US3254807A

US3254807A - Atomising discharge valves

Info

Publication number: US3254807A
Application number: US346632A
Authority: US
Inventors: Boch Robert Francisque Eugene; Rios Euclydes Antonio
Original assignee: Quimica Rhodia Brasileira Co
Current assignee: Quimica Rhodia Brasileira Co
Priority date: 1959-08-05
Filing date: 1964-02-24
Publication date: 1966-06-07
Anticipated expiration: 1983-06-07
Also published as: GB1036801A; FI40564B; NL267775A; NL6402223A; SE303176B; GB891055A; NL254551A; FR80133E; DK113069B; FR85389E; US3104061A; GB920963A; BE644793A

Description

June 7, 1966 R. F. E. BocH ETAL 3,254,807

ATOMISING DISCHARGE VALVES Filed Feb. 24, 1964 Rober/NTE /3oa.f1/ logcs ,4 l'os Inventor orney United States Patent O 3,254,807 ATOMISING DISCHARGE VALVES Robert Francisque Eugene Boch, Sao Paulo, and Euclydes Antonio Rios, Santo Andre, Brazil, assignors, by mesne assignments, to La Companhia Quimica Rhodia Brasileira, Santo Andre, Brazil, a corporation of Brazil Filed Feb. 24, 1964, Ser. No. 346,632 Claims priority, application Brazil, Mar. 6, 1963, 147,427 4 Claims. (Cl. 222-394) This invention concerns atomising discharge values for containers -of pressurised liquids and has for one object to said cap, a valve seat located in an axially fixed position within said 4bore of said cap and defining with the latter ra chamber communicating with said discharge nozzle, such seat having a bore which emerges into said chamber and is adapted, in use of the valve, to be placedin communication with the liquid in the container, a resilient valve member formed separately from the cap and mounted in the latter at the upper part of said chamber and aligned with said valve seat, a lever pivoted to said cap externally thereof, and a boss on said lever which passes through said aperture in said cap and bears on said valve member, said lever being biassed so that said boss normally applies pressure to said valve member to distort the latter against the valve seat and close the bore therein, but capable of being pivoted against such biasing to release said pressure on said valve member.

The valves of this invention, having a separate resilient pad to form the valve head, makes for -an extremely simple manufacture and also improves the operation of the valve in that only a slight displacement of the lever is necessary to unseat the pad from the valve seat and thus release some of the contents of a container to which the valve is applied.

In order that this invention may be understood more readily the following description is given, by way of example, of one embodiment of the invention with reference to the accompanying drawings in which:

FIGURE l is a longitudinal section through the upper part of an aerosol producing liquid container incorporating a valve according to the invention; and

FIGURE 2 is a side elevation on a different scale of the upper part of the container and illustrating the operation of the valve.

As seen in FIGURE 1, the valve comprises a cap 1 sealed into the top of a container which is conveniently a conventional cylindrical container as shown but may be of any suitable desired shape, such cap including in its upper portion an aperture. On one side, the cap 1 is provided with a discharge passage 10. On the other side ofthe cap and mounted between two supporting lugs is a pin 7 on which is pivoted an angled lever 5. The lever is normally urged in a counter-clockwise sense, as seen in FIGURE 1, by a spring 6, so that a boss 4 on the lower side of the upper arm of the lever is urged downwardly through the aperture in the upper portion of the cap.

The cap 1 is also provided with a Ibore into which is fitted a disc-shaped resilient pad 3. This pad is held in place against the underside of the upperportion of the cap 1 by raised shoulders at the top of a plug 2 which is l 3,254,807 Patented June 7, 1966 ICC tightly fitted into the bore in the cap. At its upper part the diameter of the plug 2 is reduced to form an annular cham-ber in communication with the passage lil and from the annular chamber fluid distributor ducts extend radially inwardly to a raised central valve vseat slightly below the level of the said shoulders. Thus fluid can be fed from the valve seat to the discharge passage 10 whatever the orientation of the plug 2. The plug 2 has, at its lower end, a downwardly extending central spigot having a central bore in which is fitted a dip tube 9. To provide fluid communication between the dip tube and the centre of the valve seat, the main portion of the plug 2 has a central bore havingl a restricted neck portion.

