CN101454170B - Anti siphon tank inlet - Google Patents
Anti siphon tank inlet Download PDFInfo
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- CN101454170B CN101454170B CN200780019610.4A CN200780019610A CN101454170B CN 101454170 B CN101454170 B CN 101454170B CN 200780019610 A CN200780019610 A CN 200780019610A CN 101454170 B CN101454170 B CN 101454170B
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- inlet pipe
- fluid tank
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Abstract
A fluid tank inlet assembly comprises an inlet pipe (5) extending from a mounting structure (2) located at its proximal end. A float valve assembly (7) is disposed beyond the distal end of the inlet pipe (5) and includes a float member (6). An obstruction is located within a housing (22) between the inlet pipe (5) and the float member (6). The obstruction (21) blocks line of sight from the inlet pipe (5) to the float member (6), but a flow path (23) is defined between the obstruction (21) and the housing wall to allow fluid flow to the float valve assembly (7) around the obstruction (21).
Description
Technical field
The present invention relates to for the entrance member such as the fluid tank of vehicle fuel tank.Particularly, the present invention relates to a kind of for backsiphonage (anti-siphon) entrance member such as the fluid tank of vehicle fuel tank.
Background technology
By the Fuel Tank from vehicle, particularly from the Fuel Tank siphon of commercial self-propelled vehicle and to steal fuel be the problem of generally acknowledging.Usually be equipped with lockable Fuel Tank filling cap to vehicle, to prevent without approval near tank inlet spare.Yet, because the fuel filling cap is come-at-able, so its be easy to be damaged (tampering), and often opened by firm thief forced.In addition, it is always not practicable to be equipped with lockable fuel filling cap to vehicle.
This problem has been proposed suggestion in the prior art, that is, provide to prevent that siphon is inserted into the fluid tank inlet pipe combinatorial construction in the case.
For example, U.S. Patent No. 3,951,297 disclose a kind of antisyphonage pipe fluid tank intake assembly, and it comprises tubular inlet spare main body, and this tubular inlet spare main body in use is fixed to normal tank inlet spare, so that its far-end extends short range in case.Tubular inlet spare is designed to hold common fuel dispensing nozzle.Cylindrical-conical guard member is located at the open distal end place of tubular inlet spare, so that limit annular gap between the inside of conical member and tubular body, thereby allows fuel to flow in the case from dispenser nozzle.Air extractor vent is located in the tubular inlet spare of adjacent tank entrance member, escapes from case to allow air/gas when the filling box.Described conical guard member is set passes tubular inlet spare and is inserted into the case below to prevent that siphon from inserting.The problem of this simple device be when fuel level when the height of the distal portion of tubular inlet spare is above, still can be from case siphon fuel.Although tubular body can only extend relatively little distance in case, for example, about 20cm magnitude, this still comes out the fuel of suitable volume.
Suggestion to the problems referred to above is the backsiphonage intake assembly that is provided with the float valve that for example is disclosed in the applicant's same unsettled same unsettled GB application number GB0322594.This backsiphonage intake assembly has the float valve of the inner (far-end) that is located at inlet pipe.Float valve comprises ball float, described ball float is retained in by in the float chamber of perforate (or cage), and when the fuel level in the case is above in the end of inlet pipe, the valve seat that described ball float is located against the end that is limited to inlet pipe, thus prevent that fuel from flowing back to by pipe.Grid (grill) is contained in the inlet pipe of valve seat top, is used to make by force ball valve away from its valve seat to prevent siphon.If the fuel level in the case is positioned at below the end of inlet pipe, then ball valve will fall down away from its position simply, thereby allows fuel flow by the hole in the float chamber.Yet grid will prevent that siphon is inserted in the fuel.When fuel level was above in the end of inlet pipe, fuel still can pass through float valve in the pressure current downflow that comes from distributing nozzle.Utilize this assembly, be merely able to siphon and may be present in the interior fuel of inlet pipe itself.Air extractor vent is located in the inlet pipe towards the upper end to the pipe at tank inlet place, but is provided in a side of the usually At The Height more than the maximum fill level face of case.
In addition two examples of the antisyphonage pipe intake assembly that is provided with float valve are disclosed among US Patent No. 1995007 and the French Patent (FRP) FR2534888.
