	US 11,992,858 C1 (13,188th)
	Adhesive dispensing system and method
Michael Jay Calaman, Carlisle, PA (US); and Timothy E. Curtis, Carlisle, PA (US)
Filed by 4 C's Spray Equipment Rental LLC, Carlisle, PA (US)
Assigned to 4 C'S SPRAY EQUIPMENT RENTAL, LLC, Carlisle, PA (US)
Reexamination Request No. 90/019,935, Apr. 29, 2025.
Reexamination Certificate for Patent 11,992,858, issued May 28, 2024, Appl. No. 18/099,753, Jan. 20, 2023.
Application 90/019,935 is a continuation of application No. 16/918,340, filed on Jul. 1, 2020, granted, now 11,559,820.
Application 16/918,340 is a continuation of application No. 16/126,203, filed on Sep. 10, 2018, granted, now 10,434,538.
Application 16/126,203 is a continuation of application No. 16/039,762, filed on Jul. 19, 2018, granted, now 10,751,748.
Claims priority of provisional application 62/534,390, filed on Jul. 19, 2017.
Ex Parte Reexamination Certificate issued on Feb. 20, 2026.
Int. Cl. B05C 17/00 (2006.01); B05B 7/00 (2006.01); B05B 7/02 (2006.01); B05B 7/04 (2006.01); B05B 7/08 (2006.01); B05B 7/24 (2006.01)

CPC B05C 17/002 (2013.01) [B05B 7/0081 (2013.01); B05B 7/025 (2013.01); B05B 7/0408 (2013.01); B05B 7/0483 (2013.01); B05B 7/0876 (2013.01); B05B 7/241 (2013.01); B05B 7/2497 (2013.01)]

AS A RESULT OF REEXAMINATION, IT HAS BEEN DETERMINED THAT:

Claims 1-10 and 12-16 are determined to be patentable as amended.

Claim 11, dependent on an amended claim, is determined to be patentable.

1. A method for dispensing first and second adhesive component fluids comprising the steps of:

(a) providing a dispensing head having a first head passage extending from an upstream first head passage inlet to a downstream first head passage outlet and a second head passage extending from an upstream second head passage inlet to a downstream second head passage outlet, said second head passage not in fluid communication with said first head passage;

(b) providing a [ disposable ] mixing tip having a [ disposable ] mixing tip passage extending from an upstream mixing tip passage inlet to a downstream mixing tip passage outlet, said first head passage outlet and said second head passage outlet in fluid communication with said mixing tip passage inlet;

(c) providing a first adhesive component fluid [ in said first head passage ] or a second adhesive component fluid [ in said second head passage ] or an adhesive formed by mixing said first adhesive component with said second adhesive component in said mixing tip passage;

(d) providing pressurized air to said mixing tip passage upstream of said mixing tip passage ~~outlet~~ [ inlet to aerate at least one of said first adhesive component fluid in said first head passage or said second adhesive component fluid in said second head passage] ; and

(e) dispensing said first adhesive component fluid or second adhesive component fluid or adhesive from said mixing tip passage outlet until said first adhesive component no longer remains in said [ disposable ] mixing tip passage, said second adhesive component fluid no longer remains in said [ disposable ] mixing tip passage or said adhesive no longer remains in said [ disposable ] mixing tip passage.

2. The method of claim 1 wherein step (d) comprises providing [ said ] pressurized air in a range of 10 to 150 psi.

3. The method of claim 1 wherein step (d) comprises flowing said pressurized air [ downstream ] from said mixing tip inlet to said mixing tip outlet.

4. The method of claim 1 wherein step (d) comprises flowing said pressurized air [ downstream ] from said first head passage or said second head passage [ through said disposable mixing tip passage ] to said mixing tip outlet.

5. A method for dispensing first and second adhesive component fluids comprising the steps of:

(c) providing a first adhesive component fluid in said first head passage or providing a second adhesive component fluid in said second head passage or providing at least one of a first adhesive component fluid, a second adhesive component fluid or an adhesive formed by mixing said first adhesive component with said second adhesive component in said [ disposable ] mixing tip passage;

(d) aerating at least one of said first adhesive component fluid in said first head passage or said second adhesive component fluid in said second head passage ~~or said first adhesive component fluid, said second adhesive component fluid or said adhesive in said mixing tip passage~~ [ by introducing said pressurized air upstream of said mixing tip passage inlet] ; and

(e) dispensing said adhesive from said [ disposable ] mixing tip passage outlet.

6. The method of claim 5 wherein step (d) ~~aerating~~ comprises ~~flowing~~ [ introducing said ] pressurized air to said first head passage or said second head passage.

7. The method of claim 5 wherein step (d) ~~aerating~~ comprises flowing [ said ] pressurized air downstream from said first head passage outlet or said second head passage outlet.

8. The method of claim 5 wherein step (d) ~~aerating~~ comprises flowing [ said ] pressurized air downstream from said mixing tip inlet to said mixing tip outlet.

9. The method of claim 5 wherein said step (d) ~~aerating~~ comprises regulating a flow of pressurized air with a regulator valve.

10. A method for dispensing first and second adhesive component fluids comprising the steps of:

(a) providing a first adhesive component fluid stored within a first fluid storage container;

(b) providing a second adhesive component fluid stored within a second fluid storage container;

(c) providing a dispensing head having a first head passage extending from an upstream first head passage inlet to a downstream first head passage outlet and a second head passage extending from an upstream second head passage inlet to a downstream second head passage outlet, said second head passage not in fluid communication with said first head passage;

(d) providing a [ disposable ] mixing tip having a [ disposable ] mixing tip passage extending from an upstream mixing tip passage inlet to a downstream mixing tip passage outlet, said first head passage outlet and said second head passage outlet in fluid communication with said mixing tip passage inlet;

(e) flowing said first adhesive component fluid from said first fluid storage container to said first head passage inlet and to said mixing tip passage;

(f) flowing said second adhesive component fluid from said second fluid storage container to said second head passage inlet and to said mixing tip passage;

(g) mixing a portion of said first adhesive component fluid with said second adhesive component fluid to form an adhesive in said mixing tip passage; and

(h) aerating at least one of said first adhesive component fluid in said first head passage or said second adhesive component fluid in said second head passage ~~or said adhesive in said mixing tip passage~~ [ by introducing said pressurized air upstream of said mixing tip passage inlet] .

12. The method of claim 10 wherein step (h) comprises flowing [ said ] pressurized air downstream from said first head passage or said second head passage.

13. The method of claim 10 wherein step (h) comprises flowing [ said ] pressurized air downstream from said first head passage outlet or said second head passage outlet.

14. The method of claim 10 wherein step (h) comprises flowing [ said ] pressurized air downstream from said mixing tip inlet.

15. The method of claim 10 wherein said step (h) ~~aerating~~ comprises regulating ~~a flow of~~ [ said ] pressurized air with a regulator valve.

16. The method of claim 15. wherein step (k) comprises flowing said flow of pressurized air through said [ disposable ] mixing tip passage until said first adhesive component fluid, said second adhesive component fluid or said adhesive no longer remains in said [ disposable ] mixing tip passage.