# US 2019/0168039 A1 · Air-pressure controlled piston and valve configuration

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- Number: US 2019/0168039 A1
- Document ID: US20190168039A1
- Status: Published application
- Kind: A1
- Application number: 16/266,746
- Filed: 2019-02-04
- Published: 2019-06-06
- Earliest claimed: 2015-07-09
- Inventors: Carroll G. Rowe
- Web page: https://patentgrep.com/patent/US20190168039A1

## CPC

- A62C 5/02: of foam
- F16K 1/523: {for limiting the maximum flow rate, using a stop}
- F16K 17/168: combined with manually-controlled valves, e.g. a valve combined with a safety valve
- F16K 17/22: actuated by the difference of pressure between two places in the flow line
- F16K 31/122: the fluid acting on a piston (F16K31/143, F16K31/163, F16K31/363, F16K31/383 take precedence)
- G05D 16/103: {the sensing element placed between the inlet and outlet (multiple-way valve G05D16/101)}
- G05D 16/107: {with a spring-loaded piston in combination with a spring-loaded slideable obturator that move together over range of motion during normal operation}
- G05D 16/166: {using pistons within the main valve}
- G05D 16/187: {using pistons within the main valve}
- F17C 2205/0338: Pressure regulators
- A62C: FIRE-FIGHTING (fire-extinguishing compositions, use of chemical substances in extinguishing fires A62D1/00; spraying, applying liquids or other fluent materials to surfaces in general B05; alarm arrangements G08B, e.g. fire alarms actuated by smoke or gases G08B17/10)
- 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)}
- G05D: SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- F17C: VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES (storing fluids in natural or artificial cavities or chambers in the earth B65G5/00; construction or assembling of bulk storage containers employing civil-engineering techniques E04H7/00; variable-capacity gas-holders F17B; liquefaction or refrigeration machines, plants, or systems F25)

## Abstract

A pressurized-fluid controlled pressure regulator includes a piston configured to slide within the pressure regulator, a plate of the piston positioned in and separating a pressure chamber into two sections and a shaft of the piston extending from the plate out of the pressure chamber and into a liquid flow chamber, wherein the introduction of liquid into the liquid flow chamber exerts a force on the piston shaft, moving the piston to an open position, and wherein the introduction of various amounts of pressurized fluid into the different sections of the pressure chamber allows for selective movement of the piston between a closed position and open position.

## Claims

### Claim 1

A pressure regulator for regulating the flow of a liquid from a pressurized liquid source, the pressure regulator comprising:
a. an inlet area;
b. an outlet area
c. a liquid flow chamber fluidically connecting the inlet area and the outlet area, wherein the liquid flow chamber comprises a sealing port, and wherein the liquid flow chamber is configured to receive an amount of the liquid from the inlet area;
d. a pressure chamber;
e. a dividing panel positioned between the liquid flow chamber and the pressure chamber, wherein the dividing panel comprises an aperture;
f. a piston comprising:
i. a plate, wherein the plate is positioned on a first side of the dividing panel and inside of the pressure chamber, wherein the plate divides the pressure chamber into a first pressure chamber section and a second pressure chamber section, wherein a first surface of the plate is positioned inside the first pressure chamber and a second surface of the plate is positioned inside the second pressure chamber;
ii. a shaft, wherein the shaft extends through the aperture of the dividing panel and into the liquid flow chamber;
g. a first fluid supply port fluidically connected to the first pressure chamber; and
h. a second fluid supply port fluidically connected to the second pressure chamber.

### Claim 2 (depends on 1)

The pressure regulator of claim 1, wherein the first fluid supply port is configured to selectively introduce an amount of pressurized fluid from a pressurized fluid supply source into the first pressure chamber and the second fluid supply port is configured to selectively introduce an amount of the pressurized fluid into the second pressure chamber.

### Claim 3 (depends on 2)

The pressure regulator of claim 2, wherein the receipt of the liquid into the liquid flow chamber exerts a force on the shaft of the piston, further wherein the introduction of the pressurized fluid into the first pressure chamber exerts a force on the first surface of the plate, and further wherein the introduction of the pressurized fluid into the second pressure chamber exerts a force on the second surface of the plate.

