专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US3989066A Fluid control system 失效
公开(公告)号：US3989066A
公开(公告)日：1976-11-02
申请号：US471671
申请日：1974-05-20
申请人： Oded E. Sturman , Benjamin Grill , Yigal Froman
发明人： Oded E. Sturman , Benjamin Grill , Yigal Froman
IPC分类号： A01G25/16 , F16K31/40
CPC分类号： A01G25/162 , F16K31/402 , Y10T137/86461
摘要： A battery operated fluid control system, which may be used in a sprinkler stem having a master valve unit with a battery operated electronic clock therein for periodically opening the valve for a preset duration in response to the clock turn-on pulse, and being operable with one or more slave valve units connected in series to sequentially open the slave valves for their corresponding preset time duration. The clock is comprised of an oscillator having a plurality of countdown flip-flops, with the clock turn-on pulse being selectable from the outputs of a group of the lower flip-flops to give a selection of valve turn-on intervals. A battery operated solenoid valve of the latching type and associated circuitry is located in the master valve unit and each of the slave valve units, with the circuitry being adapted to receive a pulse, either from the clock or from the turn-off signal of the previous valve unit, and to provide a turn-on pulse to the solenoid. The circuitry is also comprised of an adjustable time delay circuit to measure the desired duration from the turn-on pulse and to provide a subsequent turn-off pulse to the solenoid. One embodiment is adapted to replace the valve mechanism in a prior art anti-syphon valve assembly. Another embodiment incorporates a unique anti-syphon valve which does not obstruct the primary flow path and further has a moisture collecting container on the side thereof, cooperatively disposed with the anti-syphon valve and having electrical probes therein connected to the circuitry. When the valve turns on, the initial leakage of the anti-syphon valve fills the container, which will remain filled in rainy or very himid weather, thereby preventing subsequent opening of the valve until the moisture has evaporated. The valve and time delay circuit is also adaptable for use in manually initiated systems, such as toilets and the like, and a unique toilet bowl and water valve component arrangement is disclosed to achieve the anti-syphon function.

IPRDB

热门服务

关于我们

友情链接

联系方式