GB2237825A - Apparatus for ventilating a toilet bowl - Google Patents
Apparatus for ventilating a toilet bowl Download PDFInfo
- Publication number
- GB2237825A GB2237825A GB9024449A GB9024449A GB2237825A GB 2237825 A GB2237825 A GB 2237825A GB 9024449 A GB9024449 A GB 9024449A GB 9024449 A GB9024449 A GB 9024449A GB 2237825 A GB2237825 A GB 2237825A
- Authority
- GB
- United Kingdom
- Prior art keywords
- waste material
- disposal apparatus
- valve
- material disposal
- passageway
- 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- Withdrawn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
- E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
- E03D9/00—Sanitary or other accessories for lavatories ; Devices for cleaning or disinfecting the toilet room or the toilet bowl; Devices for eliminating smells
- E03D9/04—Special arrangement or operation of ventilating devices
- E03D9/05—Special arrangement or operation of ventilating devices ventilating the bowl
- E03D9/052—Special arrangement or operation of ventilating devices ventilating the bowl using incorporated fans
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)
Abstract
A toilet flush assembly incorporates an extractor fan assembly (56) in order to remove noxious gases from the toilet bowl (24). A two way valve (32) alternates flow through the syphonic tube (16) and extractor tube (49). A second valve (44) may restrict flow through the passageway (48) in connection with the toilet bowl (24). <IMAGE>
Description
WASTE MATERIAL DISPOSAL APPARATUS
This invention relates to waste material disposal apparatus.
Waste material disposal apparatus such as toilets and the like are well known.
Extractors, per se, are also well known. These known extractors are used to extract foul odours. Extractors appear in many forms and are generally mounted upon a wall, ceiling, floor or window, for example in a kitchen or a toilet compartment or enclosure.
According to the present invention there is provided a waste material disposal apparatus comprising a body defining an enclosure in which noxious gases may accumulate during use of the apparatus, means for discharging waste material from the apparatus and extraction means for removing the noxious gases.
In a preferred embodiment of the invention the waste material disposal apparatus comprises a toilet. The enclosure comprises the toilet bowl. The means for discharging waste material comprises a flush assembly having at least ore passageway.
The extraction means is connected to at least one of said passageways. The extraction means is provided within at least one of said passageways. One of said passageways opens into a water container, one of said passageways opens into the enclosure and one of the passageways provides an exit for noxious gases.
At least one closure means is provided fcr controlling flow through any of the passageways. A single closure means is provided for controlling flow through more than one passageway. Each of the passageways are connected to a chamber. A valve is provider in the chamber. This valve is a two-way valve. The valve comprises two valve seats and is pivotally mounted. The valve is adapted to restrict flow through at least one of the passageways opening into the water container and the exit passageway for the noxious gases. A further valve controls flow through the pasageway opening into the enclosure. A safety valve is provided in the exit passageway for noxious gases.
The extraction means is not operated for at least some of the time during which the means fcr discharging waste material is in operation. The extraction means is activated by at least one of the following: a pull switch, a button switch, a door activated switch, a seat activated switch or a light activated switch.
In a further preferred embodiment of the invention the passageway opening into the water container and the passageway for noxious gases are connected together by a connecting passageway. The apparatus further comprises means for controlling flow through the connecting passageway. This means for cortrolling the flow through the connecting passageway comprises a blocking valve resiliently biased towards a shoulder defining an aperture in the passageway opening into the water container. The blocking valve is movable to a second position in which the blocking valve engages a shoulder defining an aperture in the exit passageway. A single valve controls flow through the passageway opening into the water container and the exit passageway. This valve is pivotally mourted adjacent one of the passageways.A rotatable blocking valve restricts flow through at least one of the passageways. The rotatable blocking valve controls flow through the passageway opening into the enclosure. A further rotatable blocking valve controls flow through the passageway opening into the water container and the exit passageway.
