CN1932175A - Non-leaking water-saving cistern according to requirement water - Google Patents
Non-leaking water-saving cistern according to requirement water Download PDFInfo
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- CN1932175A CN1932175A CN 200610131950 CN200610131950A CN1932175A CN 1932175 A CN1932175 A CN 1932175A CN 200610131950 CN200610131950 CN 200610131950 CN 200610131950 A CN200610131950 A CN 200610131950A CN 1932175 A CN1932175 A CN 1932175A
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Abstract
The present invention relates to a water-saving water tank which does not leak and can utilize water according to needs. Said water-saving water tank can be mainly used for sanitary equipment, and is formed from the following several portions: external water tank, internal water tank, driving mechanism, water tank cover and basin, ceramic core valve, water inlet valve, water outlet and silent deflector, etc. Said invention also provides the concrete structure of above-mentioned every portion and concrete connection mode of all the above-mentioned portions.
Description
Technical field
The present invention relates to the water tank of sanitaryware, water-tight specifically, the cistern for toilet water-saving cistern of water as required.
Background technology
At present, often there is draining valve to close tightly not leak " leaking down " problem in the flush toilet of sanitaryware, " go up and the leak " problem that exists the water inlet float valve slowly to leak, and the wash water amount forms three big problems such as waste too much at every turn.Show that according to the interrelated data report only a Beijing will miss the water of a Guanting reservoir in 1 year.
Water inlet float valve in the prior art in the water-closet tank closes valve by applying pressure to rubber parts, promptly applies pressure to rubber parts in the valve by the buoyancy of buoyancy aid, and the sealing water inlet stops into water.It is durable that rubber parts is owed, and causes water clock after the abrasion easily so that the running water of tricklet, makes the water of water tank cover overfall and miss.
A kind of siphon drainage type water tank, though stopped time to leak, each water must deplete whole box water just and can stop draining, the water supply volume maximum.
Another kind is provided with the two two water level water tanks by key control of full case/half chests, and delivery is arranged, as 6 liters, or half discharge capacity, as 3 liters of two kinds of selections.Each water is half chests at least, though water-saving result is arranged, still has the problem of many water wastings.In addition, the dibit water tank does not solve leakage problem down equally, and this water tank also is not easy to maintenance.
In order to reduce the noise that is arranged on water-closet tank bath in the sitting room, " quiet " water tank has appearred.The height of water of this water tank is little, can obtain the effect that rinses again in order to remedy the impulse force deficiency, unavoidable many water consumptions.
Adopt the water-closet tank of curved spout draining, though water saving, flexible pipe prolonged and repeated curved around, unavoidable fracture by fatigue still can cause down and leak.
Problems such as though can not descend Lou, there is complex structure in the water tank that adopts jet current principle to control, and is durable inadequately, and the maintenance cost height, economical.
For using water wisely, world's toilet tissue and various countries have put into effect the regulation of restriction water tank volume.But, must dash twice as the bath poor effect.May not water-saving, what if?
The retrieval that comprises the interrelated data of Chinese patent shows, the not only supreme leakage of not seeing the cover box structure as yet do not have down yet leak, but also the relevant report of the cistern for toilet water-saving cistern of water as required.
Summary of the invention
In order to overcome the defective of prior art, the objective of the invention is to provide a kind of cistern for toilet water-saving cistern that not only can stop to leak but also can control water supply volume as required.
The technical solution used in the present invention is: water-tight, the cistern for toilet water-saving cistern of water as required, comprise an outer water tank and water intaking valve, and it is characterized in that: the cover box structure has a rotary inner water tank; Have one can control the transmission mechanism that inner water tank rotates, on pivot center, two concentric shafts passing through between outer water tank and the inner water tank are implemented supporting in the mode of interference fits and are connected; Upper semisection at outer water tank is equipped with water intaking valve, and water intaking valve is a Ceramic core valve, makes float valve, and its buoyancy aid drops in the inner water tank, and the turning handle of water intaking valve is connected with the lever of the buoyancy aid of ining succession; Water intaking valve is connected to the Discharging bent-tube that reaches the water tank top; The inner chamber of described outer water tank lower semisection is the cavity that arc-shaped curved surface and planed joint form; The shape of described inner water tank is a cylindrical drum of having excised a part of cylinder; A handle is housed on the described inner water tank; The top of described outer water tank can add the tank lid that has basin.Behind the inner water tank water-filling, make with hand actuating handle that inner water tank rotates, pouring, just can flush toilet; Inner water tank is replied turn to horizontal level, just can stop pouring; The speed that water supply volume is rotated by the rotation amplitude and the answer of inner water tank decides.
