US2645387A - Flexible tube discharge valve construction - Google Patents

Description

July 14, 1953 s. KAHN FLEXIBLE TUBE DISCHARGE VALVE CONSTRUCTION Filed June 16, 1950 1 Hill! FIG. 6 46 INVENTOR 80727;!!! Mb @TLJ, whom ATTORNEYS Patented July 14, 1953 1- UNITED STATES PATE OFFICE FLEXIBLE TUBE DISCHARGE VALVE CONSTRUCTION Samuel Kahn, Bridgeport, Conm, assignor, by

mesne assignments, to Maryland DevicesyInc Baltimore, Md, a corporation of Maryland Application June 16, 1950,Ser ialNo. 168,477

y 1 V I This invention relates to discharge valves and discharge valve assemblies for self-dispensing pressure-tight containers. More particularly, it is. concerned with a novel discharge valve the operating principlesof which are believed to be entirely new to discharge valves for self-dispensing pressure-tight containers and in which the discharge siphon tube common to most self- .dispensing pressure-tight containers is an integralpart f the valve. I

The heretofore most common and widely accepted type of discharge valve for pressure-tight containers, comprises a valve assembly adapted to be secured in an opening in the upper end of a pressure-tight container and including a pop- .pet valve spring urged into engagement with av valve seat and adapted to be unseated therefrom by a button extending upwardly from the valve andengageable by a userfs finger. A flexible diaphragm is normally secured to the valve assembly acro'ssthe upper end of the button.

whereby the users finger actually engages the fdiaphragm in order to operate the valve. Such a'valve assembly is normally very small in size relative to a usersfinger and is fairly fatiguing inauses Additionally; considerable difiiculty has i been encountered in obtaining a pressure-tight seal between the valve assembly and the container end wall, though one such valve which substantially eliminatesthis latter characteristie. is disclosed: in the copending application Serial Noh 161,835 offAbeO. Samuels, filed May -13, 1950. a p Among the objects of this-invention is the provision 'of a novel discharge valve which presents a relativ'ely large finger engaging surface'for operation thereof and which may be secured-in a pressure-tight container, so that leakage around itwill not result. 1 i

maintained pressed tightly against the lower portion of the .valve core in pressure-tight relation therewith, A passageway is formed in the side-wall of the valve core above that portion of the coreagainst which the flexible .'tube is tightly pressedandintersects.the upper end of the longitudinally+extending hole in the valve core.- An annular collarsurrounds the upper end of the valvecore'and the flexible discharge tube. and is adapted to v be .moved axially into 15 Claims. (c1.'22.2--394l and out of a position in whichit presses the flexible tube tightly against a portion of the valve core above the passageway through the valve core.- This annular collar is normally maintained in the position in which it so presses the flexible tube against the valve core by a is provided which overlies the discharge valve above described and supports -a nozzle around one end of which is secured the upper end of The cover is also provided with an opening in itsjtop through the flexible discharge tube.

which a valve actuating button extends. The lower-end of the button engages the top, or upper end, of the annular collar and by depression thereof the valve may be opened. This form of my invention is contemplated for use with pressure-tightcontainers containing gaseous fluids or liquids of low viscosity.

In another form a of my invention which is contemplated for use with more viscous mate,- rials such as whipped cream, shaving cream,

etc., the cover is provided with a ratherlarge passageway .theretl'irough the lower end; of

which surrounds or receives the upp r endof the annular collar and-the other end of which terminates in a notched flange. The number and'size of the notches in the notched flange may be varied in accordance with the nature of the material to be dispensed. I

For a better understanding of my invention reference may be made to the following more de-.

tailed description thereof in connection with the .formof, valve shown in accompanying drawings in which:

I Fig. 1 is a plan view of one found discharge valve or discharge valve assembly of my inven- ,tion secured to a pressure-tight container,

Fig. 2 is a sectionalview, in elevation, of the V Fig. Land shows the valve in closed'position, w

ing the valve assembly of Figs. 1 through 4, and

l. Fig. 6 is a'sectional view in elevation of 'a Fig. 3 is a perspective view of a valve core; -Fig. 4 is an enlarged fragmentary view of the valvein open position, I i

' the container and to haveits peripheralfflange interlocked with flange ll'of thevcoiitainerlinra seal-tight joint. Usually a sealing compound is to the upper portion of the discharge valve tube.

A compression spring 30 is provided to surround the annular collar and at its upper end engages the underface of flange 28 and at its lower end container cover member I2. Thus, the spring normally maintains the collar in its uppermost position thereby preventing the flowzof material, under pressure, through the discharge tube.