Specific embodiments of the invention will now be described by way of example only with reference to the accompanying drawings in which:
Figure 1 is a styalised view of a waste disposal apparatus in accordance with the invention applied to a conventional flush toilet;
Figure 2 is a magnified view of the valve assembly illustrated in Figure 1 Figure 3 is a magnified view of the extractor fan assembly illustrated in Figure 1;
Figure q shows a schematic wiring assembly of the extractor fan cf Figure 1;
Figures 5 to 9 show the waste disposal apparatus throughout the extraction and flushing cycle of the apparatus of Figure 1;;
Figure 10 shows a second waste disposal apparatus in accordance with the invention
Figure 11 is a further embodiment of the circuitry of Figure 4 Figure 12 is a still further embodiment of the circuitry of
Figure 4;
Figures 13, 14 and 15 show a part of a further waste disposal apparatus in accordance with the invention showing the operation of the valve assembly thereof; and
Figures 16 and 17 show a part of a further waste disposal apparatus in accordance with the invention showing the operation of the valve assembly thereof.
Referring to Figures 1 to 9 a toilet flush assembly 10 comprises a cistern 12 containing water 14. A syphonic tube 16 extends upwardly from its free er.d 18 which is located substantially adjacent the base 22 of cistern 12. The syphonic tube bends through 1800C below the top of the cistern 12 and subsequently extends downwardly through base 22 of the cistern to toilet bowl 24.
A first chamber 26 opens into the sphonic the 16 substantially adjacent the base 22 of the cistern 12. An exit 30 is provided in the first chamber 26 which leads into an enlarged part 50 of an exhaust tube 49.
A two way valve 32 is located in the first chamber 26.
The two way valve 32 comprises two valve seats 34, 36 which extend from a common pivot 38. The tfio way valve 32 is rotatably movable about pivot 38 between a first position in which the first valve seat 34 prevents flow from the syphonic tube 16 into the chamber via entrance 40 and flow through exit 30 is substantially unrestricted as is shorn in Figures 1 and 2 and a second position in which the second valve seat 36 substantially prever.ts flow through exit 30 from chamber 26 ard the flow through entrance 40 to the chamber 26 is substantially Lnrestricted as shown in Figures 8 and 9.
A shut off valve 44 is pivotally mounted at a pivot 45 which is located adjacent exit 42 of chamber 26. The shut cff valve 44 may be moved from the open position as shown in
Figure 2 to a closed position which prevents flow through the lower part 48 of syphonic tube 16. The shut off valve 44 maybe closed by pulling the external closure linkage 47 thus raising internal closure linkage 46 which is connected to the shut off valve 44.
The enlarged part 50 of the exhaust pipe 49 comprises a safety valve 52, 54. The safety valve 52, 54 is a simple snorkle valve comprising a ball 52 which may releasably engage shoulder 54.
An extraction fan assembly 56 is located in a second chamber 58 formed in the exhaust pipe 49. The extraction fan assembly comprises a baffle 60 extending across the second chamber 58 substantially adjacent the entrance to the second chamber 58.
A fan is provided in a central aperture 65 in the baffle 60.
The fan 62 is mounted on a drive shaft 64 which is driven by an encapsulated motor 66 controlled by printed circuitry 68.
When power is applied to the encapsulated motor 66, the fan 62 is driven via the drive shaft 64. Noxious gases and air are sucked by the fan 62, through the aperture 65 in the baffle 60 and subsequently pass around the encapsulated motor assembly 66 and are discharged from the unit. The encapsulation of the motor assembly 66,68 ensures that any water droplets which may be drawn up by the fan 62 will be safely discharged from the unit, without causing damage or interference to any electrical components.
When the extraction fan assembly 56 is in operation whilst the toilet is in use, the noxious gases within the lavatory bowl 24 will be extracted via the lower part 48 of the syphonic tube 16, the open shut-off valve 44, the two way valve 32, the safety valve 52,54 and the extraction fan assembly 56 and then removed from the toilet enclosure via the exhaust pipe 49.
