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  Emitter apparatusUSPTO Application #: 20070077530Title: Emitter apparatus Abstract: A gas fired infrared radiation emitter that contains a frame, a screen assembly attached to the frame, and a device for locking the screen assembly to the frame. The screen assembly contains a support rod structure and at least four attachment rings attached to a screen. Each of the attachment rings is contiguous with a portion of the screen and, at the point at which each such attachment ring is contiguous with the screen, forms a screen contact point. The distance between any one screen contact point and the closest adjacent screen contact point does not exceed 75 millimeters. (end of abstract) Agent: Howard J. Greenwald P.C. - East Rochester, NY, US Inventor: Jens-Uwe Meyer USPTO Applicaton #: 20070077530 - Class: 431329000 (USPTO) Related Patent Categories: Combustion, Porous, Capillary, Particulate Or Sievelike Flame Holder, E.g., Radiant Surface Burner, Etc., Means Supplying Fuel For Passage Through The Flame Holding Structure, E.g., Radiant Surface Burner, Woven Screen Holds Flame The Patent Description & Claims data below is from USPTO Patent Application 20070077530. Brief Patent Description - Full Patent Description - Patent Application Claims
CROSS-REFERENCE TO RELATED PATENT APPLICATION [0001] This patent application claims priority based upon applicants' provisional patent application 60/719,481, filed on Sep. 22, 2005. FIELD OF THE INVENTION [0002] A gas fired infrared radiation emitter with improved screen life, improved energy efficiency and improved, and improved durability. BACKGROUND OF THE INVENTION [0003] U.S. Pat. No. 6,007,329, the entire disclosure of which is hereby incorporated by reference into this specification, described and claimed a novel gas fired infrared radiation emitter. U.S. Pat. No. 6,514,071 improved upon the emitter with design aspects aimed at improving durability. U.S. Pat. No. 6,514,071, the entire disclosure of which is hereby incorporated by reference into this specification, describes and claims: "A gas-fired infrared radiation emitter, comprising a frame, a screen removably attached to said frame, and means for releasably locking said screen to said frame, wherein said frame is comprised of a first side, a second side, a first end, and a second end, and wherein: (a) said first side of said frame is integrally connected to a first receptacle, a second receptacle, and a third receptacle; (b) said second side of said frame is integrally connected to a fourth receptacle, a fifth receptacle, and a sixth receptacle; (c) said first end of said frame is integrally connected to a first support, and said second end of said frame is integrally connected to a second support, wherein said screen is contiguous with said first support and said second support; (d) said means for releasably locking said screen to said frame is comprised of a first bar removably disposed within said first receptacle and said fourth receptacle, a second bar removably disposed within said second receptacle and said fifth receptacle, and a third bar removably disposed within said third receptacle and said sixth receptacle, wherein each of said first bar, said second bar, and said third bar is disposed less than about 0.2 inches from said screen; (e) said emitter further comprises means for allowing movement of said first bar, said second bar, and said third bar towards one of said first side and said second side for at least about 0.15 inches; (f) said emitter further comprises means for limiting the movement of said first bar, said second bar, and said third bar towards one of said first side and said second side; and (g) said emitter further comprises a fourth bar extending between said first end and said second end, wherein said fourth bar is removably connected to said first bar, said second bar, and said third bar . . . wherein each of said first receptacle, said second receptacle, said third receptacle, said fourth receptacle, said fifth receptacle, and said sixth receptacle extend through said screen . . . . wherein each of said first receptacle, said second receptacle, said third receptacle, said fourth receptacle, said fifth receptacle, and said sixth receptacle is comprised of an orifice . . . further comprising a third support integrally connected to said first end of said frame . . . further comprising a fourth support integrally connected to said second end of said frame . . . wherein said screen is contiguous with said third support and said fourth support . . . further comprising a seventh receptacle integrally connected to said first end of said emitter . . . further comprising an eighth receptacle integrally connected to said second end of said emitter . . . wherein said fourth bar is removably disposed within said seventh receptacle and said eighth receptacle . . . further comprising means for allowing movement of said fourth bar for at least about 0.15 inches . . . comprising first means for limiting the movement of said fourth bar . . . comprising second means for limiting the movement of said fourth bar . . . further comprising a back body . . . further comprising a distributor . . . wherein each of said first support, said second support, said third support, and said fourth support has a height of from about 0.2 to about 0.6 inches . . . wherein said orifice is a slotted orifice . . . wherein said emitter further comprises a multiplicity of end stops connected to said first bar, said second bar, said third bar, and said fourth bar . . . wherein each of said first bar, said second bar, said third bar, and said fourth bar is comprised of an orifice." [0004] The gas fired radiation emitter of U.S. Pat. No. 6,514,071 has met with a reasonable degree of commercial success. However, during prolonged high-temperature usage of such emitter, the screens often sag and ultimately split, thereby causing damage to the substrates being dried as well as adversely affecting the energy efficiency and operation of the emitter. Additionally, an improved screen design provides an improved screen replacement process reducing some of the cumbersome steps in the screen replacement process of U.S. Pat. No. 6,514,071. [0005] It is an object of this invention to provide an improved gas fired infrared radiation emitter that is more durable than the emitters of U.S. Pat. Nos. 6,007,329 and 6,514,071. [0006] It is an object of this invention to provide an improved gas fired infrared radiation emitter that is more energy efficient than the emitters of U.S. Pat. Nos. 6,007,329 and 6,514,071. [0007] It is an object of this invention to provide an improved gas fired infrared radiation emitter with a screen that has a longer screen life than the emitters of U.S. Pat. Nos. 6,007,329 and 6,514,071. [0008] It is an object of this invention to provide an improved gas fired infrared radiation emitter with a screen with increased flatness stability than the emitters of U.S. Pat. Nos. 6,007,329 and 6,514,071. [0009] It is an object of this invention to provide an improved gas fired infrared radiation emitter with a screen with reduced inward sagging toward the emitter surface than the emitters of U.S. Pat. Nos. 6,007,329 and 6,514,071. [0010] It is an object of this invention to provide an improved gas fired infrared radiation emitter with a screen with reduced sagging outward from the emitter surface than the emitters of U.S. Pat. Nos. 6,007,329 and 6,514,071. [0011] It is an object of this invention to provide an improved gas fired infrared radiation emitter with a simplified screen replacement process than the emitters of U.S. Pat. Nos. 6,007,329 and 6,514,071. The reduced time required in replacing the screen reduces the down-time of the drying equipment employing this apparatus. SUMMARY OF THE INVENTION [0012] In accordance with this invention, there is provided a gas fired infrared radiation emitter that contains a frame, a screen assembly attached to the frame, and a device for locking the screen assembly to the frame. The screen assembly contains a support rod structure and at least four attachment rings attached to a screen. Each of the attachment rings is contiguous with a portion of the screen and, at the point at which each such attachment ring is contiguous with the screen, forms a screen contact point. The distance between any one screen contact point and the closest adjacent screen contact point does not exceed 75 millimeters. BRIEF DESCRIPTION OF THE DRAWINGS [0013] The invention will be described by reference to the following drawings, in which like numerals refer to like elements, and in which: [0014] FIG. 1 depicts one preferred emitter of this invention; [0015] FIG. 2 depicts the frame and backbody of the emitter of FIG. 1 with the screen assembly removed; [0016] FIG. 3 depicts one preferred embodiment of a screen assembly of the emitter of FIG. 1; [0017] FIG. 4 is an exploded view of the emitter of FIG. 1 with the screen assembly separated from the backbody; [0018] FIGS. 5A and 5B are partial perspective views of a one embodiment of a vertically extending mounting bracket of the emitter of FIG. 1; [0019] FIG. 6 is a partial perspective view of one embodiment of a screen support of the emitter of FIG. 1; Continue reading... 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