The invention has the beneficial effects as follows:
1., stop down to leak, water supply volume can be controlled as required is most important two purposes, product must be durable in use.For this reason, developing does not have draining valve, two cisten mechanisms of housing-case case.
2., for improving impulse force, suitably improve the water tank setting height(from bottom);
3., for the kinetic energy that improves the bath current and help water saving, the space in reducing between the outer water tank;
4., for economizing on water and being beneficial to the raising impulse force, after the use new technology, needn't limit the moisture storage capacity of water tank;
5., be further water saving, water tank of the present invention can use the secondary water source;
6., for stopping to leak, should be able to observe the current that inject water tank;
7., for ease of safeguarding that water intaking valve is installed in top;
8.,, use recyclable materials, as metal, plastics, glass for environmental protection and energy-conservation more.
The present invention is specially adapted to the update of sanitary equipment water tank, can stop down to leak, and also can stop the water clock of water intaking valve, and water supply volume to a FCL, all is convenient to random control from half cuvette
Description of drawings
Below in conjunction with drawings and Examples the present invention is described in detail.
Fig. 1. 8. 1 kinds of upward views of combing the stream pipe of overall construction drawing
Fig. 2. vertical view Fig. 9 of a whole set of flush toilet. a kind of tube core 12 of combing the stream pipe
But Fig. 3. the cistern for toilet water-saving cistern that dwindles schematic perspective view diagram 10. dual-purpose secondary water sources of inner water tank 21
Fig. 4. a kind of Water-saving high-level water tank that dwindles front view 11. crouching formula flush toilet of inner water tank 21 profiles
Fig. 5. but the inner water tank that can reduce the rotation height dwindles the stainless steel cistern for toilet water-saving cistern at front view 12. dual-purpose secondary water sources
Fig. 6. outer water tank 1 Figure 13 of water intaking valve 41 is housed. the oblate spheroid stainless steel inner water tank assembly of otch
Fig. 7. shaft side figure Figure 14 of the gutter of comb stream pipe effect is arranged. can reduce the stainless steel cistern for toilet water-saving cistern of water inlet noise
Component serial number and title are summarized in down:
1～outer water tank, 2～closet, 3～axis hole, 4～arc groove, 5～scale mark, 6～see-through window, 7～installing hole, 8～finger hole, 9～arc-shaped curved surface, 10～lever hole, 11～gutter, 12～a kind of tube core of combing the stream pipe.
21～inner water tank, 22～concentric shafts, 23～handle, the 24～arc muscle of dashing forward, 25～fork, 26～swing handle, 27～gentle rope, 28～fixed point, 29～handle.
31～tank lid, 32～basin, the outfall of 33～basin, 34～quiet deflector.
41～water intaking valve, 42～lever, 43～buoyancy aid, 44～take over 45～water inlet interface, 46～swivelling union, 47～upper water-out bend pipe.
For ease of understanding, the rule of sequence number is described: a whole set of water tank is by outer water tank 1, inner water tank 21, tank lid 31 and water intaking valve 41 4 big parts consist of. Four big parts and sequence number corresponding to subordinate's parts thereof are respectively 1～20,21～30,31～40,41～50. Four group # all do not use up, so sequence number has interruption. Except 11, the units of each big parts sequence number all is 1.
Fig. 1 is overall construction drawing. Fig. 2 is the top view of a whole set of water closet, and longitudinal axis (vertical direction) passes through outer water tank 1 With closet 2, the center line of horizontal direction, it is the transversal line of outer water tank 1 geometric center.
In outer water tank 1, be inserted in rotatable inner water tank 21. Water intaking valve 41 is fixed on outside the case, and its lever 42 passes outer water tank 1 On lever hole 11, extend to inner water tank 21. The buoyancy aid 43 of water intaking valve 41 drops in the inner water tank 21, and water is filled with inner water tank 21, Buoyancy aid 43 rises when putting in place, and water intaking valve 41 is just closed automatically.
