WO2002018718A1 - Bath overflow preventor - Google Patents
Bath overflow preventor Download PDFInfo
- Publication number
- WO2002018718A1 WO2002018718A1 PCT/GB2001/003805 GB0103805W WO0218718A1 WO 2002018718 A1 WO2002018718 A1 WO 2002018718A1 GB 0103805 W GB0103805 W GB 0103805W WO 0218718 A1 WO0218718 A1 WO 0218718A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- water
- sealing means
- outflow
- rebate
- outer casing
- Prior art date
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
- E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
- E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
- E03C1/24—Overflow devices for basins or baths
- E03C1/242—Overflow devices for basins or baths automatically actuating supply or draining valves
Definitions
- This invention relates to a device for regulating water depth in domestic water receptacles, more particularly to a device for preventing water overflow in a bath whilst retaining a minimum level of water therein.
- the device is arranged such that the presence of water above the device
- the device at which point the device assumes the temporarily closed configuration; and further wherein the magnetic force also acts to return the device into the closed configuration whenever there is less than a second predetermined depth of water present above the device.
- Devices of the present invention are suitable for use in all domestic water receptacles including baths, hand basins and kitchen sinks having conventional outflow rebates. Devices of the present invention are particularly suitable for use in domestic baths and hand basins, most
- Devices of the present invention may be in the form of separate units to be used in pre-existing conventional domestic water receptacles or may be provided already installed in domestic water receptacles.
- the devices of the invention when provided already installed in domestic water receptacles may be removably or non-removably pre-installed.
- the devices of the present invention re preferably made from, or are coated with, materials that will resist corrosion and/or the build up of deposits from water thereon.
- the devices of the present invention are preferably of a size suitable to cover, or be fitted into, the outflow rebates of all domestic water receptacles.
- Preferred sizes range from 40 to 90 mm, for example 70 mm in diameter.
- Magnetic materials for use in devices of the present invention must have sufficient strength to maintain the device in the closed configuration until a first predetermined depth of water is present above the device, and also to return the device from the temporarily open configuration to the closed configuration once the water depth above the device falls below a
- the first and second predetermined depths may be the same or different.
- the preferred first predetermined depth is from 25 to 50mm, more preferably from 30 to 40mm, for example 33mm.
- the preferred second predetermined depth is from 20 to
- Magnetic material for use in devices of the present invention must also be resistant to demagnetization in normal use and over long time periods.
- Magnetic material having relatively high power to size ratios are preferred for use in devices of the present invention.
- Examples of preferred magnetic materials are Neodynium Iron Boron magnets and samarium Cobalt magnets.
- the present invention are preferably coated to prevent corrosion in use.
- Preferred magnetic strengths for magnetic materials for use in devices of the present invention are Neodynium Iron Boron magnets of KJ/m 3 225, MGO 28 or KJ/m 3 265, MGO 33.
- an outer casing suitable for forming a seal over, or in, the outflow rebate of a domestic water receptacle, having vents through which water is able to flow when the device is submerged in water, and b) a sealing means having: i) a closed position in which the vents in the outer casing are closed, so that
- sealing means is arranged so that when the device is placed under water, water pressure acts on the sealing means to urge it from the closed position into the temporarily open position; and further wherein a magnetic force acts to hold the sealing means in the closed position until the first predetermined depth of water is present above the device, at which point the sealing means moves to the temporarily open position;
- casing is made of a plastic or non ferrous material having good temperature resistance in the
- ABS plastic ranges encountered in domestic situations, for example ABS plastic.
- connection apron for improving the seal formed between the device and the surfaces of the domestic water receptacles in which they are used.
- the connection apron is preferably composed of a non-porous material, for example TPE 50A shore rubber; and may be integral with the outer casing or may be attached thereto. In the latter case the connection apron may be fixed by adhesive to the outer casing. More preferably the connection apron is held in place elastically, for example by being formed with an inner diameter sufficiently less than the outer diameter of the outer casing to allow attachment thereto but to then provide grip thereto, thus
- connection apron is preferably able to feather out to make a wide and stable seal with the domestic water receptacle surface and prevents water seeping therebetween.
