CA2003019A1 - Conduit isolating gate system - Google Patents
Conduit isolating gate systemInfo
- Publication number
- CA2003019A1 CA2003019A1 CA 2003019 CA2003019A CA2003019A1 CA 2003019 A1 CA2003019 A1 CA 2003019A1 CA 2003019 CA2003019 CA 2003019 CA 2003019 A CA2003019 A CA 2003019A CA 2003019 A1 CA2003019 A1 CA 2003019A1
- Authority
- CA
- Canada
- Prior art keywords
- gate
- conduit
- conduits
- translating
- axis
- 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.)
- Abandoned
Links
- 239000012530 fluid Substances 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims 1
- 239000010808 liquid waste Substances 0.000 abstract description 15
- 241000196324 Embryophyta Species 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 238000002955 isolation Methods 0.000 description 2
- VOXZDWNPVJITMN-ZBRFXRBCSA-N 17β-estradiol Chemical compound OC1=CC=C2[C@H]3CC[C@](C)([C@H](CC4)O)[C@@H]4[C@@H]3CCC2=C1 VOXZDWNPVJITMN-ZBRFXRBCSA-N 0.000 description 1
- 244000187656 Eucalyptus cornuta Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A gate system is installed at the intersection of three conduits in a liquid waste treatment plant. The three conduits include a vertical and cylindrical pipe conduit and two horizontal conduits. The system comprises a semicylindrical gate of which the geometrical axis coincides with the longitudinal axis of the vertical pipe conduit and of which the radius is equal to that of the latter conduit. In a first angular position, the gate can be translated along the above mentioned longitudinal axis and toward the vertical conduit to isolate a first one of the horizontal conduits, while in a second angular position it can be translated to isolate the other one of these horizontal conduits.
Translation of the gate also enables re-establishment of the interconnection between the three conduits at their intersection.
A gate system is installed at the intersection of three conduits in a liquid waste treatment plant. The three conduits include a vertical and cylindrical pipe conduit and two horizontal conduits. The system comprises a semicylindrical gate of which the geometrical axis coincides with the longitudinal axis of the vertical pipe conduit and of which the radius is equal to that of the latter conduit. In a first angular position, the gate can be translated along the above mentioned longitudinal axis and toward the vertical conduit to isolate a first one of the horizontal conduits, while in a second angular position it can be translated to isolate the other one of these horizontal conduits.
Translation of the gate also enables re-establishment of the interconnection between the three conduits at their intersection.
Description
2~1)3~
CONDUIT ISOLA~I~G G~T~ SYSTEN
BACKGROUND OF THE INVENTION
1. Field of the invention:
The present invention relates to a gate system capable of isolating, at the intersection of a group of three conduits, either one of a pair of these conduits. Interconnection between the three conduits at their intersection can be re-established at will.
2. Brief description of the ~rior art:
In certain liquid waste treatment plants prssently in operation, the liquid waste is supplied to the plant through an underground, generally vertical pipe conduit. The so supplied liquid waste is received by a pair of parallel and upwardly open horizontal conduits conducting the liquid waste toward treatment eguipments. Maintenance of the latter equipments and of the horizontal conduits themselves requires periodic isolation thereof from the vertical pipe conduit. This is actually carried out by means of suitable gates; one gate is required for each conduit in the existing installations.
Another drawback of these gates is that they are permanently immersed in the liquid waste whereby maintenance thereof is very troublesome.
Replacement of the prior art gates by suitable valves can be envisaged. For example, interconnection of the pipe conduit with the two . ' ' ' .
: - ' .
2~ 3~ ~
horizontal conduits through a swiny valve such as that illustrated and described in United States patent 2,516,510 ~FANTZ) issued on July 25, 1950, would allow isolation of either one of the horizontal conduits. However, such a valve would not enable re-establishment of the interconnection between the three conduits. Again, this valve would be permanently immersed in the liquid waste thereby causing troublesome maintenance.
O~JECT OF THE INVENTION
The main object of the present inv ntion is therefore to eliminate the above discussed drawbacks of the prior art.
SUMMARY OF THE INVENTION
More specifically, the subject invention is concerned with a gate system mounted at an intersection of three conduits whose function is to conduct a fluid substance. The gate system comprises means for isolating first and second one of these conduits from each other whereby no fluid substance can be transfered from the first conduit to the second one, and vice versa. The conduits isolating means comprises ~a) a gate that can be translated along a give axis, and ~b) means for translating this gate alonq the latter axis to a position in which the gate isolates the first and second conduits from each other.