The action of the spring 6 ou the lever S is to urge the boss 4 downwardly onto the pad 3 and force the latter into fluid tight engagement on the valve seat. The side arm of the angled lever 5 is ribbed to facilitate pressing of the lever with the finger.

Fitted into cap 1 is an independent hollow plug assembly which comprises an atomising diaphragm 11, an apertured delivery regulating diaphragm -12 and an assembly plug 13. These elements may each form a separate part which is manufactured separately, or a plurality of them may :be combined in a single part. Thus the assembly consisting of the three elements may be obtained by blowing a 4bulb of plastics material having suitably calibrated orifices and a suitably calibrated engaging skirt. Alternatively, as shown in the drawings, the delivery regulator is a metal diaphragm 12 inserted in the plug 13, the rigidity of which it ensures at the level of the anchoring zone.

According to the latter form of realization, the plug 13 is made of injection-moulded synthetic materiaLthe atomising orifice 11 is not open lbut only outlined in the form of a blind hole of a form suitable for the jet desired and carrying, if so desired, the well-known helical grooves. This blind hole terminates in a protuberance 13b of the plug. A groove 13a determines a weakening zone and enables the atomising orifice to be opened at the appropriate level either by breaking off or lby cutting off the protuberance. An arrangement such as this ensures the inviolability of the container, which remains hermetically sealed as long as the protuberance 13b has not been detached.

This method of fixing the plug 13 is unimportant; it may simply be tted in, screwed in, welded, cemented, set or anchored by pins or a bayonet device. According to a preferred constructional form, the fixing is obtained by anchoring which gives an inviolable assembly without requiring any special tools.

As has been said above, the device according to the invention permits the filling of containers already equipped with their valve. injection tube of the metering pump to the lateral orifice 10 of the cap 1; the fluid lifts the sealing element from its seat and penetrates into the container, which has previously been freed of air in accordance with the usual technique.

The spring 6 which ensures the fluid-tightness of the valve can Abe placed in position after filling and the drawing shows a type of spring particularly simple to insert in a valve which has already been assembled. It should be observed, however, that the presence of a spring in no way prohibits the filling. In fact, the pressure exerted by the metering pump below the sealing diaphragm is applied to a surface much larger than the area of the orifice of the valve and the result is a thrust on the lever much greater than that which must normally balance the spring. Under these conditions, the valve recloses automatically after filling Iand the ycontainer can be subjected directly to the usual tests, such as warm water bath, before the plug 13 is placed in position.

To this end, it is sufficient to fit the.

In order to operate the valve, once the atomising oriice 11 is opened, pressure is exerted on the side arm of the lever thereby compressing the spring 6. Thus the fboss 4 is raised and the resilient pad 3 is unseated from the seat at the top of plug 2 by the pressure of the pressurised liquid in the container. The liquid then passes through the radial ducts into the annular cham-ber through discharge passage and emerges through the atomising orilice 11 as a ne spray.

To close the valve, the side arm of the lever is released and the spring 6 urges the lever in a counter-clockwise direction, as seen in FIGURE l, and the boss d passes the pad 3 back into sealing engagement with the valve seat.

