US2978133A

US2978133A - Jug closure

Info

Publication number: US2978133A
Application number: US11678A
Authority: US
Inventors: Alfred J Huck
Original assignee: Knapp Monarch Co
Current assignee: Knapp Monarch Co
Priority date: 1960-02-29
Filing date: 1960-02-29
Publication date: 1961-04-04
Anticipated expiration: 1978-04-04

Description

April 4, 1951 A. J. HUcK 2,978,133

JUG cLosuRE Filed Feb. 29, 1960 2 Sheets-Sheet 1 @I 20TH H' 6./

Ruil L U /Nl/ENTOR.' @d @ym M ATTORNEYS.

A. J. HUCK JUG CLOSURE April 4, 1961 2 Sheets-Sheet 2 Filed Feb. 29. 1960 Mn/L4,

ATTORNEYS.

rnc crosnan Alfred J. Huck, St. Louis,

arch Company, St. ware Mo., assigner to Knapp Mon- Lonis, Mo., a corporation of Dela- Filed Feb. 29, 1950, Ser. No. 11,678 3 Claims. (Cl. 2li-f1.3)

This invention relates to jug closures and more particularly to automatic venting closures for insulated liquid containing jugs having discharge spouts or spigots.

One object of the invention is to provide a jug cap that is threaded onto a jug neck in the conventional manner, but is novel in that it has a hollow upwardly-opening section or socket that serves two purposes, first to contain a vent hole which is closed whenever a drinking cup is positioned in the socket, and second to provide in conjunction wi'th the drinking cup a good additional thermal insulation for the jug in the area Where it is very much needed, at the top where thermal losses occur more than from any other part of the jug.

Another object is to provide a two-piece cap repre-v senting a minimum number of simple-to-manufacture parts, that provides a spill-proof seal for the jug and provides the desired additional thermal insulation in the top area of the jug in addition to providing automatic venting.

Still another object is to provide an arrangement wherein the user, upon removing the cup to take a drink automatically exposes a vent hole in the cap to permit tlow of air from the outside of the jug through the vent hole to the liquid contained in the jug so that free flow thereof occurs through either a spigot or spout into the drinking cup. Thus, it is merely necessary for the user to remove the drinking cup, and thereby flow of air through the vent hole of the jug cap is automatically had.

A further object is to provide a depressed plastic jug cap which constitutes a sealing member that need not be removed when the jug is being used to supply liquid therefrom, the opening of the Vent hole eliminating the possibility of vacuum interfering with flow of liquid from the jug.

Still a further object is to provide the cap with internal ribsy and the vent hole located, preferably but not necessarily, in one of the ribs so as to permit the escape of entrained air between the cup and the sealing cap when replacing the cup in the cap.

In insulated jugs thermal leakage occurs principally at the closure area of the jug and accordingly a maximum of insulating properties are highly desirable at this point to secure maximum etilciency of the insulated container.

An additional object of my invention is to provide a metal or plastic drinking cup in association with the customary jug cap and so placed as to provide an air space for this purpose between it and the jug cap proper.

Because the cup in place produces a vacuum formed inside the jug when liquid is removed, a practical means of breaking this vacuum and permitting the ingress of aten-t air is needed to establish a ilow of liquid from the jug.

l accomplish this when the drinking cup is taken from its position in the cap and automatically opens a vent hole to provide proper venting for full liquid ow.

