US5007231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Container
Assignee: Rexam AB
•
Filing: 1988-12-23
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Granted: 1991-04-16
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Expires: 2008-12-23
Abstract
Abstract An easily-opened container includes a container body with an opening portion and a lid cooperating with the opening portion. The lid has a central lid portion and a peripheral portion located outside this lid portion and sealingly and permanently fixed to the opening portion for closing the container. The central lid portion and the peripheral portion are separated from one another by a weakened portion which extends in the circumferential direction of the opening portion and at least partially around the opening portion. In a restricted region, the opening portion is provided with a recess located beneath the weakened portion. A stripping unit with fulcrum-effect is pivotally supported in a support region. The stripping device has a pull member and a pressure member, the latter abutting against the outer surface of the lid inside the weakened portion and above the recess in order, on lifting the pull member, to realize, by pressure against the above-mentioned region, material rupture in the weakened portion and thereby initiate opening of the container.
Inventors
- 👤 Ole Ingemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:54
CPC Classifications
B; B65; B65D; B65D77/00; B65D77/22; B65D77/30; B65D43/00; B65D43/02; B65D43/0235; B65D43/0264; B65D43/0272; B65D51/00; B65D51/18; B65D51/20; B65D2251/00; B65D2251/0003; B65D2251/0006; B65D2251/0018; B65D2251/0068; B65D2251/0093; B65D2401/00; B65D2401/15; B65D2543/00; B65D2543/00009; B65D2543/00018; B65D2543/00064; B65D2543/00074; B65D2543/00101; B65D2543/0012; B65D2543/00129; B65D2543/00148; B65D2543/00175; B65D2543/00194; B65D2543/00231; B65D2543/00259; B65D2543/00296; B65D2543/00425; B65D2543/00444; B65D2543/00481; B65D2543/0049; B65D2543/00509; B65D2543/00518; B65D2543/00537; B65D2543/00546; B65D2543/00824; B65D2543/00861; B65D2543/00879; B65D2577/00; B65D2577/10; B65D2577/20; B65D2577/2041; B65D2577/205; B65D2577/2066; B65D2577/2075; B65D2577/2091
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
135 words
A method for sealing an open top of a container having a closed bottom and containing goods to be sealed against the ambient atmosphere, said method comprising attaching a first lid to the open top of the container by a peelable connection so that the lid seals the contents in the container, attaching a second lid to the container by a permanent sealed connection in a region outside the first lid to form a closed, sealed space between the lids, and forming the second lid with a weakened portion surrounding said peelable connection between said first lid and the open top of the container to enable separation of said second lid at said weakened portion and provide access to said first lid to enable its removal to gain access to the contents in the container.
Claim 2
Independent Claim
135 words
A method for sealing an open top of a container having a closed bottom and containing goods to be sealed against the ambient atmosphere, said method comprising attaching a first lid to the open top of the container by a peelable connection so that the lid seals the contents in the container, attaching a second lid to the container by a permanent sealed connection in a region outside the first lid to form a closed, sealed space between the lids, and forming the second lid with a weakened portion surrounding said peelable connection between said first lid and the open top of the container to enable separation of said second lid at said weakened portion and provide access to said first lid to enable its removal to gain access to the contents in the container.
Claim 3
Dependent Claim
20 words
A method as claimed in claim 1 wherein the second lid is attached to the container above the first lid.
Claim 4
Dependent Claim
25 words
A method as claimed in claim 1 comprising sever; the weakened portion of the second lid by lifting a member secured to the second lid.
Claim 5
Dependent Claim
45 words
A method as claimed in claim 3 wherein the weakened portion of the second lid is severed in a local region upon lifting said member, the remainder of said weakened portion being separated by applying a pulling force to said second lid through said member.
Claim 6
Dependent Claim
32 words
A method as claimed in claim 3 wherein after the weakened portion is severed by lifting said member, the second lid is separated at said weakened portion by pulling on said member.
Claim 7
Dependent Claim
28 words
A method as claimed in claim 5 comprising sealingly inserting the separated part of said second lid into the open top of the container to reseal said container.
Claim 8
Dependent Claim
28 words
A method as claimed in claim 5 comprising amplifying by lever action , the force applied to said member to sever said weakened portion of the second lid.
Claim 9
Dependent Claim
79 words
A method as claimed in claim 7 wherein said lever action is developed by pivotably supporting said member on the open top of the container as a fulcrum and said amplification of the force applied to the member is obtained by making the distance between the fulcrum and an engaging point on said member greater than the distance between the fulcrum and a point on said membeer which is to sever said weakened portion when said member is lifted.
Claim 10
Dependent Claim
38 words
A method as claimed in claim 8 comprising forming said container with a recess into which said engaging point on said member and a ruptured portion of said second lid are received when said weakened portion is severed.
Claim 11
Dependent Claim
49 words
A method as claimed in claim 8 wherein said second lid is attached to the container above the first lid, and said member is formed with an engaging portion which is located at a level between said first lid and the connection of the second lid to the container.
References Cited (Backward Citations)
FR1123250A
Cited
US2880859A
Cited
US3069273A
Cited
US3498018A
Cited
FR1545647A
Cited
DE1761411A1
Cited
US3693827A
Cited
US3981412A
Cited
US3838785A
Cited
US3952912A
Cited
US4267937A
Cited
US4212409A
Cited
US4387551A
Cited
US4394917A
Cited
US4360121A
Cited
US4448324A
Cited
US4501375A
Cited
US4529100A
Cited
US4738374A
Cited
US4795055A
Cited
US4896479A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-04-15 | 1994-10-15 | 1995-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-15 | 1998-10-15 | 1999-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-15 | 2002-10-15 | 2003-04-16 | $7700.00 | Window Closed / Lapsed |