.A discharge valve cover member 3! overlies the above described structure and is provided with a flange 32 around its lower edge by which it is 5ecured to the container cover member l2 as by being crimpedinwardly thereagainst at several f'points '33. p A conventional nozzle 34 having an usedbetween flanges ll and=l-'3-to assure thatthe interlocking joint .formed thereby will be 1 pressure-tight. Container cover member l2'"has a-,central.opening. which is surrounded by an .integ'ral'fdepending 'flange '14, A flexible d-ischarge or siphon tub'efextends through this .opening. This'tube may be ma'de'oif any materiallso" long asit' is flexible, the only, limitation upon the material chosen for this-'purpose being thatlitsshould notbe one thatmight react with the contents or the container. Various plastics, or evenrubber, may be used for this purpose.

:A valve core l6 iscont'ained'within the flexible tube has its. lower "end, which is provided withan-annulari groove I 1,. received in the open- :ing in container 'cover'member l 2' and surrounded byfiange' l4. "'The'flange M' is-crimped ;in"at 1'8 .to;.-pr,ess.the flexible tube tightlyinto annular ,groovef H of' theyalvewcore" to j form a pressuretight 'seal.. between. thetube and 'the valve core. :A hole orijbore 19 extends longitudinally into the valves-core fromxthe lower end thereof terminatingraesubstantial distance above-the lower end. annularflchann'el 2 Ois'forme'd in the valvecore opposite. the upper end-"of 'ho-le l9 and" a passagewayf 2l,;places the"upper"end of-the hole l'9 in icommunication' with 'ch'annelZ-O. A tapered-valve V seatZZ is formed on :the outer' 'sur'face o'f the valve core above "channel-29. The upper 'end'.i23 oi the valve corej isof "a" slightly greater diameter that, the remainder thereof'or than-'is'the interior of .the flexible tube and therefore it en'gagesii-the inner. wall. of the tube rather tightly. A vnotch'ior groove. is formed 'in'the upper end ofthe valve ecore and is of adepth such thatdts bottom is :Joelow, the level of the upper'part 'ofthe'itapered ,valve seat 122. "It willsubsequently sbe under- .stood that .1 instead of having a groove: orifnotch "formed infthe upper face thereof a longitudinally I cextending "'gro'ove may beformed :incthe t lateral face'o'f portion-23 o'f' 'th'e val-veicorerzand have. its lower end terminatings somewherebelow-7theinpper'dge of' the tapered'valve seat.

a hn 'annular collarLZlrsurrounds-theupper of the *Valvercoreramd the flexible -tubezand is .pro-

vided with an :outwardly extending flange 28. at 'i'ts upper fiend. :inwardly extending circumferential :5 projection :29 -.is formed eon the lower edge of fthecollar. :Th-is collar, wheninitsuppermostwposition,--is adaptedto press the flexible stube'itightlyeagainst thetapered valve seatZZ of V $15 iaxialidis'chargeepassage 35 is supported by the cover member in a'fianged opening 36 atone side ithereof. :Theilarger portion of the nozzle is containedwithin the cover 3| and the'upper end of the "flexible discharge tube I5 is secured thereover; Thus, material passing through, the dis-' charge tube is discharged throughnozzle 34.

-A v'alve-"'actuating button 31 is containe'd ior the most 'part :within the cover and has its upper 7 end -%extending" throu'gh' an opening- 38 in the cover member." "It is provide'd-withan 1 annular wardly -toopenthe vailve. 'A -part lflof theothering- B'E-is prevented; But'ton 3Tissu-pported by flange '28 of anna1arcor1ar21 and when depressed, as bytheapplication- 6f a -iiser 's finger to its upper'end, serves to m'ovethecollar downtainer. Thisassenibly: comprises =container' cover member [2, discharge valve; cover member 3.]

'- siphon tube -l5-and all or the pants contained the valve core to form a pressure-tight seal.

This;;po-sition--. ofthe:.annular -collar is "shown in ::Fig.' 2. However whenathe collar is moved downwardly to a position such as shown in Fig.-4;the flexible; tube is permitted. toj'di'senga'ge,1or become unseatedlirom, the -valve. seat and fluid under flnhessune is gpermittedtogpassthrough hole i9, passageway 2|, and notch "24 of'thevalvecore betweenthe cover-members. V

Referring now to' 'l ig. 6, a I modified 1 form 6f "valve assem bly is shown which; as :"stated; is par ticiilarlyadapted to iusewit ntainers holdi-ng relatively wiscous -materiaI- under pressure.