- the connection apron preferably rises up to at least halfway up the side of the outer casing, so as to provide a good grip when the device is removed to allow emptying of the
- the sealing means physically abuts the outer casing to close the vents therein.
- both the outer casing and the sealing means may be incorporated magnetically attractable corrosion resistant material in the sealing means or vice versa or, optionally, both the outer casing and the sealing means may
- both the outer casing and the sealing means are circular so that the devices may be easily assembled.
- the magnetic force is produced by incorporating a magnet in the outer casing and by the
- sealing means comprising a magnetically attractable corrosion resistant material.
- the sealing means preferably comprises a metallic plate, more preferably a stainless steel, or zinc coated steel, plate.
- the steel plate has affixed thereto a non-porous, non-metallic layer forming the contact layer between the sealing means and the outer casing.
- the two layers of the sealing means are preferably affixed by adhesive so that they will not separate or move relative to each other over the lifetime of the product.
- the non-porous layer may be made from sponge, latex, foam, neoprene, nitrile pvc or silicone rubber, or any other material suitable to prevent water escaping between the outer casing and the sealing means in its first position.
- the vents in the outer casing are arranged to allow a relatively rapid flow of water therethrough when the
- sealing means is in the second position.
- at least 500 mm 2 (more preferably at least 540 mm 2 ) of the outer casing comprises vents.
- the sealing means may comprise vents which are out of register with the vents of the outer casing, so that, when the sealing means abuts the outer casing, the vents in the outer casing are closed by the non-vent areas of the sealing means and the vents of the sealing means are closed by the non-vent area of the outer casing.
- the total surface areas of the vent in the outer casing and the vents in the sealing means are selected so that
- the vents in the outer casing and the vents in the sealing means are arranged so that rotation of the sealing means when it is in the first position will not lead to unblocking of the vents in the outer casing.
- the sealing means and the outer casing are arranged so that, when the sealing means is in the second position, an open chamber is formed into which water flows before passing out of the device and into the outflow rebate of the domestic water receptacle in which the device is located. Water may flow out from this chamber through vents in the sealing means (if present) or additionally or alternatively by flowing around the sealing means.
- the chamber formed between the outer casing and the sealing means in the second position will have a volume of from 300 to 750mm 3 , for example 450mm 3 .
- distance between the outer casing and the sealing means when the sealing means is in the second position is from 0.3 to 2.5mm, more preferably from 1 to 1.5mm, for example 1.2mm.
- the outer casing has projections arranged on the inner face thereof to improve the seal between the outer casing and the sealing means in the first position.
- Preferred projections are arranged on the inner face thereof to improve the seal between the outer casing and the sealing means in the first position.
- the sealing means are in the form of ridges having a height of from 0.5 to 1mm.
- the sealing means has an upper layer of flexible non-porous material the projections will bite into this material to improve the seal and prevent leakage of water in the first position.
- the second part being in the form of a sphere and comprising a magnet or a metallic component complementary to the magnet or metallic component in the first part, such that magnetic attraction exists between the first and second parts; the device being arrangable such that the second part will prevent water flowing down the outflow rebate until a first predetermined depth of water is present above the device, at which point the second part will be forced away from the first part thereby allowing water to flow down the outflow rebate until the depth of water above the device falls to a second predetermined depth; at which point the second part will return to the position in which it prevents further water flowing down the outflow rebate; and wherein the first part may be manually displaced such that its distance from the
- the second part and the second part contain magnets.
- a cage to prevent the second part being displaced more than a predetermined distance down the outflow rebate.
- the first part is not completely removable from the outflow rebate following the manual displacement carried out in order to allow the free flow of water through the device.
- the first part is preferably made of a plastic or non ferrous material having good temperature resistence in the ranges encountered in domestic situation, for example ABS plastic.
- the second part is also preferably made of a similar material as is the cage and/or the unit containing the first and
- the devices of the second embodiment of the present invention are provided permanently fixed into a domestic water receptacle when the receptacle is purchased; however they may also be provided for fitment to pre-existing domestic water receptacles.