The bottom of outer water tank 1 has the discharge outlet of open type, the discharge outlet water pipe 11 that runs in. Have water is arranged in the case, just have water to rush. On the longitudinal axis direction, have two axis holes on the outer water tank 1, axis hole and the concentric shafts 22 of the said inner water tank 21 of Fig. 6 hereinafter The relation that interference fits is arranged. Inner water tank 21 among Fig. 1 has rotated an angle, is in the pouring state. The rotation of inner water tank 21 Amplitude determines water consumption.
The use of cover box structure and ceramic core valve obviously has the little advantage of wearing and tearing, just reliability and durability technical connotation.
Fig. 3 is the perspective view that dwindles of inner water tank 21.
Fig. 4 is the front view that dwindles of inner water tank 21 profiles. Fig. 4 has also expressed the second kind of drive.
Go back jug 23 on the inner water tank 21. Actuating handle 23 can come back rotation inner water tank 21;
The second kind of drive that inner water tank 21 is rotated is: arrange one and be used for spurring the gentle rope 27 that inner water tank rotates, gentle rope An end of 27 is fixed on the inner water tank 21, and fixing point is 28, and the other end connects handle 29. Pulling handle 29 just can make interior water Case 21 rotates, pouring; Can finish the rotation that resets by counterweight or balancing spring inner water tank 21.
If in order to reduce total height of water tank, a part of inner water tank of can pruning. For ease of comparing with Fig. 4, Fig. 5 shows The inner water tank that can reduce the rotation height dwindles front view.
Fig. 6 shows the outer water tank 1 that water intaking valve 41 is housed. Water intaking valve 41 is installed in outside the case, and with dashed lines is drawn.
On longitudinal axis, outer water tank 1 has a pair of axis hole 3, with the concentric shafts 22 of inner water tank 21 relation of interference fits is arranged.According to the performance principle of reciprocity, the axle and the axis hole of inside and outside water tank can reciprocity, just the axle design on outer water tank 1, axis hole is designed on the inner water tank 21.
The finger hole 8 that on outer water tank 1, also has installing hole 7 and be convenient to move, 1 to 3 of quantity.
1 front on outer water tank has one section arc groove 4, and the occupy-place area of coverage that the position of this groove and space and handle 22 sweep track is complementary.For ease of predetermined water supply volume, on outer water tank 1, can add the scale mark 5 that shows water supply volume.
Be the supervision inner water tank 21 unexpected water that overflows whether, need have an X-rayed the water level of inner water tank 21, for this reason, can on outer water tank 1, open a see-through window 6, but mosaic glass on the window.
The bottom design camber curved surface 9 of outer water tank 1 inner chamber, the inner chamber of outer water tank 1 lower semisection is the cavity that arc-shaped curved surface and planed joint form.Among Fig. 1, the intracavity bottom of outer water tank 1 lower semisection is two sections faces of cylinder.The 3. part hereinafter will illustrate that this measure can strengthen impulse force, and obtain better water-saving result.The profile of outer water tank 1 lower semisection then is not restricted to one pattern, and can justify.
2., for improving impulse force, suitably improve the setting height(from bottom) of water tank:
The potential energy that improves water helps improving impulse force, so can suitably improve the setting height(from bottom) of outer water tank 1.
For sitting type water closet, the drop that outer water tank 1 bottom surface accumulates between the water surface in the toilet is good with 30cm to 60cm, requires bath noise decibel value low, takes off limit.
For crouching formula flush toilet, can keep the setting height(from bottom) of traditional high level cistern, also can improve 10cm to 30cm.Inner water tank 21 can adopt gentle rop exercise moving, also can be by a fork 25 operation inner water tanks 21, and fork is assemblied on the inner water tank 21.Figure 11 shows the water tank that fork 25 is equipped with in the present invention, and fork 25 directly is fixed on the concentric shafts 22 of inner water tank 21.
