FI57568B - LOCK AV PRESSTYP WITH MEDICAL DOUBLE - Google Patents

Description

G3S7I ΓΒΐ «i ^ ANNOUNCEMENT

j) Br & ^ (11) UTLÄGGN I NGSSKRIFT 5 7 5 6 8 C (4S) Γ .:) ^ ^ (51) Kv.lk?/lnt.Ct. ^ B 65 D ^ 5/06 FINLAND — FINLAND (*) Ptt «nttlh * k * mu« - Ptt «nCan * eknln | 2927/7 ^ (22) H «k # ml * pllvl —An» eknlnpd * | 08.10.7 ^ ^ * (23) AlkupUvi — Glltl | h «t * daf 08.10.7 ^ (41) Tullut julklsukal - Blivlt offuntllg 10.0U.75

National Board of Patents and Registration .... .....,. .....

_ '/ 44) Date of Nihtivikslpanon and month of publication -

Patent- och registerstyrelsen '7 ΑιηβΙαη utli | d och utl.tkrlfun publicurtd 30.05.80 (32) (33) (31) Pyydetty etuoikeus — Bogtrrf prloritet 09.10. 73 US A (US) U01 + U55 (71) Dart Industries Inc., P.O. Box 3157 »Los Angeles, California 90051, USA (72) James Baldwin Svett, Barrington, Rhode Island, USA (7 * 0 Keijo Heinonen (5 * 0 Compression type double seal lid - Lock av presstyp med duhbla tätningar

The invention relates to containers and container lids which are suitably made of a deformable structural material. In particular, the invention relates to reusable lids for plastic containers for open containers, especially a lid similar to that described in U.S. Patents 3,679,088 and 3,679,089, which quickly and easily provide a permanent, reliable airtight seal.

From food storage tanks, e.g. tanks made of plastic materials have been available for several years. In this case, a bowl-shaped, cylindrical or other similarly shaped tubular vessel and a separate lid made of a relatively flexible material are generally used. The lids of such containers are usually of different types. One lid has an inwardly turned circumferential groove which is placed at the upper edge of the wall of the container and is compressed or made to expand at this edge so as to form an airtight seal between these parts. Such placement of the lid usually requires the user to apply pressure around the entire circumference of the lid so that the lid is effectively positioned in the mouth of the container. Another typical solution is a two-position lid that can be bent to either of two stable positions. In one of these positions, the lid can be easily placed on the edge of the container or inside its mouth, and then bent to another position. This bending effect either expands or contracts the circumferential portions of the lid and forces the lid seal into locking contact with the edge or inner wall of the container. Other types of lids have plug-like knee-like lids that loosely fit into the open mouth of the container and are then then expanded into contact with the inner wall surfaces of the container.

All of these covers, as well as those described and patented in the aforementioned patents, have been quite satisfactory in function and construction. It should be noted, however, that none of them is completely satisfactory. Since the various shortcomings of most known covers are explained in these patents 3,679.0ΘΘ and 3,679.0Θ9, these shortcomings are not further described herein. Furthermore, it has also been found that the larger lids according to the above patents, fitted to their containers, leave microscopically small openings between the wall of the container and the sealing wall inside the lid. Thus, such large lids release small amounts of liquid from the containers out of the container and do not provide a durable airtight seal.

Thanks to the invention, a sealing lid is obtained which is suitable in all respects for the uses of the previously known lids and which also has the best features of the lids specifically mentioned above. Thanks to the lid construction, the user can now fit the lid to the container simply by applying pressure approximately to the center of the top wall of the lid.

However, this new deck has other distinct structural features that improve the usability of larger decks. The main improvement is based on the addition of one sealing platform to the outer surface of the inner sealing wall. This additional platform complements the sealing effect of the second platform and provides the desired completely airtight seal. The features of the invention appear from the claims.

Other objects and advantages of the invention will now be described in more detail with reference to the following drawings, which illustrate the invention in more detail.

Figure 1 shows a top view of a lid structure to which the principles of the invention have been applied.

Figure 2 shows the lid of Figure 1 from below.

Figure 3 shows a cross-section taken at line 3-3 in Figure 1.

57568

Figure 4 shows on an enlarged scale a partial cross-section taken at line 4-4 of Figure 1 in the region of the central main part of the lid.

Fig. 5 shows on an enlarged scale a cross-section of the cover part delimited by line 5-5 in Fig. 3.

Fig. 6 shows on an enlarged scale a cross-section of the cover part delimited by line 6-6 in Fig. 3.

