EP0531316A4 - Hydrostatic drain plug - Google Patents
Hydrostatic drain plugInfo
- Publication number
- EP0531316A4 EP0531316A4 EP19910909000 EP91909000A EP0531316A4 EP 0531316 A4 EP0531316 A4 EP 0531316A4 EP 19910909000 EP19910909000 EP 19910909000 EP 91909000 A EP91909000 A EP 91909000A EP 0531316 A4 EP0531316 A4 EP 0531316A4
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve member
- closed position
- sealing
- valve
- biassing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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
- E03C1/22—Outlet devices mounted in basins, baths, or sinks
- E03C1/23—Outlet devices mounted in basins, baths, or sinks with mechanical closure mechanisms
- E03C1/2306—Outlet devices mounted in basins, baths, or sinks with mechanical closure mechanisms the plug being operated by hand contact
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
- A47K1/00—Wash-stands; Appurtenances therefor
- A47K1/14—Stoppers for wash-basins, baths, sinks, or the like
-
- 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
- E03C1/22—Outlet devices mounted in basins, baths, or sinks
- E03C1/23—Outlet devices mounted in basins, baths, or sinks with mechanical closure mechanisms
-
- 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
- E03C1/22—Outlet devices mounted in basins, baths, or sinks
- E03C1/23—Outlet devices mounted in basins, baths, or sinks with mechanical closure mechanisms
- E03C1/232—Outlet devices mounted in basins, baths, or sinks with mechanical closure mechanisms combined with overflow devices
-
- 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
-
- 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
- E03C1/22—Outlet devices mounted in basins, baths, or sinks
- E03C1/23—Outlet devices mounted in basins, baths, or sinks with mechanical closure mechanisms
- E03C2001/2317—Outlet devices mounted in basins, baths, or sinks with mechanical closure mechanisms transmission of actuation force involves a spring
Definitions
- HYDROSTATIC DRAIN PLUG This invention is concerned with improved drain or waste plugs for liquid containing vessels.
- drain plugs for use in association with waste outlets of hand basins, sinks, baths, spa baths, floor drains and the like in domestic and commercial buildings, laboratories and the like.
- drain plug in general use comprise a rigid or flexible frusto- ⁇ onical plug adapted to engage in a frusto-conical neck of complementary shape in the neck of a waste outlet or alternatively a plug with a flexible flange adapted to engage an annular rim of a waste outlet.
- plugs of the above type are not captive and thus are easily lost, misplaced or, in the case of hotels and the like, stolen thereby necessitating costly frequent replacements.
- a drain plug captive by attachment of a cord or chain this is not always convenient and can be unsightly and difficult to clean.
- Patent Application No. 12445/52 concerns a waste outlet having a rotatable plate with apertures selectively alignable with apertures in the body of the outlet.
- the plate is rotatable to open or close the waste outlet.
- This device is difficult and inconvenient to operate, suffers from poor liquid sealing capacity and an exposed spring mechanism provides a lint trap leading ultimately to poor drainage and blockage.
- Patent Application No. 36335/89 describes a device similar to that of Patent Application No.
- S UBST ⁇ TUTE SHHCT 12445/52 but comprises a removable plug assembly which is easily lost or stolen.
- Australian Patent No. 213319 describes a captive plug/waste outlet combination wherein sealing engagement of the plug is achieved by rotating the plug on a threaded shaft to raise or lower the plug relative to the mouth of the outlet. This device suffers from poor drainage, entrapment of lint and, in the open position, protrudes above the surface of the outlet -nereby causing the potential for injury in a bath or the like.
- Patent Application No. PCT/GB85/00345 describes a waste outlet comprising a cover plate attached to one end of a shaft and a plug attached at the other end of the shaft.
- the plug is urged into sealing engagement with an outlet aperture against a spring biassing means by pushing downwardly on the cover plate and rotating through 90° by means of a bayonet coupling.