When the first conduit is a cylindrical pipe conduit having a longitudinal axis parallel to 2q~
the above mentioned given axis, the gate is semicylindrical and has a geometrical axis coinciding with the longitu~inal axis of the pipe condui~, and the gate translating means comprises means for placing the semicylindrical gate either in first and second angular posi~ions wi~h respect to tha geometrical axis o~ the gate. In its first angular position, the gate can be translated along the said given axis to the position in which the gate isolates the cylindrical pipe conduit and the second conduit from each other. In its second anqular position, the gate can be translated into a position in which the gate isolates the cylindrical pipe conduit and the third one of the co~duits from each other.
Advantageously, the gate translating means comprises means for translating the gate to position in which interconnection between the three conduits at their in~ersection is re-established, and in which the gate is outside the fluid substance.
Accordingly, in the gate system of the invention (a) a simple gate is capable of isolating either one of two conduits in the group of three interconnected conduits, (b~ interconnection of the three conduits at their intersection can be re~
established by appropriately translating the single gate, and (c) the yate can be positioned outside the fluid substance to make maintenance thereof easier.
The objects, advantages and other features of the present invention will become more apparent upon reading of the ~ollowing non restrictive description o~ a preferred embodiment t~ereo~, given by way of example only in conjunction with the accompanying drawings.
BRIEF DESCRIPTION OF THE D~WINGS
In the appended drawings:
Figure 1 is a plan view of an intersection between three conduits in a plant for the treatment of liquid waste;
Figure 2 is a partially cross sectional, side elevation view of a gate system in accordance with the invention, including a semicylindrical gate;
and Figure 3 is a top cross sectional view, taken along axis A-A of Figure 2, of the semicylindrical gate of the system of Figure 2.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Although the present invention is described hereinafter in conjunction with a liquid waste treatment plant, it should be pointed out that the gate system of the invention is not limited to this particular application.
Referring now to Figures 1, 2 and 3 of the appended drawings, liquid waste is supplied to the treatment plant through a first vertical conduit 1, namely a cylindrical pipe conduit, as shown by the arrow 2 (Figure 2). The liquid waste from the first conduit 1 is supplied to sacond and third conduits 3 2~30~3 and ~ (Figure 1) respectively ~orming part of t~o parallel and similar liquid waste circuits. The liquid waste in the cQnduits 3 and 4 is conducted toward liquid waste treatment equipments (not shown~.
The direction of flow in the conduits 3 and 4 is indicated by the arrows 5 and 6, respectively.
The conduits 3 and 4 are generally horiæontal, that is perpendicular to the pipe conduit 1, they are formed into tha concrete 7 of the plant, and they open upwardly.
Two vertical and coplanar walls 8 and 9 are partially embedded into the surrounding concrete and are interposed between the conduits 3 and 4. The walls 8 and 9 are situated at the ~ree upper end of the pipe conduit 1 on the respective side~ of this vertical conduit l; the walls 8 and 9 have therefore diametrically opposed ends parallel to the longitudinal axis o~ the conduit 1. The walls 8 and 9 are made of steel covered by a layer of rubber for corrosion protection purposes; indeed the latter walls are permanently immersed into the liquid waste and are therefore likely to corrode.
The gate system comprises a fram0 structure 10 with lower portions embedded within the concrete of the floor of the plant or otherwise fixed to this floor. The structure 10 comprises an horizontal upper portion including a threaded hole 11 aligned with the longitudinal axis of the pipe conduit 1.
Obviously, the design of the frame structure 10, schematically illustrated in Figure 2, is within the 2~ [13~
skill of a person familiar with the technical field of concern.
~ straight threaded rod 13 is engaged with the threaded hole 11; its longitudinal axis accordingly coincides with the longitudinal axis of the pipe conduit 1. A wheel 14 is fixedly secured to the upper end of the rod 13 to allow the operator to rotate this rod 13 about its longitudinal axis and thereby translate it along a given axis coinciding with both the longitudinal axis of the rod 13 and conduit 1.
