CA2004467A1 - Bag puncturing means - Google Patents
Bag puncturing meansInfo
- Publication number
- CA2004467A1 CA2004467A1 CA 2004467 CA2004467A CA2004467A1 CA 2004467 A1 CA2004467 A1 CA 2004467A1 CA 2004467 CA2004467 CA 2004467 CA 2004467 A CA2004467 A CA 2004467A CA 2004467 A1 CA2004467 A1 CA 2004467A1
- Authority
- CA
- Canada
- Prior art keywords
- connector
- bag
- socket
- puncturing
- spring
- 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
Abstract
ABSTRACT
A bag puncturing means to couple to a socket outlet or a plastic liner bag of a liquid container where the socket is closed of by a portion of the plastic bag. The puncturing means comprises a connector engagable in the socket and movable linearly in the socket and having a liquid passing opening through the connector housing a coiled compression spring which extends from the connector and is longer than the socket and a cutter which is caused to penetrate the socket closing portion of the bag by relative movement between the connector and the socket thereby allowing the spring to enter into the bag.
A bag puncturing means to couple to a socket outlet or a plastic liner bag of a liquid container where the socket is closed of by a portion of the plastic bag. The puncturing means comprises a connector engagable in the socket and movable linearly in the socket and having a liquid passing opening through the connector housing a coiled compression spring which extends from the connector and is longer than the socket and a cutter which is caused to penetrate the socket closing portion of the bag by relative movement between the connector and the socket thereby allowing the spring to enter into the bag.
Description
BAG PllNCTURING MEANS
____________________ This invention is concerned with apparatus used in the discharge of liquid ~rom a container.
It is common practice to transport liquids in a rigid container lined with a plastic liquid impervious bag. The container includes a side discharge port near the bottom of - one side and a discharge means is mounted in the discharge port and the plastic bag is punctured to allow the contents to flow from the liner bag through the discharge ~eans.
It has been found that when the liqu~d level is close to the bottom of a container during a discharge operation it is not uncommon for the plastic around the punture in the liner bag to enter the puncture hole and this can interrupt the free flow of liquid from the liner bag. In some ins~ances there is a total interruption of flow making it almost impossible to completely discharge the liquid.
The object o~ the present invention is to overcame the above problem by providing means to puncture the plastic liner bag and prevent the plastic bag adjacent the hole therein, through which the liquid discharges, entering the discharge means thereby ensuring that the discharge of the liquid will be continuous and without interruption.
Broadly, the invention can be said to provide a bay puncturing means to ~orm a hole in a liquid filled plastic bag housed in a rigid container and having a socket means extending through a wall of the container with a ~ocket bore providing access to a portion of the bag to be punctured and adapted to be engaged by said puncturing means; said puncturing means comprising a connector with a bore extending through said connector, coupling means to couple ~aid : connector and said socket means with the bores of the connector and the socket means in communication, characterised by the coupling means allowing linear relative movement between said connector and the socket means and a compressible coil spring mounted in said connector bore and fixed to and movable with said connector with a portion of said spring extending from said connector bore, the length of said spring portion being such that when in an uncompressed state with the connector coupled to said socket means at least a part of said portion adjacent a free end of said porti~n would extend into the interior of said bag when punctured, and an aperture forming means to penetrat;e said .bag portion as said connector is moved linearly relative to the socket means in a bag puncturing direction.
. . .
Two presently preferred forms of the invention will now be described with reference to the accompanying drawings in which;
Fig.1 is a fragmentary sectional elevation of a first form of 6~7 the puncturing means of the present lnvention ~ounted in a co~tainer prior to the format:ion of a liquid releasing aperture in the bag, Fig.2 is an exploded sectional view of the several parts of the puncturing means of Fig.l, and Fig.3 is a view similar to Fig.l where the bag has been punctured.
In the drawing Figs.l and 3 there is shown a fragment o~ a contaîner C having a rigid front wall 1 and a rigid base 2 ~o and an opening 3 ln the wall 1. Within the container represented by the wall 1 and the bottom 2 there is a plastic liner bag 4 with an internally threa~ed socket 5 welded to the bag 4 and aligned with the bore 21 of the socket 5 there is a portion of the bag wall identified 6 which is intended to be punctured to allow the liquicl to discharge from the bag. The socket 5 projects through the opening 3 in the container wall 1.
