Foaming Liquid Dispenser

• US 20130200098A1
• Filed: 10/21/2011
• Published: 08/08/2013
• Est. Priority Date: 10/26/2010
• Status: Active Grant

• Current Assignee: RB Health (US) LLC (Reckitt Benckiser Group PLC)
• Original Assignee: Reckitt Benckiser LLC (Reckitt Benckiser Group PLC)
• Inventors: Liang, ZhiHao, Zhou, XianZhi, Li, MingDong
• Granted Patent: US 8,955,719 B2
• Time in Patent Office: Days
• US Class Current: 222/52
• CPC Class Codes: A47K 5/16 with mechanical drive food mixers A47J43/04
• CPC Class Codes: B05B 12/02 for controlling time, or sequence, of delivery
• CPC Class Codes: B05B 7/0025 with a compressed gas supply
• CPC Class Codes: B05B 7/0037 including sieves, porous members or the like
• CPC Class Codes: B05B 7/2464 a liquid being fed by mechanical pumping from the container to the nozzle
• CPC Class Codes: B05B 7/262 a liquid and a gas being brought together before entering the discharge device
• CPC Class Codes: B67D 7/08 Arrangements of devices for controlling, indicating, metering or registering quantity or price of liquid transferred arrangement of flow- or pressure-control valves B67D7/36; computing, calculating, counting G06; coin-freed apparatus for dispensing fluids G07F13/00; prepayment devices for metering liquids G07F15/00

Abstract

Disclosed is a foaming pump mechanism for dispensing a foamable or foaming liquid composition, as well as dispensers for delivery of a foaming or foamable liquid composition therefrom, which is operable by a non-contact interaction with the user.

Claims

1. A foaming pump mechanism for dispensing a foamable or foaming liquid composition which comprises:

a liquid cylinder in fluid communication with a supply of a foaming or foamable liquid composition and in fluid communication with a dispensing nozzle, the liquid cylinder further including a bore and a liquid cylinder piston moveable with the bore;

an air cylinder in fluid communication with the dispensing nozzle,

the dispensing nozzle includes an a liquid inlet port, an air inlet port, further downstream thereof at least one screen and a delivery outlet,

wherein the volumetric ratios of the volumes of the liquid cylinder and the air cylinder between the base and peak of the stroke cycles is between 1;

0.1-25.

2. The foaming pump mechanism according to claim 1 wherein:

the volumetric ratios of the volumes of the liquid cylinder and the air cylinder between the base and peak of the stroke cycles is between 1;

1-20.

3. The foaming pump mechanism according to claim 1 wherein:

the volumetric ratios of the volumes of the liquid cylinder and the air cylinder between the base and peak of the stroke cycles is between 1;

5-15.

4. The foaming pump mechanism according to claim 1 wherein:

downstream of the bore of the liquid cylinder is present a liquid outlet valve which comprises;

a valve bore, a biasing spring, a bore shoulder, a valve seat and a valve mounted on a valve shaft said valve shaft extending into the bore.

5. The foaming pump mechanism according to claim 1 wherein:

the dispensing nozzle includes only a single screen.

6. A dispenser for providing a foamable or foaming liquid composition to a user which comprises:

a reservoir which forms part of the dispenser, and

a foaming pump mechanism according to claim 1.

7. The dispenser according to claim 6 wherein the reservoir is a refill unit insertable into a base of the dispenser.

8. The dispenser according to claim 6, wherein the dispenser initiates dispensing by a non-contact interaction with the user.

9. The dispenser according to claim 6 wherein the foaming pump mechanism is manually powered.

10. The dispenser according to claim 6 wherein the foaming pump mechanism is driven by a motor.

11. The foaming pump mechanism according to claim 3 further comprising a liquid outlet valve, located downstream of the bore of the liquid cylinder, wherein the liquid outlet valve comprises a valve bore, a biasing spring, a bore shoulder, a valve seat and a valve mounted on a valve shaft said valve shaft extending into the bore.

12. The foaming pump mechanism according to claim 11, wherein the dispensing nozzle includes only a single screen.

13. The dispenser according to claim 6, wherein the volumetric ratios of the volumes of the liquid cylinder and the air cylinder between the base and peak of the stroke cycles is between 1:

5-15

14. The dispenser according to claim 13, wherein the reservoir is a refill unit insertable into a base of the dispenser.

15. The dispenser according to claim 13, wherein the dispenser initiates dispensing by a non-contact interaction with the user.

16. The dispenser according to claim 13, wherein the foaming pump mechanism is manually powered.

17. The dispenser according to claim 13, wherein the foaming pump mechanism is driven by a motor.