| 摘要 |
A dust container for a vacuum cleaner having contacts electrically connected to an electric circuit that permits the vacuum cleaner to be activated only when an electrical connection is established between the contacts. The dust container includes a bag of air pervious material having an opening formed therein. A plate covers the opening in the bag. The plate is formed from at least two layers of cardboard and has an opening extending therethrough. An electrical conductor is disposed between the layers of cardboard. When the dust container is properly mounted in the vacuum cleaner, the electrical conductor establishes and electrical connection between the contacts, thereby permitting the vacuum cleaner to be activated.
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