FLIP TOP CONTAINER
A container body has a closed bottom and a peripheral wall defining a hollow interior for receipt of desired contents. A cap for the container has a depression constructed and arranged to fit tightly over a top rim of the container body to seal the contents within the hollow interior. The cap can be pried upward to an open position to allow access to the hollow interior. An opening tab hinged to the cap normally extends downward alongside the container body when the cap is closed, but is swingable upward to a horizontal orientation. The tab and cap have cooperating abutments that limit further upward swinging of the tab relative to the cap such that the tab can be used to pry the cap open.
The present invention relates to containers having tight fitting lids, particularly lids that hermetically seal the interior of the container, and to such containers having flip top caps which are pried away from the container body for opening, as compared, for example, to screw caps or other types of twist caps.
Known flip top containers of the general type with which the present invention is concerned are shown in U.S. Pat. No. 7,059,492, titled “Moisture-proof Resealable, Non-cylindrical Container For Consumer Packages,” and U.S. Patent Publication No. 2007/0208274 A1, titled “Sample Collection System And Method.” In addition, processes and apparatus for making containers of this general type are disclosed in U.S. Pat. No. 4,783,056 (“Process For Making An Aseptic Vial And Cap”); No. 4,812,116 (“Mold For Making An Aseptic Vial And Cap”); and No. 6,303,064 (“Process And Apparatus For Making A Leakproof Plastic Container By Completely Ejecting From A Mold And Transferring To A Cap Closing Station”). Reference may be had to these publications and the documents referred to therein (including references cited) for appropriate, representative manufacturing processes and materials.
SUMMARYThis summary is provided to introduce a selection of concepts in a simplified form that are further described below in the Detailed Description. This summary is not intended to identify key features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
The present invention provides a container with a tight fitting, flip top cap. The cap may be joined to the upper portion of the container by an integral hinge joint so as to swing between an open position in which the container body is open at the top for insertion or removal of desired contents, and a closed position in which the cap fits tightly on the container, closing and sealing the otherwise open top. An elongated opening tab can be cantilevered from the side of the cap opposite the integral hinge, and can be joined to the cap by a second integral hinge. The opening tab and cap can have cooperating abutments that limit swinging motion of the opening tab relative to the cap. For example, with the cap in the closed position, the opening tab may be swung down alongside the body of the container. From the downward-swung position the tab may swing approximately 90 degrees upward before the cooperating abutments engage to provide increased leverage to pry the tab and cap farther upward for opening the container. Cooperating locking elements and/or tamper evident components can be provided on the cantilevered tab and body of the container.
The foregoing aspects and many of the attendant advantages of this invention will become more readily appreciated as the same become better understood by reference to the following detailed description, when taken in conjunction with the accompanying drawings, wherein:
A flip top container in accordance with the present invention can be used for storing or shipping any desired contents insertable into the hollow body of the container. Without limiting the generality of the foregoing, such products may include liquids, solids, particulates, and so on. As described in more detail below, the container typically will have a tight fitting cap that can be swung to a position to seal the otherwise open end of the body of the container and reliably stay in the closed position until opening is desired. In accordance with the present invention, the cap is provided with a cantilevered, hinged opening tab which cooperates with the cap during reopening.
The container 10 in accordance with the present invention shown in
A short hinge tab 24 projects horizontally outward from the flange 18 directly opposite from the latch block 20. A flip top cap 26 for the vial is joined to tab 24 by an integral hinge 28. The cap has a peripheral wall defining a central depression 30 sized to receive the portion of the vial between its top and the peripheral flange 18. The interior of the cap depression is formed with a circumferential groove 32 to tightly receive the top rimmed portion 22 of the vial when the cap is swung from the open condition shown in
A cantilever opening tab 36 is joined to the cap 26 by a second integral hinge 38 that extends parallel to the first hinge 28, but at the opposite side of the cap depression 30. The opening tab has a pair of spaced latch fingers 40 which flank an opening or aperture 42 that extends through tab 36. The free end portion 44 of the cantilever tab 36 extends generally oppositely from the integral hinge 38.
The cap 26 can be swung through an angle of approximately 180 degrees from the open position shown in
As best seen in
As noted at the outset, the container can be used for storing or shipping any desired contents. Nevertheless, container 10 is particularly adapted for use with contents for which a hermetic seal within the container is desired. Examples are samples and/or suspension or buffer solutions, or reagents used in sample collecting systems. Representative collecting systems are those used for drug testing, medical testing, environmental sampling (for food processing, for example), and so on. In such cases, the sample or a swab used to collect a sample may be inserted into and then sealed within the container and shipped to a laboratory for analysis. Buffer solutions and/or reagents may be preloaded into the vial. To achieve the desired hermetic seal, the cap of the container must fit tightly over the top of the vial, and sometimes the reliability of the closure is enhanced by the latch fingers and tabs. The tighter the latch and the fit of the cap on the vial, the more force will be required to separate the parts during reopening. Not only can this be difficult, but jostling, spilling, or contamination can result.