With these and other objects in View, my invention consists in the construction, arrangement and combination of the various parts of my jug closure, whereby the objects above contemplated are attained, as hereinafter more fully set forth, pointed out in my claims and illustrated in detail on the accompanying drawings, wherein: l

Fig. 1 is a side elevation of an insulated jug with my jug closure applied thereto;

Fig. 2 is a plan view of'Fig. 1 with .the upper portion of the jug handle broken away;

Fig. 3 is an enlarged vertical sectional view on the line 3 3 of Fig. 2 showing my novel jug closure with the drinkingcup in position in the jug cap;

Fig. 4 is a similar sectional view of a portion of Fig. 3 showing the cup removed and the thereby automatically opened;

Fig. 5-is an exploded perspective view of the jug cap and the drinking cup per se;

Fig. 6 is a plan View of the jug cap at the scale shown in Fig. 3 and shows a modified construction.

vFig. 7 isa vertical sectional view similar to Fig. 3 and showing the modified construction of Fig. 6; l

Fig. 8 is an enlarged vertical sectional view on the line 8 8 of Fig. 7; and

Fig. 9 is a perspective view of the jug cap shown in Figs. 6 and 7.

On the accompanying drawings, I have used the reference numeral 1Q to indicate the outer shroud of an insulated jug, 12 the inner lining thereof, and 13 the neck of the jug, which parts may be formed of sheet metal or the like. The neck 13 has a thread 1'4 formed therearound in the usual manner. Insulating material 15 is packed in the space between the shroud 10 and the liner 12 whereby aninsulated jug is formed, a rubber or, neoprene joint 16 being provided between the upper end of the liner 12 and the upper end of the neck 13 to minimize heat transmission. The upper end of the liner 12 is formed into an annular bead 17 for closure purposes as will hereinafter appear.

A closure or jug cap C1 is provided which is preferably formed of insulating material, althoughy itV may be formed of metal if desired. As illustrated,. it is molded in one piece to a shape that has an annular top wall 18, a depending flange 20 provided with screw threads 22 to coact'with the threads 14 formed on the jug neck 13, a socket at the'center having a bottom wall 24 and a cylindrical wall 26, and a slightly tapered or cone-shaped wall portion 28 Vto coact with the annular bead 17 for closure purposes when the cap C1 is threaded tightly onto the neck 14 totheposition illustrated in Fig. 3. The slight taper of the wall portion 28 may be only that required for mold Vdraft such as 1/2 to 3.

l provide a drinking cup C2` also preferably molded as a single member of plastic material having a top wall 30, a depending cylindrical wall 32 and an upper llange 34 for convenience in `grasping the cup C2 to remove it from the cap C1- The wall 32 is tapered in cross section `as illustrated in Fig. S'as usually required for draw froma Ymolding die, and the wall '26 of the cap C1 is similarly cone-shaped, the inner surface of the wall 26 and the outer surface` of the wall 32 being at the same angle with respect to the axis of the cap and cup for a substantially air-tight contact when the cup is positioned in the cap withthe flange .3ft limiting the inward movement.

The cylindrical wall 26 of the cap C1 is provided with a vent opening 36 which is automatically closed by the wall 32 in the position of the parts as shown in Fig/L3, and this is a Very desirable feature of iny invention in that -it provides a vent which isautomatically sealed when the cup C2 is in the stored position relative to the cap C1 vent hole inY the capr Y. user to get a drink from the jug, however, he removes the cup@ which automatically opens t-he vent 36 aszshown in -Frg. 4 and the userrnay then iill the cup from afspigot 3S whichris normally closed and provided with a push button -for opening'in the usual manner Y(or in place of the spigot 38 there may be a spout with a removable cork or cap associated therewith). In either event it is necessary to vent the lupper portion of the jug to atmosphere in order to secure full ow of liquid vfrom the spigot or spout and is automatically accomplished byn the vent 36 placed as indicated and thus automaticallyV opened when the cup C2 is removed, and again automatically closed when the cup C2 is replaced. At the Sametime the cup provides an air space within nthe, caprfor Yfurther insulating eieiency at the top'of the' jug where most` thermal leakage occurs. Y Y

l Due to the Vair space within the Ycup C?, air is trapped i" when the'cup is placed therein in the cap C1, but may be readily eliminated by the modified construction shown in Figs. 6 to 9 inclusive.` In these figures the same'reference numerals have been'applied, and additionally the inner surface of the cylindricalV portion of the Vcap C1 is provided with

vertical ribs

40, 42 and 44 which hold the cylindrical wall 32Y of the cup member C2 spaced from the inner surface of the cylindrical wall Z6 as shown in socket, and a cup'normally received in said socket, the wall of said socket having a vent opening therethrough, said vsocket having a slightly cone-shaped cylindrical wall, and said cup having a cylindrical wall of complementary shape to snugly tit therein and thereby automatically close said vent opening when therein and automatically open said vent opening when removed therefrom for use.