In some cases, can will be inserted in the intake assembly such as unbending length elongated rigid member wiry, and pass the grid of protection float valve assembly, to promote the floating part member away from its position.The horizontal surface place siphon above water of grid that if so, then can be in inlet pipe goes out any fuel.An object of the present invention is to arrange a kind of fluid tank intake assembly, described fluid tank intake assembly is eliminated or is alleviated this potential problem.
Summary of the invention
According to a first aspect of the invention, provide a kind of fluid tank intake assembly, having comprised:
Inlet pipe, described inlet pipe extends from the mounting structure that is positioned at its near-end;
Float valve assembly, it is located at outside the far-end of described inlet pipe, and comprises unsteady member;
Type of tamper evidence, it is positioned at housing, and is arranged between described inlet pipe and the described unsteady member;
Wherein said type of tamper evidence is blocked boresight or the sight line from described inlet pipe to described unsteady member; And
Wherein between described type of tamper evidence and housing wall, limit flow path, flow to described float valve assembly to allow fluid around described type of tamper evidence.
Type of tamper evidence prevents from anyly straight can easily arriving described float valve by the rigid member that entrance member inserts.
Type of tamper evidence is preferably formed as so that flow path is ring-type.Annular flow path can have the identical radial width around type of tamper evidence (on any given plane perpendicular to the axis of housing), and perhaps its radial width can change around type of tamper evidence.Similarly, annular flow path can have along the constant radial width of the length of housing, perhaps for example can have to change to peaked radial width from minimum value, and this depends on the geometric configuration of inside face of housing and the geometric configuration of type of tamper evidence.
Type of tamper evidence preferably has streamlined outer surface, to promote the free-flowing between type of tamper evidence and the shell inner surface.For example, the diameter of type of tamper evidence can be increased to maximum gauge from its near-end, and then the far-end towards type of tamper evidence reduces again.For example, type of tamper evidence can be egg type haply.
Intake assembly preferably further comprises wheel rim, lug (ledge), lip shape section (lip) or analogue, they be limited to inner walls around, or be limited to the entrance of float valve, the below of the maximum gauge section of type of tamper evidence.This prevents that basically flexible member from walking around type of tamper evidence and inserting.
For example, in a preferred embodiment of the invention, the cyclic rings that the wheel cause has centre hole and radial width provides, and is provided with diameter less than the circumference array of the axial drilling of radial width, to allow the fuel flow mistake.Preferably, ring has the annular channel that is limited in its radial width, and the upstream open of described boring is limited in the described annular channel.Ring is preferably detachable component, is fixed to the bottom of housing by screw thread or analogue above the flow valve chamber inlet.
Preferably, be located at inherent the first type of tamper evidence of inlet pipe top such as the second type of tamper evidence of the baffle plate of grid or perforate, or be located in the housing or to the entrance of float valve below the first type of tamper evidence, allowing Fluid Flow in A, but prevent that siphon from passing through.
In a preferred embodiment of the invention, the annulus of inlet pipe has the surface of inside convergent, and the surface of this inside convergent turns to the end of any slender member that is inserted into inlet pipe, makes it away from the inwall of pipe and towards described type of tamper evidence.The surface of convergent can for example be provided by the separable ring (described in aforementioned paragraphs, preferably above the second type of tamper evidence) that is installed in the inlet pipe.
Float valve can be included in the interior floating part that (trap) is set of float chamber of opening, the valve seat cooperation of the float chamber of described opening and contiguous housing.Preferably, float valve chamber is cylindrical shape haply, and comprises a plurality of fluid flow channels axial arranged with respect to inlet pipe.Floating part can be preferably ball float.
According to a second aspect of the invention, a kind of backsiphonage fluid tank intake assembly is provided, it comprises inlet pipe, described inlet pipe has inhibition or prevents siphon insertion case but the structure of permission Fluid Flow in A, and described backsiphonage fluid tank intake assembly is provided with interior ring flange, described interior ring flange limits opening with the containing fluid distributing nozzle, and has a. g. between described ring flange and described fluid dispensing nozzle.Intake assembly can for example have feature according to a first aspect of the invention.
To understand other preferred feature of the present invention from following explanation.
Description of drawings
Below only be the example purpose, by the example explanation specific embodiments of the invention of reference accompanying drawing.
