JPS62113020A - Fluid dispenser - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to fluid dispensing for dispensing a substantially constant dose of fluid from a bottle or similar container into an aquarium or the like each time the aquarium is flushed. Regarding equipment. The fluid dispensing device is particularly, but not exclusively, suitable for dispensing treatment fluids containing active ingredients such as disinfectants or cleaning agents into the cistern of a toilet facility during each flush of the cistern.

[Prior Art and Problems to be Solved by the Invention] Fluid dispensing devices hitherto known for this purpose are:
For example, U.S. Pat. No. 2,688,754, 307,348
No. 8, No. 3864763, No. 3895739, No. 3
No. 965,497 and No. 4,131,958, it has a generally bell-shaped chamber which opens at the bottom into the neck of a bottle filled with the fluid to be dispensed. In use, the bottle is tipped over so that the fluid dispensing device is located below the bottle, and placed in the water tank to ensure that the bottle is at least partially immersed when the water tank becomes sloppy. . In this position, the hell chamber forms an air trap for trapping the amount of air that will be present once the aquarium is full again after each flush. When the head of the fluid in the water tank rises ten times above the air lamp, the above-mentioned air is finally forced into the bottle. This additional amount of air in the headspace above the fluid in the bottle slightly increases the internal pressure within the bottle, and thus, when flushing the aquarium and the level of fluid in this aquarium falls, a small amount of fluid will flow into the bottle. Fluid dispensing device from 1M1L
It is dispensed with.

It can be shown that the 11.1 volume of process fluid during each flush is proportional to the amount of air previously injected. Furthermore, it can be shown that as the amount of air trapped in the bottle increases, the intake of air increases. Thus, when the bottle is empty, the increasing amount of fluid is 1
summer! A subsequent increase in the dose of active ingredient is undesirable and unnecessary if the initial dose is adequate.

The purpose of the invention is to control 11 every time the aquarium is flushed.
for dispensing quantities of fluid from a bottle or similar container into an aquarium or the like, each controlled dose of fluid remaining substantially constant as the bottle is progressively emptied An object of the present invention is to provide a fluid dispensing device that can do the following.

[Means for solving problems]

According to one aspect of the invention, during use, the content supply tube is provided with a content supply tube opening at one end into the interior of the bottle and at the other end forming an air trap, each time the aquarium is flushed. , a fluid dispensing device for dispensing a controlled dose of fluid from an overturning bottle into an aquarium, comprising a chamber opening 1-1 in an air trap end of a content supply tube and a chamber for dispensing a controlled dose of fluid into an aquarium; A fluid dispensing device is provided, further comprising: a siphon connecting the chamber to an outlet port on an exterior surface of the fluid dispensing device; and an air vent connecting the chamber to an exterior surface of the fluid dispensing device above the outlet port. be done.

In use, the fluid dispensing device is secured to the opening of a bottle or similar container filled with the fluid to be dispensed (usually a process fluid) such that the content supply tube opens into the interior of the bottle. The bottle is then inverted so that the fluid dispensing device is below the bottle and the process fluid in the bottle is at least partially immersed in the aquarium to be dispensed each time the aquarium is flushed.

When the aquarium is flushed once, the water level in the aquarium starts to fall, increasing the fluid dispensing device and reducing the water pressure, and when the external pressure drops, the head of the processing fluid in the bottle starts to flush before the start of the flushing process. It becomes thicker than can be supported by the partial vacuum that existed in the headspace above the fluid, so the process fluid begins to descend down the content supply tube and into the chamber. The process fluid flowing into the chamber then displaces the fluid through the siphon, but initially this fluid remained in the lower part of the siphon from when it entered the fluid dispensing device from the fluid in the aquarium during soaking of the bottle. It is a fluid.

When the water level of the aquarium drops, it will eventually expose the air vent,
Air therefore enters the chamber again, so that the level of fluid in the chamber (which is constantly replenished with process fluid exiting from the content supply tube) also begins to fall. In doing so, fluid in the chamber and siphon is forced through the siphon.

