MXPA98002339A - Sprayer that works the right / invert - Google Patents

Abstract

A sprinkler with manually operated liquid pump is capable of being used in both right and inverted positions without leakage through the ventilation port by providing an auxiliary input passage that includes an inlet port in the path of a valve. slide. In accordance with an example, a ventilation port is similarly positioned in the path of that slide valve. The ventilation port is open while the inlet port is closed while the slide valve is in the attitude to the right of the sprinkler, while the opposite is effected by the slide valve when the sprinkler is operated in an inverted position. According to another example a second slide valve is placed inside the pump body to discover the inlet port that is in the pump cylinder in the position to the right of the sprinkler and to discover that ventilation port in the inverted position for avoid fug

Description

SPRAYER THAT WORKS THE INVESTED RIGHT BACKGROUND OF THE INVENTION This invention relates generally to a sprayer capable of being operated effectively during pumping in both the right and inverted positions without leakage through the ventilation passage of the container which is sealed and closed in the inverted position. through the provision of a slide valve.

Such sprinklers of this general class are known, as presented in U.S. Patent No. 5,467,901 in which a ball check valve is movable along a secondary passage communication with a primary input passage to a chamber. pumping. In the down and inverted positions, the ball valve rests against a second valve seat in a vent passage to open the second passage. In the right position the ball valve rests against a valve seat in the secondary passage to open the ventilation passage.

The secondary inlet passage and opposing ball valve seats are, however, integrally formed with the pump frame thus requiring special molding of a part or parts of the sprinkler assembly that only increases the cost of production and sprinkler assembly. In addition, often a ball check valve does not rest fast enough or hard against its ball seat unless its travel distance to an open position in the opposite direction to its valve seat is limited, or less. that the ball check valve is driven to spring closure.

Automatic dispensers having a side valve are also known which in a right position during the distribution operation closes an auxiliary input port in the primary inlet passage leading to the pump chamber. In an inverted position of the automatic distributor, the slide valve discovers that entrance port, placed near the upper end of the container, thus admitting that the product enters the primary entry passage to effect the distribution while it is inverted.

Instead of a ball valve, Australian patent 208597 provides a sleeve valve that changes axially under the force of gravity when the automatic distributor is inverted to discover an auxiliary input port in the dip tube to facilitate liquid distribution stored under pressure.

U.S. Patent No. 2,792,974 discloses an automatic liquid pumping dispenser having a central inlet tube as well as separate immersion tubes for right and inverted use. The immersion tubes are mounted on a sleeve that changes axially under gravity on a central tube to discover alternative entrance ports. In the right-hand mode, the sleeve rests on a conical lower portion of the central tube.

U.S. Patent No. 4,019,661 discloses a slide valve for an automatic dispenser as described above generally.

The known slide valves, however, only function to cover and discover an auxiliary input port in right and inverted attitudes of the automatic distributor. Thus, for those automatic distributors that have a passage of ventilation of the container to avoid the empanelado and the hydraulics fixation during the pumping, the product will leak through the open ventilation passage during the operation of supply while the automatic distributor is in an attitude different to the substantially right.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a hand-operated liquid sprayer capable of being operated in both the right and inverted positions, without leakage, by the provision of a slide valve that changes under gravity in a inverted position of the sprinkler to close the ventilation passage to avoid leakage of the product through the ventilation path. The changing slide valve that controls the opening and closing of the ventilation is, according to an example, a single slide valve that likewise opens and closes an auxiliary entrance. According to another example, separate slide valves are provided to control the auxiliary inlet and ventilation.

The ventilation passage of the container, which includes a ventilation port, rests in the path of the changing slide valve so that it opens and closes therefore in the inverted and right positions of the sprinkler.

The vent port may be located in a pipe retainer of the pump body that suspends the dip tube that extends inside the container, or the vent port may be placed in a seal joint provided between the pump body and the neck of the container. In these two versions a single slide valve is provided which has a flank that covers the ventilation port in the inverted position. The valve may otherwise have internal and external sleeves that respectively close the inlet port and the vent port in the right and inverted positions.