For example,
In the present invention, however, as best seen in
The opening tab 36 forms a first class 2 lever with the integral hinge joint 38 being the fulcrum. Consequently, increased leverage is provided for a smooth, convenient, and reliable unlatching of the opening tab even if the latch fingers 40 tightly grasp the latch block 20. During opening the user's thumb fits in the depression 50 at a location remote from the vial 12.
When tab 36 is swung to the horizontal orientation of
A container in accordance with the present invention can be modified to have a tamper-evident component, which will immediately indicate whether or not the vial has been opened or reopened. In the embodiment shown in
While illustrative embodiments have been illustrated and described, it will be appreciated that various changes can be made therein without departing from the spirit and scope of the invention.
Claims
1-14. (canceled)
15. A flip top container comprising:
- a container body having a closed bottom, a continuous peripheral wall defining a hollow interior, and an open top for access to the hollow interior and having a top rim portion;
- a cap for the container, the cap having a central portion and a continuous peripheral wail defining a depression of a size to fit tightly over the rim portion of the container body to seal the hollow interior in a closed position of the cap but movable upward to an open position allowing access to the hollow interior; and
- an elongated, cantilever opening tab joined to the peripheral wall of the cap by a tab hinge having a swinging axis, the opening tab being swingable about the tab hinge axis when the cap is in the closed position from a first orientation extending down from the cap alongside the peripheral wall of the container body to a horizontal orientation extending outward from the tab hinge in a direction away from the cap central portion, the cap and opening tab having cooperating abutments adjacent to the tab hinge which abutments are positioned to engage when the opening tab is swung to the horizontal orientation thereby enabling the cap to be pried upward by manipulation of the opening tab as it is moved to and beyond the horizontal position with the cooperating abutments engaged, said abutments including at least one cap stub integral with the peripheral wall of the cap and extending therefrom to a position close to the tab hinge and a tab stub integral with the opening tab and extending therefrom to a position close to the tab hinge, the tab stub being aligned with the cap stub so as to engage against the cap stub when the tab is moved to and beyond the horizontal position.
16. The container defined in claim 15, in which the cooperating abutments of the tab and the cap are adjacent to but on opposite sides of the swinging axis of the tab hinge, respectively.
17. The container defined in claim 15, in which the abutments include two cap stubs integral with and spaced apart circumferentially of the peripheral wall of the cap, each of the cap stubs extending from the peripheral wall of the cap to a position close to the tab hinge, and two upright walls integral with the opening tab, each wall extending from the opening tab and terminating at a position close to the tab hinge, the two stubs and two walls being aligned so as to engage against each other when the opening tab is moved to and beyond the horizontal position.
18. The container defined in claim 17, in which the tab walls and the cap stubs are adjacent to but on opposite sides of the swinging axis of the tab hinge, respectively,
19. The container defined in claim 18, in which the cap is joined to the container body by an integral cap hinge located at the opposite side of the container body from the tab hinge.
20. The container defined in claim 19, in which the container body, cap, and opening tab are plastic and integral with each other.
21. The container defined in claim 20, in which the opening tab is swingable approximately 90 degrees from the first orientation to the horizontal orientation before the cooperating abutments engage.
22. The container defined in claim 17, in which the opening tab and the container body have cooperating components that interfit to latch the opening tab to the side of the container body in the first orientation.
23. The container defined in claim 22, in which the latch includes a tamper-evident component that is permanently deformed by movement of the opening tab from the first orientation to the horizontal orientation for indicating that the tab has been so moved.
24. The container defined in claim 23, in which the latch tab has an aperture therethrough, the tamper-evident component including a projection with resilient wings positioned to pass through the latch tab aperture as the tab is swung from the horizontal orientation to the first orientation, the wings being constructed and arranged to be permanently deformed when the latch tab is swung from the first orientation to the horizontal orientation.
25. The container defined in claim 17, in which the opening tab has a curved finger notch at its end portion remote from the tab hinge such that the opening tab has a free end portion spaced outward from the peripheral wall of the container body when the tab is in the first orientation.
26. The container defined in claim 25, in which the latch includes a tamper-evident component that is permanently deformed h movement of the opening tab from the first orientation to the horizontal orientation for indicating that the tab has been so moved.
27. The container defined in claim 26, in which the latch tab has an aperture therethrough, the tamper-evident component including a projection with resilient wings positioned to pass through the latch tab aperture as the tab is swung from the horizontal orientation to the first orientation, the wings being constructed and arranged to he permanently deformed When the latch tab is swung from the first orientation to the horizontal orientation.
Type: Application
Filed: Feb 23, 2011
Publication Date: Aug 23, 2012
Inventor: N. Robert Ward (Bothell, WA)
Application Number: 13/033,478
International Classification: B65D 51/04 (20060101);