초록 ▼

A ramped cap unit is provided for installation into a swimming pool in a position covering a main pool drain equipped with an upstanding antivortex safety drain cover plate, wherein the ramped cap unit has a smoothly contoured shape to permit a pool cleaner device to travel thereover without interru

A ramped cap unit is provided for installation into a swimming pool in a position covering a main pool drain equipped with an upstanding antivortex safety drain cover plate, 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 and convex or ramped upwardly presented surface having a diametric size and shape to fit over the safety drain cover plate. An array of ribs formed on the underside of the cap unit engage an outer periphery of the upstanding cover plate to retain the cap unit in position thereon. A large plurality of vents are formed in the cap unit at spaced-apart locations to permit downward water flow therethrough substantially without disrupting the antivortex and safety functions of the underlying drain cover plate. The ramped upper surface of the cap unit permits a pool cleaner device to climb directly over the cap unit in the course of pool cleaner travel over submerged pool surfaces to collect and dislodge particulate debris settled thereon.

대표청구항 ▼

1. A ramped cap unit for use in a swimming pool to fit over a safety cover plate mounted over a pool drain formed in a submerged pool surface, wherein the safety cover plate upstands from the submerged pool surface, said ramped cap unit comprising:a generally inverted saucer having a central disk wi

1. A ramped cap unit for use in a swimming pool to fit over a safety cover plate mounted over a pool drain formed in a submerged pool surface, wherein the safety cover plate upstands from the submerged pool surface, said ramped cap unit comprising:a generally inverted saucer having a central disk with a size and shape to fit over the safety cover plate, said central disk being assembled with a generally annular outer ring extending radially outwardly and downwardly from said central disk to define an outer perimeter adapted to rest substantially flush on the submerged pool surface when said central disk is fitted over the safety cover plate, said outer ring comprising a plurality of part-circle ring segments assembled together; said saucer being shaped to define a plenum chamber at an underside thereof in flow communication with the safety cover plate; said saucer having a plurality of vents formed therein to permit downward water flow from above said saucer to said plenum chamber; said saucer having a smoothly sloping upwardly presented surface to permit substantially uninterrupted travel of a pool cleaner thereover.