A semicylindrical gate 15 has a geometrical axis coinciding with the abo~e mentioned given translation axis and the longitudinal axis of the rod 13 and pipe conduit 1. The coinciding geometrical axis of the semicylindrical gate, given translation axis, longitudinal axis of the rod 13~ and longitudinal axis of the pipe conduit 1 are illustrated in Figures 1 to 3 by a single axis identified by the reference numeral 12.
The gake 15 comprises an upper horizontal member 16 with a hole 17 therein to receive the lower end of the rod 13. A nut and washer assembly 18, 19 is disposed on either side of the member 16 to attach the gate 15 to the lower end of the rod 13 while enabling rotation of the gate about the axis 12. The nuts of the assemblies 18 and 19 can be pinned to the rod 13 to ensure adequate attachment of the gate 15 to the latter rod.
`- 2~0;~
The semicylindrical gate 15 further comprises a pair of elongated, diametrically opposed U-shaped guides 20 and 21 which are parallel to the axis 12 and which slide onto respective rail~ ~ormed by the con~ronting ends o~ the walls 8 and 9.
In operation, the rod 13 can be rotated through the weel 14 to translate downwardly the gate 15 along the axis 12, with the U-shaped guides 20 and 21 sliding along their respective rails. The radius of the gate 15 and that of the pipe conduit 1 are equal (Figure 3), the upper end o~ the pipe conduit 1 is tapered (Figure 2), and a rubber gasXet 22 (Figure 2) is mounted on the lower end o~ the gate 15. The gasket 22 is also tapered to fit on ~he upper end of the conduit 1 and thereby form a liquid-tight joint between the gate 15 and conduit 1. Pressure can obviously be applied on the gasket 22 through rotation o~ the wheel 14 and rod 13. The rubber covering o~ the walls 8 and 9 also ensure a certain degree of imperviousness between the guides 20 and 21 and the respective walls 8 and 9. In the illustrated example, the conduit 4 is then isolated from the pipe conduit 1 while the conduit 3 is still in communication therewith. A very interesting characteristic of the gate system according to the invention is that no obstruction to the pipe conduit 1 is caused by the gate 15 when one o~ the conduits 3 and 4 is isolated (Figure 3).
The wheel 14 can subse~uently be operated to translate upwardly the gate 15 along the axis 12 whereby interconnection between the conduits 1, 3 and 4 is re-established at their intersection.
~3~9 The gate 15 can be translated upwardly along the axis 12 until the guides 20 and 21 disengage their respec~ive rails (confronting ends of walls 8 and 9). The gate 15 can then be rotat~d on the rod 13 (see arrow 23 in Figure 3~ about the axis 12 between first and second angular positions ~80 apart from each other. In ths ~irst angular position of ths gate 15 as shown in Figure 3, the guides 20 ~o and 21 are aligned with their rail~ whereby the gate 15 can be translated downwardly to isolate conduit 4.
In the second angular position (180 apart from that of Figure 3), the guides 20 and 21 are again aligned with the rails and accordingly the gate 15 can be translated downwardly to isolat~, this time, conduit 3.
As can be appreciated, the gate system in accordance with the invention is of simple structure, it can be installed at low cost, and is very easy to operate.
Although the present invention has been described in detail in the foregoing description by way of a preferred embodiment thereof, such an embodiment can be altered at will, within the scope of the appended claims, without departing from the spirit of the invention.
CONDUIT ISOLA~I~G G~T~ SYSTEN
BACKGROUND OF THE INVENTION
1. Field of the invention:
The present invention relates to a gate system capable of isolating, at the intersection of a group of three conduits, either one of a pair of these conduits. Interconnection between the three conduits at their intersection can be re-established at will.
2. Brief description of the ~rior art:
In certain liquid waste treatment plants prssently in operation, the liquid waste is supplied to the plant through an underground, generally vertical pipe conduit. The so supplied liquid waste is received by a pair of parallel and upwardly open horizontal conduits conducting the liquid waste toward treatment eguipments. Maintenance of the latter equipments and of the horizontal conduits themselves requires periodic isolation thereof from the vertical pipe conduit. This is actually carried out by means of suitable gates; one gate is required for each conduit in the existing installations.
Another drawback of these gates is that they are permanently immersed in the liquid waste whereby maintenance thereof is very troublesome.
Replacement of the prior art gates by suitable valves can be envisaged. For example, interconnection of the pipe conduit with the two . ' ' ' .
: - ' .