We claim:

1. An atomising discharge valve comprising: (a) a cap having a bore therein, (b) a discharge plug assembly projecting laterally outwardly from the side of said cap and communicating with the upper end of said bore in the cap said Iassembly inclu-ding a hollow body, two opposite ends to said body, a discharge nozzle at one said end of said body and a delivery regulating apertured diaphragm at the other said end, said other end being securable to said cap, (c) a wall integral with said cap and forming the top of the latter, (d) said wall having an axial aperture therein, (e) a plug fitted xedly in the lower end of said bore in the cap so as to be spaced below said top-forming wall of the cap, (f) said plug having a vertical central bore extending completely therethrough', (g) a valve seat on said plug at the upper end thereof and having a bore communicating with the bore in said plug, (h) a resilient valve member of disklike conguration formed separately from said cap and plug and disposed between sai-d top forming wall of the cap and the said valve seat, (i) said valve member being of greater dimensions than both the bore in the valve seat and said aperture in -the top-forming wall of the cap and engaging said top-forming Wall of the cap to close said aperture therein, (j) a lever pivoted to said cap externally thereof at a position remote from said valve member, (k) an end on said lever and (l) the lever being biassed with said end normally projecting through the aperture in the top-forming wall of the cap and applying pressure t-o the valve member to press the valve member against the valve seat to close the bore therein, but being capable of being pivoted against such biassing to move said end out of contact with the valve member to release the pressure on the valve member.

2. A container for liquid under pressure, such container having mounted at the top thereof an atomising discharge valve comprising: (a) a cap having a bore there-on, (b) a discharge plug assembly on said cap and in communication with said bore, said assembly including a hollow body, two opposite ends to said body, a discharge nozzle at one said end of said body and a delivery regulating apertured diaphragm at the other said end, said other end being securable to said cap, (c) a wall integral with -said cap and forming the top of the latter, (d) said top-forming wall of the cap having an yaperture therein, (e) a plug ixedly in the lower part of said bore in said cap, (f) said plug having, a through bore which at one end enlarges into a recess, (g) a tube iitted into said recess and extending downwardly into said container, (h) a dished valve seat in said plug and a bore in said valve seat communicating with said through bore in said plug, (i) said seat defining with said cap a chamber communicating with said discharge nozzle, (j) a resilient valve member of disk-like configuration formed separately from said cap and plug and of dimensions greater than bot-h the bore in the valve seat and the aperture in said top-forming wall of the cap, (k) said valve member being disposed in said chamber and closing the aperture in said wall, (l) a lever pivoted to said cap externally thereof at a position remote from said valve member, (m) an end on said lever and (n) the lever being biassed so that said end normally projects through the aperture in the top-forming wall of the cap applying pressure to the valve member to press the valve member against said dished valve seat to close the bore therein, but being capable of being pivoted against such biassing to move said end out of contact with saidI valve member to release the pressure on the latter.

3. An atomising discharge valve comprising: (a) a cap having a Vertical bore therein, (b) `a separate integral discharge plug assembly projecting outwards from the side of said cap means defining a blind bore in said `assembly communicating with said bore in the cap, a closed end to said bore yand a thinned portion of said assembly and adjacent said closed end, (c) said assembly having an apertured diaphragm for discharge therethrough of liquid in the form of a spray, (d) a wall integral with the cap and forming the top of the latter, (e) said top-forming wall of the cap having an axial aperture therein, (f) a plug itted ixedly in the lower end of said bore in said cap, (g) said plug having a vertical through bore, (h) a dished valve seat formed on said plug and having a bore communicating with said vertical bore in said plug, (i) said valve seat dening with said cap a chamber communicating with said discharge plug assembly, (j) a resilient valve member of disk-like conguration formed separately from said plug and cap and having dimensions greater than both the bore in Vthe valve seat and the aperture in said top-forming wall of the cap, (k) said valve member being disposed within said chamber and closing said aperture in said wall, (l) -a lug projecting outwardly from the side of said cap opposite to said discharge plug assembly, (m) a lever pivoted to said lug at a position remote from said valve member, (n) a boss integral with said lever and projecting through said aperture, (o) said boss, valve member and valve seat being in alignment and (p) the lever being biassed so that said boss applies pressure to the valve member to press the Valve member against the said dished valve seat to close the bore therein, but being capable of being pivoted against such biassing to move said end out of con-tact with said valve member to release the pressure on the latter.

