|Publication number||US20060006178 A1|
|Application number||US 11/167,995|
|Publication date||Jan 12, 2006|
|Filing date||Jun 29, 2005|
|Priority date||Jul 8, 2004|
|Publication number||11167995, 167995, US 2006/0006178 A1, US 2006/006178 A1, US 20060006178 A1, US 20060006178A1, US 2006006178 A1, US 2006006178A1, US-A1-20060006178, US-A1-2006006178, US2006/0006178A1, US2006/006178A1, US20060006178 A1, US20060006178A1, US2006006178 A1, US2006006178A1|
|Original Assignee||Foldesi Steve Sr, Foldesi Steve Jr|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (9), Referenced by (10), Classifications (9)|
|External Links: USPTO, USPTO Assignment, Espacenet|
Reference is made to our co pending application. Ser. No. 60/586,073 filed Jul. 8, 2004, to which a claim of priority is made.
This invention relates generally to the field of wide-mouth food containers, In particular intended for the retail sale of such products as cottage cheese, margarine, and the like. Container and lid could be round or rectangular in shape.
Attempts have been made in the prior art to provide a tamper-proof construction, or at least a tamper-indicating lid without the need of complex molding techniques. The most commonly used process is to shrink wrap in the area of the rim of the lid, overlying the mouth of the container. The shrink-wrapping must be broken before the lid can removed. This installation process is troublesome, and requires a separate machine for installation. The opening of the package is also not usually easy, and often requires the use of a tool such as a knife blade. As a result, the process is relatively expensive, and could be somewhat dangerous to the consumer.
Briefly stated, the invention contemplates the provision of an improved tamper-indicating package of the type disclosed, in which the need for a separate shrink-wrapping operation is eliminated. To this end, the lid or cover is commonly thermoformed from sheet material or injection molded to include a vertical skirt with a peripheral portion of thin walled cross section to allow flexing of a part of the rim over an outwardly-extending bead on the container. The skirt includes a tear strip forming a manually-engageable tab. A portion of the strip below the skirt engages a bead on the container, and may be heat sealed if desired, or allowed to fall free from the container after the tear strip is separated. The container at the mouth thereof includes a corresponding flexible skirt with an outwardly flared edge to engage the skirt of the lid. The tear strip is preferably formed by using laser beams which also form the manually-engageable tab. After a first opening of the container, it is closed in normal manner using a plug-type sealing means on the lid which engages a corresponding recess on the inner surface of the container mouth.
In the drawings, to which reference will be made in the specification, similar reference characters have been employed to designate corresponding parts throughout the several views.
In accordance with the invention, the device, generally Indicated by reference character 10 comprises broadly: a container element 11 and a lid or cover element 12.
The container element 11 may be of known type, commonly formed by injection molding or thermoforming. It includes a bottom wall 20, an arcuate side wall 21, an upper rim section 22, and a lid-engaging portion 23 forming upper and lower recesses 24 and 25. It also includes a radially-extending recess 26 supporting a horizontal portion 27 and a bead-forming portion 28 defining an annular recess 29 engaged by the lid element upon first installation.
The lid element 12, commonly formed as a thermoforming or injection molding operation, and includes a horizontal main wall 30, an inner rim member 31, a radially-extending wall 32 and an outer rim member 33. The rim member 33 includes a single or multiple lines of slitting 34, preferably formed using a Laser beam, and as seen in
During an initial opening operation, the user first separates the tab 35 and moves the same circumferentially to result in severing that portion of the slitted lines 34 which lie in a horizontal plane. This motion will also separate that portion of the lid 38 located below the horizontally-slitted lines so that it will fall away from the container. When the lid is replaced, there will be visually observable evidence that the container was initially opened. If desired, the portion 38 may be heat sealed in position to remain after the lid is removed.
It may thus be seen that we have invented novel and highly useful improvements in lid construction for wide-mouth containers in which the need for heat shrinking additional material surrounding the rim of the lid is eliminated. The novel lid construction is commonly thermoformed or injection molded. The lower flared portion of the lid forms the locking means which, at the time of installation, radially expands past the outermost mouth dimension of the container, and contracts beneath the rim of the container to provide a locking means. By laser slitting not only the horizontal parting lines, but forming a manually-engageable tab, those portions of the lid located below the horizontal slitting line will be ruptured at the time of opening and fall away from the container, leaving clear evidence of an initial opening of the container.
It is noted that after first opening, the lid is removably sealed in the container mouth and maintained by engagement of members 31 and 33 with members 23, 26, and 28.
It may thus be seen that we have invented novel and highly useful improvements in a combination lid and container, in which the need for a heat shrinking operation is eliminated while providing a visual indication that the container may have been tampered with by the time it reaches the consumer. This is accomplished by providing the lid with a downwardly-extending flared member which may be stretched over a bead on the container rim to subsequently contract when the lid is fully seated. The flared portion is provided with a tear strip which must be removed before the lid can be manually removed, and the removal of the tear strip forms a gap which is readily observable. Optionally, with the provision of vertical slitting to form a manually-engageable tab on the tear strip, the slitting may be continued into the area below the tear strip so that it will fall away from the container at the same time. Until the tear strip has been removed, it is difficult to remove the lid from the container.
We wish it to be understood that we do not consider the invention to be limited to the precise details shown and described in the specification, for obvious modifications will occur to those skilled in the art to which the invention pertains.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US3044611 *||Jun 23, 1959||Jul 17, 1962||Tupper Corp||Discardable or reusable plastic package|
|US4487329 *||Oct 13, 1983||Dec 11, 1984||Maryland Cup Corporation||Tamper-evident closure|
|US4488658 *||Dec 12, 1983||Dec 18, 1984||Sealright Co, Inc.||Tamper evident food package|
|US4836407 *||Aug 4, 1987||Jun 6, 1989||Cpc-Rexcel, Inc.||Tamper-evident, differential pressure-thermoformed lidded plastic container|
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|Citing Patent||Filing date||Publication date||Applicant||Title|
|US8322555||Oct 14, 2008||Dec 4, 2012||Pwp Industries, Inc.||Resealable tamper-evident container assembly and lid|
|US8491738||Jun 7, 2008||Jul 23, 2013||Nestech Machine Systems, Inc.||Single tab lid|
|US8584887 *||Oct 27, 2010||Nov 19, 2013||Alexander Segal||Tamper evident container utilizing sealed interface between container and lid|
|US8672166||Dec 24, 2008||Mar 18, 2014||Sabert Corporation||Resealable food container with lid having a tamper evident tear away band|
|US8701919||Jul 13, 2011||Apr 22, 2014||Cascades Canada Ulc||Plastic container|
|US8720727||Aug 14, 2006||May 13, 2014||Nestech Machine Systems, Inc.||Dual tab lid|
|US8757416||Jan 8, 2009||Jun 24, 2014||D&W Fine Pack Llc||Tamper evident container|
|US20120103991 *||May 3, 2012||Alexander Segal||Tamper evident container utilizing sealed interface between container and lid|
|US20130043247 *||Feb 21, 2013||Behdokht Nikaein||Tamper-evident container|
|WO2008021262A2 *||Aug 10, 2007||Feb 21, 2008||Foldesi Steve Jr||Dual and single tab lids|
|U.S. Classification||220/276, 220/793|
|Cooperative Classification||B65D2543/00537, B65D43/0268, B65D2543/00092, B65D2543/00509, B65D2543/00555|