Otherwise, first and second slide valves may be provided, the first one closes the inlet port of the auxiliary liquid inlet passage leading to the first vent passage, in a right position, and opens that port in an inverted position to allow spray it regardless of the attitude of the sprinkler. The second shut-off or slide valve can be placed inside the pump body to close a vent port in an inverted position of the sprinkler to prevent leaks along the vent passage and through that port when spraying in a position other than a substantially right one.

The second slide valve is guided within a vent passage of a pump body without rotation around its central axis to ensure that the port closes effectively and rapidly during each inverted spray. The ventilation passage has opposite flat walls, and the second slide valve is formed complementarily. The ventilation passage that has said guide is an existing structure that does not require modifications or tooling of the sprinkler with improved pump according to the invention.

Other objects, advantages and novel features of the invention will be more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a lateral elevational view, in section in its majority, of a specimen of a trigger sprinkler incorporating the invention; Figure 2 is a view of part of the sprinkler with trigger of Figure 1, in vertical section, illustrated in its inverted position with the slide valve having the ventilation port.

Figure 3 is a side elevational view, in section in its majority, of another example of a trigger sprinkler incorporating another example of the invention; Figure 4 is a view similar to Figure 3 of a sprinkler with a similar trigger that still incorporates another specimen according to the invention; Figure 5 is a sectional view taken substantially along line 5-5 of Figure 4; Y Figure 6 is a view similar to Figure 4 of the sprinkler with trigger in its inverted position with the vent port closed.

DETAILED DESCRIPTION OF THE INVENTION Referring now to the drawings in which similar reference characters refer to similar and corresponding parts in all the various views, a copy of the invention is shown in Figure 1 assembled to a trigger-operated sprinkler generally designated 10 having a pump body 11 with a closure 12 for mounting the sprinkler to the neck of the container 13 of liquid to be sprayed. A pipe retainer 14 is attached to the body of the pump as in 15, its flank 16 covering the edge 17 of the neck of the container. A joint seal (not shown) may lie below flank 16.

The pump body has a pump cylinder 18 in which a pump piston 19 is reciprocal in slidable seal coupling to define with them a variable volume pump chamber 21. The piston can be mounted on the upper end of a pump. elongated post 22 having a flank 23, a return spring of the piston 24 extending between this flank 23 and an upper closing portion of the pump body to spring the piston elastically out of its cylinder.

A trigger actuator 25 is mounted rotatably to the pump body in some normal manner, and has a split arm 26 in contact with the underside of flank 23.

The pump body has a discharge passage 27 which extends from the pump chamber through which the product is discharged from a discharge orifice (not shown) positioned in the cap with nozzle 28. An entry passage 29 It is formed in the post 22 and has a valve as in 31 for the valvulaje of the product inside the pumping chamber during each suction stroke of the automatic distributor. The valve 31 may have the shape of a satellite valve having connected legs formed integrally with the piston, although a flange valve or a ball check valve or the like could also be provided without departing from the invention.

The post has a vent valve for the dependent container 32 which may be in the form of a downwardly diverging lip seal sometimes called a chevron seal in slide seal engagement with the wall of a cup member 33 of the tube retainer. Formed on the inner wall of the cup member is one or more longitudinal grooves 34, or equivalent ventilation ribs, and the bottom wall of the cup has one or more vent ports 35 formed therein.

The tube retainer has a retainer sleeve 36 that suspends an insertion tube 37 that extends into the container and is normally wound against the bottom wall of the liquid container, as is known in the art. A primary fluid path is established through the tube being immersed, longitudinally through the tube retainer and along the passage 29 within the pump chamber.

According to an example of the present invention, an auxiliary fluid inlet passage is established by the provision of an inlet port 38 which may be placed in the sleeve 36 at the upper end of the interior of the container. A slide valve 39, in the form of a single sleeve that surrounds the sleeve 36, and having a transversely extending flank 41 at one end, is capable of sliding between the bottom wall 42 of the pipe retainer and a brake 43 formed in the sleeve 36, said brake may have the shape of an outer flank.

