Trigger dispenser device with a venting valve

Patent metadata

Field	Value
Publication number	US-10293358-B2
Application number	US-201515311462-A
Country	US
Kind code	B2
Filing date	May 25, 2015
Priority date	Jul 11, 2014
Publication date	May 21, 2019
Grant date	May 21, 2019

Abstract

A head (10) of a trigger dispenser device includes a bulb (70) having an elastically deformable casing (72) that includes a vent lip (90), molded in one piece. With the casing (72), the vent lip (90) forms a venting valve.

First claim

The invention claimed is:

1. A trigger dispensing head for a liquid, mounted on a bottle, comprising:
a frame comprising an annular spacer wall defining a main axis and internally delimits a compartment;
a separation wall which cooperates with the annular spacer wall to close at least partially the compartment, wherein the separation wall is crossed by a vent passage, the compartment being in communication with the external environment through the vent passage;
a trigger, rotatably or translatably engaged with the frame;
a bulb coupled to the separation wall, comprising an elastically deformable casing which, together with the separation wall, delimits a pressure chamber;
a dispensing duct in communication with the pressure chamber to dispense the liquid outwards;
a coupler for the stable coupling of the bulb to the separation wall, the coupler comprising an attachment rim arranged at one axial end edge of an auxiliary wall;
wherein the bulb comprises a vent lip, molded in one piece with the casing, the vent lip sealingly closing the vent passage to form a venting valve; and
wherein said coupler for the stable coupling of the bulb further comprises a plurality of attachment fins angularly spaced and disposed circumferentially along said axial end edge of the auxiliary wall;
wherein each attachment fin has a foot, coupled to the auxiliary wall, and an enlarged portion that forms a bulge with respect to the foot, projecting radially internally; and
wherein the attachment fins interfere with the bulb by the enlarged portion and form a stable coupling to the separation wall on an imaginary plane perpendicular to the main axis.

2. Head according to claim 1 , wherein the lip has a predefined limited angular movement and rotates less than 360 degrees when opening.

3. Head according to claim 2 , wherein the lip has an angular extension between 50° and 70°.

4. Head according to claim 1 , wherein
the casing comprises an annular side wall ending with an end region and the separation wall comprises an inner skirt having axial extension, and wherein
the end region of the annular side wall seals with the inner skirt of the separation wall to form a valve dispenser.

5. Head according to claim 1 , wherein the casing comprises a sealing wall and the separation wall comprises an outer skirt having axial extension, and
wherein the sealing wall of the casing is placed in sealing contact with the outer skirt of the separation wall and at least partly defines an intermediate chamber into which the dispensing duct opens.

6. Head according to claim 1 , wherein the bulb comprises a belt surrounding the casing, radially spaced from the casing, and the vent lip protrudes from the belt.

7. Head according to claim 6 , wherein the belt is inserted between the auxiliary wall and an outer skirt of the separation wall having axial extension.

8. Head according to claim 1 , wherein the enlarged portion is flared upward.

9. Head according to claim 1 , wherein the separation wall is molded in a single piece with the frame.

10. Head according to claim 1 , wherein the auxiliary wall is molded in a single piece with the frame.

11. Head according to claim 1 , wherein the bulb is molded in a single piece.

12. Head according to claim 1 , wherein the trigger comprises an actuating portion, operable by the fingers of a user and ending at a free end radially spaced from the main axis, and a hinge portion, arranged on the side opposite the free end with respect to the main axis and hinged to the frame.

13. A trigger dispenser for a liquid, comprising:
a bottle;
a trigger dispensing head mounted on the bottle, comprising:
a frame comprising an annular spacer wall which defines a main axis and internally delimits a compartment;
a separation wall which cooperates with the annular spacer wall to close at least partially the compartment, wherein the separation wall is crossed by a vent passage, the compartment being in communication with the external environment through the vent passage;
a trigger, rotatably or translatably engaged with the frame;
a bulb coupled to the separation wall, comprising an elastically deformable casing which, together with the separation wall, delimits a pressure chamber;
a dispensing duct in communication with the pressure chamber to dispense the liquid outwards;
a coupler for stable coupling of the bulb to the separation wall, the coupler comprising an attachment rim arranged at one axial end edge of an auxiliary wall and said coupler further comprising a plurality of attachment fins angularly spaced and disposed circumferentially along the axial end edge of the auxiliary wall;

wherein the bulb comprises a vent lip, molded in one piece with the casing, the vent lip sealingly closing the vent passage to form a venting valve;
wherein each of the attachment fins has a foot, coupled to the auxiliary wall, and an enlarged portion that forms a bulge with respect to the foot, projecting radially internally;
wherein the attachment fins interfere with the bulb by the enlarged portion and form a stable coupling to the separation wall on an imaginary plane perpendicular to the main axis.

Assignees

• Guala Dispensing Spa

Inventors

• Alluigi Riccardo

Classifications

• 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

• B05B11/1035

  the pumping chamber being a bellow · CPC title

• B05B11/1045

  the pump being preassembled as an independent unit before being mounted on the container (B05B11/1047, B05B11/1049 take precedence) · CPC title

• B05B11/00442 Primary

  the means being actuated by the difference between the atmospheric pressure and the pressure inside the container · CPC title

• B05B11/103

  without substantial movement of the nozzle in the direction of the pressure stroke · CPC title