Eventually, the level of the aquarium drops off the bottom of the fluid dispensing device. At this stage, fluid from the chamber continues to be forced through the siphon under pressure of its own head until the surface of the fluid in the chamber drops below the level of the top of the siphon. At this point, the fluid supply from the chamber switches from the pressure supply to the siphon supply system and the level of fluid in the chamber continues to fall until air enters the siphon and siphon action is interrupted (6th figure). Thus, a dose of processing fluid from the bottle has been dispensed into the chamber, held, and then released into the aquarium at a later stage in the aquarium emptying cycle.

When the aquarium begins to refill after being flushed, the rising level of fluid in the aquarium causes air trapped in the siphon to bubble through the remaining fluid in the chamber around the bottom edge of the siphon.

As air from the siphon bubbles through the fluid remaining at the bottom of the chamber, the fluid in the aquarium flows into the chamber and raises the level of fluid in the chamber. Initially, air is released from the chamber through the air vent, but as the fluid in the aquarium rises above the chamber, it reaches a point where the air is forced from the air trap into the bottle. When the amount of air in the headspace above the processing fluid is now greater than in the previous case, the amount that can compress or expand this air is also slightly increased, and therefore there is a slightly greater amount of air. may be press-fitted into the bottle.

Once the aquarium has been filled, the fluid dispensing device assumes a substantially stable state until the aquarium is flushed again, when dispensing process fluid in exactly the same manner as described above.

Each time the aquarium is flushed, a small amount of process fluid exits the bottle through the content supply tube, is captured in a chamber, diluted, and then dispensed later in the flush.

During each refill operation, a small amount of air is forced into the bottle to increase the volume of the headspace above the processing fluid, thereby increasing the volume that can compress this headspace;
This increases the amount of air that can enter in the next cycle.

Eventually, the amount of air that can be forced into the bottle will exceed the volume of the air trap (if the air trap is dimensioned appropriately), and then all subsequent filling cycles will first force air, but Fluid is then forced from the chamber into the bottle through the content supply tube at 11L. The combined effect of these two parameters is that as the bottle empties, increasing volumes of fluid are dispensed from the bottle, but at the same time these increasing volumes are increasingly diluted by the fluid that is forced into the bottle from the chamber. That will happen. By this means, and by careful design of the dimensions of the fluid dispensing device, it is possible to ensure that a substantially constant dose of treatment liquid is dispensed from the bottle each time the aquarium is flushed.

〔Effect of the invention〕

An advantage of the present invention is that fluid is dispensed only during the period following the flush operation. Thus, when the cistern forms part of a toilet fixture, a significant amount of the dispensed fluid remains in the toilet bowl after flushing. Also, as a result, no or virtually no dispensing fluid remains in the aquarium after completion of the flush operation. It also avoids unnecessary dissipation of any active substances in the fluid, such as perfume ingredients, and unnecessary or undesirable dilution of the active substances in the fluid.

Also, the amount of fluid dispersed in each flash can be predetermined within acceptable limits for volume variation.

Preferably, the fluid dispensing device includes a plug member adapted to be secured to the opening of the bottle in use, and the content supply conduit is formed in the plug member.

Preferably, the fluid dispensing device further includes a cap member that fits over the plug member to define the chamber, the siphon and the double vent between the members.

Advantageously, the cap is provided on the plug such that it is movable between a first position in which the fluid dispensing device is not activated and a second position in which the fluid dispensing device is activated. This allows a bottle filled with fluid and fitted with a fluid dispensing device to be transported without spillage caused by moving the cap relative to the plug to said first position.

Preferably, the dispensing device comprises an internal seal, the internal seal interengaging with the cap and the plug, respectively, when the cap is in said first position to close the siphon and air vent to the passage of fluid from the bottle. It has a surface that protects it.

Preferably, the end of the air trap opening into the chamber is located above the level of the bottom edge of the siphon opening into the chamber. This ensures that as the air enters the chamber through the siphon and bubbles through the surface of the residual fluid in the chamber, the fluctuating surface of the residual fluid does not hit the end of the air trap and the pressure of the air in the air trap increases. does not cause instantaneous fluctuations in

In fact, it has been found that frictional losses within the German siphon tend to clog the siphon and prevent it from emptying completely. To overcome this problem, a siphon propagation chamber may be formed at or towards the outer end of the siphon. The siphon propagation chamber contains a liquid which, when the water level in the aquarium falls below it, begins to expel water through the siphon and to facilitate the siphon action.

Preferably, the siphon propagation chamber is defined by an outer raised peripheral wall around the exit port.