- This particular device is considered to be particularly prone to blockages due to entrapment of lint in both upper and lower spring mechanisms and such blockages would require a relatively difficult dismantling to clear the blockage.
- Each of the above types of plug/outlet combination are concerned with a plug which is subjected to hydrostatic pressure which enhances the liquid seal and thus increases the difficulty of disengaging the plug under a head of water.
- a waste plug/outlet apparatus for liquid retaining vessels, said apparatus including:- a hollow body portion having an inlet port and an outlet port, said outlet port being adapted for connection to a liquid conduit; a sealing means associated with said inlet port; a valve member movable between an open position spaced from said sealing means and a closed
- valve member sealingly engages against said sealing member; and, resilient biassing means to urge said valve member towards a closed position.
- said apparatus includes locking means to selectively lock said valve member in an open position.
- said apparatus may additionally or alternatively include locking means to selectively lock said valve member in a closed position.
- the sealing means may comprise any suitable means which, in association with said valve member, forms a liquid tight seal to prevent ingress of liquid into said inlet port.
- the sealing means is releasably attachable to said body portion to enable insertion to or withdrawal from the interior of said body portion of said valve member.
- saiu s li means comprises a sealing surface which diverges inwardly of said body portion.
- said sealing surface comprises a frusto-conical surface adapted to engage a complementary surface on said valve member.
- said biassing means comprises a compression spring operative between said movable valve member and valve support member associated with said body portion.
- said biassing means may be adjustable to selectively vary the biassing force which urges said valve member towards a closed position.
- a cover means is associated with said biassing means to prevent, in use, contact between said biassing means and foreign matter entering said inlet port.
- the valve means suitably comprises a rotatable member having a circular head portion with a frusto- conical sealing surface and a central valve shaft rotatably mounted in said valve support member.
- said locking means comprises one or more projections extending perpendicularly to said valve shaft.
- the locking means suitably includes one or more slotted recesses associated with said valve support member to receive a respective projection to selectively retain said valve member in an open or closed position.
- the locking means may alternatively or additionally comprise one or more ramped surfaces associated with said valve support member to engage said one or more projections to guide said valve member into a locked open and/or a locked closed position upon rotation of said valve member.
- grip means is provided on a normally upper surface of said valve member to facilitate rotation thereof.
- valve member is selectively
- biassing means may comprise a compressible fluid or an incompressible fluid associated with a pressure accumulation means.
- FIG 1 is a cross sectional view of a drain plug/waste outlet apparatus in the closed position
- FIG 2 shows the apparatus of FIG 1 in an open position
- FIG 3 shows the apparatus of FIGS 1 and 2 in an exploded perspective view
- FIG 4 shows a cross sectional view of an alternative embodiment of the invention
- FIG 5 shows a cross sectional view of an actuating means for the embodiment of FIG 4.
- the drain plug/waste outlet comprises a body 1 having an externally threaded portion 2 to facilitate connection to a waste conduit (not shown) .
- a waste conduit (not shown)
- an annular sealing member 3 Removably located in the upper opening or mouth of body 1 is an annular sealing member 3 which engages an internally threaded portion 4 in the mouth of
- S UBSTITUTE SHEET body 1 About the inner periphery of sealing member 3 is a frusto-conical sealing face 5 which diverges inwardly of body 1.
- valve support member 7 Located within the hollow interior of body 1 is a valve member 6 slidably located in a valve support member 7.
- Valve support member 7 comprises a central portion 8 with an aperture 9 in which the valve member 6 is able to slide in a reciprocatory fashion.
- Extending radially from central portion 8 are spaced legs 10 which locate in recesses 11 formed on the inner wall of body
- Valve member 6 comprises a circular cap 12 with a recess 13 in its upper surface. Within recess 13 is a finger grip portion 14 to facilitate rotation of valve member 6. About the periphery of cap 12 is located resilient seal 15 having a frusto-conical sealing surface 16 complementary to sealing surface 5 on sealing member 3. Depending from the lower side of cap 12 is a cylindrical shaft 17 which slidably locates in aperture 9 in valve support member 7. Also depending from the lower side of cap 12 is a circular wall 18 which in conjunction with hollow cylindrical shroud 19, forms a substantially sealed enclosure 20 housing a compression coil spring 21. Shroud 19 had a central aperture 22 through which shaft 17 is able to slide. A cylindrical pin 23 is inserted through an aperture in shaft 17 via opposed apertures 24 in shroud 19.