### Claim 4 (depends on 3)

The pressure regulator of claim 3, wherein if the force exerted on the first surface of the plate is less than the sum of the force exerted on the second surface of the plate and the force exerted on the shaft of the piston, the piston is configured to move in a first direction within the pressure regulator.

### Claim 5 (depends on 3)

The pressure regulator of claim 3, wherein if the force exerted on the first surface of the plate is greater than the sum of the force exerted on the second surface of the plate and the force exerted on the shaft of the piston, the piston is configured to move in a second direction within the pressure regulator.

### Claim 6 (depends on 5)

The pressure regulator of claim 5, further comprising a first fluid supply line fluidically connected to the first fluid supply port and a second fluid supply line fluidically connected to the second fluid supply port, wherein each of the first fluid supply line and second fluid supply line are fluidically connected to the pressurized fluid supply source.

### Claim 7 (depends on 6)

The pressure regulator of claim 6, wherein each of the first and second fluid supply lines comprises a valve.

### Claim 8 (depends on 7)

The pressure regulator of claim 7, wherein the valve of each of the first and second fluid supply line comprises a vent.

### Claim 9 (depends on 8)

The pressure regulator of claim 8, wherein the amount of pressurized fluid introduced to the first pressure chamber through the first supply port is selectively controllable by the valve on the first supply line and wherein the amount of pressurized fluid introduced to the second pressure chamber though the second supply port is selectively controllable by the valve on the second supply line.

### Claim 10 (depends on 9)

The pressure regulator of claim 9, further comprising a controller configured to selectively control the valve on the first supply line and the valve on the second supply line, thereby selectively controlling the amount of pressurized fluid introduced into the pressure chamber.

### Claim 11 (depends on 10)

The pressure regulator of claim 10, further comprising a microprocessor coupled to the controller and configured to send signals to the controller for selectively controlling the valve on the first supply line and on the second supply line.

### Claim 12 (depends on 10)

The pressure regulator of claim 10, further comprising a transducer positioned on the first supply line, wherein the transducer is configured to record a pressure in the first pressure chamber and transmit a signal to the controller based on the recorded pressure in the first pressure chamber.

### Claim 13 (depends on 11)

The pressure regulator of claim 11, wherein the controller is configured to selectively control the first valve based on the recorded pressure in the first pressure chamber.

### Claim 14 (depends on 10)

The pressure regulator of claim 10, further comprising a transducer positioned in the outlet area, wherein the transducer is configured to record a pressure at the outlet area and transmit a signal to the controller based on the recorded pressure at the outlet area.

### Claim 15 (depends on 14)

The pressure regulator of claim 14, wherein the controller selectively controls at least one of the valve on the first supply line and the valve on the second supply line based on the recorded pressure at the outlet area.

### Claim 16

A pressure regulator for regulating the flow of a liquid from a pressurized liquid source by selectively introducing a pressurized fluid from a pressurized fluid source into the pressure regulator to selectively move the pressure regulator between a closed position to an open position, the pressure regulator comprising:
a. an inlet area;
b. an outlet area;
c. a liquid flow chamber fluidically connecting the inlet area and the outlet area, wherein the liquid flow chamber comprises a sealing port;
d. a pressure chamber;
e. a dividing panel positioned between the liquid flow chamber and the pressure chamber, wherein the dividing panel comprises an aperture;
f. a piston comprising:
i. a plate, wherein the plate is positioned on a first side of the dividing panel and inside of the pressure chamber, wherein the plate divides the pressure chamber into a first pressure chamber section and a second pressure chamber section, wherein a first surface of the plate is positioned inside the first pressure chamber and a second surface of the plate is positioned inside the second pressure chamber; and
ii. a shaft, wherein the shaft extends through the aperture of the dividing panel and into the liquid flow chamber;
g. a first fluid supply port fluidically connecting the first pressure chamber to the pressurized fluid source; and
h. a second fluid supply port fluidically connecting the second pressure chamber to the pressurized fluid source;
wherein when the pressure regulator is in the open position, the liquid is configured to flow from the pressurized liquid source into the liquid flow chamber through the inlet area and exit the liquid flow chamber through the outlet area and wherein when the pressure regulator is in the closed position, the shaft of the piston is configured to create a seal at the sealing port, thereby preventing flow through the pressure regulator.