- Figure 1 is view from above of a first embodiment of a device of the invention
- Figure 2 is view from below of the outer casing of the device shown in figure 1;
- Figure 3 is view from above of plate for use in forming a sealing means for use in the device shown in figure 1;
- Figure 4 is a view from the side of a sealing means for use in the device shown in
- FIG. 5 is a sectional view of the device shown in figure 1, with the sealing means in the closed position;
- Figure 6 is a sectional view of the device shown in figure 1, with the sealing means in the temporarily open position,
- Figure 7 is a sectional view of a device of the first embodiment of the present
- Figure 8 is a sectional view of a device of the second embodiment of the present invention pre-installed in a domestic bath, the device being in the closed configuration;
- Figure 9 is a sectional view of the device shown in figure 8, the device being in the temporarily open position.
- Figure 10 is a sectional view of the device shown in figure 8 with the first part of the device in the manually displaced position.
- the device 1 of the first embodiment of the present invention has
- an outer casing 2 having a diameter of 68mm and composed of ABS plastic.
- the outer casing has vents 3 therein, through which water may flow if the vents are not obstructed.
- a button magnet 4 is present in a recess 5 in the outer casing.
- the magnet is a Neodynium Iron Boron magnet coated with nickel and having a magnet strength of KJ/m 3 225,
- the outer casing 2 has projections 6 on its inner face.
- the projections are spike shaped in section and extend by 1mm from the casing.
- Figures 3 shows a plate 7 for use in the device shown in figure 1.
- the plate is
- the plate has vents 8 therein.
- the vents 8 in the plate 7 are arranged so that when the plate is fixed inside the outer casing 2 and in contact therewith, the vents 3 in the outer casing and the vents 8 in the plate do not coincide, forming a seal so that water may not flow through the vents 3 in the outer casing.
- Figure 4 shows a sealing means 9 for use in the device shown in figure 1.
- the sealing means 9 comprises a plate 7 as shown in figure 3 and an upper plastic layer 10 comprising a
- the plate 9 and the upper layer 10 are joined together by solvent based acrylic adhesive.
- the upper layer 10 has vents (not shown) corresponding to the vents 8 in the metallic plate 7.
- Figure 5 is a sectional view of the device shown in figure 1 along section A- A.
- the sealing means 9 is in the closed position, ie it is pressed against the outer casing of the device such that the vents 3 in the outer casing are sealed by the sealing means 9.
- the vents 8 in the sealing means 9 are sealed from access by water by the outer casing 2.
- vents 3 in the outer casing 2 and the vents 8 in the sealing means 9 are of such a size that water will flow out of the bath at a rate greater than it can flow in from any conventional tap system, so that the water level in the bath will begin to fall as soon as the sealing means 9 to position 2.
- FIG. 7 A device of the first embodiment of the present invention pre-installed in a domestic bath is shown in figure 7.
- the outer casing 2 of the device is shown in figure 7.
- a device 20 of the second embodiment of the present invention is
- the device comprises an outer container permanently fixed to a connecting sleeve 22 composed of chrome plated brass.
- the connecting sleeve 22 has been screwed into the outflow rebate 23 of a domestic bath so that it fits flush against the base 24 of the bath.
- the outer container has a ledge 27 running around its entire circumference. Above this ledge 27 the outer container 21 has continuous walls. Below the ledge 27 the walls of the outer container 27 form a cage 33 due to the presence of vents 32 therein.
- the device 20 further comprises a first part 25 that fits within the outer container and
- the first part 25 comprises three legs 26 that rest upon the ledge 27 that runs around the entire circumference of the outer container 21.
- the first part 25 also comprises a body portion 28 to which the legs 26 are attached and which may be grasped in order to raise the first part 25.
- the body 28 of the first part 25 contains a magnet 29.
- the magnet 29 is a Neodynium Iron Boron magnet having a magnetic strength of KJ/m 3 225, MGO 28.
- the first part is composed of ABS plastic
- the first part 25 is constructed so as to allow water to flow at a high rate between it and the outer container 21 and thereafter (in the absence of any other obstruction) down the outflow rebate 23.
- the device 20 also comprises a second part 30 which, in the closed position, rests against the underside of the ledge 27 forming a seal within the outer container 21 and therefore
- the second part is composed of ABS plastic and also contains a second magnet 31.
- This second magnet is a Neodynium Iron Boron magnet having a magnetic strength of KJ/m 3 225, MGO 28. The magnetic attraction between the first magnet 29 and the second magnet 31 holds the second part in the position shown in
- the device 20 is shown in the temporarily open position.
