JPS602451A - Sealing for vessel - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Background of the Invention The present invention relates to a new closure structure for securing a lid to the mouth of a container. This structure is easily molded without the complexity and multiple steps of many prior art closures. The lid can be designed so that it cannot be removed once installed, or it can be of a removable design as described herein. Also, the lid can be easily inserted, but once inserted, the filled container can withstand a drop shock without the lid popping out of its predetermined position at the mouth of the container.

The container of the present invention can be used immediately as a container for automotive oil or other liquids containing quarts or liters of liquid, or it can also be used in larger 1- or 5-gallon paint or chemical containers or drums. I can do it.

No. 55-17 ], 920 of the present applicant discloses a bucket having an annular inwardly projecting ridge adjacent to the mouth, the ridge extending inwardly in substantially perpendicular relation to the container wall. is listed.

Mirasol, Jr., U.S. Pat. No. 3,485,
No. 436 discloses a container and lid type structure in which the container includes an outer groove into which an annular outer flange of the lid fits.

Norton, U.S. Pat. No. 4,090,636, discloses a resiliently curved container lid that fits within the annular groove of a bucket having a double-walled lip. McDonald, U.S. Pat. No. 3,566,946 The designation is for a hole with an outwardly facing angled flange.
Showing the lid seal.

Von f (oldt U.S. Pat. No. 4,210,259)
No. 8 has an annular angular rib extending towards the mouth of the bucket, the radially inner edge of the rib showing the bucket and lid gripped by the lid.

In the present invention, a typical groove is straight and extends inwardly from the inner wall of the container, but at substantially 90 degrees relative to the inner wall.
Significant benefits have been found in the use of annular flanges extending at an acute angle of less than 0°.

DESCRIPTION OF THE INVENTION In accordance with the present invention, a container is provided having an open mouth adapted to receive a snap-on lid. A typically straight annular flange extends inwardly from the inner wall of the container adjacent to the mouth and around its periphery. (The flange is an annular recess to accommodate the snap-on lid)? substantially 15° to the inner wall so as to form between the flange and the inner wall.
It extends toward the open mouth at an angle of between 60° and 60°. Preferably the flange angle is between 20° and 40° or 45°
and the lid has a peripheral annular enlargement proportioned to fit into the annular pocket.

There is preferably an annular step extending inwardly into the upper groove of the annular pocket so as to form an annular recess with the pocket. As an equivalent, spaced "step" members distributed in an annular arrangement at the same location may be used, which are substantially equal to the inwardly extending annular step shown here. However, the sealing effect is probably inferior.

Therefore, when the annular enlargement of the lid is pushed into the pocket,
The bucket lip is pushed outward when applying the lid, especially when the annular step is present to serve as a lock. Usually used to strengthen the lips for added strength.
At the cost of the extra plastic material required for the bucket, it may be necessary to strongly reinforce the lip of the bucket to prevent excessive outward stretching. This is also a container pane)
/ (intended for use as a mole, etc.) gives the container a non-Orthodox appearance.

According to the invention, the flange extending outwardly from the mouth at an angle of 15° to 60° allows the lid to be in place when the lid is balanced against the outer surface of the flange in its installed position. Serves as a balancing aid when pushed. When the lid is installed in this manner, the peripheral annular enlargement pushes the lip of the bucket outward. However, the enlargement also presses against the inwardly extending flange of the bucket, providing a counterbalancing force and thus reducing the overall outward tension adjacent to that lip of the bucket. This provides additional strength to the closure since the flange tends to be under stress inwardly due to the presence of the lid and the lip of the bucket is under stress outwardly with the flange serving as a counterweight. Thus, although the lip of the bucket does not need to be made as strong as would otherwise be necessary due to the presence of the flange, the container still strongly resists accidental opening by dropping or otherwise.

The radially inner side of the annular flange is preferably substantially free of retentive contact with the lid.

It may be desirable for the annular flange and the inner wall of the container to be connected by longitudinal reinforcing ribs to limit inward bending of the flange. Similarly, radial ribs can connect the peripheral annular enlargement of the lid to the underside of the lid to limit inward bending of the annular enlargement.