The manner of bag construction can be varied according to ~requirements but the final product is as illustrated, namely, there is a socket adapted to receive a threaded connection piecé whereby the socket is coupled to a discharge means, ~uch as a hose or a pipe or a valve. There is a portion 6 in~ended to be punctured in some manner and the li~uid in the bag discharges through the socket.
____________________ This invention is concerned with apparatus used in the discharge of liquid ~rom a container.
It is common practice to transport liquids in a rigid container lined with a plastic liquid impervious bag. The container includes a side discharge port near the bottom of - one side and a discharge means is mounted in the discharge port and the plastic bag is punctured to allow the contents to flow from the liner bag through the discharge ~eans.
It has been found that when the liqu~d level is close to the bottom of a container during a discharge operation it is not uncommon for the plastic around the punture in the liner bag to enter the puncture hole and this can interrupt the free flow of liquid from the liner bag. In some ins~ances there is a total interruption of flow making it almost impossible to completely discharge the liquid.
The object o~ the present invention is to overcame the above problem by providing means to puncture the plastic liner bag and prevent the plastic bag adjacent the hole therein, through which the liquid discharges, entering the discharge means thereby ensuring that the discharge of the liquid will be continuous and without interruption.
Broadly, the invention can be said to provide a bay puncturing means to ~orm a hole in a liquid filled plastic bag housed in a rigid container and having a socket means extending through a wall of the container with a ~ocket bore providing access to a portion of the bag to be punctured and adapted to be engaged by said puncturing means; said puncturing means comprising a connector with a bore extending through said connector, coupling means to couple ~aid : connector and said socket means with the bores of the connector and the socket means in communication, characterised by the coupling means allowing linear relative movement between said connector and the socket means and a compressible coil spring mounted in said connector bore and fixed to and movable with said connector with a portion of said spring extending from said connector bore, the length of said spring portion being such that when in an uncompressed state with the connector coupled to said socket means at least a part of said portion adjacent a free end of said porti~n would extend into the interior of said bag when punctured, and an aperture forming means to penetrat;e said .bag portion as said connector is moved linearly relative to the socket means in a bag puncturing direction.
. . .
Two presently preferred forms of the invention will now be described with reference to the accompanying drawings in which;
Fig.1 is a fragmentary sectional elevation of a first form of 6~7 the puncturing means of the present lnvention ~ounted in a co~tainer prior to the format:ion of a liquid releasing aperture in the bag, Fig.2 is an exploded sectional view of the several parts of the puncturing means of Fig.l, and Fig.3 is a view similar to Fig.l where the bag has been punctured.
In the drawing Figs.l and 3 there is shown a fragment o~ a contaîner C having a rigid front wall 1 and a rigid base 2 ~o and an opening 3 ln the wall 1. Within the container represented by the wall 1 and the bottom 2 there is a plastic liner bag 4 with an internally threa~ed socket 5 welded to the bag 4 and aligned with the bore 21 of the socket 5 there is a portion of the bag wall identified 6 which is intended to be punctured to allow the liquicl to discharge from the bag. The socket 5 projects through the opening 3 in the container wall 1.
The manner of bag construction can be varied according to ~requirements but the final product is as illustrated, namely, there is a socket adapted to receive a threaded connection piecé whereby the socket is coupled to a discharge means, ~uch as a hose or a pipe or a valve. There is a portion 6 in~ended to be punctured in some manner and the li~uid in the bag discharges through the socket.
2~
The puncturing means has as essential components a connector which i5, as illustrated, a nipple member 7 threaded at both ends at 23 and 25 wh.ich ends are respectively adapted to enter into the threaded part 24 of the bore 21 of the socket 5 and into a valve 8. Housed within the nipple member 7 there i5 a compressible coil spring 9 which preferably has a par;ticular shape, see Figs.2 and 3. The spring shape includes a parallel portion 10 and a tapered portion 11 at one end. At the other end the spring has an enlaryed end coil 12 which, as will be seen from Fig.2, is intended to be retained (or locked if desired) between the end 14 of the nipple 7 and the shoulder 26 at the bottom of the internally threaded connection end 15 of the valve 8.
There is a cutter 16, which has a ring or tubular form with a flat end 1~ and teeth 18 at the other end. It is to be noted however that the teeth 18 do not extend the whole way around the cutter and there i5 a non-toothed portion indicated 19 without teeth and at a lower level than the tops of the teeth lB. The outside diameter of the cutter 16 is greater than the diameter o~ the bore 22 of the nipple but less than the outside di~meter of the threaded part 23 of the nipple.