3., for the kinetic energy that improves the bath current and help water saving, the space in reducing between the outer water tank:
The bottom design camber curved surface 9 of outer water tank 1 inner chamber, corresponding to Fig. 1 and Fig. 6, best arc-shaped curved surface is the face of cylinder.Greater than the face of cylinder of inner water tank 21, it is good that both differences are controlled at 3 to 8mm to the radius on the face of cylinder slightly.Take off limit, can be in 0.5 liter the capacity limitation between the interior outer water tank, can obtain the effect of killing two birds with one stone: one, when the complete impouring of the water outer water tank 1 in the inner water tank 21, outer water tank can obtain peak level, that is,, help just toilet being rinsed with less water to the streaming potential maximum of closet flushing; Its two, fast behind the complete impouring outer water tank 1 of the water in the inner water tank 21, when estimating that toilet is about to rinse well, just timely fast rotation inner water tank 21 makes it to reset.Like this, also undischarged water in most of outer water tank 1 all can be returned inner water tank 21 by pocket, has to obtain maximum flushing potential energy, water-saving again effect.If all fast behind the impouring outer water tanks 1, its fast rotation is resetted at once, the bath potential energy maximum of this period, about 1 liter of water consumption such as is enough to satisfy that child goes to the lavatory at purposes;
In addition, also to reduce the turbulent flow of bath current, reduce the kinetic energy of bath current in order to avoid a part of potential energy of current will be consumed by turbulent flow.Thereby the gutter of outer water tank 1 can be the one section cancellate comb stream of pipe pipe, and Fig. 7 is the shaft side figure that the gutter of comb stream pipe effect is arranged.Fig. 8 is a kind of upward view of combing the stream pipe.Fig. 9 is a kind of tube core 12 of combing the stream pipe.The tube core of comb stream pipe can be made of stainless sheet steel, and the cross section of tube core can be a gridiron pattern, also can be the honeycomb lattice, or the little pipe of boundling.
For obtaining bigger impulsive force when the float amount, this side of inner water tank 21 pourings, the diameter on the face of cylinder can reduce 3 to 5mm.Another kind of antithesis way is that the face of cylinder enlarged diameter 3 of outer water tank 1 inner chamber upstream face is to 5mm.
4., for economizing on water and being beneficial to the raising impulse force, after the use new technology, needn't limit the moisture storage capacity of water tank:
Owing to suitably strengthen the moisture storage capacity of inner water tank, the potential energy of increasable flushing current, and avoid repeating to wash the drawback of water wasting on the contrary, can obtain further water-saving result.Since water supply volume is easy to control as required, so needn't limit the moisture storage capacity of inner water tank 21 after the use new technology, when using the secondary water source, the moisture storage capacity of inner water tank 21 reaches two, three decaliters exactly, also is not.
5., be further water saving, water tank of the present invention can use the secondary water source:
Water source after the secondary water source refers to recycle also can be the water behind the callable cleaning clothes.
The present invention does not close the parts of outfall, needn't worry to use the secondary water source can cause down leakage.
6., stop Lou:
In order to prevent water intaking valve 41 unexpected upward leakages, should be convenient to observe current to inner water tank 21 water-fillings.For this reason, water intaking valve (41) is connected to the Discharging bent-tube that reaches the water tank top, thereby the delivery port of water intaking valve 41 is guided to the height of being convenient to wash one's hands.Tank lid 31 is made the parts of band basin 32.On the locus, outfall 33 designs of basin are above inner water tank 21, and the water of arranging for 33 times from the outfall of basin will inject inner water tank 21 like this.The outfall 33 of basin can add screen pack.Described bend pipe can be single bend pipe, also can be formed by connecting by many pipes.Among Fig. 1, by swivelling union 46 will take over 44 and upper water-out bend pipe 47 connect into complete Discharging bent-tube, upper water-out bend pipe 47 can be as required rotates around the center line of swivelling union 46.Like this,, also be convenient to discover water intaking valve 41 unexpected " go up and leak ", in time get rid of, stop Lou except utilizing washing hand to the water tank water-filling.
7., for ease of safeguarding that water intaking valve is installed in top:
8.,, use recyclable materials, as metal, plastics, glass for environmental protection and energy-conservation more.
Except pottery, outer water tank 1 and tank lid 41 can preferentially be selected glass, stainless steel or plastics manufacturing for use; Inner water tank 21 can adopt stainless steel, plastic or other material manufacturing.
