A screen for intake of fluid. The screen includes parallel and spaced rods, filtration material, a fitting, and structural members. The rods may be distributed in a cylindrical configuration. The filtration material, in some embodiments spirally wrapped wire, is disposed around the rods to define an interior volume. The fitting is disposed at an end of the rods and adjacent to the filtration material. Each structural member, which in some embodiments are elongated bars, is interposed between adjacent rods. The structural members are welded to the adjacent rods, and the adjacent rods and the structural members are welded to the fitting to increase the effective weld area, the tensile strength of the connection, and potentially the overall strength of the screen. The screen may be used for a variety of fluids and installations, and is particularly suited to use in water wells.

A screen for intake of fluid. The screen includes parallel and spaced rods, filtration material, a fitting, and structural members. The rods may be distributed in a cylindrical configuration. The filtration material, in some embodiments spirally wrapped wire, is disposed around the rods to define an interior volume. The fitting is disposed at an end of the rods and adjacent to the filtration material. Each structural member, which in some embodiments are elongated bars, is interposed between adjacent rods. The structural members are welded to the adjacent rods, and the adjacent rods and the structural members are welded to the fitting to increase the effective weld area, the tensile strength of the connection, and potentially the overall strength of the screen. The screen may be used for a variety of fluids and installations, and is particularly suited to use in water wells.

An apparatus (10) for handling drill water comprises a funnel (12) and a spillway (16) which act in concert to receive and then separate a slurry mixture into constituent drill cuttings and spent rinse water. The funnel (12) collects the falling slurry mixture, which is channelled via conduit (56) into a spillway (16). The spillway (16) is fitted with a dewatering grate (80) onto which the slurry mixture from the funnel (12) is channelled. The flow of slurry mixture is moderated by a baffle (78) which both catches and discharges slurry mixture delivered by the conduit (56). The slurry mixture is discharged over the dewatering grate (80), which drains the spend rinse water into a section of the spillway (16), and discharges the drill cuttings away from the grate (80).

An apparatus (10) for handling drill water comprises a funnel (12) and a spillway (16) which act in concert to receive and then separate a slurry mixture into constituent drill cuttings and spent rinse water. The funnel (12) collects the falling slurry mixture, which is channelled via conduit (56) into a spillway (16). The spillway (16) is fitted with a dewatering grate (80) onto which the slurry mixture from the funnel (12) is channelled. The flow of slurry mixture is moderated by a baffle (78) which both catches and discharges slurry mixture delivered by the conduit (56). The slurry mixture is discharged over the dewatering grate (80), which drains the spend rinse water into a section of the spillway (16), and discharges the drill cuttings away from the grate (80).

The invention relates to a method for adapting a filter medium to predefinable parameters, such as electrostatic charge, flow-rate behaviour, dynamic pressure behaviour or differential pressure behaviour, fraction filtration efficiency and preservation of a constant quantity and quality of fluid additives. Said method is characterised in that at least one of the aforementioned parameters is adapted by the targeted influencing of the surface energy of the filter medium (18).

The invention relates to a method for adapting a filter medium to predefinable parameters, such as electrostatic charge, flow-rate behaviour, dynamic pressure behaviour or differential pressure behaviour, fraction filtration efficiency and preservation of a constant quantity and quality of fluid additives. Said method is characterised in that at least one of the aforementioned parameters is adapted by the targeted influencing of the surface energy of the filter medium (18).

A debris trap for a floor drain includes a rim defining an outer diameter, an inner diameter, and a radial center. A plurality of prongs are integrally formed with the rim and spaced along at least part of the inner diameter. At least some of the prongs are arranged to extend over an inlet of a drain body and have a proximal portion connected to the rim and extending radially inward from the rim, and a free distal portion that is only upwardly curved from the proximal portion toward the radial center of the rim.

A debris trap for a floor drain includes a rim defining an outer diameter, an inner diameter, and a radial center. A plurality of prongs are integrally formed with the rim and spaced along at least part of the inner diameter. At least some of the prongs are arranged to extend over an inlet of a drain body and have a proximal portion connected to the rim and extending radially inward from the rim, and a free distal portion that is only upwardly curved from the proximal portion toward the radial center of the rim.

A bowl comprising an open top (2), an outer surface (3) and a base (4), in which a plurality of first drainage apertures (5) are provided in said outer surface, in which said base is provided with a resilient bi-stable diaphragm member (6) which is manually switchable between a first dome configuration in which it extends away from said outer surface, and a second dome configuration in which it is everted in relation to said first configuration and overlies said outer surface to close said plurality of first drainage apertures.

A bowl comprising an open top (2), an outer surface (3) and a base (4), in which a plurality of first drainage apertures (5) are provided in said outer surface, in which said base is provided with a resilient bi-stable diaphragm member (6) which is manually switchable between a first dome configuration in which it extends away from said outer surface, and a second dome configuration in which it is everted in relation to said first configuration and overlies said outer surface to close said plurality of first drainage apertures.