Slot means may be provided extending longitudinally of the container through the annular enlargement of the lid to permit removal of the lid by means of a screwdriver or the like. Alternatively, the lid can be designed to be effectively non-removable except by destructive techniques.

The lid can be adapted to form a flexible wall around the boat, which has an inner wall for storage in a manner similar to the disclosure of Von HoldL U.S. Pat. No. 4,280,976. It can alternately occupy a bent position and an outwardly extending position serving as a spout.

Referring to the drawings, FIG. 1 is a perspective view of one embodiment of a container of the present invention with a lid attached.

FIG. 2 is a plan view of the container of FIG. 1.

FIG. 3 is a partial cross-sectional view taken along line 3--3 of FIG.

FIG. 4 is a cross-sectional view similar to FIG. 3 illustrating the spout in an extended configuration.

FIG. 5 is an enlarged partial cross-sectional view of a portion of the cross-sectional view of FIG.

FIG. 6 is an enlarged partial plan view of another embodiment of the container and lid of the present invention.

FIG. 7 is a cross-sectional view taken along line 7--7 of FIG.

Figures 8, 9 and 10 are partial cross-sectional views of other embodiments of the container and lid of the present invention.

Referring to Figures 1-5, there is shown a plastic bottle or can having an integral extendable spout and used to contain automotive oil, medicine, soft drinks, or any other substance desired. One embodiment of the present invention is disclosed.

Container 10 is injection molded and preferably has an open mouth;
And there can be upright walled plastic bottles or buckets that are proportioned to accommodate such open mouths with snap-on lids, which can also be made of molded flexible plastic. As illustrated in FIG. 3, the spout 14 of the lid 12 can be in a retracted position such that a portion of the lid forms an annular bend 16i around the spout. For example, the container of the present invention can be stacked in this configuration with another container 10a of similar shape shown in dotted line stacked on top of the container 10.

The lid 12 is generally permanently accessible to the container in this embodiment.

The spout 14 has a sealing wall 18 with a peripheral weakened area 20 where the plastic is thinned. This weak point includes a spont that is strong enough to hold the seal and thin enough to allow easy untwisting of the seal wall 18 when the sealing tab 22 is pulled with a finger. Therefore, if a person grasps the tab 22 with their fingers while the container is in the shape shown in FIG.
When pulled, the spout 14 rises. Annular bent part 16
Once the spout is straight and the spout is fully raised, any further tension will cause the weak area 20 to rupture and the sealing wall 18 to be removed.
Therefore, the contents of the container can be poured out through the spout. In the present invention, the lid is shown to be made of plastic, although in some cases it can be made of metal or other material as desired.

The plastic lid 12 has a peripheral annular enlargement 24, the core of which fits into an annular pocket 26 provided therein adjacent to the lip of the container u10.

Annular enlargement 24 of lid 12 and annular pocket 26 of container 10
Referring to FIG. 5 for details of the sealing connection between the peripheral annular enlargement 24 of the snap-on lid 12 and the inner wall 28 in its cross section and the inner wall 28 in the bottom region 32,
connected to and generally parallel to each other (at least 1
The outer wall 30 has a generally U-shaped double wall (within 0°). Angled portion 29 of inner wall 28 forms a wide seal with annular flange 34.

The U-shaped double-walled system 28.30 is configured to fit within the annular pocket 26, which extends inwardly from the inner wall 36 of the container IO and extends adjacent the mouth 38 of the container 10 to its inner periphery. is formed by an annular flange 34 extending around. The flanone 34 extends towards a mouth 38 which opens at an angle of 15° to 6o0 (and preferably about 30°) to the inner wall 35 to form said pocket 26.

The presence of the flange 34 significantly improves the strength of the container mouth 38 and allows less plastic to be used in the general vicinity of the open mouth 38 to create a sturdy container with a reliable seal. I found out that it does.