The user can do it yourself, and existing water tank is repacked into the cistern for toilet water-saving cistern of water as required, and the groundwork amount has four:
A makes the inner water tank casing with plastics or metal sheet roof covering; B accurately locatees on existing outer water tank, gets out axis hole;
C, the repacking water intaking valve: optional porcelain core water tap is transformed into water intaking valve with it.On the switch knob of water tap, extend the rod member of one section band thread, at the rod member end, adorn an about plastic water bottle of 500 milliliters by nut shim, can irritate a little water in the bottle, be beneficial to the sagging valve of opening; D transforms outer water tank.Because the lower semisection of traditional water tank, the vertical section is rectangle [or approaching the trapezoidal of rectangle], and the volume between case and the case is very big, and meeting many water levels of " eating " reduce the potential energy of washing by water.The effect of aforementioned for obtaining " its two " must be filled out transformation to this outer water tank, makes the required face of cylinder at the inner chamber of outer water tank.Material can be selected sheet plastic and be used for the light material of filling cavity, and filler can also be that polyurethane foam plastics adds the viscose agent.
The specific embodiment
Embodiment 1:
See also Fig. 1, it is the outer water tank 1 of circular arc that a rectangle and Lower Half are arranged, and the top of outer water tank 1 is provided with tank lid 31, and tank lid 31 is made the parts of band basin 32; Inner water tank 21 is installed in the inner chamber of outer water tank 1, and on pivot center, two concentric shafts 22 passing through between outer water tank 1 and the inner water tank 21 are implemented supporting in the mode of interference fits and are connected.Have the lever hole 11 that fits into water valve 41 on the outer water tank 1; The first half at outer water tank 1 is equipped with water intaking valve 41, and water intaking valve 41 is installed in water tank outside, and lever 11 holes that lever passes outer water tank fuse the switch knob of buoyancy aid 43 with water intaking valve, and buoyancy aid 43 is fallen in the inner water tank 21; The delivery port of water intaking valve 41 is connected to one section adapter 44 of stretching to outer water tank 1 top; An operating handle 23 is housed on the inner water tank 21, and the arc groove 5 that handle 23 passes on the outer water tank 1 is fixed on the inner water tank 21.Behind inner water tank 21 water-fillings, actuating handle 23 makes that inner water tank 21 rotates, pouring just can flush toilet; Inner water tank 21 is replied turn to horizontal level, just can stop pouring; Water supply volume during by pouring rotation amplitude and reply the speed that rotates and decide.
But Figure 10 shows the cistern for toilet water-saving cistern at a kind of dual-purpose secondary water source, is applicable to the lack of water place.Be with foregoing main difference,, can directly inject inner water tank 21 to the secondary water source because it does not have tank lid.Water intaking valve 41 is fixed in the case, and the water inlet interface 45 of its gas thread is outside case.When the secondary shortage of water, can switch by valve, change by tap water supply.
Embodiment 3
Figure 11 shows a kind of Water-saving high-level water tank of crouching formula flush toilet.Need not tank lid, leak for ease of discovering unexpected going up, the delivery port design of water intaking valve 41 is above water tank, and the end of upper water-out bend pipe 47 is exactly a delivery port; By a fork 25 operation inner water tanks 21, fork 25 directly is fixed on the concentric shafts 22 of inner water tank 21; Scale mark 5 is positioned at the lower semisection of outer water tank 1.
Figure 12 shows a kind of stainless steel cistern for toilet water-saving cistern, but dual-purpose secondary water source.Interior outer water tank all uses the stainless sheet steel manufacturing.Be economical with materials, inner water tank 21 is made the oblate spheroid of flattening the back otch.On a concentric shafts, swing handle 26 is housed.Scale mark 5 is positioned at the 2nd quadrant in outer water tank 1 front.Figure 13 shows the assembly of inner water tank.Other principal characters are identical with embodiment 2.