Figure 7 shows on an enlarged scale a cross-section of the lid taken along line 7-7 of Figure 5.

Fig. Θ shows on an enlarged scale a cross-section of the cover area delimited by line 8-Θ in Fig. 2.

Figures 1 and 2 show the general structure of the lid 10, the lid 10 essentially comprising three functional parts, namely a circumferentially inverted U-shaped groove or lip 12, a central main part 14 comprising a corrugated area 16 and a substantially central main part 14 of the lid. a flat, pin-like region 18. This corrugated region 16 begins at a substantially flat, pin-like region 18 and terminates in an inner sealing side wall 20 extending around the circumference of the central main body 14.

This inner sealing side wall 20, which extends the circumference of the central main part 14, forms part of the lip 12, and the parts of this lip 12 provide a seal between the lid 10 and the wall of the container (not shown) facing it.

As mentioned above, the dense side wall 20 extending the circumference of the central main part 14 forms part of the lip 12 of the lid 10. This lip and U-shaped trough are complemented by an outer wall 22 and a substantially horizontal top wall 24 in between. The outer surface 26 of the side wall 20 is adapted to press into the open mouth of a suitable container (not shown). This depression develops said airtight seal, thus forming a rather inexpensive storage container which is particularly suitable for storing foodstuffs. Likewise, the outer wall 22 and the top wall 24 assist in positioning the lid 10 in place at the mouth of the container.

The structural appearance of the main body 14 is essentially similar to that described in the aforementioned patents. Thus, when the compression is applied to the substantially flat pin-like region 16, the pleats tend to pile up and thus move the inner sealing side wall 20 with them inward. The diameter of at least a part of the inner sealing side wall 20 is larger than the diameter of the container fitting thereto, so that a tight connection can be made between them. Apparently, the entire central body 14 would continue its umbrella-like assembly without the reinforcing and stiffening effect of the inner sealing side wall 20 and the lip 12. Despite this resisting effect, the operation of the central main part 14 containing the corrugated area 16 described above continues, and in fact the flexible return of the lid to its approximately molded size and shape after each deformation is likely to be facilitated by the inner sealing side wall 20.

As can be seen from Figures 3, 5 and 6, the inner sealing side wall 20 has an outwardly projecting platform 2Θ which rotates around the entire circumference of the outer surface 26 of the inner sealing side wall 20. As mentioned above, in the case of making the lid 10 large (diameter about 25 cm or more), this heel 28 tends to twist slightly. This distortion is thought to be due to variations in the shrinkage of the main body 14. As a result of this distortion, microscopic openings are created between the wall of the container and the sealing platform 2B.

To solve this problem, according to the invention, a second sealing platform 30 is used, which is placed above the first or main sealing platform 28. This second platform is also fixedly connected to the sealing wall 20 inside the lip 12 and is suitably located in an area of this wall 20 where the effect of the shrinkage caused by the distortion becomes small. In another embodiment of the invention, this main platform 26 is also located slightly above the upper point of the intersection between the central main body 14 and the inner sealing side wall 20. Thus, in such an embodiment, both sealing platforms 28, 30 will be located so as to be affected by the shrinkage force of the side wall 20.

Figures 5 and 6 show in more detail the relationship between the platforms 28 and 30. These two platforms form separate spaced apart annular platforms around the outer surface of the side wall 20.

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As can be clearly seen, these platforms 28, 30 are also located inside the other walls 22 and 24 of the U-shaped groove. Furthermore, it is clear that the platform 28 is so structured as to form the largest possible sealing surface, while the platform 30 is rather designed as a flexible additional element. It should be noted in particular that this second platform 30 is finger-like in construction and protrudes downwards at an angle of 45 ° to the opening of the U-shaped groove.

Thus, the bending moment is applied to the finger-like platform 30 when the lid 10 is fitted to the container, forcing the platform 30 into close contact with the inner wall of the container. In addition, the actual sealing platform 28 below considerably relieves the hydrostatic pressure of the second platform 30, so that even if microscopic openings exist along both sealing surfaces, this is sufficient to force liquids through them.

Figures 2, 5, 7 and 8 show another structural detail that can be used in this type of lid. In said figures, Rival 32 are shown, and it can be seen that the ribs 32 extend from the sealing side wall 20 along the underside of the top wall 24 and then downwards along the inner side of the outer wall 22. These ribs 32 are located at selected intervals along the lip 12 so that air can easily escape from the container (not shown) when the lid 10 is put in place. In particular, it should be noted that as the ribs 32 extend downwardly along the outer wall 22, the tight joints between the lid 10 and the container are prevented when the lid is positioned. This allows as much air as possible to escape from the container so that favorable conditions are created inside the container before the outer wall 22 of the lid 10 and the platforms 28 and 30 close the container.