According to a second aspect of the invention there is provided a fluid dispensing agent according to the first aspect of the invention in combination with a bottle containing the fluid to be dispensed.

Preferably, the bottle is formed with a threaded neck, and the cap is formed with an internal thread for screwing the bottle into the neck.

The cap may be constrained by forming an inwardly directed annular rib or bead over the circumferential rib or bead, and the bottle is formed with a neck having a cam surface; The cap is formed with complementary camming surfaces, so that when both of these surfaces are circumferentially displaced, the cap assumes the first position in which the fluid dispensing device is not actuated, and then the neck and cap are By relative rotation to assume two positions, a force J on the one hand, the surface riding axially on the cam surface on the other, displaces the cap relative to the neck of the bottle and activates the fluid dispensing device. can. A structure of this type is disclosed in British Patent No. 126(13)28.

Preferably, the cap is held to the neck in this construction by a circumferential rib formed in the neck of the bottle so as to act on the inner surface of the cap.

The volumetric capacity of the inner air trap is selected to define the amount of air forced into the bottle by the water rising through the aquarium.

In fact, it would be advantageous to form the bottle from a thin-walled plastic material, but if the bottle were formed in this way it would have too much flexibility due to its volumetric capacity. The disadvantage of having too much flexibility is that it creates difficulties in controlling the amount of fluid dispensed.

Accordingly, in a third aspect of the invention, the bottle comprises internal stays made integral with the bottle wall and extending between diametrically opposed positions, or other means of making the bottle more rigid, for example by ribbing; A bottle is provided for use with a fluid dispenser.

The invention will now be described, by way of example only, with reference to the accompanying drawings, in which: FIG.

〔Example〕

To explain with reference to FIG. 1, the dispenser has a female thread 3.
The dispenser has a cap 1 with an internal thread 3 which screws the dispenser onto a bottle (part of which is indicated at 5). The neck is formed with a circumferential bead or rib 7 and the cap is formed with an internal complementary circumferential bead 9. The cassop is made of a material with a certain degree of elastic flexibility, and the bead 9 is pressed into the bead 7 to keep the cap restrained on the neck. It can be tightened or loosened to the extent that it becomes the neck.

In the position shown in FIG. 1, the cap is positioned so that it can actuate the dispenser, ie, when the bottle is tipped over, the fluid contained in the bottle can be dispensed from the device.

The cap comprises an inner-like web 11 supporting a central tube 13 which forms part of a siphon, generally indicated at 15. This tube 13 may be considered an outer tube in that it forms a direct inlet/outlet for liquid from the siphon to the outside of the dispenser. The dispenser is also equipped with a plug 17 which fits into the neck of the bottle with a push fit. The plug 17 is
A sleeve 19 is provided surrounding the tube 13, concentric with the tube and spaced apart from the tube.
9 is closed at its top by an end wall 21, as can be seen in FIG. 1, and forms the inner tube of the siphon. The plug 17 is also provided with an inlet/outlet pipe 23 for providing outflow between the inside of the bottle and the siphon, and this pipe 23 is connected to the annular wall 2.
7 and the sleeve 19 as a whole 2
It opens into an air trap shown at 5.

As can be seen in FIG. 1, the siphon is provided with an inlet/outlet for fluid from the bottle via the outflow pipe 23, and therefore has an inlet/outlet for air to flow into the bottle and an inlet/outlet from the siphon to the outside via the pipe 13.

The cap is formed with an upright peripheral wall portion 29 which, when the bottle is overturned as shown in FIG. form a chamber.

The head 7 of the bottle neck is formed with a slot in the direction of a solid line (not shown) to form an air vent, and the threaded part of the bottle neck directs air from the outside of the bottle through the air vent to the outside of the bottle and the inside of the dispenser. It is interrupted to allow inflow between the two.

Further, an annular rib 33 is formed on the web 11, and when the cap is completely screwed onto the neck of the bottle from a position not shown in FIG. into the annular wall 27 of the inner air trap to prevent it from escaping through the slot and the interrupted neck of the bottle. Furthermore, the plug has a central protrusion 3 to close the siphon against liquid flowing out of the bottle.
It is equipped with 4. When the cap is screwed in to this position,
When attached to a fluid bottle, the device can be transported and stored.