When the toilet is to be flushed, the action of lifting the internal closure linkage 46 by pulling the external linkage 47 will cause the shut-off valve 44 to close. As the extraction fan assembly 56 is still operating, a vacuum will be created within the syphonic tube 16 and water will be forced from the cistern 12 into the syphonic tube 16. The force of the water as it descends the syphonic tube 16 on the first valve seat 34 will cause the two way valve 32 to rotate about pivot 38 until the head 36 of the two way valve 32 bears against the entrance to the safety valve 52,54. This action will shut off the suction from the fan 62. The suction from the chamber 26 will continue to be blocked as the suction from the fan will continue to hold the head 34 of the two way valve 32 in place.Thus all the water in the system will be allowed to exit into the lavatory bowl when the shut-off valve 44 is re-opened.
In the event of a failure of the two way valve 32, water will be sucked into the safety valve 52,54 which, being a simple snorkle valve, will close as the floating ball 52 rises upon the flow of water to engage the shoulder 54. This action will effectively prevent water leaving the system, and will not prevent the flushing action from commencing when the shut-off valve 32 is re-opened.
Lowering of internal closure linkage 46 by means of manually releasing the external linkage 47 will cause the shut-off valve 44 to re-open and the force of gravity will flush the water in the cistern 12 into the lavatory bowl 24, thus removing any waste matter in the lavatory bowl 24.
Referring to Figure 4, an electrical circuit 68 comprises a motor 66, switch 70, float switch 72, A.C. rectifier 74, mains transformer 76 and mode two (flush only) switch 78. When switch 70 is closed, motor 66 is powered via the mains transformer 76 and rectifer 74. The fan then begins to turn thus causing an air-flow through the system. When the cistern is flushed, the fall in water level will cause the float switch 72 to open circuit and the supply to the motor 66 will be interrupted. The motor 66 will stop and will not re-start until the level of water in the cistern is almost at its maximum.This action is to ensure that the two way valve 32 is allowed to fall freely back to its position where it will not impede the flow of air throughout the system, during the next operation, whilst at the same time ensuring that any small amounts of residual water within the system are allowed to drain into the lavatory bowl rather than be sucked into the fan 60. When switch 70 is re-opened after use of the toilet, the motor 66 will no longer turn and the system will become dormant.
Figure 10 shows how the air extractor may be interfaced with existing forms of flush toilet systems in order to perform the task of removing upleasant odours and noxious gases from the lavatory bowl during use.
For this purpose, the shut-off valve 44 and internal closure linkage 46 have been removed from the complete unit, since their function will now be performed by the normal flushing action of the standard toilet assembly. Plunger 80 is located in the enlarged opening 82 of syphonic tube 16. The plunger 80 acts as a valve which may be opened by way of linkage 48.
In all other aspects the extractor operates in the same manner as the embodiment of the invention previously described.
When the toilet is in use, the extraction fan assembly 10 is activated by the user causing polluted air to be drawn from the lavatory bowl 24 via the two way valve 32 and the safety valve 52,54 through the extraction unit 56, and out through the exhaust pipe 119.
When the toilet is flushed, the pressure of water passing through the syphonic tube 16 forces down the first valve seat 34 of the two way valve 32, thus effectively shutting off the suction by causing the secured valve seat 36 to close the entrance to exhaust pipe 49.
The flushing action will continue until the cistern is emptied.
As the water level in the cistern falls, float switch 72 will open circuit, cutting off the electrical supply to the fan assembly 56.
Once the toilet has been flushed, and because there is now no longer any suction to maintain the valve 32 in the closed position, the two way valve 32 will re-open.
As the cistern 12 re-fills, the float-switch 72 will close enabling power once more to be supplied to the extraction assembly 56 and the fan 60 will resume the extraction of air from the toilet bowl 24 until the system is deactivated.
