US2330046A - Closure cap for bottles, jars, and other receptacles - Google Patents

Description

p 1943- I G. GLO'CKER 2,330,046 R CLOSURE CAP FOR BOTTLES, JARS, AND OTHER RECEPTACIQES Filed May 1, 1940 2 Sheets-Sheet 1 Gus 7711/5 64 o CKER p 94 ca. GLOCKER 2,330,046

1 CLOSURE CAP FOR BOTTLES, JARS, AND OTHER REGEPTACLES Filed May l, 1940 2'SheetsSheet- 2 VIIIIIII" Gas 7/; l,/ 64 acme-2 Patented Sept. 21, 1943 UNITED STATES PATENT OFFICE i I 2,330,046

oLosuaa oar roa nor'rmarans, AND o'rmm REOEPTAGLES Application May 1, 1940, Serial No. 332,838

4 Claims.

This invention relates to closure caps for bottles, jars, and other receptacles or containers.

More specifically, the invention relates to a closure cap which may beeasily removed from a ontai e hermet a y sealed thereby, and which may be removed in such condition as to pemiit the repeated reuse of the cap.

The closure caps in common use today extend over the mouth of a container, and seat at the periphery thereof a deformable sealing gasket which is adapted to contact the outer surface of a container in sealing engagement whereby the container may be hermetically sealed and maintainedv in sealed condition solely by atmospheric pressure. When the air from the interior of the container has been at least partially evacuated, the removal of the conventional closure cap becomes diflicult without mutilating the cap, the

sealing gasket, or both, so badly that the reuse oi the cap becomes impossible. It is an object 2 of this invention to provide a closure cap which may be removed from the container with great ease and without the mutilation of either the cap itself, or the sealing gasket. It is the construction which permits such easy removal that constitutes the present invention.

Other objects and advantages of the invention will become apparent from a reading of this specification in view of the drawings forming a part thereof, in which drawings like reference numerals indicate lik parts, and in which:

Figure 1 is a plan view of the closure cap embodying the invention;

Figure 2 is a side elevational view of the cap; Figure3 is a vertical cross-sectional view of the Figure 4 is a vertical cross-sectional view of the cap taken on line 4-4 of Figure 1;

Figure 5 is a fragmentary'vertical cross-sectional view on an enlarged scale showing the cap seated on the mouth of a container;

Figure 6 is an enlarged fragmentary vertical sectional view taken on a line corresponding to line 4-4 of Figure 1, and showing the closure seated on a container;

Figure 7 is a view similar to Figure 6 showing the manner in which a piercing tool may be used to vent the" container prior to the removal of the closure;

Figure 8 is a plan view of a modified form of closure cap which embodies the invention;

Figure 9 is a side elevational view of the modified construction; s

Figure l0 is a fragmentary vertical cross-sectional view on an enlarged scale showing the cap seated on the mouth of the container; A

Figure 11 is an enlarged fragmentary vertical sectional view taken on a line corresponding to line HII of Figure 8, and shows the closure seated on a container; and

Figure 12 is a view similar to Figure 6 showing the manner in which a piercing tool may be used to vent the container prior to the removal of the closure.

The closure l0 includes a top portion l2 which is adapted to lie in contact with the lip It at the mouth of a container IS. The top portion l2 of the closure is so formed as to extend o the outer periphery of the container It at the mouth thereof. An annular channel It is formed about the edge of the top 12 and this channel I8 extends upwardly from the top portion I2.

In the channel I8 is an annular deformable sealing gasket 20 having one edge 22 seated therein. Th inner surface of the sealing gasket 20 is adapted to contact the outer surface of the container in the neighborhood of the mouth thereof in sealing engagement.

A skirt 24 depends from the outer wall of the channel It and this skirt is adapted to support the outer surface of the sealing gasket. At the top of the skirt where it joins the outer wall of the channel l8 there is provided a passage 26 which extends therethrough.

The passage '26 through the top of skirt 2B is directly opposite a radial channel 28 which communicates with the annular channel 22 and which is in alignment with the passage 26. The arrangement of the passage 26 in the skirt 24 at the outer side of the sealing gasket 20 and the radial passage 28 atthe irmer side of the sealing gasket 20, permit a piercing tool to be moved through the side of the closure to a point beyond the wall of the container l6, thereby venting the interior of the sealed container to the atmosphere. Such venting operation may be accomplished by means of a suitable piercing tool 30 which is preferably constructed in accordance with the teaching of my Patent No. 2,187,395.

It is desirable that the gasket 22 be firmly seated in the annular channel l8, and it is particularly desirable that such firm seating be secured in the zone of the piercing passage 26, and the radial channel 28. The connection between the sealing gasket 22 and the annular channel l8, particularly in the zone of the piercing passage 26, should be sufficiently air tight to prevent leakage of atmosphere into the container at this point. For the purpose of securing a tight joint, the gasket 20 may be cemented into the channel It or a joint may be secured by crimping the walls of the channel l8 into the sealing gasket as-shown at 32. It is also desirable to seat the outer end of the sealing gasket firmly in the annular channel l8 throughout the annular extent thereof, and such seating may be accomplished by assembling the gasket with the closure and crimping the walls of the channel l8 inwardly throughout the entire annular extent thereof.