The "details of the valve its'elf o'fthis form are substantially the 'same as tho'se of -the 'above desc'rib'e'd form, with-minorexceptions- One of theseexceptions is valvecore2-4iinsteadiof "being 1 provided "with; groove orslot across itsupper 5 face is -here provided with one i or more grooves 4| formed in the outer lateral face therer of and-:extending irom" the upperitacerof theicore' downwardly i' to' terminatefiin *the tap'ered i'valve seat. I In this jform;= the valve collar .isia1sogsomewhat i "di fierent. Whereas 'in the apreviousiiiorm thefloutwardly extending flange :28'5isi'formed at the upper extremity of the annularicollar;in this form it is not, and the "collar- 'has *aiportion' 42 extending above i flangei*2'8. .Aicoverunember or 'cap 43 provided with :a :fingen'engaging depressed "nul'a'r coll'ar and has a passage 45 "throughit, the "lowereridof' whieh receives upper portion 42 er thecoll'ar "The :outer. end of passage AE-terminatejs' in a relatively thin iiange dfi which there is {formed -a plurality "of "notches '41. These fnotches are fort'h'efpurpose of changing the shape o'fthe relatively *viscous -"materia1 as it is expelled'through passage-' '!5=when "the discharge valve is open -so that the material "will not be j'discharge'd ftherefrom "as -'-a-*plai-n" tubular stream. :Itwiflfbe noted-that inthis form of valve assembiy that the"vaivemoveror eap is not==secured to container cover member I2 as was the dis.- charge. valve covert I of the previousform of valve assembly. i

In the appended claims the words upper, "lower and "above". are. used; for "simplicity to concisely set forth the invention and it should be understood that their. use. is not. intended to limit pose. of relatively locating particular parts. It will also be apparent that various modifications of the forms of my invention disclosed may be invention and my invention is. therefore to be tending laterally through the side wall of the valve core and intersecting said hole in the valve core above that portion of the valve core tightly engaged by the flexible tube, an annular collar surrounding said tube andsaid valve core and the diameter of the upper end of the valve core, said collar being movable axially into and out of a position in which said portion thereof presses said tube against the upper end of said valve core in pressure-tight relation above saidpassageway, and a spring normally urging the collar toward the position in which it presses the tube against the valve core.

2. A discharge valveaccording to claim 1 in in which the annular collar has an outwardly extending peripheral flange at its upper end the underface of which is engaged by the upper end of the spring. i I

3. A- discharge valve according to claim 1 in which the valve core has a valve seatformed adjacent the upper end thereof above said passagewayQthe annular collar being movable axially so that said portion thereof presses said tube against said valve seat.

4. A discharge valve according to claim 3 in '-Whi0h the wall of the valve core above the valve seat portion thereof permanently engages the tube and has formed in it a slot extending from the upper face of the valve core downwardly to the valve seat portion of the valve core.

5. A discharge valve according to claim 3 in which the upper end of the valve core above the valve seat portion thereof has a peripheral edge which permanently engages the tube and in which the upper end of the valve core has a slot formed across it having adepth such that the bottom of the slot is below said tube-engaging peripheral edge. I

6. A discharge valve according to claim 3 in which an annular channel is formed in he valve 7 core below said valve seat portion thereof, said passageway through the wall of the valve core having its outer end in said annular channel.

7. A discharge valve according to claim 3 in which the valve seat is tapered and in which the smaller diameter portion of the collar is an made without departing from the scope of my limited to the extent set forth in the appended V pressure-tight relation thereto, a-passageway exhaving a portion of smaller inner diameter than which the annular collar presses the tube against the valve core when in its uppermost position and the scope of the claims other than for the pur- V position in which it presses the of the valve core has a slot formed across it having a depth such that the bottom of the slot is below said peripheral edge of the tapered valve seat.

9. A discharge valve assembly for a pressuretight container. comprising a valve-supporting container cover member adapted to be secured in the upper endwall of the container, said container cover member having an opening therethrough, a flexible discharge tube extending through said opening, a valve core the lower end oiwhich extends through said opening inside said flexible tube, a flange integral with the edge of said container cover member around the opening therein, said flange being crimped against the lower portion of the valve core to press the flexible tube thereagainst in seal-tight relation, a passageway extending through the valve core from the bottom face thereof to a point on the face of the side wall of the core abovesaid crimp-ed flange, the upper end of said valve core being of larger diameter than the portion thereof adjacent said point on the face of the, side wall, an annular collar surrounding said valve core and said flexible tube and having a portion of smaller inner diameter than the diameter of the upper end of the valve core, said annular collar being movable axially so that said portion thereof presses said tube against said valve core above said point on the face of the side wall of the core, and a spring normally urging the collar to the position in which it presses the tube against the valve core.