Referring now to Figures 11 and 12 there is shown further embodiments of the circuitry used to operate the fan 62. In addition to the components described in Figure 4 the embodiments of Figures 11 and 12 comprise a circuit 84 and a holding relay 86. The fan is powered by 24v alc. The circuits of Figures 11 and 12 have two essential switching modes.
SWITCHING MODE ONE.
This comprises an external switch by which means the system may be activated. This switch may be either a simple pull-switch or push button switch that the user may operate manually or an automatic switching arrangement such as a door activated switch, seat activated switch or the switch may be linked to an internal light switch for example in the case of totally enclosed or windowless toilet cubicles. The operation of the system may be commenced by any of these switching arrangements, and the system may be deactivated by the same method, except in the case where a time circuit has been linked to the fan motor to allow the removal of tainted air to continue for a pre-set time period after the system has been deactivated.
SWITCHING MODE TWO.
This comprises an internal switch set to operate the fan motor each time the flush handle is depressed. This form of switch is neccesary to ensure that the toilet will flush as the handle is depressed even though the fan may not be operating at that time (for example: during cleaning when the system may not have been initiated by switching mode one, and yet the toilet must be flushed). This mode "two" overrides mode "one" to enable the system to be flushed regardless of whether or not the system has been activated. In the case of mode "one" using a seat pressure switch, for example, it will be necessary for the toilet to be flushed by mode "two", after the toilet has been used by someone who did not sit on the seat.
Referring to Figures 13 to 15 a waste disposal apparatus 110 comprises a cistern 112 containing water 114. A syphonic tube 116 extends upwardly from its free end 118 which is located substantially adjacent the base 122 of the cistern 112, extends through a 1800 bend and downwardly to the top 126 of a chamber 124 located above and adjacent the base 122 of the cistern 112.
An exhaust pipe 128 also extends vertically from the top 126 of the chamber 124 the exhaust pipe 128 extending parallel to the vertical parts of the syphonic tube 116. An open ended connecting tube 130 extends between the syphonic tube 116 and exhaust pipe 128. A sliding valve 132 is biased by a pressure spring 134 a shoulder defining an aperture 136 extending through the wall of the syphonic tube 116.
One end of a blocking valve 138 is pivotally mounted adjacent the top 126 of the chamber 124. The blocking valve is movable between a first position as shown in Figures 13 and 15 in which the blocking valve does not block flow through the free ends 140, 142 of either the syphonic tube 116 or exhaust pipe 128 and a second position as shown in Figure 14 in which flow through the free ends 140,142 of the syphonic tube 116 and the exhaust pipe 128 is substantially prevented.
A safety valve 144 is provided in the exhaust pipe 128 above the connecting aperture 145 with the connecting member 130. This safety valve comprises a ball 146 which may engage shoulder 148 so as to prevent flow through the exhaust pipe 128.
The upper part of exhaust pipe 128 is connected to a fan assembly in a similar manner to that previously described with reference to Figures 1 to 12.
In use when gases are to be extracted from the toilet bowl the valves are arranged as shown in Figure 13. The sliding valve 132 is biased against aperture 136 so as to prevent flow through the connecting member 130 and the blocking valve 138 allows air flow through exhaust pipe 142. Gases are drawn from the toilet bowl and through the chamber 124 and exhaust pipe 128 under the action of the fan (not shown).
In order to prime the flush (see Figure 14) the blocking valve 138 moves about its pivot to prevent flow through the apertures 140,142 into the syphonic tube 116 and the exhaust pipe 128. This movement may be achieved manually by operating a linkage handle connected to the blocking valve 138. At this time the fan (not shown) continues to operate and gases continue to be drawn from the exhaust pipe 128, and connecting tube 30 creating a partial vacuum. This causes external air pressure to force water from the cistern 112 through syphonic tube 116 and simultaneously withdraws the sliding valve 132 to the opposite end 147 of the connecting member 130. The amount of water in the syphonic tube now remains static.
