Trigger-dispensing device for two or more liquids

Patent metadata

Field	Value
Publication number	US-10137467-B2
Application number	US-201715437144-A
Country	US
Kind code	B2
Filing date	Feb 20, 2017
Priority date	Apr 18, 2014
Publication date	Nov 27, 2018
Grant date	Nov 27, 2018

Abstract

A trigger head for a dispensing device for at least two substances including a pumping system to compress the substances separately and simultaneously before dispensing.

First claim

What is claimed is:

1. A trigger head for a dispensing device comprising:
a trigger;
at least one pump;
a first delivery duct;
a second delivery duct; and
a nozzle group;
wherein the at least one pump is operable by the trigger and suitable for carrying out a predetermined pre-compression of at least two substances, separately and simultaneously before dispensing;
wherein both the first delivery duct and the second delivery duct comprise a flexible tube, and each of the flexible tubes are directly connected to the nozzle group to minimize any premixing of the at least two substances and the flexible tubes have a length suitable to compensate for movement with respect to the nozzle group; and
wherein each of the at least one pump comprises at least one pre-compression valve suitable to pass the respective substance from a pressure chamber to the respective delivery duct when the pressure of the respective substance in the pressure chamber exceeds a predefined threshold pressure and suitable to prevent transit of the respective substance from the pressure chamber to the first delivery duct when the pressure of the respective substance in the pressure chamber is less than the predefined threshold pressure.

2. The trigger head of claim 1 , wherein the flexible tubes are made of extensible material.

3. The trigger head of claim 1 , wherein the first delivery duct and the second delivery duct have different lengths.

4. The trigger head according to claim 1 , wherein the predefined pressure threshold is greater than 1 bar.

5. The trigger head according to claim 1 , wherein the at least one pre-compression valve comprise a first pre-compression valve, operating between a first pressure chamber and the first delivery duct, and a second pre-compression valve, operating between a second pressure chamber and the second delivery duct.

6. The trigger head according to claim 5 , wherein the first pre-compression valve comprises a first obturator plate and the second pre-compression valve comprises a second obturator plate.

7. The trigger head according to claim 5 , wherein the first pre-compression valve comprises a first flexible membrane deformable by an action of the predefined threshold pressure in the first pressure chamber and the second pre-compression valve comprises a second flexible membrane deformable by the action of the predefined threshold pressure in the second pressure chamber.

8. A trigger head for a dispensing device comprising:
a trigger;
a pump, operable by the trigger and suitable for carrying out a predetermined pre-compression of at least two substances, comprising: a first substance and a second substance, separately and simultaneously before dispensing;
a first delivery duct;
a second delivery duct;
a nozzle group; and
an actuator, operable by the trigger, wherein the actuator comprises a transmission member, hinged to a frame and engageable by the trigger, via an intermediate body;
wherein both the first delivery duct and the second delivery duct comprise a flexible tube, and each of the flexible tubes are directly connected to the nozzle group to minimize any premixing of the at least two substances and the flexible tubes have a length suitable to compensate for movement with respect to the nozzle group; and
wherein the pump comprises a pre-compression valve suitable to pass a first substance from a pressure chamber to the first delivery duct when a pressure of the first substance in the pressure chamber exceeds a predefined threshold pressure and suitable to prevent transit of the first substance from the pressure chamber to the first delivery duct when the pressure of the first substance in the pressure chamber is less than the predefined threshold pressure.

9. The trigger head of claim 8 , wherein said intermediate body varies in position during pre-compression.

10. The trigger head of claim 9 , wherein the transmission member is hinged to a frame at a pivot point so that a rotation of the trigger corresponds to a counter-rotation of the transmission member.

11. The trigger head according to claim 8 , wherein the pump comprises a suction valve suitable to allow transit of the first substance from a containment compartment of a bottle of the dispensing device to the pressure chamber in which a piston operates during a suction phase and prevent return of the first substance from the pressure chamber to the containment compartment during a pre-compression step.

12. The trigger head according to claim 11 , wherein the suction valve comprises a first check valve, positioned between a first inlet opening and a first pressure chamber; and a second check valve, positioned between a second inlet opening and a second pressure chamber.

13. The trigger head according to claim 12 , wherein the first check valve comprises a first obturator sensitive to the action of the first substance present in the first pressure chamber and the second check valve comprises a second obturator sensitive to the action of the second substance present in the second pressure chamber.

14. A trigger head for a dispensing device comprising:
a trigger;
a first pump and a second pump, operable by the trigger and suitable for carrying out a predetermined pre-compression of at least two substances, separately and simultaneously before dispensing;
a first delivery duct;
a second delivery duct;
a nozzle group; and
an actuator, operable by the trigger, wherein the actuator comprises a transmission member, hinged to a frame and engageable by the trigger, via an intermediate body;
wherein the first delivery duct and the second delivery duct are separately attached to the nozzle group allowing the two substances to remain separate before entering the nozzle group; and
wherein a first delivery duct comprises a first elbow section which extends through the intermediate body, and a second delivery duct comprises a second elbow section which extends through the intermediate body.

15. The trigger head according to claim 14 , wherein a first axis of the first pump is positioned behind a second axis of the second pump and in the same plane.

16. The trigger head of claim 14 , wherein the first elbow section and the second elbow section have different lengths.

17. The trigger head of claim 14 , wherein the first elbow section is positioned above and in the same plane as the second elbow section.

18. The trigger head according to claim 17 , wherein the nozzle group attached to the frame and extendible tubes sealingly attached to the nozzle group and to the intermediate body, which define sections of the delivery ducts, the extendible tubes being suitable to offset a position variation between the intermediate body and the nozzle group due to movement undergone by the intermediate body during a pre-compression step.

19. The trigger head of claim 14 , wherein a first extendible tube is positioned above and in the same plane as a second extendible tube.

Assignees

• Clorox Co

Inventors

• Alluigi Riccardo

Classifications

• B05B11/007 Primary

  being opened by deformation of a sealing element made of resiliently deformable material, e.g. flaps, skirts, duck-bill valves · CPC title

• B05B11/0078

  Arrangements for separately storing several components (arrangements for pumping several liquids or other fluent materials from several containers B05B11/1081) · CPC title

• B05B11/0064

  Lift valves (B05B11/007 takes precedence) · CPC title

• B05B11/1084

  each liquid or other fluent material being pumped by a separate pump · CPC title

• B05B11/1057

  Triggers, i.e. actuation means consisting of a single lever having one end rotating or pivoting around an axis or a hinge fixedly attached to the container, and another end directly actuated by the user · CPC title