To use the device, the cap is screwed on to the position shown in Figure 1, and the bottle to which the cap is attached is inverted and suspended in the cistern of the toilet fixture.

When tipped over, fluid flows out of the bottle onto the top surface of the web 11 (as can be seen in Figure 1), but not in sufficient quantity to escape through the siphon, so that no fluid flows out of the dispenser.

Furthermore, the air in the starting chamber 31 is compressed by the head of water in the water tank and passes through the siphon to the air vent causing water to flow through the siphon and into the cap. The air compressed by the water head can escape through the air vent, since the air vent is long enough to be exposed to the surrounding atmosphere, but if this vent is covered with water from the aquarium, in this case the air can escape as bubbles. Eventually, the pressure of the air within the cap becomes sufficient to overcome the surface tension caused by the formation of the bubble. This pressure, and therefore the height of the void that remains trapped in the cap, is inversely related to the cross-sectional area of the air vent.

The bottle is filled with the fluid to be dispensed leaving a headspace so that the air forced into the air trap reaches the headspace (not shown) and forces the fluid into the cap. Water from the cistern flows into the siphon and cap to mix with and dilute the fluid. When flushing the aquarium, the water level in the aquarium decreases until it reaches a point where the head of fluid in the bottle can no longer be supported by the falling pressure in the headspace (if the bottle is initially tipped over, fluid will flow from the bottle into the cap). (You'll probably notice some leakage). As a result, fluid flows out through tube 23 into the cap, displacing liquid down the siphon tube. As the water level in the aquarium continues to fall, the air vent is exposed to the surrounding atmosphere and allows air to flow into the cap, allowing the liquid level in the cap to fall by gravity and flow out through the siphon.

However, when the water level in the cistern falls below the lower edge of the starting chamber (as can be seen in Figure 1), the liquid in the starting chamber drops suddenly and sucks the fluid in the siphon with it. Activate the siphon. Thus, during the period after the flush operation, fluid is injected into the aquarium. When the partial vacuum created in the headspace of the bottle is able to support the liquid head in the bottle, no more fluid is removed from the bottle. Thus, the siphon delivers a single dose of fluid in a flush operation. After the siphon has been emptied and the water level rises above the bottom edge of the annular wall 29 as described above, the partial vacuum in the head space of the bottle causes air to flow through the dispenser again into the hem space of the bottle.・l! to make the dispenser ready for the next operation. Therefore, when the water level in the aquarium falls again, fluid will be drawn out of the bottle again.

The dispenser shown in FIGS. 2-5, which is the presently preferred form of the invention, is generally the same as the device of FIG. 1, and like reference numbers in both figures represent like parts. . The can knob comprises a sleeve 41 formed with diametrically opposed triangular teeth 43 forming the cam surface, and complementary teeth 45 formed on the 11th part of the bottle. . The inner surface of the wall of the cap surrounding the neck is smooth with the exception of an annular bead 46 formed on the inner surface of its tip, which is attached to the neck of the bottle to hold the can knob in place on the neck of the bottle. is formed or fitted such that an annular rib 47 permanently engages a bead 46 on the can knob wall. In addition, two further annular beads 48 and 50 are formed or fitted in the neck, and both of these beads are interrupted at, for example, 52 to form air vents 1 to τ. (See Figure 2).

The plug in this embodiment is formed so as to receive the section 51 of the tube 13, but to create an axial hole 49 of greater axial length than the section 51; The axial hole 53 is interrupted so that air or liquid can flow between this axial hole 53 and the section 51 of the tube 13.
You can pass between.

Similar to the embodiment of FIG. 1, the plug also connects to the inside of the bottle.
There is an exit between the
This outlet is in the form of a tube 55 formed in the plug, and the inner air trap in this embodiment includes an inner boss 57 formed in the plug and connected to the tube 55 at the closed end of the tube 55. It has become Theba to reach.

In the embodiment of FIG.
``Rotation from the inactive position to the activated position engages the respective cam surfaces and forces the cap axially outward of the neck to the position shown in FIGS. 4 and 5.

The cap may be formed as a one-piece molding of plastic material, or it may be divided into component parts that are formed separately and then assembled.