The flushing operation will now be described with reference to Figure 14. When the flush handle is released the blocking valve 138 moves away from the apertures 140,142 to the position shown in Figure 14. The water in the syphonic tube 116 now empties into the toilet bowl causing the water in the cistern 112 to be drawn through the syphonic tube 116 and into the toilet bowl. The fall of the water level in the cistern 112 causes the fan to be deactivated by means of a float switch.
Referring to Figure 16 there is shown an alternative valve for the valve designated 44 in the embodiment of Figure 1.
Figure 17 shows the same valve for use in the embodiment of the invention described with reference to Figures 13 and 14 of the present application. The valves shown in Figures 16 and 17 are rotary blocking valves which are advantageously used when maximum utilization of space is required.
Referring to Figure 16 the rotary blocking valve 150 comprises transversely mounted rod 152 with an aperture 154 extending through the rod perpendicular to its major axis.
This rod 152 is rotatably mounted within a horizontal tube 154 bisecting the lower part 149 of syphonic tube 116. In use the rod may be rotated such that the aperture 154 is aligned with the bore defined by syphonic tube 116 so as to open the valve, and rotated through ninety degrees such that the tube 154 is out of line with the bore of syphonic tube 116 so as to close the valve.
With reference to Figure 17 the apertures 156 through the rod 158 has three inlets 160, 162, 164 which align with openings 140, 142, 143 of the upper part of the syphonic tube 116, the exhaust pipe 128 and the lower part of the syphonic tube respectively. Opening of the valve is achieved by aligning the inlets 160, 162, 164 with the respective openings 140, 142, 143 as shown in Figure 17. The valve may be closed by rotating the rod 158 through ninety degrees.
In the embodiments shown in Figures 16 and 17 the valve may be opened manually or by a linkage arm.
It is to be understood that the above described embodiment is by way of illustration only. Many modifications and variations are possible.
For example the valves previously described may be absent and the extractor fan assembly may be deactivated as the flush assembly is operated. In this any flow of water to the extractor fan assembly may be substantially prevented.
Claims (28)
1. A waste material disposal apparatus comprising a body defining an enclosure in which noxious gases may accumulate during use of the apparatus, means for discharging waste material from the apparatus and extraction means for removing the noxious gases.
2. A waste disposal apparatus as claimed in claim 1, wherein the waste material disposal apparatus comprises a toilet.
3. A waste material disposal apparatus as claimed in claim 1 or claim 2, wherein the means for discharging waste material comprises a flush assembly having at least one passageway.
4. A waste material disposal apparatus as claimed in claim 3, wherein the extraction means is connected to at least one of said passageways.
5. A waste material disposal apparatus as claimed in claim 3 or claim 4, wherein the extraction means is provided within at least one of said passageways.
6. A waste material disposal apparatus as claimed in any of claims 3 to 5, wherein one of said passageways opens into a water container, one of said passageways opens into the enclosure and one of the passageways provides an exit for the noxious gases.
7. A waste material disposal apparatus as claimed in any of claims 3 to 6, wherein at least one closure means is provided for controlling flow through any of the passageways.
8. A waste material disposal apparatus as claimed in claim 7, wherein a single closure means is provided for controlling flow through more than one passageway.
9. A waste material disposal apparatus as claimed in claim 6, claim 7 or claim 8 wherein each of the passageways are connected to a chamber.
10. A waste material disposal apparatus as claimed in claim 9, wherein a valve is provided in the chamber.
11. A waste material disposal apparatus as claimed in claim 10, wherein said valve is a two way valve.
12. A waste material disposal apparatus as claimed in claim 10 or claim 11, wherein the valve comprises two valve seats.
13. A waste material disposal apparatus as claimed in any of claims 10 to 12, wherein the valve is pivotally mounted.
14. A waste material disposal apparatus as claimed in any of claims 10 to 13 as appendant to any of claims 3 to 9, wherein the valve is adapted to restrict flow through at least one of the passageways opening into the water container and the exit passageway for the noxious gases.
