Direct pressure apparatus and method for dispensing coatings
AssigneeTerrasimco Inc.
InventorsWalter Neal Simmons, Walter John Simmons
Life of this patent
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Abstract
The invention is related to a coating delivery system that includes at least one pressure vessel operable in sealed and unsealed conditions, a deliverable substance including a coating component interspersed with at least one of liquefied carbon dioxide and supercritical carbon dioxide, and a pressurizing fluid. The deliverable substance is disposed in a first pressure vessel of the at least one pressure vessel, and the pressurizing fluid directly exerts a pressure on the deliverable substance to effect transport thereof when the pressure vessel is in the unsealed condition. The deliverable substance may be spray discharged.
Claims29
A coating delivery system comprising:
- a first pressure vessel operable in sealed and unsealed conditions;
- a deliverable substance comprising a coating component interspersed with at least one of liquefied carbon dioxide and supercritical carbon dioxide;
- a pressurizing fluid,
- wherein the deliverable substance is disposed in the first pressure vessel,
- the pressurizing fluid is provided (1) at a pressure greater than the vapor pressure of carbon dioxide if the deliverable substance comprises liquefied carbon dioxide, or (2) at a pressure greater than the critical pressure of carbon dioxide if the deliverable substance comprises supercritical carbon dioxide,
- and the pressurizing fluid directly exerts a pressure on the deliverable substance to effect transport thereof when the first pressure vessel is in the unsealed condition.
A method of applying a coating to a substrate comprising:
- providing a deliverable substance in a first pressure vessel, the deliverable substance comprising a coating component interspersed with at least one of liquefied carbon dioxide and supercritical carbon dioxide;
- providing a first fluid capable of applying pressure to the deliverable substance;
- allowing the first fluid to directly apply pressure to the deliverable substance (1) at a pressure at least the vapor pressure of carbon dioxide if the deliverable substance comprises liquefied carbon dioxide, or (2) at a pressure at least the critical pressure of carbon dioxide if the deliverable substance comprises supercritical carbon dioxide;
- delivering the deliverable substance to the substrate.
Dependencies are inferred from the claim text.