4. A container for liquid under pressure, such container being of a generally cylindrical form and having its top dened by an atomising discharge valve comprising:l (a) a cap having a vertical bore therein, (b) a separate discharge plug assembly projecting laterally outwardly from the side of the cap, means defining a blind bore in said assembly and communicating with said bore in said cap, a closed end to said bore and a thinned portion of said assembly adjacent said closed end, (c) said assembly having an apertured diaphragm for discharge therethrough of liquid in the `form of a spray, (d) a wall integral with said cap and forming the top of the latter, (e) said top forming wall of the cap havingan axial aperture therein, (t) a plug tted xedly in the lower end of said bore, (g) said plug having a vertical bore extending completely therethrough, (h) a recessed portion at the lower end of said plug communicating with said vertical central bore, (i) a tube fitting into said recess and extending downwardly into said container, (j) a dished valve seat formed in said plug and having a bore communicating with said Vertical bore in said plug, (k) said valve seat dening with said cap a chamber 'communicating with said discharge plug assembly, (l) a resilient valve member of disk-like conguration formed separately from said plug and cap, and -having dimensions greater than both the bore in the valve seat and the aperture in said topforming wall of the cap, (m) said Valve member being disposed within said chamber and closing said aperture in said wall, (n) a lug projecting outwardly from the side of said cap opposite to said discharge plug assembly, (o) a lever pivoted to said lug at a position remote from said valve member, (p) a boss integral with said lever and projecting through said aperture, (q) said boss, valve member and valve seat being in alignment and (r) the 2,586,575 2/ 1952 Smye 169-31 lever being biassed so that said boss applies pressure t0 2,772,744 12/1956 Beadet 169 31 the valve member to press the valve member agalnst the 2,982,448 5/1961 Leonard et al. 222 153 said dished valve seat to close the bore therein, but being capable of being pivoted against such biassing to move 5 said end out of Contact with said valve member to release the pressure on the latter. FOREIGN PATENTS 627,709 8/ 1927 France. 100,706 1/ 1941 Sweden.

RAPHAEL M. LUPO, Primary Examiner.

3,085,720 4/1963 BDCh et al.

References Cited by the Examiner UNITED STATES PATENTS 10 2,530,583 11/1950 Nurkiewicz 169-31

Claims

1. AN ATOMISING DISCHARGE THE VALVE COMPRISING: (A) A CAP HAVING A BORE THEREIN, (B) A DISCHARGE PLUG ASSEMBLY PROJECTING LATERALLY OUTWARDLY FROM THE SIDE OF SAID CAP AND COMMUNICATING WITH THE UPPER END OF SAID BORE IN THE CAP ASSEMBLY INCLUDING A HOLLOW BODY, TWO OPPOSITE ENDS TO SAID BODY, A DISCHARGE NOZZLE AT ONE SAID END OF SAID BODY AND A DELIVERY REGULATING APERTURED DIAPHRAGM AT THE OTHER SAID END, SAID OTHER END BEING SECURABLE TO SAID CAP, (C) A WALL INTEGRAL WITH SAID CAP AND FORMING THE TOP OF THE LATTER, (D) SAID WALL HAVING AN AXIAL APERTURE THEREIN, (E) A PLUG FITTED FIXEDLY IN THE LOWER END OF SAID BORE IN THE CAP SO AS TO BE SPACED BELOW SAID TOP-FORMING WALL OF THE CAP, (F) SAID PLUG HAVING A VERTICAL CENTRAL BORE EXTENDING COMPLETELY THERETHROUGH, (G) A VALVE SEAT ON SAID PLUG AT THE UPPER END THEREOF AND HAVING A BORE COMMUNICATING WITH THE BORE IN SAID PLUG, (H) A RESILIENT VALVE MEMBER OF DISKLIKE CONFIGURATION FORMED SEPARATELY FROM SAID CAP AND PLUG AND DISPOSED BETWEEN SAID TOP FORMING WALL OF THE