2~ 3~ ~
horizontal conduits through a swiny valve such as that illustrated and described in United States patent 2,516,510 ~FANTZ) issued on July 25, 1950, would allow isolation of either one of the horizontal conduits. However, such a valve would not enable re-establishment of the interconnection between the three conduits. Again, this valve would be permanently immersed in the liquid waste thereby causing troublesome maintenance.
O~JECT OF THE INVENTION
The main object of the present inv ntion is therefore to eliminate the above discussed drawbacks of the prior art.
SUMMARY OF THE INVENTION
More specifically, the subject invention is concerned with a gate system mounted at an intersection of three conduits whose function is to conduct a fluid substance. The gate system comprises means for isolating first and second one of these conduits from each other whereby no fluid substance can be transfered from the first conduit to the second one, and vice versa. The conduits isolating means comprises ~a) a gate that can be translated along a give axis, and ~b) means for translating this gate alonq the latter axis to a position in which the gate isolates the first and second conduits from each other.
When the first conduit is a cylindrical pipe conduit having a longitudinal axis parallel to 2q~
the above mentioned given axis, the gate is semicylindrical and has a geometrical axis coinciding with the longitu~inal axis of the pipe condui~, and the gate translating means comprises means for placing the semicylindrical gate either in first and second angular posi~ions wi~h respect to tha geometrical axis o~ the gate. In its first angular position, the gate can be translated along the said given axis to the position in which the gate isolates the cylindrical pipe conduit and the second conduit from each other. In its second anqular position, the gate can be translated into a position in which the gate isolates the cylindrical pipe conduit and the third one of the co~duits from each other.
Advantageously, the gate translating means comprises means for translating the gate to position in which interconnection between the three conduits at their in~ersection is re-established, and in which the gate is outside the fluid substance.
Accordingly, in the gate system of the invention (a) a simple gate is capable of isolating either one of two conduits in the group of three interconnected conduits, (b~ interconnection of the three conduits at their intersection can be re~
established by appropriately translating the single gate, and (c) the yate can be positioned outside the fluid substance to make maintenance thereof easier.
The objects, advantages and other features of the present invention will become more apparent upon reading of the ~ollowing non restrictive description o~ a preferred embodiment t~ereo~, given by way of example only in conjunction with the accompanying drawings.
BRIEF DESCRIPTION OF THE D~WINGS
In the appended drawings:
Figure 1 is a plan view of an intersection between three conduits in a plant for the treatment of liquid waste;
Figure 2 is a partially cross sectional, side elevation view of a gate system in accordance with the invention, including a semicylindrical gate;
and Figure 3 is a top cross sectional view, taken along axis A-A of Figure 2, of the semicylindrical gate of the system of Figure 2.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Although the present invention is described hereinafter in conjunction with a liquid waste treatment plant, it should be pointed out that the gate system of the invention is not limited to this particular application.
Referring now to Figures 1, 2 and 3 of the appended drawings, liquid waste is supplied to the treatment plant through a first vertical conduit 1, namely a cylindrical pipe conduit, as shown by the arrow 2 (Figure 2). The liquid waste from the first conduit 1 is supplied to sacond and third conduits 3 2~30~3 and ~ (Figure 1) respectively ~orming part of t~o parallel and similar liquid waste circuits. The liquid waste in the cQnduits 3 and 4 is conducted toward liquid waste treatment equipments (not shown~.
The direction of flow in the conduits 3 and 4 is indicated by the arrows 5 and 6, respectively.
The conduits 3 and 4 are generally horiæontal, that is perpendicular to the pipe conduit 1, they are formed into tha concrete 7 of the plant, and they open upwardly.
Two vertical and coplanar walls 8 and 9 are partially embedded into the surrounding concrete and are interposed between the conduits 3 and 4. The walls 8 and 9 are situated at the ~ree upper end of the pipe conduit 1 on the respective side~ of this vertical conduit l; the walls 8 and 9 have therefore diametrically opposed ends parallel to the longitudinal axis o~ the conduit 1. The walls 8 and 9 are made of steel covered by a layer of rubber for corrosion protection purposes; indeed the latter walls are permanently immersed into the liquid waste and are therefore likely to corrode.
The gate system comprises a fram0 structure 10 with lower portions embedded within the concrete of the floor of the plant or otherwise fixed to this floor. The structure 10 comprises an horizontal upper portion including a threaded hole 11 aligned with the longitudinal axis of the pipe conduit 1.
