Rectangular leak-proof cushion, has thermoplastic material made from artificial/natural rubber, and cross arms made from wood, plastic, steel or aluminum, where material has air chambers filled and drained over safety valves using air pump

摘要

The cushion (1) has a thermoplastic material with air chambers, where the material is made from an artificial or natural rubber or rubber compound, or from a textile, a plastic or a metal deposit, with or without additives. The air chambers are filled and drained over safety valves (5) using an air pump or compressor. Cross arms (2) are incorporated in to the cushion, where the support arms are made as round or rectangular pipe from wood, plastic, steel or aluminum.