), a bottom sheet and a peripheral web (3) between the two sheets. The web is largely covered I connected at the top sheet / peripheral web seam (5). The band covers a sliding clasp fastener (6) in the web (3), which is openable for access to the mattress cells inside. The band also covers a flap (7) with its own sliding clasp fastener (8) for an opening giving access to controls (9) for head end cells (10). There are four transverse, head cells (101,102,103,104), whose state of inflation is controlled by controls (91,92,93,94) for valves (111,112,113,114). Each valve has four ports, one for connection to constant pressure air, another to cycling pressure air, a third to exhaust/ambient and a fourth to its cell.