The container also includes an annular pocket 26 so as to form with the pocket 26 a recess that can be occupied, for example, by the outer wall 30 for the locking relationship between the lid 12 and the container 10.
Preferably, it includes an inwardly extending step 40 located above. Thus, as shown, the lid 12 can be snapped into position where it is installed. The outer wall 3o is bent inward by a clear stepped portion 40 as shown by the dotted line,
Also, the lip 38 of the bucket 10 will correspondingly curl outward. However, when the lid 12 is snapped into place, the inner wall 28 pushes against the annular flange 34, with said counterbalance force forcing the setback of the lip 38 back to its normal position and attempting to hold it there. do.

Optionally, the annular flange 34 can be connected to a longitudinal reinforcing rib 42 that connects the inside of the annular flange 34 to the inner wall 36 of the bucket to limit inward curling of the flange. Ribs 42 are shown in dotted lines to emphasize the fact that their presence is optional but preferred, and that both their number and shape may be varied to suitably adjust the stiffness of flange 34 to a desired level. There is.

Similarly, the inner wall 28 of the peripheral enlargement of the lid 12 also extends as shown between the radially inwardly facing surface 45 of the wall 28 and the underside of the lid 12, and optionally includes an annular ring 46.
Optional radial ribs 44 in close contact with the radial ribs 44 may be provided. The radial ribs 44 are also meant to emphasize their optionality (but preference) and that their number and shape can be varied as desired to provide adequate stiffness to the inner wall 28 of the peripheral annular extension. This is indicated by a dotted line. Radial ribs 43 can also be used for further reinforcement if desired.

From FIGS. 1 to 5 it can be observed that the lid 12 is virtually non-removable. The container 10 has thus been emptied and the lid 12 can be removed and used in the conventional manner by snapping into the relationship shown in FIG. A good compression groove and sealing surface can be formed along the joining line between the wall 28 and the annular seven-run cage 34, and also along the joining line between the wall 30 and the inner wall of the bucket. We can provide a variety of stickers.

An integral spout and easily removable seal wall or tab 18 may be present as shown. The material used for the container can be polypropylene, polyethylene, polyethylene terephthalate, or other known plastic materials desirable to obtain the desired physical properties for the container.

If it is desired to have a rigid, flexible closure system, the distance between the bucket 0 between points 41 and 47 and the annular extension 24 can be reduced, for example by about a third. is desirable.

6 and 7, a variation of the container of the present invention is disclosed. This particular structure is useful for paint buckets and other applications where il, 2b can be removed.

As with the previous embodiment, the container 10b has an annular flange 34b' extending at an angle of approximately 30° to the inner wall 36 of the bucket, so that a pocket 2 similar to pocket 26 of FIG.
Equipped with 6b'i7. An inwardly extending annular step 40b is also provided and the lid 12b includes a peripheral annular enlargement 50, in this case made of substantially solid plastic. Also shown is bucket lip 38b.

In this particular example, annular enlargement 50 is provided with one or more longitudinal slots 52 . To open the container, therefore, a screwdriver or the like is inserted into the slot 52 by passing through the annular step 40b (!) and acting against the wall 54 of the bucket to force the lid 12b out of its snap-fit locking position. I can do things that arouse you.

Referring to FIG. 8, a specific example of a container according to the invention is disclosed, in which a container 1 which can be injection molded from plastic is shown.
0c comprises a metal sheet lid 12c (il-). As with the previous embodiment, flange 34 is provided to achieve the benefits of the present invention.
c are provided in the same angular relationship to the inner wall 36c of the container. This k-th pocket 32c is provided, the inwardly extending annular step 40c is located at an angle compared to previous examples of annular steps, and the sheet metal is folded into an angular arrangement when viewed in cross section. It is proportioned to hold the peripheral annular enlargement 24c, which includes the two annular walls 60, 62 of the lid.

An annular bend 64 is provided for flexibility of the lid 12c. An optional annular recess with spaced vertical ribs distributed around the container periphery may also be provided as shown.

As with the previous embodiment, flange 34c provides strength to the lip area of the container and prevents outer shoulder 38c from deflecting outward too much when lid 12c is snapped into place. Reinforce.