In operation, the slide valve 39, in the right position of the sprinkler of Figure 1, rests against the brake 43 and covers the secondary inlet port 38 so that, during pumping after the action of the trigger, product is expelled. from the pumping chamber through the discharge passage. During each pressure stroke the chevron vent valve is juxtaposed with the ventilation groove 34 to thereby establish an open ventilation path from the atmosphere inside the container via the ventilation port 35. Thus, the product expelled from the container from the container during pumping is replaced with air to avoid a condition of subatmospheric pressure inside the container thus preventing the container from enpanele and a hydraulic fixation of the piston. At the end of each suction stroke, the vent valve 32 essentially returns to the position illustrated in Figure 1 where it reseals with the inner wall of the cup retainer cup 33, to seal the ventilation passage as it is during Freight and storage conditions to prevent leakage of the product through ventilation.

In an inverted attitude of the sprinkler as illustrated in Figure 2, the valve 39 changes by gravity to a support coupling with the wall 42 thereby discovering the inlet port 38. Since the inlet port is located in the vicinity of the The upper end of the interior of the container, the product is attracted into the primary entry passage through port 38 during each stroke of suction of the piston which allows pumping without ingesting air into the pumping chamber as would be the case if the free end (not shown) of the dip tube was no longer immersed in the liquid inside the container in the position of Figure 2.

Also, in the inverted position of Figure 2, the vent port 35 is covered by a satellite valve to prevent product leakage through the vent passage during pumping while the trigger is driven with the sprinkler fully or partially inverted. .

When the trigger is to the right again as in Figure 1, the satellite valve simply slides back under the force of gravity to a support coupling with the flank 43 to close the inlet port 38 and to reopen the port of ventilation 35..

A trigger sprinkler generally designated 44 in Figure 3 incorporates another example of the invention incorporated therein. The details of the trigger sprinkler are presented in U.S. Patent Nos. 4,747,523 and 5,507,418, the common property herewith being the entire contents of the findings of which are specifically incorporated herein by way of reference.

The trigger sprinkler 44 has a pump body 45 mounted on a container 46 by the provision of a container closure 47, with a seal seal intervening 48.

A tube retainer 49 is fixed to the pump body, and suspends a tube adapter 51 which in turn suspends a dip tube 52 which extends inside the container 46 as it is a shape and with the purpose known in the art. .

The tube retainer 49 has an outer flank 53 that supports the seal seal in a central opening 54 thereof, which, unlike that presented in the patent 5,507,418, is circular and tightly pressed against the surrounding portion of the retainer of tubes.

A trigger actuator is hinged to the pump body in some known manner, and functions to reciprocate the pump piston 56 within its cylinder bore 57 to dispense liquid from the pump chamber through the discharge passage and out to through the discharge hole placed in the cap with nozzle. The cylinder of the pump has a ventilation port 58 formed in its wall that establishes a ventilation passage inside the container via another ventilation port 59 which, according to the invention, is placed in the seal seal. The vent passage opens to the atmosphere during pumping as a vent seal 61 on the piston deforms during each of the pressure shocks as it juxtaposes to one or more longitudinal ventilation ribs 62 placed on the interior wall of the anima of the cylinder, as described in greater detail in the patent 4, 747, 523.

According to the second exemplary embodiment of the invention, an auxiliary fluid inlet passage is established by the provision of an inlet port 63 that can be placed in the tube adapter 51 in the conical section 64 thereof and in the vicinity of the upper end of the interior of the container.

The slide valve 65 has an inner sleeve 66 with a conical section corresponding to that of section 64, and an outer sleeve 67. The outer sleeve is of a diameter to be in alignment with the ventilation port 59, and spaced from the same as in the open ventilation condition of Figure 3.

In operation, the slide valve 65 covers the inlet port 63 while the sprinkler is operating in its right position in Figure 3. Liquid is ejected from the sprinkler during each depression of the trigger, and air is swallowed into the interior of the pumping chamber during each piston suction stroke as the liquid flows through the inlet passage established by the dip tube, tube adapter and tube retainer. And, since the dip tube is stationary, the slide valve 65 remains separate from the ventilation port 59 so that during each of the pressure shocks the vent passage is opened to establish ventilation of the interior of the container from the atmosphere through the open ventilation passage.