15. A waste material disposal apparatus as claimed in any of claims 6 to 14, wherein a further valve controls flow through the passageway opening into the enclosure.
16. A waste material disposal apparatus as claimed in any of claims 3 to 15, wherein a safety valve is provided in the exit passageway for noxious gases.
17. A waste material disposal apparatus as claimed in any preceding claim, wherein the extraction means is not operated for at least some of the time during which the means for discharging waste material is in operation.
18. A waste material disposal apparatus as claimed in any preceding claim, wherein the extraction means is activated by at least one of the following: a pull switch, a button switch, a door activated switch, a seat activated switch or a light activated switch.
19. A waste material disposal apparatus as claimed in any of claims 6 to 18 wherein the passageway opening into the water container and the exit passageway for noxious gases are connected together by a connecting passageway.
20. A waste material disposal apparatus as claimed in claim 19 further comprising a means for controlling flow through the connecting passageway.
21. A waste material disposal apparatus as claimed in claim 20, wherein the means for controlling flow through the connecting passageway comprises a blocking valve resiliently urged towards a shoulder defining an aperture in the passageway opening into the water container.
22. A waste material disposal apparatus as claimed in claim 21, wherein the blocking valve is movable to a second position in which the blocking valve engages a shoulder defining an aperture in the exit passageway.
23. A waste material disposal apparatus as claimed in any preceding claim, wherein a single valve controls flow through the passageway opening into the water container and the exit passageway.
24. A waste material disposal apparatus as claimed in claim 23, wherein the valve is pivotally mounted adjacent one of two passageways.
25. A waste material disposal apparatus as claimed in any preceding claim, wherein a rotating block valve restricts flow through at least one of the passageways.
26. A waste material disposal apparatus as claimed in claim 25 wherein the rotating blocking valve controls flow through the passageway opening into the enclosure.
27. A waste material disposal apparatus as claimed in claim 25 or claim 26 wherein the rotating blocking valve controls flow through the passageway opening into the water container and the exit passageway.
28. A waste material disposal apparatus as substantially hereinbefore defined with reference to the accompanying Figures 1 to 9; Figure 10, Figures 1 to 9 or 10 as modified by the circuitry of Figure 11; Figures 1 to 9 or 10 as rrodified by the circuitry of Figure 12; Figures 13,14 and 15 or Figures 16 and 17.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9024449A GB2237825A (en) | 1989-11-09 | 1990-11-09 | Apparatus for ventilating a toilet bowl |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB898925370A GB8925370D0 (en) | 1989-11-09 | 1989-11-09 | Waste material disposal apparatus |
| GB909021443A GB9021443D0 (en) | 1990-10-02 | 1990-10-02 | Waste material disposal apparatus |
| GB9024449A GB2237825A (en) | 1989-11-09 | 1990-11-09 | Apparatus for ventilating a toilet bowl |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9024449D0 GB9024449D0 (en) | 1991-01-02 |
| GB2237825A true GB2237825A (en) | 1991-05-15 |
Family