Lid 12c may be provided with a conventional spout, boat, etc., or bucket 10c may be provided with a longitudinal slot similar to slot 52 to permit removal of lid 12c. It should be noted that a longitudinal slot extending from the lip of the container is preferable to a transverse slot cut through the entire wall of the container in the area of the lip as it tends to reduce the strength of the container hoop. It is.

All of the previous embodiments include a lid that does not extend over the lip of the container, but is retained entirely within the mouth of the container.

Referring to FIG. 9, there is shown an all-encompassing type container similar to that shown in U.S. Pat. Bucket 10d includes a similar inwardly projecting annular flange 34d similar in function to the flanges previously described. The bucket lid 12d includes a peripheral annular enlargement 24d and an additional flange 64 forming a proportionate annular recess 66 (il-) beyond it to accommodate the bucket lip 68.
Equipped with. The annular enlargement 24d is proportioned to fit securely within the annular bore 32d, but need not necessarily conform to the exact cross-section of the pocket. The annular enlargement 24d is thus held securely within the pocket 32d between the annular flange 34d and the inwardly extending annular step 40d for retention in a manner similar to that of the previous embodiment.

If you wish, any reply 67 as in the previous example.
．． 69 can be used.

Another structure is shown in FIG. 1O. Container 10e has an annular flange 34e as in the previous embodiment. Lid 12
e again has its peripheral annular enlargement 24e. An additional annular outer flange 70 is also provided.

an annular depression 72 and an annular depression 7 for strength purposes;
Also provided are spaced vertical ribs 74 distributed within 2.

The annular enlargement 24 of the various lids 12 also provides a sharp, unbreakable edge, which is advantageous in that it goes all the way over the top of the cutable metal cap.

The above has been provided for illustrative purposes only and is not intended to limit the scope of the invention as defined in the claims.

[Brief explanation of drawings]

1 is a perspective view of a container of the present invention with a lid attached; FIG. 2 is a plan view of the container of FIG. 1; FIG. 3 is a cross-sectional view taken along line 3--3 in FIG. 2; 5 is a partially enlarged view of FIG. 3, FIG. 6 is a plan view of another specific example of the container of the present invention, and FIG. 7 is a sectional view similar to FIG. Line 7 in Figure 6
-7, FIGS. 8, 9 and 10 are sectional views of other embodiments of the container of the present invention, respectively. 10 is a container, 12 is a lid, 14 is a spout, 24 is a peripheral annular enlarged portion, 26 is an annular pocket, 28 is an inner wall, 30 is an outer wall, 34 is an annular flange, 38 is a spout, and 40 is a step. Patent Applicant: John, W., 7 On, Holt.
Patent attorney Taku Akaoka/husband

Claims (1)