- FIG 1 shows the drain plug/waste outlet apparatus in a closed position whilst FIG 2 shows the apparatus in an open position.
- FIGS 1-3 The drain plug/waste outlet illustrated in FIGS 1-3 is readily fitted to sinks, hand basins, baths, showers, spa baths and like in a conventional manner. As shown in FIG 3, cap 12 is rotable between an "open” position through an intermediate “fill” position to a “closed” position.
- pin 23 rests upon the upper surface 26 of boss 25 and urges the resilient sea.. 15 into sealing engagement w th s l face 5 of sealing member 3 to prevent egress of water or the like through the waste outlet body 1.
- S UBSTITUTE SHEET overflow prevention means for liquid container such as laundry tubs, hand basins, baths etc.
- liquid container such as laundry tubs, hand basins, baths etc.
- the pressure of the head of liquid above valve member 6 begins to exceed the restoring force of spring 21 and thus allows excess fluid to escape via the hollow interior of body 1.
- the apparatus according to the invention may be provided with a plurality of "standard” springs 21, each having a restoring force equivalent to a predetermined liquid depth in, say, a hand basin, a laundry tub and a bath.
- spring compression means (not shown) in the form of removable spacer or a threaded collar on shaft 17 may be provided to selectively vary the head of liquid able to be supported by the apparatus in the "fill" position.
- cap 12 is pushed downwardly against the restoring force of spring 21 and then rotated to
- S UBSTITUTE SHEET permits a more rapid evacuation of liquid due to lack of restrictions in the flow path and also due to the ready formation of a "whirlpool" effect at the mouth of the outlet. Furthermore, the shrouding of internal components which otherwise entrap lint, hair and other foreign matter reduces costly maintenance due to blockages and wear on movable components. In the event that maintenance is required the entire valve assembly is accessible and removable by removing sealing member 3 without the necessity for disconnecting the waste conduit attached to the apparatus.
- FIG 4 illustrates further embodiments of the invention.
- an optional surge float 30 may be attached to the lower end of the shaft 31 attached to valve member 32.
- the surge float 30 urges valve member 32 into sealing engagement with sealing member 33 as the water level in the waste conduit 34 rises.
- the volume of float 30 may be chosen to operate against a predetermined head of water to control ingress of liquid and to prevent further flooding of a floor surface.
- FIGS 4 and 5 also illustrate yet another embodiment of the invention in the form of a remote opening or closing device.
- the valve support In FIG 4 the valve support
- S UBSTITUTE SHEET member 34 has an integrally formed boss 35 in the form of a cylindrical body which ⁇ lidingly supports the shaft
- Resilient "0" ring seals 37, 38 form fluid tight seals respectively between the shaft 36 and inner wall of boss 35 on the one hand and the outer wall of boss 35 and shroud 39 depending from valve member 32 on the other hand.
- a fluid conduit 40 which is in fluid communication with a conduit 41 via an aperture 42 in the lower portion of body 43.
- valve member 32 When a source of pressurised fluid is supplied via conduit 41 valve member 32 is driven upwardly to seal against sealing member 33.
- a compressible fluid such as air
- the valve member 32 may be driven into sealing engagement with sealing member with a predetermined force which is able to be overcome by an excess head of liquid above valve 32.
- an incompressible fluid such as water, oil etc may be employed in conjunction with a diaphragm pressure accumulator or the like to provide a similar sealing force of predetermined magnitude.
- FIG 5 shows a convenient form of remote control of the apparatus of FIG 4.
