| 摘要 |
<p>Small appliances, electrically activated by means of pneumatic remote-control systems (Fig. 1) that pass and work throughout the wiring-cable (Fig. 2); that do not have their electric switches within themselves but located externally and combined within the plug assembly (Fig. 3). Where, even if such appliances are plugged-in the socket, the circuit can reach the inside of them only when required and where this it is done only by pressing their starting-buttons; where also, because of such characteristics, these appliances can not cause accidents to persons or things if accidentally fall down off the operator's hands during the use.</p> |