.
From Fig.1 it will be seen that as the connector nipple ~ is threaded into the socket 5 the spring 9 is compressed as it bears against the bag portion 6. Further threading 2~ D7 engagement o~ the connector into the socket brings the teeth 18 of the cutter 16 into enyagement with the bag portion 6 and puncturing occurs. The development o~ the puncture i~
by the points o~ the teeth penetrating the bag and as the cutter is forced further into the bag the penetrations extend into slits which eventually join up. Prior to the slits joining up the pressure exerted by the compressed spring will usually overcome the resistance of the uncut plastic bag between the slits and a flap 20 i5 forced into the interior of the bag. For convenience the flap 20 is shown at the bottom of the hole, in practice the flap 20 could be anywhere around the circumference o~ the cutter.
As will be seen from Fig.3 the spring, which has a length uncompressed such that is will extend into the bag, prevents the flap 20 from being drawn back into the socket as the liquid discharges and thus the object of the invention is achieved.
. .
When the nipple is withdrawn the sprin~ is withdrawn, because of the coil 12 held captive between the nipple and valve.
The cutter supported on the spring will be withdrawn at the same time and the cutter will be supported by the spring as it is withdrawn ~rom the bore 21 of the socket 5.
In an alternative arrangement, there is no cutter 16 and the spring is ~ubstantially the same diameter along its length, ~O~ 7 exc~pt for the enlarged end coil 12 which is, as before, captive between the nipple and the valve. The free end of the spring i5 a "flattened" coil with an upstanding sharpened spur. A~ the nipple is threaded into the spout the spring is compressed but at the same time it is forceably rotated with the nipple. The rotation causes the spur to cut through the bag portion 6 and eventually there is sufficient of the portion 6 slit to allow the compressed spring to burst therethrough to push a flap 20 aside. It will be understood that total severance would not occur because, as before, once there has been sufficient partial severance the spring will push the flap 20 aside and enter the liner bag.
The presently preferred two embodiment of the invention as just described are representative of two possible manners of intro~ucing a ~lap restrainer into a liquid containing bag and are not to be construed as the only ways in which this ob~ective i5 able to be achieved.
The puncturing means has as essential components a connector which i5, as illustrated, a nipple member 7 threaded at both ends at 23 and 25 wh.ich ends are respectively adapted to enter into the threaded part 24 of the bore 21 of the socket 5 and into a valve 8. Housed within the nipple member 7 there i5 a compressible coil spring 9 which preferably has a par;ticular shape, see Figs.2 and 3. The spring shape includes a parallel portion 10 and a tapered portion 11 at one end. At the other end the spring has an enlaryed end coil 12 which, as will be seen from Fig.2, is intended to be retained (or locked if desired) between the end 14 of the nipple 7 and the shoulder 26 at the bottom of the internally threaded connection end 15 of the valve 8.
There is a cutter 16, which has a ring or tubular form with a flat end 1~ and teeth 18 at the other end. It is to be noted however that the teeth 18 do not extend the whole way around the cutter and there i5 a non-toothed portion indicated 19 without teeth and at a lower level than the tops of the teeth lB. The outside diameter of the cutter 16 is greater than the diameter o~ the bore 22 of the nipple but less than the outside di~meter of the threaded part 23 of the nipple.
.
From Fig.1 it will be seen that as the connector nipple ~ is threaded into the socket 5 the spring 9 is compressed as it bears against the bag portion 6. Further threading 2~ D7 engagement o~ the connector into the socket brings the teeth 18 of the cutter 16 into enyagement with the bag portion 6 and puncturing occurs. The development o~ the puncture i~
by the points o~ the teeth penetrating the bag and as the cutter is forced further into the bag the penetrations extend into slits which eventually join up. Prior to the slits joining up the pressure exerted by the compressed spring will usually overcome the resistance of the uncut plastic bag between the slits and a flap 20 i5 forced into the interior of the bag. For convenience the flap 20 is shown at the bottom of the hole, in practice the flap 20 could be anywhere around the circumference o~ the cutter.
As will be seen from Fig.3 the spring, which has a length uncompressed such that is will extend into the bag, prevents the flap 20 from being drawn back into the socket as the liquid discharges and thus the object of the invention is achieved.