ID=27264790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9024449A Withdrawn GB2237825A (en) | 1989-11-09 | 1990-11-09 | Apparatus for ventilating a toilet bowl |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2237825A (en) |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4313406A1 (en) * | 1992-04-24 | 1993-10-28 | Ludwig Pilsl | Toilet ventilation system - has flap valve between flushing tank and bowl, connected to fan sucking air through from bowl |
| US5259072A (en) * | 1992-02-24 | 1993-11-09 | Trombley Ronald W | Toilet ventilation assembly including fluid extraction device |
| GB2297566A (en) * | 1995-02-03 | 1996-08-07 | Hai Christopher Kan | Toilet pan ventilation device |
| GB2319268A (en) * | 1996-11-07 | 1998-05-20 | Michael Graham Nichola Hawkins | Ventilation and flushing unit for a toilet |
| GB2321654A (en) * | 1997-02-04 | 1998-08-05 | Mike Robert Harding | Toilet bowl ventilator |
| DE19720673A1 (en) * | 1997-05-16 | 1998-11-19 | Loesner Witold | Ventilation for WC |
| GB2352739A (en) * | 1999-07-30 | 2001-02-07 | Kellair Systems Ltd | Odour extractor and optional fragrance dispenser for use in ventilating a toilet |
| EP1149955A1 (en) * | 2000-04-28 | 2001-10-31 | Andrea Previato | Equipment for ventilating a water-closed |
| GB2362167A (en) * | 2000-05-10 | 2001-11-14 | John Ernest Frederick Corfield | Apparatus for ventilating a water closet |
| GB2365879A (en) * | 2000-06-14 | 2002-02-27 | Christopher Thomas Townsend | Ventilation of water closets |
| EP1235038A2 (en) * | 2001-02-26 | 2002-08-28 | Corrado Zaghini | Device for the expulsion of bad-smelling odours |
| GB2384495A (en) * | 2000-11-10 | 2003-07-30 | Thomas Harrison | Toilet ventilation system |
| WO2003085214A1 (en) * | 2002-04-11 | 2003-10-16 | Eczacibasi Yapi Gerecleri Sanayi Ve Ticaret A.S | Stench-free toilet system |
| GB2387855A (en) * | 2002-04-22 | 2003-10-29 | Steve Trisic | Ventilation system for a toilet bowl |
| WO2004106652A1 (en) * | 2003-05-28 | 2004-12-09 | Kovacs Gyoergy | Odour extraction system with fluid tank valve |
| DE10354540A1 (en) * | 2003-11-14 | 2005-06-30 | Henryk Zarniewicz | Room air suction device for directly extracting fecal gases from toilet bowl, has sealing member which creates water-tight seal in flush pipe when flap is in closed position |
| WO2005098154A2 (en) * | 2004-04-08 | 2005-10-20 | Concept(Ebh) Ltd | Toilet odour ventilation system |
| GB2444057A (en) * | 2006-11-23 | 2008-05-28 | Geoffrey John Weavell | Odourless toilet |
| BE1017370A5 (en) * | 2006-11-22 | 2008-07-01 | Eureka Concept Sprl | WC BASIN. |
| GB2525017A (en) * | 2014-04-08 | 2015-10-14 | Tim Elsdale | Self venting toilet |
| BE1023194B1 (en) * | 2011-02-23 | 2016-12-19 | Luc Michel | Bowl with odor suction system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2182368A (en) * | 1985-10-29 | 1987-05-13 | Geoffrey Ashcroft | Ventilating a water closet |
| GB2200149A (en) * | 1987-01-20 | 1988-07-27 | Dr Khodayar Rashidi | Integrated w.c. cistern-fume extractor |
-
1990
- 1990-11-09 GB GB9024449A patent/GB2237825A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2182368A (en) * | 1985-10-29 | 1987-05-13 | Geoffrey Ashcroft | Ventilating a water closet |
| GB2200149A (en) * | 1987-01-20 | 1988-07-27 | Dr Khodayar Rashidi | Integrated w.c. cistern-fume extractor |
Cited By (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5259072A (en) * | 1992-02-24 | 1993-11-09 | Trombley Ronald W | Toilet ventilation assembly including fluid extraction device |
