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  Aerosol sandblastUSPTO Application #: 20060211339Title: Aerosol sandblast Abstract: A pressurized gas or liquid mixture of particulates, or an aggregate of particulates, to be delivered in an aerosol spray through a self-contained container to remove paint, stains and the like from various surfaces, such as wood or metal. The aerosol aggregate mixture can additionally include paint removers or cleaners and is sprayed directly on objects or surfaces to abrasively remove paint or stains in an uniform manner without destroying any fine details. (end of abstract)
Agent: Carolyn Lu - Los Angeles, CA, US Inventor: John R. Woods USPTO Applicaton #: 20060211339 - Class: 451028000 (USPTO) Related Patent Categories: Abrading, Abrading Process The Patent Description & Claims data below is from USPTO Patent Application 20060211339. Brief Patent Description - Full Patent Description - Patent Application Claims
RELATED APPLICATIONS [0001] This application claims the benefit of U.S. Provisional Application No. 60/662,660 titled "AEROSOL SANDBLAST," filed Mar. 17, 2005, which is herein incorporated by reference in its entirety. BACKGROUND OF THE INVENTION [0002] 1. Field of Invention [0003] Embodiments of the present invention relate generally to the delivery of a pressurized gas or liquid aggregate, for use with a self-contained container, that can remove paint, stains and the like from various surfaces. More particularly, embodiments of the present invention relate to an aerosol aggregate mixture that can be sprayed to abrasively remove paint or stains from wood or metal without destroying any fine details. [0004] 2. Description of Related Art [0005] Methods and products used to remove paint or stains are generally known in the art and used to prepare a surface for refurbishment or repainting. For example, paint or stain-removing solvents may be applied manually to various surfaces to remove paint or stains. Such solvents can be applied to wood to remove an old coat of paint so that a new layer may be applied uniformly or to remove unwanted stains, such as graffiti, from walls. Such solvents may also be used to remove rust or rust stains from corroded metal in order to repair an object. Similarly, other like solvents may be used to clean other objects such as car engines. [0006] The traditional processes, however, often encounter inconsistent removal of the paint or stains. For example, in the case of a finely detailed wood or metal surface or object, it is very difficult to remove the paint or rust stains from the grooves and recesses. This is a common problem in cleaning antique objects. Likewise, in handling smaller objects, it is complicated to uniformly apply the solvents to small crevices to remove the paint or stains. This is also problematic because the application of an excessive amount often damages the object or surface being cleaned, while the application of an insufficient amount yields insufficient contact with the paint or stain, giving poor removal results. [0007] Another traditional method avoids the above-mentioned complications by dipping the small or detailed objects directly into large batches of chemical solution to strip off the paint or stains. In this way, the chemicals may contact all surfaces of the object, including any small grooves and recesses, to uniformly strip the paint or stains. However, this method presents different problems in that the chemicals commonly used are highly toxic and may emit noxious fumes. This method allows dangerous fumes to be released indiscriminately into the atmosphere in often excessive amounts. Consequently, necessary safety precautions associated with these procedures render the method more costly and complicated. [0008] Therefore, there exists a long-standing need to provide a safe and effective product that can be applied in an efficient and simple manner to remove old paint or stains from any wood or metal surface consistently, including those surfaces with fine details. BRIEF SUMMARY [0009] In accordance with an embodiment of the invention, a self-contained aerosol container has been developed for use in association with sandblasting, a method of stripping off paint and stains from a surface. The hand-held container can deliver an aerosol application of a pressurized gas or liquid containing abrasive particulates to uniformly remove paint or stains from any wood or metal surface, including those with fine details. The particulates may include glass beads, pumice, sand, sand paper or the like. The aerosol container and the sprayed mixture provide an efficient, safe, and less costly way than the traditional methods used to remove paint or stains from a surface. [0010] In one embodiment, the mixture may contain one or an aggregate of glass beads, pumice, sand, sand paper or the like to enhance the abrasiveness of the sandblasting. By exposing the surface or object to the aerosol spray, the spray may then be directed uniformly to all the smaller groves and recesses that would otherwise be difficult to reach manually. Furthermore, the aggregates are small and fine with sharp edges, and thus are able to access the grooves and recesses in wooden or metal surfaces to remove the paint or stains without destroying any details. [0011] The sandblasting container according to an embodiment of the invention may contain a propellant, such as compressed air or liquid gas, to further facilitate the force of expulsion and blast velocity with which the aerosol spray is released. The propellant may also enhance the area performance of the blast (i e., the area of paint or stain removed). [0012] In another embodiment of the invention, the mixture held in the container may be one of water or solvent-based paint removers. For example, a water-based solvent may be a citrus derivative, while a solvent-based solvent may be xylene. [0013] Alternatively, the mixture held in the container may be composed of a combination of aggregates suspended in a solvent. A combination of a solvent and aggregates may make stripping paint and stains even more efficient. The mixture may contain any combination of aggregates and any number of solvents or cleaners. In an embodiment of the invention, the aggregate is blasted along with one or more paint-removing solvents or cleaner such as engine cleaner. By using a combination of paint removers admixed with one or more aggregates, the impact of the blast is enhanced. The combination softens the paint or stains, helping to make the removal process simpler and faster. [0014] In yet another embodiment, the container may further include a thicksotropic thickener to suspend the aggregate in the mixture. The thicksotropic is added to thicken the liquid component in which the aggregate is suspended. This may change the concentration and impact of the aerosol spray and also ensure that the aggregates are uniformly dispersed when released. [0015] Depending on the type of surface to be sprayed, and the material to be stripped off or removed from that surface, the user may tailor the aerosol sandblast by using specific aggregates or combining different mixtures of aggregates with liquid components. Each aggregate, or combination of aggregate with liquid components, will yield different capabilities that may be used accordingly with specific surfaces to be stripped and cleaned. BRIEF DESCRIPTION OF THE DRAWINGS [0016] A detailed description of embodiments of the invention will be made with reference to the accompanying drawings, wherein like numerals designate corresponding parts in the figures. [0017] FIG. 1 is a cross-sectional view of a self-contained container delivering an aerosol spray to remove paint from a surface according to an embodiment of the invention. [0018] FIG. 2 is a diagrammatic representation of a sandblast aggregate according to an embodiment of the invention. [0019] FIG. 3 is a block diagram of a procedure to remove paint or stains from a surface. [0020] FIG. 4 is a cross-sectional view of a self-contained container including a reservoir of paint remover according to an embodiment of the invention. Continue reading... Full patent description for Aerosol sandblast Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Aerosol sandblast patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Aerosol sandblast or other areas of interest. ### Previous Patent Application: Method for removing material from a semiconductor wafer Next Patent Application: Method and tool for maintenance of hard surfaces, and a method for manufacturing such a tool Industry Class: Abrading ### FreshPatents.com Support Thank you for viewing the Aerosol sandblast patent info. 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