Obviously, the design of the frame structure 10, schematically illustrated in Figure 2, is within the 2~ [13~
skill of a person familiar with the technical field of concern.
~ straight threaded rod 13 is engaged with the threaded hole 11; its longitudinal axis accordingly coincides with the longitudinal axis of the pipe conduit 1. A wheel 14 is fixedly secured to the upper end of the rod 13 to allow the operator to rotate this rod 13 about its longitudinal axis and thereby translate it along a given axis coinciding with both the longitudinal axis of the rod 13 and conduit 1.
A semicylindrical gate 15 has a geometrical axis coinciding with the abo~e mentioned given translation axis and the longitudinal axis of the rod 13 and pipe conduit 1. The coinciding geometrical axis of the semicylindrical gate, given translation axis, longitudinal axis of the rod 13~ and longitudinal axis of the pipe conduit 1 are illustrated in Figures 1 to 3 by a single axis identified by the reference numeral 12.
The gake 15 comprises an upper horizontal member 16 with a hole 17 therein to receive the lower end of the rod 13. A nut and washer assembly 18, 19 is disposed on either side of the member 16 to attach the gate 15 to the lower end of the rod 13 while enabling rotation of the gate about the axis 12. The nuts of the assemblies 18 and 19 can be pinned to the rod 13 to ensure adequate attachment of the gate 15 to the latter rod.
`- 2~0;~
The semicylindrical gate 15 further comprises a pair of elongated, diametrically opposed U-shaped guides 20 and 21 which are parallel to the axis 12 and which slide onto respective rail~ ~ormed by the con~ronting ends o~ the walls 8 and 9.
In operation, the rod 13 can be rotated through the weel 14 to translate downwardly the gate 15 along the axis 12, with the U-shaped guides 20 and 21 sliding along their respective rails. The radius of the gate 15 and that of the pipe conduit 1 are equal (Figure 3), the upper end o~ the pipe conduit 1 is tapered (Figure 2), and a rubber gasXet 22 (Figure 2) is mounted on the lower end o~ the gate 15. The gasket 22 is also tapered to fit on ~he upper end of the conduit 1 and thereby form a liquid-tight joint between the gate 15 and conduit 1. Pressure can obviously be applied on the gasket 22 through rotation o~ the wheel 14 and rod 13. The rubber covering o~ the walls 8 and 9 also ensure a certain degree of imperviousness between the guides 20 and 21 and the respective walls 8 and 9. In the illustrated example, the conduit 4 is then isolated from the pipe conduit 1 while the conduit 3 is still in communication therewith. A very interesting characteristic of the gate system according to the invention is that no obstruction to the pipe conduit 1 is caused by the gate 15 when one o~ the conduits 3 and 4 is isolated (Figure 3).
The wheel 14 can subse~uently be operated to translate upwardly the gate 15 along the axis 12 whereby interconnection between the conduits 1, 3 and 4 is re-established at their intersection.
~3~9 The gate 15 can be translated upwardly along the axis 12 until the guides 20 and 21 disengage their respec~ive rails (confronting ends of walls 8 and 9). The gate 15 can then be rotat~d on the rod 13 (see arrow 23 in Figure 3~ about the axis 12 between first and second angular positions ~80 apart from each other. In ths ~irst angular position of ths gate 15 as shown in Figure 3, the guides 20 ~o and 21 are aligned with their rail~ whereby the gate 15 can be translated downwardly to isolate conduit 4.
In the second angular position (180 apart from that of Figure 3), the guides 20 and 21 are again aligned with the rails and accordingly the gate 15 can be translated downwardly to isolat~, this time, conduit 3.
As can be appreciated, the gate system in accordance with the invention is of simple structure, it can be installed at low cost, and is very easy to operate.
Although the present invention has been described in detail in the foregoing description by way of a preferred embodiment thereof, such an embodiment can be altered at will, within the scope of the appended claims, without departing from the spirit of the invention.
Claims (15)
1. A gate system installed at an intersection of three conduits whose function is to conduct a fluid substance, said gate system comprising means for isolating first and second ones of said conduits from each other whereby no fluid substance can be transferred from the first conduit to the second one and from the second conduit to the first one, said conduits isolating means comprising (a) a gate that can be translated along a given axis, and (b) means for translating said gate along said given axis to a position in which said gate isolates the said first and second conduits from each other.