| US5369812A (en) * | 1992-02-24 | 1994-12-06 | Trombley; Ronald W. | Toilet ventilation assembly including fluid extraction device |
| DE4313406A1 (en) * | 1992-04-24 | 1993-10-28 | Ludwig Pilsl | Toilet ventilation system - has flap valve between flushing tank and bowl, connected to fan sucking air through from bowl |
| GB2297566A (en) * | 1995-02-03 | 1996-08-07 | Hai Christopher Kan | Toilet pan ventilation device |
| GB2319268A (en) * | 1996-11-07 | 1998-05-20 | Michael Graham Nichola Hawkins | Ventilation and flushing unit for a toilet |
| GB2319268B (en) * | 1996-11-07 | 2000-11-15 | Michael Graham Nichola Hawkins | Ventilation and flushing unit for a toilet |
| GB2321654A (en) * | 1997-02-04 | 1998-08-05 | Mike Robert Harding | Toilet bowl ventilator |
| DE19720673A1 (en) * | 1997-05-16 | 1998-11-19 | Loesner Witold | Ventilation for WC |
| GB2352739A (en) * | 1999-07-30 | 2001-02-07 | Kellair Systems Ltd | Odour extractor and optional fragrance dispenser for use in ventilating a toilet |
| EP1149955A1 (en) * | 2000-04-28 | 2001-10-31 | Andrea Previato | Equipment for ventilating a water-closed |
| GB2362167A (en) * | 2000-05-10 | 2001-11-14 | John Ernest Frederick Corfield | Apparatus for ventilating a water closet |
| GB2365879A (en) * | 2000-06-14 | 2002-02-27 | Christopher Thomas Townsend | Ventilation of water closets |
| GB2384495A (en) * | 2000-11-10 | 2003-07-30 | Thomas Harrison | Toilet ventilation system |
| GB2384495B (en) * | 2000-11-10 | 2005-06-01 | Thomas Harrison | Toilet ventilation system |
| EP1235038A2 (en) * | 2001-02-26 | 2002-08-28 | Corrado Zaghini | Device for the expulsion of bad-smelling odours |
| EP1235038A3 (en) * | 2001-02-26 | 2004-01-07 | Corrado Zaghini | Device for the expulsion of bad-smelling odours |
| WO2003085214A1 (en) * | 2002-04-11 | 2003-10-16 | Eczacibasi Yapi Gerecleri Sanayi Ve Ticaret A.S | Stench-free toilet system |
| GB2387855A (en) * | 2002-04-22 | 2003-10-29 | Steve Trisic | Ventilation system for a toilet bowl |
| WO2004106652A1 (en) * | 2003-05-28 | 2004-12-09 | Kovacs Gyoergy | Odour extraction system with fluid tank valve |
| JP2007500295A (en) * | 2003-05-28 | 2007-01-11 | ギョルジー コボッチャ | Odor extraction system with fluid tank valve |
| US7685653B2 (en) | 2003-05-28 | 2010-03-30 | Gyorgy Kovacs | Odor extraction system with fluid tank valve |
| DE10354540A1 (en) * | 2003-11-14 | 2005-06-30 | Henryk Zarniewicz | Room air suction device for directly extracting fecal gases from toilet bowl, has sealing member which creates water-tight seal in flush pipe when flap is in closed position |
| WO2005098154A2 (en) * | 2004-04-08 | 2005-10-20 | Concept(Ebh) Ltd | Toilet odour ventilation system |
| GB2418931A (en) * | 2004-04-08 | 2006-04-12 | Concept | Toilet odour ventilation system |
| WO2005098154A3 (en) * | 2004-04-08 | 2006-04-27 | Concept Ebh Ltd | Toilet odour ventilation system |
| BE1017370A5 (en) * | 2006-11-22 | 2008-07-01 | Eureka Concept Sprl | WC BASIN. |
| GB2444057A (en) * | 2006-11-23 | 2008-05-28 | Geoffrey John Weavell | Odourless toilet |
| BE1023194B1 (en) * | 2011-02-23 | 2016-12-19 | Luc Michel | Bowl with odor suction system |
| GB2525017A (en) * | 2014-04-08 | 2015-10-14 | Tim Elsdale | Self venting toilet |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9024449D0 (en) | 1991-01-02 |
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| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |