| 摘要 |
<p>1286705 Drinking valve J R OLDE 4 May 1970 [8 May 1969] 21367/70 Heading AIM [Also in Division F2] The actuator 6 is partly surrounded by a cylindrical portion 5 of the valve housing to prevent inadvertent operation. A cut-away end to the portion 5 permits the valve member 10 to be moved relative to an O-ring seat 12 by an animal's mouth pressing the actuator against the portion 5. Water pressure and a spring 11 bias the valve member closed. A restriction 13 and filter 14 are provided in the cylindrical housing portion 4 which is threaded at 2 for connection to a water supply system.</p> |