- the weight of water has forced the second part 30 away from the first part 25 so that it rests upon the bottom of the cage 33 formed within the part of the outer container 21
- the first part 25 may be raised within the outer container 21
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Sink And Installation For Waste Water (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2001282331A AU2001282331A1 (en) | 2000-09-01 | 2001-08-23 | Bath overflow preventor |
EP01960944A EP1341972A1 (en) | 2000-09-01 | 2001-08-23 | Bath overflow preventor |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0021397A GB0021397D0 (en) | 2000-09-01 | 2000-09-01 | Overflow inhibiting automatic draining plug for baths or sinks |
GB0021397.5 | 2000-09-01 | ||
GB0101329A GB0101329D0 (en) | 2001-01-18 | 2001-01-18 | Bath overflow preventor |
GB0101329.1 | 2001-01-18 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2002018718A1 true WO2002018718A1 (en) | 2002-03-07 |
WO2002018718A8 WO2002018718A8 (en) | 2003-08-07 |
Family
ID=26244937
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2001/003805 WO2002018718A1 (en) | 2000-09-01 | 2001-08-23 | Bath overflow preventor |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1341972A1 (en) |
AU (1) | AU2001282331A1 (en) |
WO (1) | WO2002018718A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10318382B4 (en) * | 2002-04-24 | 2008-01-24 | Volker Listringhaus | Drain for a pool |
WO2016006989A1 (en) * | 2013-07-05 | 2016-01-14 | Mario Marquez Miranda | Automatic drain valve |
IT201800020326A1 (en) * | 2018-12-20 | 2020-06-20 | Ravani S R L | Sanitary drain |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2600355A1 (en) * | 1976-01-07 | 1977-07-21 | Hartmut Katta | Domestic bath water level regulator - has sealed sprung adjuster ring in threaded housing |
DE2825978A1 (en) * | 1978-06-14 | 1980-02-21 | Georg Lang | Wash-basin or bath outflow closure - has seal held by force dependent on pressure in overflow prevention system |
DE2950611A1 (en) * | 1979-12-15 | 1981-06-19 | Gutjahr, Gert, Dipl.-Phys. Dr., 6800 Mannheim | Bathroom or basin water outlet closure fitting - has magnets holding overflow plug as part of closing plug inside run=off |
-
2001
- 2001-08-23 AU AU2001282331A patent/AU2001282331A1/en not_active Abandoned
- 2001-08-23 EP EP01960944A patent/EP1341972A1/en not_active Withdrawn
- 2001-08-23 WO PCT/GB2001/003805 patent/WO2002018718A1/en not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2600355A1 (en) * | 1976-01-07 | 1977-07-21 | Hartmut Katta | Domestic bath water level regulator - has sealed sprung adjuster ring in threaded housing |
DE2825978A1 (en) * | 1978-06-14 | 1980-02-21 | Georg Lang | Wash-basin or bath outflow closure - has seal held by force dependent on pressure in overflow prevention system |
DE2950611A1 (en) * | 1979-12-15 | 1981-06-19 | Gutjahr, Gert, Dipl.-Phys. Dr., 6800 Mannheim | Bathroom or basin water outlet closure fitting - has magnets holding overflow plug as part of closing plug inside run=off |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10318382B4 (en) * | 2002-04-24 | 2008-01-24 | Volker Listringhaus | Drain for a pool |
WO2016006989A1 (en) * | 2013-07-05 | 2016-01-14 | Mario Marquez Miranda | Automatic drain valve |
IT201800020326A1 (en) * | 2018-12-20 | 2020-06-20 | Ravani S R L | Sanitary drain |
WO2020128669A1 (en) * | 2018-12-20 | 2020-06-25 | Ravani Sifoni S.R.L. | Drain for sanitary fixtures |
US11959263B2 (en) | 2018-12-20 | 2024-04-16 | Ravani S.R.L. | Drain for sanitary fixtures |
Also Published As
Publication number | Publication date |
---|---|
WO2002018718A8 (en) | 2003-08-07 |
AU2001282331A1 (en) | 2002-03-13 |
EP1341972A1 (en) | 2003-09-10 |
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