In the new lids according to the invention, a lateral displacement tends to occur in the corrugated region 16 when pressure is applied to a substantially flat pin-like region 18 located in the center of the central main body 14. The corrugated structure emphasizes this as the central body 14 folds like an accordion. This similarly tends to cause the sealing side wall 20 to pull inwards and thus facilitate the pressure of the central main part 14 into the open mouth of the container or tubular element. Once inserted and at the end of the effective compression, the resilient closure material, due to its resilience, tends to settle in its rested or original molded state and thus press the sealing side wall 20 against the interior of the container wall to seal the container airtight. To remove the cover, just point upwards

Claims (3)

1. Muotoaan muuttava, paikallisesti kutistuva ja laajeneva muovikansi (10}, joka joustavuutensa ansiosta kykenee ilmatiiviisti sulkemaan avosuisen elementin ja johon kanteen (10) can only be used in one (14) or even one (up to 14) tappimaisesta alueesta (1B) alkava keskeisen pääosan (14) kehän jatkeena olevaan tiivistävään sivuseinämään (20) ulottuva poimutettu alue (16), joka keskeinen pääosa (14) on sovitettu sellaiseksi, että sovitettaosanttain oleellisesti laakeaan tappimaiseen alueeseen (1Θ) ja edellä mainittu poimutettu alue (16) pyrkii menemään cocoon ja siirtämään oleellisesti kauttaaltaan keskeisen pääosan (14) kehän jatkeena olevaa tiivistäää seinämää (20) johon kanteen (10) kuuluu olennaisesti ulkonevia reingasmaisia tiivistyskorokkeit a (26, 30), jotka korokkeet (26, 30) ympäröivät mainitun keskeisen pääosan (14) kehän jatkeena olevaa tiivistävää sivu-seinämää (20), jotka tiivistyskorokkeet (26, 30) - keskeisen pääosan (14) kehän (20) tapaan - voiva siirtyä siten, että kun keskeiseen pääosaan (14) kohdistuva puristus päättyy, may joustavuuden ja kimmoisuuden ansiosta ainakin osa näististisorokista 30) muodostaa vaakasuoraan close to culman ja youngka nobelä mainitun korokkeen (30) poikkileikkaus on huomattavasti kapeampi kuin mainitun korokkeen (30) alapuolella olevan tiivistyskörokkeen (28) poikkileikkaus. -7- 57568 2. Vaatimuksen 1 mukainen kansi (10) tunnettu siitä, a mainitun keskeisen pääosan (14) kehään liittyvä jatkeena oleva tiivistävä sivuseinämä (20) ), joka on sovitettu seiliön avosuun muodostavien sisä- ja ulkoseinämän päle, ja jotka tiivistyskorokkeet (28, 30) on sovitettu puristuvasti painautumaan zeiliön seinämiin kanen (10) ja seiliön velisen ilmatiiviin sulun muodostamis. 1. Deformable, locally retractable and extensible plastic cover (10), which due to its elasticity hermetically closes an open-mouthed element and to which cover (10) belongs a central body (14), in which the central body (14) is located. the lid (10) in the middle of a corrugated area (16), substantially starting from the flat tapered area (18) and extending to the sealing side wall (20), constituting a peripheral extension to the central body portion (14), which central The body portion (14) is arranged so that when the lid (10) fits into the open-mouth element, the pressure is substantially directed to the substantially flat pin-shaped area (18) at the center of the lid and the above-mentioned corrugated area (16) strives to contract and substantially displacing the circumferentially sealing wall (20) of the central body (14) until said cover (10) can be readily placed on the open orifice member, and to which said cover (10) is substantially protruding annular. sealing tumors (28, 30), which tumors (28, 30) surround the peripheral extension of said central body portion (14) forming sealing side wall (20), which sealing tumors (28, 30) - in the manner characteristic of the circumferential yeast sealing the side wall (20), which is the extension of the central body part - can move so that when the pressure against the central body part (14) ceases, the eating-tone tone is pressed into some of these sealing tumors (28, 30), thanks to the suspension of the lid. and resilience, sealing to the walls of the open orifice element, characterized in that at least one substantially protruding annular sealing groove (30) forms an angle relative to the horizontal plane and the above mentioned intersection of the intersection of the intersection of the intersection of the intersection of the intersection tumor (28) located below said tumor (30).