Fig. 1 is the axial cross section scheme drawing of embodiment with a first aspect of the present invention of float valve;
Fig. 2 is the photo of the embodiment of first aspect present invention;
Fig. 3 is the photo that removes the embodiment of the Fig. 2 in the situation of float valve;
Fig. 4 is the axial cross section scheme drawing of modification of the equipment of Fig. 1 according to still another embodiment of the invention;
Fig. 5 a and 5b show the parts of the equipment of Fig. 6;
Fig. 6 a and Fig. 6 b show another parts of the equipment of Fig. 6; And
Fig. 7 is the scheme drawing of the embodiment of a second aspect of the present invention.
The specific embodiment
With reference to Fig. 1, comprise main body or the inlet pipe 5 that is essentially straight line for the fluid intake assembly 1 that is coupled to fluid tank 10, connecting device or mounting structure 2 in the proximal end of described fluid intake assembly 1, with grid or baffle plate 3, described grid or baffle plate 3 allow flow of liquid by pipe 5, but block siphonal passage at its far-end.Grid 3 comprises the metal sheet that is provided with a plurality of fuel outlets hole 3a, and the inner width that described grid 3 crossed pipe 5 is connected firmly.
The pipe 5 of assembly and grid 3 are similar to disclosed pipe and grid among the applicant's same pending application GB0322594 and the PCT/GB2005/004259.Be set to the mounting structure 2 for the ingate 11 that assembly is connected to Fuel Tank 10, be similar to the mounting structure among the PCT/GB2005/004259, but can be any suitable form.
Among the embodiment in Fig. 1, intake assembly also comprises float valve, and described float valve comprises the float ball 6 that remains in the float cage 7.Float ball is spherical hollow plastics ball.Therefore, float valve is arranged to allow float ball 6 can move to make position from open position (as shown in fig. 1) along the longitudinal axis of assembly, and in this make position, when fuel is elevated to the far-end of assembly when above, ball is held against valve seat 8.Float valve can be for example substantially the same with the float valve shown in GB0322594 and the PCT/GB2005/004259, perhaps can be any other form.
Desired is when float valve is closed, still can be with more fuel filling box when the buoyancy that overcomes valve when the fuel pressure that enters case is opened valve.
According to the present invention, except inlet pipe 5 and float valve assembly 7, intake assembly 1 according to the present invention also comprises end and the device of the anti-tamper (anti-tamper) between the float valve cage 7 20 that is arranged on inlet pipe 5.Anti-tamper means 20 comprises the type of tamper evidence 21 that is positioned at housing 22, and described type of tamper evidence 21 is configured to prevent that elongated rigid member is inserted into float valve by inlet pipe 5 and the hole 3a by grid 3 and moves the member 6 that floats.Type of tamper evidence 21 has two cone shape, so that its cross-sectional plane is essentially rhombus as shown in fig. 1.Housing 22 has and is into haply bowl-shape inside radius, to hold type of tamper evidence 21, keeps simultaneously annular flow path 23, and fuel can flow between the inwall of type of tamper evidence 21 and housing 22 by this cyclic path 23, with the arrival float valve, as shown by arrow A.The maximum dimension D of type of tamper evidence 21 is greater than the diameter of the open end of inlet pipe 5 and the arrival end of float valve cage 7 (at valve seat 8 places) so that from inlet pipe 5 through type of tamper evidence 21 to float valve member 6 do not direct pointing line or sight line.This prevents that straight rigid member is inserted through inlet pipe 5, pass hole 3a, and enter in the float cage 7, and the mobile member 6 that floats is away from valve seat 8.
In addition, housing 22 is provided with inner annular lip 24, described annular lip 24 is limited by the inwall of the bottom (more than the maximum gauge section of type of tamper evidence 21) of the circumscribed type of tamper evidence 21 of housing 22, and the diameter of interior annular lip 24 is less than the maximum diameter d of type of tamper evidence 21.This prevents flexible elongate member basically, passes inlet pipe 5 such as relatively thick but deformable metal filament and walks around type of tamper evidence 21 insertion float valves.This be because the insertion end that type of tamper evidence 21 makes this wire member will on outward direction towards the inner wall deformation of housing 22.Then further insertion wiry makes insertion end wiry go along the profile of the inside of housing 22, until lip shape section 24 stumbles end wiry, and prevents that it further is inserted in the float valve chamber.
Select the inwall of housing 22 and the relative size of type of tamper evidence 21, with the radial width of the guaranteeing annular gap 23 fuel dispensing rate of adaptive expectation fully.