In the second embodiment, the air trap has a bottom edge 59 of its radially outer wall 60 (visible when the dispenser is inverted) and a bottom edge 62 of the inner siphon tube 64 (visible when the dispenser is inverted). so that this bottom edge 59 is spaced apart from the surface of the residual liquid in the cap after the siphon has been emptied.
As a result, the air subsequently flowing into the dispenser can reach the air vent without bubbling into the residual liquid. In this way, smoother air flow is achieved,
Helps avoid the pumping effect of bottles when made of thin-walled plastic materials due to the action of turbulent liquid in the inner air trap.

In FIG. 6, such a bottle (in this case made of transparent material and indicated generally at 63) is shown with an inner stiffening member or stay 65. In FIG. The stay is preferably formed integrally with the bottle by extrusion/blow molding of a suitable plastic material. As can be seen in FIG. 6, the stays are integral with the bottle wall 67 at diametrically opposed positions.

When using the preferred embodiment, the consumer will be able to
゛Rotate. This causes the bead 46 of the cap to first fit into the bead 47 of the neck, and then the bead 47 of the neck.
8 and insert it between beads 4 and 50 on the neck. This clearly indicates to the consumer that the cap has been rotated the required amount. The consumption then reverses the puncture and immerses the bottle into the aquarium so that the bottom of the bottle remains substantially level with the top edge of the aquarium tank (not shown). This can be done with a suitable lip.

As previously discussed, the head of fluid in the bottle causes fluid to flow into the dispenser and collect around the siphon tube. At the same time, water flows in from the aquarium and forces air out of the dispenser, first through the air vent, until the water level rises and traps the air in the air trap, forcing air into the bottle and creating a partial vacuum in its headspace. Remove.

Thus, fluid exiting the bottle is diluted with water in the aquarium, and the air trap and the labyrinth nature of the passageway to the outlet of the siphon tube prevent the dilution fluid from dispersing into the aquarium. At this time, the dispenser is in a stable state and ready for its initial operation. When flushing the aquarium, the external pressure of the water drops and the head of liquid in the bottle becomes larger than the partial vacuum can support, so the contents begin to descend through the air trap and into the dispenser. This displaces liquid down the siphon tube, which initially is only aquarium water that has flowed into the siphon tube upon soaking the pack. When the falling water level exposes the air vent and reopens the outlet for air passage, the dispenser begins to discharge and the diluent fluid flows out of the siphon tube, but the siphon itself is not yet acting as a siphon. As the water level then falls and leaves the level of the bottom edge of the siphon starting chamber in the inverted position, the diluent fluid continues to be discharged by its pressure head until the level falls below the top of the siphon tube. The siphon is then actuated, its action being facilitated by the drop of liquid in the siphon initiation chamber. The siphon continues to operate until air enters the siphon. As a result of this operation, a -batch amount of active fluid is dispensed into the aquarium during the latter period of the flush cycle.

When the aquarium is now full again, the rising water level forces the water from the aquarium through the siphon and into the dispenser again.

This forces air 2 through the air vent while water bubbles through the residual liquid in the dispenser. This opening is spaced from the surface 61 of the dispenser sufficiently far from the surface of the residual liquid in order to thereby disturb the surface of the liquid and to prevent the liquid from surrounding the opening of the inner air trap. It is positioned by sticking out.

Otherwise, the liquid surrounding the air trap opening tends to force air into the bottle and unnecessarily dispense excess mixture. The sequence of operations described above then occurs again to bring the dispenser into a stable state and ready for further operation. However, the headspace in the bottle has increased due to some of the mixture being dispensed from the bottle, allowing a slightly larger amount of air to enter the headspace. This occurs with each successive actuation until a point is reached where the air trap is supplying air to its maximum capacity into the headspace. When this occurs, diluent fluid from the dispenser is also forced into the bottle and acts to dilute the fluid in the bottle.

However, this effect is compensated by a greater amount of diluent fluid being dispensed from the bottle with each successive operation due to the reduced head of fluid in the bottle. Thus, the dispenser delivers increasing amounts of fluid;
This fluid becomes progressively thinner itself. Therefore,
The overall effect is that the dispensing amount of the fluid itself, ie, the contents originally in the bottle, remains substantially constant throughout the run.