While pumping during an inverted attitude of the trigger sprinkler, the slide valve changes under gravity until its outer sleeve 67 rests against the underside of the seal seal. Since the ventilation port 59 is in alignment with the outer sleeve, the ventilation passage is thereby closed, and the ventilation port 63 opens correspondingly. Thus, during pumping, liquid is ingested into the pumping chamber via the auxiliary inlet passage through the open inlet port 63 which is positioned in the vicinity of the upper end of the interior of the container. At the same time any leakage of the product through the passage is prevented by the outer sleeve of the slide valve which now blocks port 59.

Figure 4 shows a trigger sprinkler that is essentially the same as the one illustrated in Figure 3, except that Figure 4 still incorporates another example of the present invention.

Unlike Figure 3, the seal seal 68 of the example of Figure 4 has a central opening 69 of rectangular shape, similar to that presented in the Patent of the United States number 5,507,418. Thus, when the opening 69 surrounds the circular portion of the lower end of the tube retainer 15, four ports (not shown) are formed in the four corners of the rectangular central opening.

The pump cylinder 71 has ventilation port 59 formed in its wall as part of a ventilation passage extending through a hollow section 73 of the pump body (see also Figure 5) and in communication with the interior of the container via the port established in the seal of board in the four corners described above. The vent passage opens to the atmosphere during pumping as the vent seal 61 on the piston deforms during each pressure stroke as it is juxtaposed through one or more longitudinal ribs 62 (or longitudinal grooves) placed on the inner wall of the cylinder bore, as described in greater detail in U.S. Patent No. 4,545,523.

As in the example of Figure 3, an auxiliary liquid passage is established by the provision of the inlet port 62 placed in the tube adapter 51 in the conical section 64 thereof and in the vicinity of the upper end of the interior of the container .

In accordance with the invention incorporated within the trigger assembly of the Figure 4, a first slide valve 74 is provided in the form of a sleeve having a conical section corresponding to that of the section 64 and surrounding the tube adapter 51 for sliding movement along the same between positions of Figure 4 and Figure 6. In the right position of Figure 4, the lower portion of the slide valve 74 engages tightly with the conical section 64 to cover the inlet port 63 so that the product during each of the pressure strokes between the pumping chamber via the dip tube and through the tube adapter which together comprise a primary liquid inlet passage.

A second copedera valve 75 is provided within the pump body of the trigger sprinkler of Figure 4. Specifically, the travel or slide valve 75 is mounted for slidable movement within the ventilation passage 72 which is delimited by the hollow section 73 of the pump body (see also Figure 5). The upper end 76 of the valve 75 is concave and is inclined to correspond to that of the cylinder 71. And the end 77 (Figure 6) of the outer flank 78 of the tube retainer 49 is placed in the path of the valve 75 and functions as a limiting brake to keep the valve in its position of Figure 4.

As illustrated in Figure 5, the valve 75 has opposed flat sides facing opposite flat side walls 79 of the section 73 to prevent any rotation of the valve 75 about its central axis during its sliding movement. And, the valve can have a longitudinal cut 81 at one end to maintain uninterrupted air flow through the open ventilation passage in the container at the position of the Figure 4 While being pumped during an inverted attitude of the trigger sprinkler, the second slide valve 75 changes under gravity until its concave and inclined end 76 rests against the convex and corresponding confronting inclined surface of the pump cylinder so as to dine the vent port 58. Since the vent port is in alignment with the solid portion of the valve 75, the vent passage closes as illustrated in Figure 6, while vent port 63 opens as the valve 74 changes to its condition of opening the ventilation port of Figure 6 under gravity.

From the present it can be seen that a simple and efficient valve arrangement and at the same time highly effective to facilitate the right and inverted spray has been developed by the provision of a single copedera valve or a pair of independent copedera valves. In the specimens of a single slide valve, the valve encloses an auxiliary input port and opens a ventilation port simultaneously during the spray while the automatic distributor is right, and simultaneously encloses the ventilation port and opens the port and auxiliary input while it is sprayed in an inverted attitude of the sprinkler. The ventilation and inlet ports are positioned in the path of the single slide valve, and modifications in the molding of the sprinkler are limited and a minimum number of parts is required in carrying out the invention.

