| 摘要 |
The mattress (1) is made from layers of airtight material (2), such as plastics-coated fabric, plastics or rubber. An inflator (4) is formed by one compartment (5) of the mattress. It has an outer hole (6) with a valve, closed by a stopper (7), through which air flows into the compartment from the outside. An inner hole (8), with a valve, allows air to penetrate into the mattress. A hole (9) closed by a stopper (10) allows the mattress to be deflated. The mattress can be inflated by an independent inflater which is held in the compartment. |
