Ramped cap unit for a main pool drain cover plate

专利名称：Ramped cap unit for a main pool drain cover

plate

发明人：Thomas E. Veloskey,Jeffrey A. Wichmann申请号：US09617153申请日：20000717公开号：US06397408B1公开日：20020604

专利附图：

摘要：A ramped cap unit is provided for installation into a swimming pool in a positioncovering a main pool drain equipped with an upstanding antivortex safety drain coverplate, wherein the ramped cap unit has a smoothly contoured shape to permit a pool

cleaner device to travel thereover without interrupting or obstructing cleaning operation.The cap unit comprises a generally inverted saucer defining a smoothly sloping andconvex or ramped upwardly presented surface having a diametric size and shape to fitover the safety drain cover plate. An array of ribs formed on the underside of the cap unitengage an outer periphery of the upstanding cover plate to retain the cap unit in positionthereon. A large plurality of vents are formed in the cap unit at spaced-apart locations topermit downward water flow therethrough substantially without disrupting theantivortex and safety functions of the underlying drain cover plate. The ramped uppersurface of the cap unit permits a pool cleaner device to climb directly over the cap unit inthe course of pool cleaner travel over submerged pool surfaces to collect and dislodgeparticulate debris settled thereon.

申请人：POLARIS POOL SYSTEMS, INC.

代理机构：Lowry & Kelley, LLP

代理人：Kelly Bauersfeld

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