The interior profile of the outline of type of tamper evidence 21 and housing 22 can be from graphic different.The facility of graphic contoured is: for the trial of any damage float valve assembly provides necessary obstruction, simultaneously sufficient " stream line pattern ground ", with permission fuel in receivable filling speed current downflow.Yet as those skilled in the art recognized, other section also was fine.For example, type of tamper evidence 21 need not have graphic pair of cone shape.For example, simple vertebral body (and summit sensing float valve assembly) although turbulent flow is incorporated in the Fluid Flow in A, and turbulent flow can limit undesirably can realize maximum filling speed, still can be used as the effective obstruction to damage.Similarly, type of tamper evidence can have vertical cone shape, and summit sensing grid 3, although this also will provide the obstruction to damaging in addition in some turbulent flows of housing 22 interior generations obstruction Fluid Flow in As.Type of tamper evidence can be spherical, oval egg shape alternatively, the perhaps combination of the part of any aforementioned shapes.Type of tamper evidence 21 even can be that its diameter extends circular discoid or the analogue that crosses housing width 22.This will also provide necessary obstruction to damage, but be not to be preferred shape aspect the permission high-speed filling speed.
The maximum gauge of type of tamper evidence 21 can be different from graphic type of tamper evidence, as long as it is arranged to prevent that any line of directing pointing from arriving in the float valve chamber 7 by inlet pipe 5.For example, in some embodiments of the invention, can be less than the diameter of the open end of tubular bulb 5 to the diameter of the entrance of float valve chamber 7, in this case, if the maximum gauge of type of tamper evidence 21 greater than the diameter to the entrance of float chamber, then will be realized the effect of necessity.Similarly, if the diameter of the open end of inlet pipe 5 less than the diameter of the arrival end of float chamber 7, then the maximum gauge of type of tamper evidence 21 only need to be greater than the diameter of the open end of inlet pipe 5.Yet preferably, the maximum gauge of type of tamper evidence 21 is greater than the diameter (as shown in the figure) of the opening arrival end of the diameter of the open end far-end of inlet pipe 5 and float chamber 7.
In graphic example, inlet pipe 5, anti-tamper means 20 and float valve assembly 7 are separable parts, and these separable parts can be threaded mutually.This allows simple the manufacturing and assembling.In addition, type of tamper evidence 21 for example directly is installed to grid 3 by screw thread.In arranging alternatively, type of tamper evidence 21 can directly be supported by housing 22, for example by the minor diameter support member support of the inwall that extends to housing 22 from type of tamper evidence 21.Other possible mounting arrangements is apparent to one skilled in the art.
In illustrated embodiment, grid 3a is positioned at the inlet pipe 5 of type of tamper evidence 21 tops.In optional embodiment, grid 3a can be positioned at the below of type of tamper evidence 21.For example, type of tamper evidence 21 can be arranged in the inlet pipe of modification.
In another possible embodiment of the present invention, can whole omission grid 3.Yet grid 3 or similar protector are preferably the flexible siphon of restriction may insert by type of tamper evidence 21.Yet grid 3 can have a variety of different forms.
The modification of the embodiment of Fig. 1 is shown in Figure 4.This embodiment is similar to the embodiment of Fig. 1, and therefore identical Reference numeral is for the parts of determining the correspondence that Fig. 1 uses.The embodiment of Fig. 4 and the embodiment of Fig. 1 are different aspect following.
The first, the cyclic rings 50 (shown in Fig. 5 a and the 5b) with inside convergent inside radius is positioned at the just in time bottom of the tubular body above grid 35.Ring 50 can be made as the detachable component that threadably is fixed in the main body 5 expediently.Ring 50 is as any metal filament of being pushed through tubular body or the end of analogue are turned to towards type of tamper evidence 21.For example, if harder metal filament slides along the inside face of tubular body 5, in order to slide it in the outside around type of tamper evidence 21, the convergent inside radius of ring 50 will make end wiry radially inwardly and away from the annular gap around type of tamper evidence 21.Therefore, this provides the further protection to damaging.