- the pressurising device comprises a piston 40 and a cylinder 41 with a non return valve 42 which may be fitted behind a wall cladding material 43 otherwise recessed into a wall structure.
- Piston 40 comprises a large pushing cap 44 and a return spring 45.
- S UBSTITUTE SHEET 41 communicates with a chamber 46 via non return valve
- conduit 41 is adapted to connect to conduit 41.
- a needle and jet assembly 47 Connected to chamber 46 is a needle and jet assembly 47 to selectively allow pressurised air to be bled from chamber 46 and conduit 41.
- the needle and jet assembly 47 is biassed into sealing engagement by a spring 48 the tension of which spring may be adjusted by rotation of the shaft 49 of the needle and jet assembly.
- the drain plug/waste outlet apparatus of FIG 4 may be closed by a single push of cap 44 to close the valve member 32 with a predetermined hydrostatic relief pressure determined by the biassing force of spring 48 in the needle/jet assembly 47.
- Valve member 32 may be opened simply by withdrawing shaft 49 against the biassing force of spring 48.
- the float 30 shown in FIG 4 may be replaced with a solid mass.
- an aperture grate may be incorporated in the sealing member 33 if required.
- the various embodiments of the apparatus according to the present invention are suitable for all domestic and commercial residential properties as well as nursing homes, hospitals and the like.
- the apparatus also has application in public facilities, floor drainage and industrial applications.
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Mechanical Engineering (AREA)
- Closures For Containers (AREA)
- Sink And Installation For Waste Water (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU9974/90 | 1990-05-04 | ||
AUPJ997490 | 1990-05-04 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0531316A1 EP0531316A1 (en) | 1993-03-17 |
EP0531316A4 true EP0531316A4 (en) | 1993-05-26 |
Family
ID=3774640
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19910909000 Withdrawn EP0531316A4 (en) | 1990-05-04 | 1991-05-02 | Hydrostatic drain plug |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0531316A4 (en) |
JP (1) | JPH05507008A (en) |
WO (1) | WO1991016847A1 (en) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2710669B1 (en) * | 1993-05-03 | 1997-05-23 | Dominique Pournin | Device for emptying sinks. |
DE9421018U1 (en) * | 1994-01-04 | 1995-05-11 | Blaney, Trevor, London | Overflow protection |
AU700030B2 (en) * | 1994-09-14 | 1998-12-17 | Smartplug Pty Ltd | Self-emptying plug |
EP0735206A1 (en) * | 1995-03-29 | 1996-10-02 | FISC ITALIANA S.r.l. | Closure device, particularly for drains |
WO1997009917A1 (en) * | 1995-09-14 | 1997-03-20 | Smartplug Pty. Ltd. | Self-emptying plug |
US5749561A (en) * | 1995-10-31 | 1998-05-12 | Wes Wastes Limited | Plug assembly |
US6023795A (en) * | 1998-04-09 | 2000-02-15 | Evac International Oy | Washbasin drain assembly |
GB2338184B (en) * | 1998-11-24 | 2000-04-19 | Mark Charles Forbes | Plug for the outlet of a liquid container |
GB9919456D0 (en) * | 1999-08-18 | 1999-10-20 | Rose Simon L | Auxiliary water evacuation plug |
NL1014118C2 (en) * | 2000-01-19 | 2001-07-20 | Wild Design Holding Gmbh | Drain well. |
AU2001264093A1 (en) * | 2000-06-29 | 2002-01-14 | Bulk Hardware Limited | Overflow preventer |
US6363544B1 (en) * | 2001-03-20 | 2002-04-02 | Ronald J. Ryan | Spring biased drain closure |
ITMI20020356A1 (en) * | 2002-02-21 | 2003-08-21 | Silfra Spa | DEVICE FOR OPENING AND CLOSING A SANITARY CAP |
ITMI20030837A1 (en) * | 2003-04-23 | 2004-10-24 | American Standard Italia S R L | AUTOMATIC SAFETY DRAIN CAP. |