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional view of a fluid dispenser according to the invention shown mounted on a bottle; FIG. 2 shows a further fluid dispenser according to the invention and a bottle adapted for use therewith; Figures 3, 4 and 5 are front and side sectional views of the bank, with Figure 3 showing the dispenser in the closed position and Figures 4 and 5 showing the dispenser in the closed position; 6 shows the dispenser in an open position; FIG. 6 is an elevational view of a bottle according to the invention. DESCRIPTION OF SYMBOLS 1... Cap, 3... Female thread part, 5... Part of bottle, 7... Circumferential bead or rib, 9... Circumferential bead, 13... Central tube, 15... Siphon , 17・
... Plug, 19 ... Sleeve, 21 ... End wall part,
23... Inlet/outlet pipe, 25... Air trap, 31...
・Siphon starting chamber, 33... Annular rib, 34...
Central protrusion.

Claims (15)

[Claims] (1) In use, a controlled dose of fluid is provided each time the aquarium is flushed, with a content supply tube 55 adapted to open into the interior of the bottle 5 at one end and forming an air trap 57 at the other end. In a fluid dispensing device for dispensing liquid from an overturned bottle 5 into an aquarium, a chamber opening at the end of an air trap 57 of a content supply tube 55 and an outlet port 13 on the outside of the fluid dispensing device A fluid dispensing device further comprising a siphon 15 connecting said chamber to an external surface of the fluid dispensing device above the outlet port 13. (2) It is equipped with a plug member 17 that is adapted to be fixed to the opening of the bottle 5 during use, and the content supply pipe 55
A fluid dispensing device according to claim 1, characterized in that a is formed on the plug member 17. (3) The cap member 1 is further provided, and the cap member is fitted into the plug member 5 to form the chamber, the siphon 15 and the air vent between these two members. Characteristic Claim No. (
The fluid dispensing device according to item 2). (4) The cap 1 is the first one in which the fluid dispensing device is not activated.
Fluid dispensing device according to claim 3, characterized in that it is arranged on the plug 5 so as to be movable between this position and a second position in which the fluid dispensing device is activated. (5) internal seals 33, 34, which seals the cap 1 and/or when the cap 1 is in said first position to close the siphon 15 and the air vent to prevent passage of fluid from the bottle; 4. Fluid dispensing device according to claim 4, characterized in that the or plug (5) is provided with respective interengaging surfaces. (6) Claims (1) to (5) characterized in that the end of the air trap 57 that opens into the chamber is located above the point where the siphon 15 opens into the chamber.
A fluid dispensing device according to any of paragraphs. (7) Any one of claims (1) to (6), characterized in that the siphon propagation chamber 31 is formed at or toward the outer end of the siphon 15. A fluid dispensing device as described in. (8) A fluid dispensing device according to claim (9), characterized in that the siphon propagation chamber (31) is defined by the outer upright peripheral wall (29) around the outlet port (13). (9) The fluid dispensing device according to claims (1) to (8), characterized in that it is used in combination with a bottle 5 that holds the fluid to be dispensed. (10) The bottle has a threaded neck, and the cap has a female thread 9 for screwing the cap onto the neck.
A fluid dispensing device according to any of the claims dependent on clause 1 or 3. (11) The cap 11 is constrained by forming an inwardly directed annular rib or bead 9 on the cap 11 so as to overcome the circumferential rib or bead 7 of the neck of the bottle. range number (10)
). (12) The bottle is formed with a neck having a cam surface 45 and the cap is formed with a complementary cam surface 43, and when both surfaces 43, 45 are displaced in the circumferential direction, the cap 1 The first case where the fluid dispensing device does not operate
position and then relative rotation of the neck and cap 1 to assume the second position, so that one cam surface 43, 45 rides axially on the other cam surface to bring the cap 1 into the neck of the bottle. Claims (9) or (4) characterized in that the fluid dispensing device is able to be displaced against and put into operation.
) Fluid dispensing device according to any claim dependent thereon. (13) The cap 1 is held on the neck by circumferential ribs 47, 48, 50 formed on the neck of the bottle so as to act on the inner surface of the bottle.
The fluid dispensing device according to item 2). (14) Ribs for fixing the cap 1 to the bottle 5 and/or
Alternatively, an air vent is formed between the cap and the bottle by providing one or more axial slits 52 in the threaded portion.
) to (13). (15) Bottle 5 for use with a fluid dispenser characterized in that it is provided with an internal stay made integral with the bottle and extending between diametrically opposed positions or other means to make the wall of the bottle more rigid. .