The second, type of tamper evidence 21a has the geometric configuration different from the type of tamper evidence 21 of the embodiment of Fig. 1.Particularly, type of tamper evidence 21 have cut down end be haply the shape of egg type.Type of tamper evidence 21 hangs from grid 3 by thread rod 21a, and described thread rod 21a screw thread is in the tapped bore that is located in the grid 3.Type of tamper evidence 21a is arranged in the housing 22a of modification, and the housing 22a of described modification has the right cylindrical shape, rather than the bowl shape of the housing 22 of Fig. 1.The maximum gauge of type of tamper evidence 21a is greater than ring 50 internal diameter, therefore stops up from inlet pipe 5 to float valve 7 boresight.
The 3rd, interior annular lip 24 is substituted by ring 25 (as shown in Fig. 6 a and 6b), and ring 52 is made as the detachable component that is threaded onto in the housing 22 expediently.With reference to Fig. 6 and Fig. 7, ring 52 limits annular channel between the upright circumferential wall part 54 and 55 of radial outside and inboard. Wall section 54 and 55 inserts float valve chamber 7 with the mode effect roughly the same with the lip shape section 24 of the embodiment of Fig. 1 with the end that prevents metal filament or analogue.In order to minimize the interference of fluid flow, be equipped with the perforation boring 56 of circumference array, this connects boring 56 openings to passage 53, to allow fuel flow, stops up simultaneously and may insert the interior any metal filament of annular channel 23 or the end of analogue.Ring 52 internal diameter is less than the maximum diameter d of type of tamper evidence 21a, further blocks from inlet pipe 5 to valve chamber 7 boresight.
For graphic embodiments of the invention among Fig. 4, the diameter of the open end of inlet pipe 5 is limited by ring 52 internal diameter, and is effectively limited by the internal diameter that encircles 52 to the diameter of the opening of valve module 7.
Will be appreciated that incorporating in the embodiments of the invention that ring 50 and ring 52 can be separate.Yet, a preferred embodiment coupling collar 50 of the present invention, grid 3, type of tamper evidence 21 as shown in Figure 6 and encircle 52, so that the backsiphonage device to be provided, this backsiphonage device in test, demonstrated prevent aspect the damage very effective.
Another character of innovation of intake assembly shown in Fig. 4 is the interior ring flange 30 that arranges towards the arrival end of tubular body 5.Ring flange 30 limits the circular open of sufficient size, fills distributing box to hold conventional fuel, stays little a. g. simultaneously between the radially inward edge of distributing box and flange 30.In the time of in fuel is distributed to entrance, flange 30 is very effectively as the protector that prevents from reflecting back (splashback).Gap between flange 30 and the dispenser nozzle guarantees that sufficient air can escape, to allow effectively filling fuel case.
It is independent aspects of the present invention that interior ring flange 30 is set, this independent aspects can be included in for example do not comprise anti-tamper means 20 or even other entrance member design of float valve assembly in.For example, illustrate this embodiment of the present invention among Fig. 7.Fig. 7 shows relatively short intake assembly, and this intake assembly comprises the tubular member 40 of the inlet pipe 5 of the embodiment that is similar to Fig. 1, except it is additionally provided with flow orifice to allow sufficient fuel flow to pass through entrance member.In the situation that the ring flange 30 that reflects back protection is not provided, must provide longer inlet pipe, take the degree guaranteeing when the filling box to splash back out from entrance member as acceptable.This is with particularly troublesome in the backsiphonage device, and the backsiphonage device must prevent some obstructions to the Fluid Flow in A in case really, thereby fluid can be gushed out in intake assembly.Shorten the length of the entrance member of grid 3 tops, its advantage is that the volume of the fuel that can siphon goes out reduces, because only with the fuel of siphon grizzly level face top.
Claims (27)
1. fluid tank intake assembly comprises:
Inlet pipe (1), described inlet pipe extends from the mounting structure that is positioned at its near-end;
Float valve assembly, it is located at outside the far-end of described inlet pipe (1), and comprises unsteady member (6);
The first type of tamper evidence (21), its be positioned at housing (22) and be arranged on described inlet pipe (1) and described unsteady member (6) between;
It is characterized in that any direct boresight of described the first type of tamper evidence (21) obstruction from described inlet pipe (1) to described unsteady member (6); And
Wherein between described the first type of tamper evidence (21) and housing wall, limit flow path, flow to described float valve assembly to allow fluid around described the first type of tamper evidence (21).
2. fluid tank intake assembly according to claim 1, wherein said flow path (23) is the annular flow path around described the first type of tamper evidence (21).