Figure 14 shows a kind of stainless steel cistern for toilet water-saving cistern that reduces the water inlet noise.On the interior outer water tank of embodiment 4, add the tank lid 31 of band basin 32.On tank lid 31, increased by one section and utilized the quiet deflector 34 of the bright arc of wall attachment effect---allow upper water-out bend pipe 47 touch quiet deflector 34, just can show and reduce by first section flowing water current noise.Meanwhile, in the lower end of the water inlet of inner water tank 21, just the outfall of basin 32 is fixed a fiber woven belt that hangs down into inner water tank, can reduce the noise of second section flowing water.
Claims (10)
1, water-tight, the cistern for toilet water-saving cistern of water as required, comprise an outer water tank (1), gutter (11) and water intaking valve (41), it is characterized in that: a rotating inner water tank (21) is installed in the outer water tank (1), be provided with the transmission mechanism that control inner water tank (21) rotates, pivot center is located on the longitudinal axis, implements supporting by two concentric shafts (22) in the mode of interference fits between outer water tank (1) and the inner water tank (21) and is connected.
2, water-tight, the cistern for toilet water-saving cistern of water as required according to claim 1, it is characterized in that: the bottom of outer water tank (1) lower semisection inner chamber is arc-shaped curved surface (9).
3, water-tight, the cistern for toilet water-saving cistern of water as required according to claim 1, it is characterized in that: water intaking valve (41) is installed in the first half of outer water tank (1), and water intaking valve is connected to the Discharging bent-tube that reaches outer water tank (1) top.
4, according to claim 1 or 3 described water-tight, the cistern for toilet water-saving cistern of water as required, it is characterized in that: on outer water tank (1), be added with the tank lid (31) of a band basin (32), the outfall of basin (33) design is in the top of inner water tank (21).
5, according to claim 1 or 4 described water-tight, the cistern for toilet water-saving cistern of water as required, it is characterized in that: on tank lid (1), be provided with one section quiet deflector (34).
6, water-tight, the cistern for toilet water-saving cistern of water as required according to claim 1 is characterized in that: gutter (11) is one section comb stream pipe.
7, water-tight, the cistern for toilet water-saving cistern of water as required according to claim 1, it is characterized in that: on longitudinal axis, outer water tank (1) has a pair of axis hole by center line (3), two concentric shafts (22) that become interference fits with axis hole (3) are installed on the central axis of inner water tank (21), have one section arc groove (4) on the outer water tank (1), handle (23) is housed on the inner water tank (21), and the arc groove (4) that handle (23) passes on the outer water tank (1) is fixed on the inner water tank (21).
8, water-tight, the cistern for toilet water-saving cistern of water as required according to claim 1 is characterized in that: be provided with one and be used for spurring the gentle rope (27) that inner water tank rotates, gentle rope one end is fixed on the inner water tank (21), and the other end connects handle (29).
9, water-tight, the cistern for toilet water-saving cistern of water as required according to claim 1 is characterized in that: on outer water tank (1), be added with the scale mark (5) that shows water supply volume.
10, water-tight, the cistern for toilet water-saving cistern of water as required according to claim 1, it is characterized in that: water intaking valve is Ceramic core valve (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610131950 CN1932175A (en) | 2006-10-12 | 2006-10-12 | Non-leaking water-saving cistern according to requirement water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610131950 CN1932175A (en) | 2006-10-12 | 2006-10-12 | Non-leaking water-saving cistern according to requirement water |
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| Publication Number | Publication Date |
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| CN1932175A true CN1932175A (en) | 2007-03-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200610131950 Pending CN1932175A (en) | 2006-10-12 | 2006-10-12 | Non-leaking water-saving cistern according to requirement water |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101849070B (en) * | 2007-09-24 | 2011-12-14 | 麦特佛莱斯有限公司 | A cistern assembly |
| CN103781977A (en) * | 2011-07-25 | 2014-05-07 | 曼特弗拉斯私人有限公司 | A cistern assembly |
-
2006
- 2006-10-12 CN CN 200610131950 patent/CN1932175A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101849070B (en) * | 2007-09-24 | 2011-12-14 | 麦特佛莱斯有限公司 | A cistern assembly |
| CN103781977A (en) * | 2011-07-25 | 2014-05-07 | 曼特弗拉斯私人有限公司 | A cistern assembly |
| CN103781977B (en) * | 2011-07-25 | 2016-01-20 | 曼特弗拉斯私人有限公司 | Cistern assembly |
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Open date: 20070321 |