10. A discharge valve assembly for a pressuretight container comprising a valve-supporting container cover member adapted to be secured in the upper end wall of the container, said container cover member having an opening therethrough, a flexible discharge tube extending. through said opening, a valve core the lower end of which extends through saidopening insidesaid flexible tube, a flange inte ral with the edge of said container cover member around the opening therein,

thereof to the bottom of said annular channel,

an annular collar surroundingsaid valve core and said flexible tube and having a portion of smaller diameter than the diameter of the portion of the valve core above said annular channel, said annular collar being movable axially so that said portion thereof presses said tube against said 7 valve core'above said annular channel, and a spring normally urging the'collar towardthe tube against the valve core. v v

1 1. A-discharge valve assembly for 'a pressuretight container comprising a valve-supporting container cover member adapted to be secured in the upper end wall of the container, said container cover member having an opening there through, a. flexible discharge tube extending through-said opening, a valve core the lower end of which extends through said opening inside said flexible tube, a, flange integral with the edge of said container cover member around the opening therein, said flange-being crimped against the lower portion of the valve core to press the flexib-le tube, thereagainst in seal-tight relation, a passageway extending through the valve core from the bottom face thereof to a point on the face of the side wall of the core above said crimped flange, the upper end of said valve core being of larger diameter than the portion thereof adjacent said point on the face of the side wall, an

annular collar surrounding said valve core and said flexible tube" and having a portion of smaller inner diameter than the diameter of the upper end of the valve core, said annular collar being movable axially upwardly so that said portion thereof presses said tube against said valve core above said point on the face of the side wall of the core, an outwardly extending circumferential flange on the collar, and a spring compressed between said flange and said container cover member to normally urge the collar toward its upper position in which it presses the tubeagainst the valve core. I

12. A discharge valve assembly for a pressuretight container comprising a valve-supporting container cover member adapted to be secured in the upper end wall of the container, said'container cover member having an opening therethrough, a flexible discharge tube extending through said opening, a valve core the lower end of which extends through said opening inside said flexible tube, a flange integral with the edge of said "container cover member around the opening therein,.said flange being crimped against the lower portion of the valve core to press the flexible tube thereagainst in seal-tight relation, a passageway extending through the valve core from the bottom face thereof to a point on the face of the side wall of the core above said crimped flange, the upper end of said valve core being of larger diameter than the portion thereof adjacent said pointon the face of the side wall, an annular collar surrounding said valve core and said flexible'tube and having a portion of smaller inner diameter than the diameter of the upper end of the'valve core, said annular collar being movable axially upwardly so that said portion thereof presses said tube against said valve core above said point on the face of the side wall of the core, a spring normally urging the collar upwardly to the position in which it presses the tube against the valve core, a discharge cover member overlying said valve, spring, and valve core and secured to the peripheral edge of said container cover member, a nozzle supported in an opening through the discharge valve cover member and having the upper end of the flexible discharge tube secured about its inner end, and a valve actuating button extending through an opening in the top of the discharge valve cover member and resting upon the annular collar whereby depressionof the button effects depression of the collar to permit flow through the valve core, thev discharge tube and the nozzle.

- -13. A discharge valve assembly for a pressuretight container comprising a valve-supporting container cover member adapted to be secured in the upper end wall of the-container, said container member having an opening therethrough, a, flexible discharge tube extending through said opening, a valve core the lower end of which extends through said opening inside said flexible tube, a flange integral with the edge of said container cover member around the opening therein, said flange being crimped against the lower portion of the valve core to press the flexible tubethereagainst in seal-tight relation, a passageway extending through the valve core from the bottom face thereof to a point on the face of the side wall'of the core above said crimped flange, the upper end of said valve core being of larger diameter than the portion thereof adjacent said point on the face of the side Wall, an annular collar surrounding said valvecore and said flem'ble tube and having a portion of smaller inner diameter ,thanjthe diameter of the upper end of the valve 14. A discharge valve for a pressure-tight container comprising a valve core having a hole formed therein which extends longitudinally a substantial distance into the lower end thereof and terminates therein, aflexible discharge tube 'surrounding said valve core, means for permanently maintaining the tube pressed tightly against the lowerside wall of the valve core in pressure-tight relation thereto, a passageway extending laterally through the side wall-of the valve core and intersecting said hole in the valve core above that portion thereof tightly engaged by the flexibletube, an annular collar surrounde ing said tube and said valve core and havingai portion of smaller inner diameterlthan the diameter of a portion of the valve core above said passageway, said collar being movable axially upwardly so that the smaller diameter portion thereof presses said tube against said portion of the valve core in pressure-tight relation above said passageway, an outwardly extending periph-Q eral flange on said collarintermediate the length of the collar, and a springengaging the underface of said flange to normally urge the collar upwardly toward the position in which it 11135565 the tube against the valve core, and a discharge valve cover member having a passage therethrough one end of which receives the upper end of the annular collar and the other end of which terminates in a flange in which there is formed a plurality of notches, the discharge cover memher being supported solely by said annular collar.

15. A discharge valve accordingjto claim 14,-

which includes an inwardly extending projection at the lower edge of the annular collar adapted to engage said tube to press it tightly against said valve core.

SAMUEL KAHN.

References Cited in the file of this patent UNITED STATES PATENTS- Number Na-me 1 Date 1,163,471 Schramm; Dec. 7, i915 1,883,960 Koppel et al. Oct. 25, 1932

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