3. fluid tank intake assembly according to claim 2, the radial width of wherein said annular flow path (23) changes along the axial length of described housing (22), namely, reduce towards minimum value from the described near-end of described housing (22), then increase from the described far-end of described minimum value towards described housing (22).
4. according to the described fluid tank intake assembly of aforementioned each claim, wherein said the first type of tamper evidence (21) is blocked the boresight from the opening of the described near-end of described inlet pipe (1) to described unsteady member (6).
5. each described fluid tank intake assembly according to claim 1-3, wherein said the first type of tamper evidence (21) block the boresight from the opening of the described far-end of described inlet pipe (1) to described unsteady member (6).
6. fluid tank intake assembly according to claim 1, the described opening of the near-end of wherein said inlet pipe and/or far-end is limited by annular component, described annular component is positioned at the separately end of described inlet pipe (1), or is positioned near the separately end of described inlet pipe (1).
7. fluid tank intake assembly according to claim 1, wherein annular flange, lug, lip shape section (24) are limited to the periphery of inner wall of described housing (22) in the maximum gauge section of described the first type of tamper evidence (21) and the position between the described float valve assembly.
8. fluid tank intake assembly according to claim 7, wherein taking turns cause has and allows fluid to flow to the centre hole of described float valve assembly and the cyclic rings of radial width (52) provides, and be provided with the axial drilling (56) of circumference array, the diameter of described axial drilling is less than described radial width, to allow flow through described axial drilling.
9. fluid tank intake assembly according to claim 8, wherein said ring (52) have the annular channel (53) that is limited in its radial width, and the upstream open of described boring (56) is limited in the described annular channel (53).
10. according to claim 8 or 9 described fluid tank intake assemblies, wherein said ring (52) or limited or by limiting at the described float valve assembly around the opening of described float valve assembly by the inwall of described housing (22) is perhaps provided by the detachable component that is fixed to described housing (22) or is fixed to described float valve assembly.
11. fluid tank intake assembly according to claim 1, wherein said float valve assembly comprises the described unsteady member (6) that remains in the float chamber (7), the ring-type valve seat (8) that is limited to the entrance of described float chamber (7), and described valve seat (8) is limited to the opening of described float valve assembly, and fluid is from described housing (22) the described opening of flowing through.
12. fluid tank intake assembly according to claim 1, the annular surface (51) that comprises inside convergent, the annular surface of described inside convergent be limited to described inlet pipe (1) the distal openings place or near, and the restriction opening, described fluid flows to described housing (22) from described inlet pipe (1) by described opening.
13. fluid tank intake assembly according to claim 12, wherein said tapered surface (51) by in the distal openings that is fixed on described inlet pipe (1) or near ring (50) limit.
14. fluid tank intake assembly according to claim 1, the extension of wherein said housing (22) or described inlet pipe (1), or the extension of described float valve assembly, or be connected to separate part between described inlet pipe (1) and the described float valve assembly.
15. fluid tank intake assembly according to claim 1, the internal diameter of wherein said housing (22) is increased to maximum gauge section from its near-end, and then again is reduced to its far-end.
16. fluid tank intake assembly according to claim 15, the maximum inner diameter of wherein said housing (22) is greater than the diameter at the opening of the described far-end of described inlet pipe (1), and/or at the diameter of the opening of the described proximal end of described float valve assembly.
17. fluid tank intake assembly according to claim 1, the described inwall of wherein said housing (22) are cylindrical shape haply, and the diameter that has substantial constant along its length.
18. fluid tank intake assembly according to claim 1, wherein said the first type of tamper evidence (21) has streamlined outer surface, with the Fluid Flow in A between the inwall that promotes described the first type of tamper evidence and described housing.
19. fluid tank intake assembly according to claim 1, the diameter of wherein said the first type of tamper evidence (21) is increased to the maximum gauge section of described the first type of tamper evidence from the near-end of described the first type of tamper evidence, then is reduced to the far-end of described the first type of tamper evidence from described maximum gauge section.
20. having, fluid tank intake assembly according to claim 19, wherein said the first type of tamper evidence (21) be haply avette geometric configuration.
21. having, fluid tank intake assembly according to claim 19, wherein said the first type of tamper evidence (21) be haply the geometric configuration of egg type.
22. fluid tank intake assembly according to claim 19, wherein said the first type of tamper evidence (21) has the geometric configuration of bicone.