ITMI20041428A1 (en) * | 2004-07-15 | 2004-10-15 | Silfra Spa | DISCHARGE DEVICE ESPECIALLY FOR SANITARY EQUIPMENT WITHOUT OVERFLOW HOLE |
GB0508355D0 (en) | 2005-04-25 | 2005-06-01 | Hornbeam Ivy Ltd | Plug |
IT1395577B1 (en) * | 2009-09-15 | 2012-10-16 | Ravani Sifoni S R L | EXHAUST DRAIN FOR BATHTUBS, SINKS, WASHBASINS OR OTHER COLLECTION BASES OF A LIQUID |
EP2281955B1 (en) * | 2009-07-03 | 2015-11-04 | Ravani Sifoni S.r.l. | Drain with plug and overflow function of the plug |
EP3440274A4 (en) * | 2016-04-03 | 2019-12-11 | SP-Technologies Ltd. | Drain cover assembly |
GB2553352A (en) * | 2016-09-05 | 2018-03-07 | Mcalpine & Co Ltd | Shower drain fitting |
KR101926851B1 (en) * | 2016-12-13 | 2019-03-07 | (주)이코존 | Odor-blocking drain plug |
CN106677286A (en) * | 2017-03-21 | 2017-05-17 | 申鹭达股份有限公司 | Washing basin drainer with water overflowing function |
DE102018007837A1 (en) * | 2018-10-04 | 2020-04-09 | Burgbad Ag | Overflow device especially for a washing area in the sanitary area |
IT201800020326A1 (en) * | 2018-12-20 | 2020-06-20 | Ravani S R L | Sanitary drain |
IT201800020344A1 (en) | 2018-12-20 | 2020-06-20 | Ravani S R L | Sanitary drain |
IT202200008579A1 (en) * | 2022-04-29 | 2023-10-29 | Ravani S R L | Obturator of a drain for sanitary ware and drain including said obturator |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA875802A (en) * | 1970-10-02 | 1971-07-20 | K. S. H. Selck Canada Limited | Closure element |
AU6615781A (en) * | 1980-01-10 | 1981-07-16 | Mckay, S.K. | Hydroulic plug |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1467965A (en) * | 1923-01-12 | 1923-09-11 | Earl G Watrous | Waste or outlet valve |
FR762398A (en) * | 1933-10-16 | 1934-04-10 | Emptying device for washbasins and similar devices | |
GB1180676A (en) * | 1968-04-17 | 1970-02-11 | Hilding Strom | A drain valve for bath tubs, basins and like vessels |
US4276662A (en) * | 1979-10-11 | 1981-07-07 | Victor Young | Plug device for drainpipe of basin or bathtub |
US4597112A (en) * | 1985-05-08 | 1986-07-01 | Casper Cuschera | Spring sealed drain fitting |
JPH0428948Y2 (en) * | 1987-03-31 | 1992-07-14 |
-
1991
- 1991-05-02 WO PCT/AU1991/000178 patent/WO1991016847A1/en not_active Application Discontinuation
- 1991-05-02 JP JP91508703A patent/JPH05507008A/en active Pending
- 1991-05-02 EP EP19910909000 patent/EP0531316A4/en not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA875802A (en) * | 1970-10-02 | 1971-07-20 | K. S. H. Selck Canada Limited | Closure element |
AU6615781A (en) * | 1980-01-10 | 1981-07-16 | Mckay, S.K. | Hydroulic plug |
Non-Patent Citations (1)
Title |
---|
See also references of WO9116847A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP0531316A1 (en) | 1993-03-17 |
JPH05507008A (en) | 1993-10-14 |
WO1991016847A1 (en) | 1991-11-14 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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17P | Request for examination filed |
Effective date: 19921123 |
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AK | Designated contracting states |
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Kind code of ref document: A4 Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL SE |
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17Q | First examination report despatched |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 19960410 |
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18RA | Request filed for re-establishment of rights before grant |
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R18Z | Request filed for re-establishment of rights before grant (corrected) |
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