[Scope of Claims] (1) A container having an open mouth configured to receive a snap-on lid, extending inwardly from the inner wall of the container adjacent to said mouth and around its periphery ( an annular straight flange that extends, said 77 flange forming an annular pocket between said flange and an inner wall for accommodating said snap-on lid (such that 15
characterized by an inwardly extending annular step extending towards the gap at an angle of between 60° and 60' and positioned above the annular pocket so as to form an annular recess with the bore. The said container. (2) The container according to claim 1, wherein the angle is between 20' and 45°. (3) The container of claim 1, further comprising a lid having a circumferential annular enlargement shaped to fit within the annular pocket. 4) the container of claim 3, wherein there is no retaining contact with the lid on the radially inwardly facing side of the flange; 5) a longitudinal reinforcing lip connects the inside of the annular flange with the inner wall; 2. The container according to claim 1, wherein said flange is restricted from curling inward. 6) The container of claim 1 comprising a snap-on lid having a circumferential annular enlargement of double walls generally U-shaped in cross section. 7) said circumferential annular enlargement is of U-shaped double-walled cross-section forming an outer annular wall of U-shaped cross-section, said outer wall fitting into position within said pocket, thereby allowing said container mouth to 7. A container according to claim 6, wherein the free edge reflects said inwardly extending annular step for secure retention of the snap-on lid. (8) The circumferential annular enlarged portion is attached to a radial rib extending between a radially inwardly facing surface of the enlarged portion and a lower surface of the lid to limit inward curling of the annular enlarged portion. 6. The container according to claim 6. 9. The container of claim 1, wherein the snap-on lid has a peripheral annular enlargement and a slot means extending longitudinally through the annular enlargement to facilitate opening of the container. (10) The container of claim 3, wherein the peripheral annular enlarged portion is made of solid plastic. (11) The container of claim 3, wherein the peripheral annular enlarged portion is made of a folded metal sheet. The container of paragraph 3. (12) A container having an open mouth configured to receive a snap-on lid, extending inwardly from the inner wall of the container adjacent to said mouth and around its periphery. an annular flange extending from 15° to 60° relative to the inner wall so as to form an annular pocket between the flange and the inner wall for receiving the snap-on lid;
an inwardly extending annular step extending towards said open mouth at an angle of .degree. A container having a peripheral annular enlargement configured to fit, the radially inwardly facing side of the flange having no retaining contact with the lid. (13) A radial rib extends between a radially inwardly facing surface of the annular enlarged portion and a lower surface of the lid to limit inward curling of the annular enlarged portion.
2. Container. (14) The container of claim 13, wherein the angle is between 20'' and 45°. (15) A longitudinal reinforcing rib connects the inner side of the annular flange and the inner wall, and the angle is between 20'' and 45°. 15. The container of claim 14, wherein the container has limited curling. (16) The circumferential annular enlargement of the lid generally has a cross section of
15. The container of claim 14 which is double walled. 17. The container of claim 14, wherein said peripheral annular enlargement is made of solid plastic. 18. The container of claim 17, wherein slot means extends through said peripheral annular enlargement to facilitate opening of the container. (19) The container of claim 14, wherein the peripheral annular enlarged portion is made of a folded metal sheet. (20) a container having an open mouth configured to receive a snap-on lid, comprising an annular flange extending inwardly from an inner wall of the container around the periphery of the mouth adjacent to the mouth; The flange is at an angle of 15° to 60° relative to the inner wall so as to form an annular pocket between the flange and the inner wall for receiving the snap-on lid.
the container has a lid having a peripheral annular enlargement shaped to fit within the annular pocket and an annular extension into which the peripheral annular enlargement fits. Said container, characterized in that it comprises an inwardly extending annular step located above said annular pocket forming a recess with said pocket. [21+] The container of claim 20, wherein a longitudinal reinforcing rib connects the inner side of the annular flange to an inner wall and limits inward curling of the flange. (FIG. 20) The container of claim 20, wherein the peripheral annular enlargement is generally U-shaped in cross-section and double-walled. (23) The peripheral annular enlargement forms an outer annular wall of U-shaped cross-section. of a U-shaped double-walled cross-section, said outer wall fitting into position within said pocket such that a free edge extends inwardly for firm retention of said snap-on lid at a container mouth; 23. The container of claim 22 abuts an annular step. (24) The peripheral annular enlargement extends into a radial rib extending between a radially inwardly facing surface of the enlargement and a lower surface of the lid. 23. The container of claim 22, wherein the container is connected to limit inward curling of the annular extension. (26) extending longitudinally through the annular extension to facilitate opening of the container. 25. The container of claim 24, wherein the container comprises slot means. (26) The container of claim 20, wherein the peripheral annular enlargement is made of solid plastic. 21. The container of claim 20, wherein the peripheral annular enlargement is made of folded sheet metal as an integral part of the remainder of the lid. 128) To increase the flexibility of the lid, the annular enlargement 28. The container of claim 27, further comprising an annular bend at a radially inward position from the enlarged portion. (29) The lid has an openable port and an inner bent position for storage and a spout. 21. The container of claim 20 having a flexible wall around the openable port that is capable of occupying alternately outwardly extending positions serving as an openable port. , and having a flexible wall around said openable port which can alternately occupy an inner bent position for storage and an outwardly extending position serving as a spout. term container.