23. fluid tank intake assembly according to claim 1 wherein intercepts on the plane perpendicular to the axis of described housing, described the first type of tamper evidence (21) has the cross-sectional plane that is essentially circular.
24. fluid tank intake assembly according to claim 1 further comprises the second type of tamper evidence (3) that is located in the described inlet pipe (1).
25. fluid tank intake assembly according to claim 1 further comprises the second type of tamper evidence that is located at inherent described the first type of tamper evidence of described housing (22) (21) below.
26. according to claim 24 or 25 described fluid tank intake assemblies, wherein said the second type of tamper evidence (3) is the baffle plate of grid or perforate, and the baffle plate of described grid or perforate is configured to prevent that siphon from passing through but allow the fluid free-flowing.
27. fluid tank intake assembly according to claim 1, wherein interior ring flange (30) be located at described inlet pipe (1) the open proximal place or near, and described ring flange (30) limits opening, with the reception fluid dispensing nozzle, and between described ring flange and described fluid dispensing nozzle, has a. g..
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0606126A GB0606126D0 (en) | 2006-03-28 | 2006-03-28 | Anti siphon tank inlet |
| GB0606126.1 | 2006-03-28 | ||
| GB0615142.7 | 2006-07-29 | ||
| GB0615142A GB0615142D0 (en) | 2006-07-29 | 2006-07-29 | Anti siphon tank inlet |
| PCT/GB2007/001126 WO2007110640A1 (en) | 2006-03-28 | 2007-03-28 | Anti siphon tank inlet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101454170A CN101454170A (en) | 2009-06-10 |
| CN101454170B true CN101454170B (en) | 2013-01-30 |
Family
ID=36384279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200780019610.4A Active CN101454170B (en) | 2006-03-28 | 2007-03-28 | Anti siphon tank inlet |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101454170B (en) |
| GB (1) | GB0606126D0 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL3164287T3 (en) * | 2014-07-04 | 2019-02-28 | Lago Accessori S.R.L. | Anti-siphoning device, particularly for preventing the extraction of fuel from tanks |
| CN104477026B (en) * | 2015-01-19 | 2016-12-07 | 南通市巨力弹簧吊架有限公司 | A kind of automotive oil tank |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1922930A (en) * | 1932-09-23 | 1933-08-15 | John M G Darms | Gas keeper |
| US1995007A (en) * | 1934-07-12 | 1935-03-19 | Thomas L Myers | Theft preventer for gasoline tanks |
| US3951297A (en) * | 1974-05-06 | 1976-04-20 | Carlos A. Riquelme | Anti-siphon gas tank adaptor |
| GB2117492A (en) * | 1982-03-27 | 1983-10-12 | Vincent Debowski | Fuel control valve for vehicles |
| FR2534888A1 (en) * | 1982-10-25 | 1984-04-27 | Guigand Yvon | Anti-theft device with spherical float associated with the filler pipe of a tank |
| CN2398130Y (en) * | 1999-11-19 | 2000-09-27 | 黄永玉 | Automatic fuel tank cover |
| GB2406333A (en) * | 2003-09-26 | 2005-03-30 | Tiss Ltd | Anti-siphon tank inlet |
-
2006
- 2006-03-28 GB GB0606126A patent/GB0606126D0/en not_active Ceased
-
2007
- 2007-03-28 CN CN200780019610.4A patent/CN101454170B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1922930A (en) * | 1932-09-23 | 1933-08-15 | John M G Darms | Gas keeper |
| US1995007A (en) * | 1934-07-12 | 1935-03-19 | Thomas L Myers | Theft preventer for gasoline tanks |
| US3951297A (en) * | 1974-05-06 | 1976-04-20 | Carlos A. Riquelme | Anti-siphon gas tank adaptor |
| GB2117492A (en) * | 1982-03-27 | 1983-10-12 | Vincent Debowski | Fuel control valve for vehicles |
| FR2534888A1 (en) * | 1982-10-25 | 1984-04-27 | Guigand Yvon | Anti-theft device with spherical float associated with the filler pipe of a tank |
| CN2398130Y (en) * | 1999-11-19 | 2000-09-27 | 黄永玉 | Automatic fuel tank cover |
| GB2406333A (en) * | 2003-09-26 | 2005-03-30 | Tiss Ltd | Anti-siphon tank inlet |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101454170A (en) | 2009-06-10 |
| GB0606126D0 (en) | 2006-05-03 |
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