In order to further insure a tight connection between the annular channel l8 and the sealing gasket 20 at the zone of the piercing opening 23, it will be noted that the radial channel 28 which extends upwardly from the plane of the top portion I2 is not extended upwardly however, to the-full height of the annular channel 18, but terminates below the top, as more particularly shown in Figure 6, so that a proper support is formed at the inside of .the outer end 22 of the sealing member 20 even at the outer end of the radial channel 28.

The invention is applicable to closures made of moldable material, but its most obvious utility will be found in metal constructions wherein the closure may be formed by simple stamping operations. The invention may be applied to closures adapted for use with various types of bottles and jars. In Figure 5 is shown a jar having a projecting shoulder 34 below the mouth thereof and having a bead 36 formed externally thereof above the shoulder 34. Closures for this type of container may be so constructed that the lower end 38 of the sealing gasket is adapted to contact the shoulder 34 thereby aiding the sealing function. Other jars that commonly require closures of this type are formed with only a head 36 below the mouth thereof, and for this type of jar, the closure may be provided with an inturned flange 40 at the lower extremity of the skirt 24 and this flange may be so fashioned as to embrace the outer end 38 of the sealing gasket.

In Figures 8 to 12 is illustrated a modified form of closure cap which embodies the primary invention, and which differs from the construction hereinabove described principally in the elimination of the annular marginal channel. In this modified construction the closure l includes the top portion I2 which is not only adapted to lie in contact with the lip I4 at the mouth of the container l8, butextendssufiiciently beyond the lip i 4 of the container to provide space for the annular-deformable sealing gasket 20. In order to provide the necessary space for the sealing gasket 20 and to provide support therefor at its outer surface, the skirt 24 is formed at the periphery of the top portion l2 and depends therefrom a sufficient distance to embrace the sealing member 20.

In order to provide passage for a sealing member piercing tool, there is provided a radial channel 28 which communicates with a passage 26 formed in the inner wall thereof. Thealigned arrangement of the passage 26 in the skirt 24 at the outer side of the sealing gasket 20 and the radialpassage 28 at the inner side of the sealing gasket 20, permits a piercing tool to be moved through the side of the closure to a point beyond the wall of the container l6 for the purpose of venting the interior of the sealed container to the.

in Figure 12 of the drawings, and may be-of thekind described in my above mentioned patent.

Prior to the application of the closure In to the container II, the upper end of the sealing gasket 20 is in abutment with the top portion l2 of the closure and the sealing member 20 does not extend into the radial channel 28. However, upon the application of the required pressure to bring the closure into sealing engagement with the container, the relatively free flowing characteristic of the deformable sealing member 20 permits the upper end thereof to expand into the radial channel 28, thereby forming an eflective seal over the passage 28. If desired, the

sealing member may be formed with an upwardly projecting nub ofsuch size and shape as 15 to contact the walls defining the radial passage 28. A construction in accordance with this suggestion would further insure a perfect seal in the neighborhood of the passage 28 and the channel 28. I

Various modifications may be embodied in the practice of the invention, and uch modifications fall within the scope of this invention as defined by the spirit of the subjoined claims.

I claim:

1. A container having a mouth, a closure therefor including a thin top portion adapted to lie in contact with the lips of said container at said mouth and extend to the outer periphery thereof, an annular channel formed about the edge 30 of said top and extending upwardly therefrom,

an annular deformable sealing gasket seated at one edge thereof in said channel and having an inner surface adapted to contact the outer surface of said container in sealing engagement, a skirt depending from the outer wall of said channel and being adapted to support the outer surface of said sealing gasket, a passage extending through the upper portion of said skirt at a point above the plane of said top, and a portion 4" of said top being deformed upwardly to form a channel above the plane of said top, said channel being disposed radially from said annular channel and in alignment with said passage whereby a piercing tool may be moved through 5 the side of said closure to a point beyond the I wall of said container.

2. A container having a mouth, a closure therefor including a thin top portion adapted to lie in contact with the lips of said container at said mouth and extend to the outer periphery thereof, an annular channel formed about the edge of said top and extending upwardly therefrom, an annular deformable sealing gasket seated at oneedge thereof in said'channel and having an inner surface adapted to contact the outer surface of said container insealing engagement, a skirt depending from theouter wall of said channel and being adapted to support the outer I surface of said sealing gasket, a passage extendoo ing through the upper portion of said skirt at a point above the plane of said top, and a portion of said top being deformed upwardly to form a channel above the plane of said top but below the top of said annular channel, said channel being 65 disposed radially from said annular channel and in ahgnment with said passage whereby a piercing tool may be moved through the side of said closure to a point beyond the wall of said container. 7o- 3. A container closure including a thin top portion adapted to lie in contact with the lips of a container mouth and extenclto the outer periphery thereof, an annular channel formed about the edge of said top and extending upwardly therefrom, a skirt depending from the outer wall of said channel, a passage extending through the upper portion of said skirt at a point above the plane of said top, and a portion of said top being deformed upwardly to form a channel in said top above the general plane thereof and lying within the plane defined bysaid upwardly extending angular channel, said second named channel being disposed radially from said annular channel and in alignment with said passage, and an annular deformable sealing gasket having one edge thereof fixed in said annular channel.

4. A container closure including a thin top portion adapted to lie in contact with the lips of a container mouth and extend to the outer periphery thereof, an annular channel formed about the edge of said top and extending upwardly therefrom, a skirt depending from the outer wall of said channel, a passage extending through the upper portion of said skirt at a point above the plane of said top, a portion of said top being deformed upwardly to form a channel GUSTAVE GLOCK'ER.

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