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    • 14. 发明授权
    • Variable volume control for toilet flush tanks
    • 厕所冲水箱可变音量控制
    • US4225987A
    • 1980-10-07
    • US72284
    • 1979-09-04
    • Harley R. GoldmanStewart Hall
    • Harley R. GoldmanStewart Hall
    • E03D1/14E03D1/24E03D5/02
    • E03D1/142
    • A water saving apparatus for a tank flush mechanism in which the trapped air in the flush discharge valve is vented to terminate the flush when the water level in the tank drops to a predetermined level. A pair of water level responsive actuators, set to respond at different water levels, cooperate with a normally closed vent valve coupled to the air chamber in the flush discharge valve. As the water level in the tank drops after a flush is initiated, the actuator set at the higher level in the tank will normally respond first to open the vent valve to exhaust the air from the discharge valve and terminate the flush. To provide a large volume flush, the higher level responsive actuator is rendered non-responsive by the user's manipulation of the flush handle, thereby allowing the flushing action to continue until the other actuator responds to the falling water level to open the vent valve.
    • 一种用于罐冲洗机构的节水装置,其中当所述罐中的水位下降到预定水平时,所述冲洗排放阀中的被捕获的空气被排出以终止冲洗。 设置为在不同水位响应的一对水位响应致动器与联接到冲洗排放阀中的空气室的常闭通气阀配合。 当冲水开始后,水箱中的水位下降,设置在油箱较高位置的执行机构通常会首先响应打开排气阀,从排气阀排出空气并终止冲洗。 为了提供大体积冲洗,较高级别的响应致动器通过用户对冲水手柄的操纵而变得不响应,从而允许冲洗动作继续,直到另一个致动器响应于下降的水位来打开排气阀。