# US 8,769,818 B2 · Spray head for fluid product

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- Number: US 8,769,818 B2
- Document ID: US8769818B2
- Status: Granted
- Kind: B2
- Application number: 12/949,933
- Filed: 2010-11-19
- Published: 2011-03-17
- Granted: 2014-07-08
- Earliest claimed: 2003-08-04
- Assignees: Aptar France SAS
- Applicants: Arnaud Helie; Philippe Herouin
- Inventors: Arnaud Helie; Philippe Herouin
- Web page: https://patentgrep.com/patent/US8769818B2

## CPC

- B05B 1/3494: {the discharge outlet being not on the axis of the swirl chamber}
- B05B 1/3436: {the interface being a plane perpendicular to the outlet axis}
- Y10T 29/49401: Fluid pattern dispersing device making, e.g., ink jet
- Y10T 29/49432: Nozzle making
- Y10T 29/49433: Sprayer
- B05B: SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES (spray-mixers with nozzles B01F25/72; processes for applying liquids or other fluent materials to surfaces by spraying B05D)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A fluid spray head comprising an expulsion channel provided with a spray orifice (1) and a spray profile (10) formed in an end wall of said expulsion channel, said spray profile (10) comprising non-radial spray channels (11) opening out to a central spray chamber (12) disposed directly upstream from said spray orifice (1), the central axis (X) of said spray orifice (1) being offset from the central axis (Y) of the spray chamber (12) by a distance that is less than 0.12 mm, and preferably less than 0.08 mm.

## Claims

### Claim 1

A method for manufacturing an elongate nasal spray head, said elongate nasal spray head including a spray orifice and being formed of only two parts, an external part forming the head, and an internal part forming an insert that is inserted through the inside of the elongate nasal spray head, thus forming an internal nozzle that cannot be expelled out of said elongate nasal spray head during dispensing of a spray through said spray orifice, said method comprising:
forming in a manufacturing machine a hollow cavity comprising an inner shape that is complementary to an outer shape of the elongate nasal spray head;
forming in the manufacturing machine a cavity insert from a pin by:
providing a first projection on an end of the pin that has a shape complementary to a shape of a spray chamber of the elongate nasal spray head;
providing a second projection on the end of the pin that has a shape complementary to a shape of at least one non-radial spray channel;
providing a third projection on the end of the pin that has a shape complementary to said spray orifice of the elongate nasal spray head;
placing the pin in the hollow cavity;
forming the elongate nasal spray head by injecting material into a space formed in the manufacturing machine between the hollow cavity and the pin;
securing the third projection that corresponds with the spray orifice to the pin by a removable needle.

### Claim 2 (depends on 1)

A method according to claim 1, further comprising:
forming a plurality of elongate nasal spray heads from the hollow cavity and the pin;
wherein the standard deviation of an offset of a central axis of the spray orifice relative to a central axis of the spray chamber for all of the elongate nasal spray heads is less than 0.03 mm.

### Claim 3 (depends on 1)

A method according to claim 1, further comprising:
forming a plurality of elongate nasal spray heads from the hollow cavity and the pin;
wherein the standard deviation of an offset of a central axis of the spray orifice relative to a central axis of the spray chamber for all of the elongate nasal spray heads is less than 0.01 mm.

### Claim 4

A method for manufacturing an elongate nasal spray head, said elongate nasal spray head including a spray orifice and being formed of only two parts, an external part forming the elongate nasal spray head, and an internal part forming an insert that is inserted through the inside of the head, thus forming an internal nozzle that cannot be expelled out of said elongate nasal spray head during dispensing of a spray through said spray orifice, said method comprising:
providing a manufacturing machine comprising a mold having a mold cavity;
providing a core pin of the manufacturing machine for inserting into the mold cavity;
wherein the core pin includes:
a first projection on an end of the core pin that has a shape complementary to a shape of a spray chamber of the elongate nasal spray head;
a second projection on the end of the pin that has a shape complementary to a shape of at least one non-radial spray channel;
a third projection on the end of the pin that has a shape complementary to said spray orifice of the elongate nasal spray head, wherein said third projection having a shape complementary to spray orifice of the elongate nasal spray head is formed on a removable needle removably disposed in the core pin;
placing the core pin in the mold cavity;
injecting material into a space formed between the hollow cavity and the core pin to form the elongate nasal spray head.

### Claim 5 (depends on 4)

The method according to claim 4, wherein the removable needle extends longitudinally inside the core pin.

### Claim 6 (depends on 4)

The method according to claim 4, further comprising removing the removable needle from the core pin by pushing on an end of the removable needle.