. .
When the nipple is withdrawn the sprin~ is withdrawn, because of the coil 12 held captive between the nipple and valve.
The cutter supported on the spring will be withdrawn at the same time and the cutter will be supported by the spring as it is withdrawn ~rom the bore 21 of the socket 5.
In an alternative arrangement, there is no cutter 16 and the spring is ~ubstantially the same diameter along its length, ~O~ 7 exc~pt for the enlarged end coil 12 which is, as before, captive between the nipple and the valve. The free end of the spring i5 a "flattened" coil with an upstanding sharpened spur. A~ the nipple is threaded into the spout the spring is compressed but at the same time it is forceably rotated with the nipple. The rotation causes the spur to cut through the bag portion 6 and eventually there is sufficient of the portion 6 slit to allow the compressed spring to burst therethrough to push a flap 20 aside. It will be understood that total severance would not occur because, as before, once there has been sufficient partial severance the spring will push the flap 20 aside and enter the liner bag.
The presently preferred two embodiment of the invention as just described are representative of two possible manners of intro~ucing a ~lap restrainer into a liquid containing bag and are not to be construed as the only ways in which this ob~ective i5 able to be achieved.
Claims (6)
1. A bag puncturing means to form a hole in a liquid filled plastic bag housed in a rigid container and having a socket bore providing access to a portion of the bag to be punctured and adapted to be engaged by said puncturing means;
said puncturing means comprising a connector with a bore extending through said connector, coupling means to couple said connector and said socket means with the bores of the connector and the socket means in communication, said coupling means allowing linear relative movement between said connector and the socket means and a compressible coil spring mounted in said connector bore and fixed to and movable with said connector with a portion of said spring extending from said connector bore, the length of said spring portion being such that when in an uncompressed state with the connector coupled to said socket means at least a part of said portion adjacent a free end of said portion would extend into the interior of said bag when punctured, and an aperture forming means to penetrate said bag portion as said connector is moved linearly relative to the socket means in a bag puncturing direction.
said puncturing means comprising a connector with a bore extending through said connector, coupling means to couple said connector and said socket means with the bores of the connector and the socket means in communication, said coupling means allowing linear relative movement between said connector and the socket means and a compressible coil spring mounted in said connector bore and fixed to and movable with said connector with a portion of said spring extending from said connector bore, the length of said spring portion being such that when in an uncompressed state with the connector coupled to said socket means at least a part of said portion adjacent a free end of said portion would extend into the interior of said bag when punctured, and an aperture forming means to penetrate said bag portion as said connector is moved linearly relative to the socket means in a bag puncturing direction.
2. Puncturing means as claimed in claim 1 wherein said aperture forming means comprises a ring with said portion of said spring passing therethrough, bag puncturing teeth on one end surface of said ring extending in the axial direction of the bore of said connector and the other end surface of said ring is adapted to be engaged by said connector to provide the bag penetrating movement of said connector relative to said socket means.
3. Puncturing means as claimed in claim 1 wherein said connector is rotated relative to said socket means to provide the relative linear movement of said connector relative to said socket means, and said aperture forming means comprises a cutting spur on said free end of said spring portion.
4. Puncturing means as claimed in claim 1 wherein said connector includes a valve to control the flow of liquid from said bag after puncturing.
5. Puncturing means as claimed 4 where said connector comprises a nipple member and end portions of the nipple are respectively threaded to engage in said socket means and in said valve and wherein said spring has an end coil which is clamped between an end face of said nipple and a shoulder of said valve to lock said spring to said connector.
6. Puncturing means as claimed in claim 2 wherein said bag puncturing teeth do not extend completely around said one end surface of said ring leaving a portion of said one end surface of said ring without teeth and at a level lower than the tops of said teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2004467 CA2004467A1 (en) | 1989-12-01 | 1989-12-01 | Bag puncturing means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2004467 CA2004467A1 (en) | 1989-12-01 | 1989-12-01 | Bag puncturing means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2004467A1 true CA2004467A1 (en) | 1991-06-01 |
Family
ID=4143692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2004467 Abandoned CA2004467A1 (en) | 1989-12-01 | 1989-12-01 | Bag puncturing means |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2004467A1 (en) |
-
1989
- 1989-12-01 CA CA 2004467 patent/CA2004467A1/en not_active Abandoned
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |