| 摘要 |
<p>1,196,256. Teeth cleaning devices. AQUA TEC CORP. 24 Aug., 1967 [8 Sept., 1966], No. 38939/67. Heading A5R. [Also in Division F1] Water is supplied to a nozzle from a reservoir 11 by a reciprocating piston 25 driven by an electric motor 35 through gearing 37, 38 and a pin and slot mechanism 48, 49. The pump has aligned inlet and outlet 30, 31 the inlet being controlled by a valve 32 which may be held open by a spindle 57 the position of which is controllable by rotating a knob 17. Axial movement of the knob 17 actuates a switch 64 controlling the motor 35.</p> |
