# US 9,528,253 B2 · Controller assembly for automatic flush valve

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- Number: US 9,528,253 B2
- Document ID: US9528253B2
- Status: Granted
- Kind: B2
- Application number: 14/456,027
- Filed: 2014-08-11
- Published: 2016-01-21
- Granted: 2016-12-27
- Earliest claimed: 2014-07-17
- Assignees: Flushtech Corporation
- Applicants: Flushtech Corporation
- Inventors: Bin-Han Huang
- Web page: https://patentgrep.com/patent/US9528253B2

## CPC

- E03D 5/105: {touchless, e.g. using sensors}
- E03D 3/02: Self-closing flushing valves (self-closing valves in general F16K21/04)
- E03D 3/06: with diaphragm valve and pressure chamber for retarding the valve-closing movement
- E03D: WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR

## Abstract

A controller assembly for an automatic flush valve provides economical approach to transforming a manual flush valve into an automatic flush valve. The controller assembly includes a base for holding a battery set and a sensor into a combination, and a cap covering the combination. A solenoid valve and a membrane below the combination are receiving in a socket of a foundation. A ring is rotatably mounted around a bottom of the foundation. A sleeve passing the cap is mounted around the foundation and stands on the ring. The ring allows the controller assembly to be easily assembled with a valve body of any type into an automatic flush valve or to be easily removed from the automatic flush valve and replaced by a manual controller assembly so as to form a manual flush valve. Thereby, the transformation can be economical accomplished without replacing the existing valve body.

## Claims

### Claim 1

A controller assembly for an automatic flush valve, the controller assembly comprising a battery set, a sensor, a base that holds the battery set and the sensor together into a combination, a cap covering the combination from outside, and a solenoid valve as well as a membrane provided below the combination, and the controller assembly being characterized in:
a foundation, being an integral part including an upper flange, a lower flange, and a grating segment between the two flanges, the foundation having an upward-open socket and a downward projecting pipe, wherein the socket has a bottom communicated with an upper end of the pipe, and the solenoid valve and the membrane are placed in the socket of the foundation successively from top;
a ring, being rotatably mounted around the lower flange of the foundation; and
a sleeve, passing the cap to be mounted around the foundation and deposited on the ring, and being affixed to the foundation by means of at least one bolt.

### Claim 2 (depends on 1)

The controller assembly of claim 1, wherein the pipe of the foundation has a lower end thereof screwed to a guiding tube that is configured to be inserted into a water inlet of a valve body.

### Claim 3 (depends on 2)

The controller assembly of claim 2, further comprising at least one O-ring seal that is provided between the guiding tube and the water inlet of the valve body.

### Claim 4 (depends on 2)

The controller assembly of claim 2, further comprising a washer that is mounted around the pipe and located between a bottom of the foundation and a top of the valve body.

### Claim 5 (depends on 1)

The controller assembly of claim 1, wherein the solenoid valve is affixed to a top of the foundation by means of a plurality of bolts.

### Claim 6 (depends on 1)

The controller assembly of claim 1, wherein the ring has inner threads for combining with a valve body.

### Claim 7 (depends on 1)

The controller assembly of claim 1, further comprising a push button that is provided in a receiving hole provided on the foundation and acts as a switch for manually controlling water discharging of the flush valve.

### Claim 8 (depends on 7)

The controller assembly of claim 7, further comprising a patch such covering one side of the sleeve that the push button is exposed outside the patch.

### Claim 9 (depends on 8)

The controller assembly of claim 8, wherein the patch is fixed to the foundation by means of a bolt.

### Claim 10 (depends on 1)

The controller assembly of claim 1, further comprising a washer provided between the base that holds the sensor and the battery set and a top of the foundation.