4. Ina jug closure, a jugrcap having provisions for screwing the same on the neck of a jug, said cap having a depressed socket .depending from the upper wall thereof, and a cup normally received in said socket, the wall of said socket having a vent opening therethrough, said cup normally closing'said vent opening whereby removal of the cup exposes the vent opening to atmosphere, the inner surface of said socket having a plurality of ribs for spacing the outer surface of said cup from said inner surface to permit the escape of entrapped air when said cup is tele- Yscoped into said cap.

5. In a jug closure, a jug cap 'having provisions for screwing the same on the neck of a jug, said caphaving a depressed socket depending from the upper wall thereof,

i3 and a cup normally received in said socket, the wall of Fig. 8. The vent 36 is then preferably placed Yin one of` 1 the ribs such as 40 so as to'be closed by the wall 32 whenV the cup is in stored position as shown in Fig. 7.

' Some changes'may be made in the construction and. arrangement of the parts vof my jug closure without departing from the real spirit and purpose of my invention, Y

and it is my intention to cover by my claims any modied forms of structure or use of mechanical equivalents which mayrreasonably b e included within their scope.` `f

I claim as my invention:

l. In a jug closure, a jug cap'having provisions for` screwing the same on the neck of a jug, said cap having a depressed socket in its upper surface, and a cup normally received'in said socket, the wall of said socket having a vent 'opening therethrough, said cup snuglyV fitting said wall and thereby normally closing said vvent opening whereby removal of the cup automatically exposes said vent opening to atmospltrere.y

2.V In ay jug closure, a jug capV having provisions for screwing the same on the neck of a jug, said caphaving a depressed socket in its upper surface, and a cup normally received in said socket, the wall of said socket having a vent 'opening'therethrougn said socket having a slightly conelshaped cylindrical walL'said cup having 'a cylindrical wall of oomplementaryshap'e to snugly fit therein and thereby close said ventopening when therein, and said cup havingY an upper flange overlying the marginal edge of said cap when the cup is stored Vin the' cap.

3. Ina jug closure, fa jugcap having'provisions forV said socket having a vent opening therethrough, said cup normally closing said vent opening whereby removal of the cup exposes the vent opening to atmosphere, the inner surface of said socket having a plurality of ribs for spacing the outer surface of said cup from said inner surface to permit the escape of entrapped air whenV said cup is telescoped into said cap, said vent opening being located in one of said ribs. 1

6. In a jug closure, a jug cap having provisions for screwing the same on the neck of a jug, said cap having a depressed socket in its upper surface, and a cup normally received in 'said socket, the wall of said socket having a shaped cylindrical Wall, said cup having a cylindrical wall of complementary Yshape to snugly fit therein, the inner surface of said socket having a plurality of ribs for spacing the outer surface of said cup from said inner surface to ypermit the escape of entrapped air when said cup is positioned in said cap, said vent opening being located in one of said ribs. f.

, 7.*n a. jug closure, a jug cap having provisions for screwing the same on the neck of a jug, said cap having a depressed socket depending from the upper wall thereof, and a cup adapted to be received in said socket, the wall of said socket having a vent opening normally closed by said cup and opened by the removal of the cup therefrom.

8. In a jug closure, a Vjug cap having provisions `for screwing the same on the neck of a jug, said cap having a socket, the wall of which hasa vent opening therethrough,

and a cup received in said socket and normally closingv No referencescited.` Y