IP Library Granted Patent US 8,747,568
Granted Patent B2
US 8,747,568 · App. 13/680,734 · Granted Jun 10, 2014

Industrial cleaning system and methods related thereto

Inventors: Philip Bear (Burnsville, MN); Kelly Brannick (Oak Grove, MN)
Assignee: North American Industrial Services Inc.
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Quick Facts
Patent No.
US 8,747,568
App. No.
13/680,734
Granted
Jun 10, 2014
Kind
B2
Abstract

A method of cleaning comprising propelling a sublimable media in a first direction through a discharge wand, inserting the discharge end of the wand into coils of a boiler, impinging on inner and outer surfaces the coils with the sublimable media, which subsequently dissipates or is consumed.

Claims (14)

1. A method of cleaning, comprising:

propelling a sublimable media in a first direction through a discharge wand having an operator held end and a discharge end, the discharge end further comprising a nozzle;

inserting the discharge end of the discharge wand into coils of a boiler;

impinging on an inner surface and an outer surface of a coil of the boiler with the sublimable media, wherein the sublimable media exits the discharge end of the discharge wand in at least one second direction different from the first direction; and

wherein the media subsequently dissipates or is consumed.

2. The method of claim 1 , wherein the nozzle forms an angle between the first direction and the second direction of about 45 to about 85 degrees.

3. The method of claim 1 , wherein the media comprises carbon dioxide pellets or liquid nitrogen.

4. The method of claim 1 , wherein the object comprises biofuel production equipment.

5. The method of claim 1 , wherein the discharge wand is straight and at least three feet long.

6. The method of claim 1 , wherein the coils comprise tubes in a biofuel production plant dryer.

7. The method of claim 1 , wherein propelling comprises transferring the media with a transfer gas.

8. The method of claim 7 , wherein the transfer gas comprises air.

9. The method of claim 1 , wherein contacting comprises the sublimable media physically contacting residue or debris in contact with the surfaces.

10. The method of claim 1 , wherein contacting comprises the media sublimating upon contact with the surfaces or residue in contact with the surfaces.

Assignments (4)
RELEASE OF PATENT SECURITY INTEREST Recorded Jan 5, 2024
From: CRESTLINE DIRECT FINANCE, L.P., AS ADMINISTRATIVE AGENT
To: NORTH AMERICAN INDUSTRIAL SERVICES, INC.; EVERGREEN ENVIRONMENTAL SERVICES, L.L.C.
Reel/Frame 066206/0261 →
GRANT OF PATENT SECURITY INTEREST Recorded Aug 18, 2021
From: NORTH AMERICAN INDUSTRIAL SERVICES, INC.; EVERGREEN ENVIRONMENTAL SERVICES, L.L.C.
To: CRESTLINE DIRECT FINANCE, L.P., AS ADMINISTRATIVE AGENT
Reel/Frame 057319/0133 →
GRANT OF PATENT SECURITY INTEREST Recorded Jun 17, 2016
From: NORTH AMERICAN INDUSTRIAL SERVICES, INC.
To: BNP PARIBAS, AS ADMINISTRATIVE AGENT
Reel/Frame 039139/0565 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 3, 2013
From: BEAR, PHILIP; BRANNICK, KELLY
To: NORTH AMERICAN INDUSTRIAL SERVICES INC.
Reel/Frame 031128/0423 →
Continuity (2)
Continuation 12188895 · Aug 8, 2008
Related Publication 20130074880A1 · Mar 28, 2013