Self cleaning metering device for diaphragm style flush valve

Details Self cleaning metering device for diaphragm style flush valve Self cleaning metering device for diaphragm style flush valve

2007-02-27

2007-02-27

Lee, Kevin (Department: 3753)

Fluid handling

With cleaner, lubrication added to fluid or liquid sealing...

Cleaning or steam sterilizing

C137S245500

Reexamination Certificate

active

11043368

ABSTRACT:
The self cleaning metering device for a diaphragm of a diaphragm type flush valve comprises a metering cap having a metering orifice therein, a hollow retainer threadedly engaged to the metering cap, the diaphragm being sandwiched therebetween, and a cleaning element comprising a spring coil movably seated within the device, the coil having a first pin centered relative to the metering orifice and extending therethrough and a second pin extending opposite the first pin into and through the hollow retainer, wherein water flowing through the metering device acts to move the coil, and pins thereof, the coil and pins acting to clean debris from the interior of the device upon moving therewithin.

REFERENCES:
patent: 1937555 (1933-12-01), Estler
patent: 4787411 (1988-11-01), Moldenhauer
patent: 5167251 (1992-12-01), Kirstein
patent: 5213124 (1993-05-01), Costa
patent: 5964408 (1999-10-01), Musson

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