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Pool filter bag with exaggerated expansion portions for improved flow and debris collectionPool filter bag with exaggerated expansion portions for improved flow and debris collection description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20070181477, Pool filter bag with exaggerated expansion portions for improved flow and debris collection. Brief Patent Description - Full Patent Description - Patent Application Claims
CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application claims the benefit of U.S. Provisional Application 60/765,822 filed Feb. 7, 2006 under 35 U.S.C. 119(e). The drawings and disclosure of U.S. Application 60/765,822 are hereby incorporated by reference as though set forth in full. BACKGROUND [0002] 1. Field of the Invention [0003] The present invention generally relates to improvements in debris collection bags for use with pool cleaning devices and more particularly relates to an improved collection bag having lateral expansion portions. [0004] 2. Related Art [0005] Residential and commercial swimming pools and spas include water filtration systems designed for removing dirt and debris from the pool water. Typically, filtration systems direct pool water through a cleaner, which holds a porous filter bag for trapping any sediment and debris, while discharging the filtered water. [0006] During a pool cleaning process, the pool water and debris flow from the cleaner outlet to a pool filter bag. In a typical bag, the debris often gets trapped at the narrow opening of bag obstructing further flow of the pool water and debris, and thus decreasing the bag capacity for the collection of the debris. [0007] Therefore, there remains a need in the art for an efficient pool vacuum filter bag that avoids accumulation of debris in undesired places and overcomes the significant problems found in the conventional systems described above. SUMMARY [0008] The present invention provides a pool filter bag for use with pool cleaners, which are commonly used to clean the bottom of swimming pools, spas and the like, and to remove debris therefrom. The invention provides a pool filter bag having expanded lateral portions, which substantially improves the debris filtering and collection performances. [0009] The inventive pool filter bag is adapted for use with a pool cleaner having a water discharge mast. The filter bag is constructed of a water-permeable bag material to an enclosure with a water inlet opening adaptable to be fitted to the mast or outlet of the pool cleaner for receiving water passing through it. The filter bag has a divider seam, which interconnects portions of the bag material extending from the water inlet opening to the interior the enclosure to provide for a water flow chamber and a debris collection chamber. The debris collection chamber has expanded lateral sides for the increased volumetric collection of debris passing from the water flow chamber. At the same time, the expansion sections also improve the flow of the water through the bag by allowing debris settlement at the debris collection chamber thereby reducing flow restriction through the water flow path. [0010] Other features and advantages will become more readily apparent to those of ordinary skill in the art after reviewing the following detailed description and accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS [0011] The details of the present invention, both as to its structure and operation, may be gleaned in part by study of the accompanying drawings, in which like reference numerals refer to like parts, and in which: [0012] FIG. 1 is a perspective view of a partially expanded pool filter bag; [0013] FIG. 2 is a side view of the pool filter bag; [0014] FIG. 3 is a front view of the partially expanded pool filter bag; [0015] FIG. 4 is a back view of the partially expanded pool filter bag; [0016] FIG. 5 is a plan view of a cutting template for the fabric for the pool filter bag; [0017] FIG. 6 is a side view of an alternative embodiment of the pool filter bag; [0018] FIG. 7 is a plan view of a cutting template for the fabric for the alternative embodiment of the pool filter bag; [0019] FIG. 8 is a plan view of a clamp for securing the pool filter bag onto a pool cleaner mast; and [0020] FIG. 9 is an alternative clamp for securing the pool filter bag onto a pool cleaner mast. 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