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Sprayer for application of textured finish to surfacesSprayer for application of textured finish to surfaces description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20070286748, Sprayer for application of textured finish to surfaces. Brief Patent Description - Full Patent Description - Patent Application Claims
REFERENCE TO RELATED APPLICATION [0001]The present application is a continuation-in part of patent application Ser. No. 11/450,812 of inventor Eran Zagorsky titled "Sprayer For Application of Textured Finish to Surfaces" filed Jun. 12, 2006 in the United States Patent and Trademark Office. BACKGROUND [0002]1. Field of the Invention [0003]The present invention relates to sprayers for use in the application of textured finishes to surfaces. More particularly, this invention pertains to a convenient and user-friendly sprayer unit for jobs of relatively-limited scope. [0004]2. Description of the Prior Art [0005]Texture spray equipment for use in small and medium size jobs that offers quick set-up, easy disassembly, compactness, portability and interchangeability of parts for quick, inexpensive repair has been developed over the years to address the inadequacies of bulky drywall material spraying systems for pumping liquids at job locations. Such bulky systems require mounting onto vehicles or trailers for ease of transportation and are characterized by, for example, large storage tanks that render their usage economical only for large jobs. [0006]Examples of such spray equipment for smaller jobs include the sprayer taught by U.S. Pat. No. 5,967,426 of McLoed covering "Knockdown portable Liquid Drywall Material Spray System and Apparatus" and others. Such systems are typically mounted on a wheelable cart-like frame and interact with a compressor to provide a controllable spray of material for adhering onto a surface. [0007]FIG. 1 is a schematic view of a generalized texture deposition system 10 of the type discussed above. The sprayer 11 of the sprayer system is indicated in broken outline. A hopper 12 is arranged to receive input material 14 for eventual deposition onto a surface. The material (e.g. drywall) 14 is transferred, generally by means of gravity feed, into a pump 16 of the screw-feed (rotor and stator) type. The pump 16 advances the received material 14 linearly toward a nozzle 18, in response to the output of an electric motor 20 whose speed and power are selectively controlled by means of a control box 22. [0008]A hose 24 is fitted to the nozzle 18 to receive the material 14 at a predetermined flow rate. The material hose 24 feeds the flowing material to a gun 26. A second input to the gun 26 comprises an air flow generated by a compressor 28 and delivered through an air hose 30. The relative flow parameters of material 14 through the material hose 24 and air through the air hose 30 to the gun 26 determine the thickness and texture of the resultant material deposited upon a surface. [0009]While texture deposition systems as described above may be configured for suitability for small and medium sized jobs, such equipment is often not user friendly. Although relatively portable, operation of such wheeled equipment is complicated by such limitations as spillage of material from the hopper 12 and shorting of the circuitry of the control box 22 as a result of weather. Furthermore, the sprayer 11 often requires disassembly of the pump 16 after period of extended non-use as a result of adhesion of the internal rotor to a surrounding layer of rubber within the stator. SUMMARY OF THE INVENTION [0010]The present invention addresses the preceding and other shortcomings of the prior art by providing apparatus for fixing an elongated, substantially-cylindrical stator to a pump housing block of a sprayer. [0011]Such apparatus includes a collar fixed exterior and adjacent an end of the stator. The collar has at least one indentation arranged about the circumference of the stator. At least one clip that includes a crimped portion is pivotally engaged to the exterior of the pump housing block. [0012]At least one aperture is provided in the pump housing block. Such aperture is located with respect to a clip so that the crimped portion of the pivotally-mounted clip protrudes within the interior of the pump housing block when the clip is rotated to a closed position to engage an indentation of the collar. [0013]The foregoing and other features of the invention will become further apparent from the detailed description below. Such description is accompanied by a set of drawing figures. Numerals of the drawing figures, corresponding to those of the written description, point to the features of the invention with like numerals referring to like features throughout. BRIEF DESCRIPTION OF THE DRAWINGS [0014]FIG. 1 is a schematic view of a sprayer system in accordance with the prior art; [0015]FIGS. 2a through 2c are a perspective view, a partially exploded side elevation view and an exploded perspective view of the cover assembly, respectively, of a sprayer in accordance with an embodiment of the invention; [0016]FIGS. 3a through 3c are a side sectional view of the pump, a frontal view of the free end of the cartridge shaft and an enlarged exploded perspective view of the relationship of the pump to the stator assembly respectively, of a sprayer in accordance with an embodiment of the invention; [0017]FIGS. 4a and 4b are perspective views in juxtaposition of the hopper and the transport frame, respectively, of a sprayer in accordance with an embodiment of the invention; and [0018]FIG. 5 is a perspective view of a removable control box engaged to the frame of a sprayer in accordance with an embodiment of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT [0019]FIGS. 2a through 2c are a perspective view, a partially exploded side elevation view and an exploded perspective view of the cover assembly, respectively, of a sprayer in accordance with an embodiment of the invention. Such a sprayer includes numerous user-friendly features that facilitate maintenance, portability and usability. As a result, the device of the invention further advances the ability of a user to complete low volume texturizing jobs in an efficient manner and absent the "overkill" of large-scale systems. Continue reading about Sprayer for application of textured finish to surfaces... Full patent description for Sprayer for application of textured finish to surfaces Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Sprayer for application of textured finish to surfaces patent application. 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