As for the independent slide valves, one is provided to close and open one inlet port during the right and inverted spray respectively, and the other is provided to open and dine the ventilation port during the right and inverted spray respectively . Since the pump body does not need to be modified to accommodate the second gate valve 75, and since the seal seal is the same as in the prior art, the cost of adapting the known trigger sprinkler of Figure 4 is minimum. In addition to the tube valves, the only additional part required is a tube adapter.

Obviously, many other modifications and variations of the present invention are made possible in light of the above teaching. It should be understood therefore that within the scope of the appended claims, the invention can be practiced in a manner other than that specifically described.

Claims (12)

1. CLAIMS: 1. A sprinkler with manually operated liquid pump capable of spraying during pumping in a right position and in an inverted position, comprising a pump body having means for mounting the body to a container of a liquid to be dispensed, said body has a pumping chamber, means defining a primary liquid inlet passage extending to said chamber and means defining a liquid discharge passage extending from said chamber, the sprinkler has a ventilation passage for the container that includes a ventilation port that establishes communication between the interior of the container and the atmosphere during the operation of the sprinkler in 1 right position, an auxiliary liquid intake passage that includes an entrance port that extends between the interior of the container in an upper end thereof and said primary passage, characterized in that said primary inlet passage has valve means Rack door mounted on it for a sliding movement to dine the entrance port in the right position and to dine the ventilation port in the inverted position.
2. 2. The sprinkler according to Claim 1, wherein said primary inlet passage comprises a retainer for suspending a dip tube that extends into the container, further characterized in that said ports are placed in said retainer in the path of said valve means. .
3. 3. The sprinkler according to Claim 1, wherein said vent port is positioned on a wall of the pumping cylinder defining said fireman's chamber, said primary inlet passage comprising a retainer for suspending a dip tube that extends inside the container , further characterized in that said valve means comprise first and second slide valves that slide independently, said inlet port being placed in said retainer in the path of said first valve thus opening in the inverted position, and said port of ventilation is placed in the way of said second valve to be opened thus in the position to the right.
4. 4. The sprinkler according to claim 3, characterized in that said vent passage includes means for guiding said second valve its sliding movement.
5. 5. The sprinkler according to claim 4, characterized in that said guide means comprises a hollow section of said pump body having opposite flat walls, said second valve having opposite sides parallel to said flat walls.
6. 6. The sprinkler according to Claim 2, characterized in that said valves comprise a rake valve that closes said inlet port in said position to the right, said valve has a flank that surrounds said vent port in said inverted position.
7. 7. The sprinkler according to claim 2, characterized in that said valve means comprises a valve of the rafter having an inner sleeve that surrounds said inlet port in said position to the right, said valve has an outer sleeve that surrounds said ventilation port in said position. said inverted position.
8. 8. The sprinklers according to claim 6 or 7, characterized in that said retainer has a brake to place said railing valve when it closes said inlet port.
9. 9. The sprinkler according to claim 8, characterized in that said brake comprises an outer flank on said retainer.
10. 10. The sprinkler according to claim 8, characterized in that said retainer has a conical section defining said brake, a conical section of said valve rests against said brake in said position to the right.
11. 11. The sprinkler according to Claim 1, wherein said primary inlet passage comprises a retainer for suspending a dip tube extending within the container, and a seal seal is provided between said pump body and said container, characterized in that said port of entry is placed in said retainer and said port of ventilation is placed in said gasket in the path of said valve.
12. 12. The sprinkler according to Claim 11, characterized in that said valve comprises a gable valve having an inner sleeve that encloses said entrance port in said position to the right and has an outer sleeve that surrounds said ventilation port in said inverted position. EXTRACT OF THE INVENTION A sprinkler with manually operated liquid pump is capable of being used in both the right and inverted positions without leaking through the ventilation port by providing an auxiliary input passage that includes an entry port on the way of a gauge valve. In accordance with a specimen, a ventilation port is similarly placed in the path of that log-valve. The ventilation port is open while the inlet port is suppressed while the riser valve is in the attitude to the right of the sprinkler, while the opposite is effected by the riser valve when the sprinkler is operated in an inverted position. In accordance with another example, a second gate valve is placed inside the body of the pump to discover the inlet port that is in the pump cylinder in the position to the right of the sprinkler and to discover that ventilation port in the inverted position to avoid leaks.