# US 8,783,290 B2 · Fine ceramic switch valve for bathtub

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- Number: US 8,783,290 B2
- Document ID: US8783290B2
- Status: Granted
- Kind: B2
- Application number: 13/368,080
- Filed: 2012-02-07
- Published: 2013-08-08
- Granted: 2014-07-22
- Earliest claimed: 2012-02-07
- Assignees: Geann Industrial Co.,Ltd.
- Applicants: Hsiang-Shih Wang
- Inventors: Hsiang-Shih Wang
- Web page: https://patentgrep.com/patent/US8783290B2

## CPC

- F16K 11/074: with flat sealing faces
- F16K 19/006: {Specially adapted for faucets}
- Y10T 137/86493: Multi-way valve unit
- Y10T 137/86863: Rotary valve unit
- F16K: VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING {(devices for emptying and evacuating the excess liquid in valves or conduits F16L55/07)}
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A fine ceramic switch valve for a bathtub includes a water control valve, a valve piece, a switch valve piece, a control shaft, a valve cover, and a valve shell. The water control valve has a first water outlet hole and a second water outlet hole for the bathtub and shower head. The first water outlet hole is smaller to form a smaller water channel, so the water pressure is higher to generate a stronger water flow and effectively reduce water output. The second water outlet hole is larger to form a larger water channel, so when the water passes through the second water outlet hole, as well as a fully open through hole of the bottom of the water control valve, the amount of water can be significantly increased to fill the bathtub and thus to increase the convenience and practicability of the switch valve structure.

## Claims

### Claim 1

A fine ceramic switch valve for a bathtub, comprising:
a water control valve, having a first water outlet hole with smaller size and a second water outlet hole with larger size, and a water outlet trough that connects to the first water outlet hole recessedly formed on sideway of the water control valve, wherein the second water outlet hole passes through the water control valve and forms a semi-circular water channel and a fully open circular through hole at the bottom of the water control valve, and two protruding portions extend on an upper surface of the water control valve;
a valve piece, disposed onto to a surface of the water control valve, and having a first water hole and a second water hole corresponding to the first water outlet hole and second water outlet hole, wherein two positioning protruding portions are protrudingly formed at an outer edge of the valve piece;
a switch valve piece, disposed above the valve piece, and having a semi-circular through flow hole corresponding to the second water outlet hole, and an engaging slot recessedly formed at an outer edge of the switch valve piece;
a control shaft, having a driving portion extending from a bottom portion of the control shaft, and driven and engaged with the engaging slot of the switch valve piece, wherein a positioning ring slot is recessedly formed at an upper position of the driving portion of the control shaft;
a valve cover, covering an upper portion of the water control valve, and a plurality of water inlet troughs formed at an outer edge of the valve cover, wherein two sets of recessed slots and positioning slots are recessedly formed inside the valve cover, which form a secured positioning with the protruding portions of the water control valve and the positioning protruding portions of the valve piece, respectively, wherein a through opening is formed on top of the valve cover for the control shaft to pass through, and the through opening provides a C-shaped hook to engage with the positioning ring slot of the control shaft; and
a valve shell, which is hollow with a receiving space to receive the water control valve, wherein two water inlet ends and a first water outlet end are formed at an outer edge thereof, and an opening and a second water outlet end are formed at an upper and lower end of the valve shell respectively.

### Claim 2 (depends on 1)

The fine ceramic switch valve of claim 1, wherein a plurality of water stopping rings are disposed between the positioning ring slot and the driving portion of the control shaft.

### Claim 3 (depends on 1)

The fine ceramic switch valve of claim 1, wherein a gasket is disposed between the upper surface of the water control valve and the valve piece.

### Claim 4 (depends on 1)

The fine ceramic switch valve of claim 1, wherein second gasket is disposed between the driving portion and the switch valve piece, and the second gasket forms a flow opening corresponding to the flow hole.

### Claim 5 (depends on 1)

The fine ceramic switch valve of claim 1, wherein an outer cover tube is formed corresponding to the opening of the valve shell, and a locking cover is provided to pass through the control shaft to securely engage with the outer cover tube.

### Claim 6 (depends on 5)

The fine ceramic switch valve of claim 5, wherein an inner cover tube is formed between the control shaft and the outer cover tube to increase the stability of the engagement of the outer cover tube and the locking cover.

### Claim 7 (depends on 1)

The fine ceramic switch valve of claim 1, wherein a plurality of water blocking rings are disposed between an upper surface of the water control valve and the water outlet trough.