2. The gate system of Claim 1, wherein the said gate translating means comprise means for guiding said gate upon translation thereof along the said given axis.
3. The gate system of Claim 2, in which said gate guiding means comprises two stationary spaced apart rails parallel to said given axis, and two guides U-shaped in cross-section, fixed to said gate, and sliding along the said two rails respectively.
4. The gate system of Claim 1, in which said gate translating means comprises (a) a support frame with a threaded hole, (b) a threaded rod parallel to said given axis, engaged with the threaded hole, and having a free end, said gate being attached to said free end of the threaded rod and being capable of rotating on the said free end of said threaded rod;
and (c) means for rotating said threaded rod into the threaded hole in order to translate said gate along the said given axis.
and (c) means for rotating said threaded rod into the threaded hole in order to translate said gate along the said given axis.
5. The gate system of Claim 1, wherein (a) said first conduit is a cylindrical pipe conduit having a longitudinal axis parallel to said given axis, (b) said gate is semicylindrical and has a geometrical axis coinciding with said longitudinal axis, (c) said gate translating means comprises means for placing said semicylindrical gate either in first and second angular positions with respect to said geometrical axis, wherein in said first angular position said gate can be translated along the said given axis to said position in which said gate isolates the cylindrical pipe conduit and the second conduit from each other, and wherein in said second angular position said gate can be translated into a position in which said gate isolates the cylindrical pipe conduit and the third one of said conduits from each other.
6. The gate system of Claim 5, in which (a) the said cylindrical conduit comprises a free end at the said intersection of three conduits, (b) said gate translating means comprises at the free end of said cylindrical conduit a pair of stationary rails parallel to said longitudinal axis of the cylindrical pipe conduit, and (c) said semicylindrical gate is provided with a pair of guides parallel to said geometrical axis of the gate and sliding along said rails, respectively.
7. The gate system of Claim 6, in which (a) said pair of guides are U-shaped in cross section, (b) said second and third conduits are generally horizontal, and said cylindrical pipe conduit is generally vertical, and (c) said stationary rails are constituted by respective ends of a pair of spaced apart and generally vertical walls positioned at the free end of the said vertical conduit and partially separating said second and third conduits at the said intersection.
8. The gate system of Claim 7, wherein said rails are diametrically opposed with respect to said longitudinal axis of the vertical pipe conduit, and wherein said U-shaped guides are diametrically opposed with respect to said geometrical axis of the gate.
9. The gate system of Claim 7, wherein said pair of generally vertical walls are covered with a layer of rubber material.
10. The gate system of Claim 5, in which said cylindrical pipe conduit has a tapered free end, and wherein said semicylindrical gate has an end also tapered to adapt said free end of the cylindrical conduit.
11. The gate system of Claim 10, in which said tapered end of said semicylindrical gate comprises gasket means to form a fluid-tight joint between said tapered ends of the cylindrical conduit and semicylindrical gate.
12. The gate system of Claim 10, wherein said cylindrical pipe conduit and said semicylindrical gate both have substantially the same radius.
13. The gate system of Claim 1, in which said gate translating means comprises means for translating the gate to a position in which interconnection between the three conduits at their intersection is re-established, and in which the gate is outside the fluid substance.
14. The gate system of claim 6, in which said gate translating means comprises means for translating the gate to a position in which interconnection between the three conduits at their intersection is re-established, and in which the gate is outside the fluid substance.
15. The gate system of Claims 6, in which said gate placing means comprises (a) means for translating said gate in a first direction until said guides disengage said rails, (b) means for rotating said gate about its geometrical axis when said guides and said rails are disengaged, and (c) means for translating said gate in a second direction opposite to said first direction until said guides re-engage said rails.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2003019 CA2003019A1 (en) | 1989-11-15 | 1989-11-15 | Conduit isolating gate system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2003019 CA2003019A1 (en) | 1989-11-15 | 1989-11-15 | Conduit isolating gate system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2003019A1 true CA2003019A1 (en) | 1991-05-15 |
Family
ID=4143565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2003019 Abandoned CA2003019A1 (en) | 1989-11-15 | 1989-11-15 | Conduit isolating gate system |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2003019A1 (en) |
-
1989
- 1989-11-15 CA CA 2003019 patent/CA2003019A1/en not_active Abandoned
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |