|Publication number||USRE43077 E1|
|Application number||US 11/981,851|
|Publication date||Jan 10, 2012|
|Priority date||Aug 21, 1997|
|Also published as||CA2301542A1, CA2301542C, CN1107476C, CN1271257A, CN1297221C, CN1475187A, DE69838255D1, DE69838255T2, EP1014839A1, EP1014839A4, EP1014839B1, US6321931, US7204386, US7789263, US8827107, US9010568, US20030098312, US20040211787, US20070187419, US20110000910, US20120175378, WO1999008578A1|
|Publication number||11981851, 981851, US RE43077 E1, US RE43077E1, US-E1-RE43077, USRE43077 E1, USRE43077E1|
|Inventors||Nouri E. Hakim|
|Original Assignee||Luv N' Care, Ltd.|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (120), Non-Patent Citations (9), Referenced by (2), Classifications (25), Legal Events (2)|
|External Links: USPTO, USPTO Assignment, Espacenet|
The present application claims all rights of priority to U.S. Provisional Patent Application No. 60,056,218, filed Aug. 21, 1997.
The present invention relates to a no-spill cup assembly with an improved valve mechanism to prevent liquid from flowing out of the cup when not desired.
No-spill cup assemblies are well known in the art. In the past, a variety of such assemblies have been developed and marketed. In general, the goal of a no-spill cup is to provide a construction which minimizes or prevents liquid from emerging out of the cup when liquid flow is not desired, i.e. when the user is not drinking. However, though the assemblies of the prior art are intended to avoid such accidents, their construction is such that they generally do not provide a secure enough protection against undesirable spilling or leakage. Thus, when such cups are inverted, or more significantly, when they are shaken vigorously, liquid will often emerge from them. This can be a particular problem with young children, for whom these cups are usually intended. Accordingly, there is a need in the art for an improved cup assembly for preventing undesired spilling of liquids.
It is an object of the present invention to provide an improved no-spill cup assembly.
It is a further object of the present invention to provide a cup assembly which prevents liquid from flowing out of the cup when the user is not drinking.
It is a further object of the invention to provide a cup assembly which minimizes and/or eliminates accidental or undesirable liquid flow or spillage out of the cup.
It is a further object of the invention to provide a cup assembly which provides the ability to regulate the flow rate of liquid out of the cup.
It is a further object of the invention to provide a cup assembly which can be used by young children, to avoid accidental spilling of liquid therefrom.
Further objects of the invention will become apparent in conjunction with the disclosure herein.
In accordance with the invention, an improved cup construction and valve assembly is provided which provides an extremely secure seal against accidental liquid flow from the cup spout. Further to the invention, a user places his or her mouth against the spout of the cup assembly to suck liquid out of the cup when desired. The act of sucking at the spout of the cup creates negative pressure or a partial vacuum against a valve in the cup spout, causing the valve to invert, or turn inside out, either partially or totally, thereby unblocking an opening such as an orifice or slit in the valve. Once the opening is unblocked, liquid can flow freely through the valve and spout.
In contrast, when not in use, the valve sits in a resting, closed position, with the valve pressed against the center seal-off, thereby sealing off the opening or slit in the valve assembly. Thus, in its relaxed state, with no negative pressure applied, the valve sits in a closed position with the fluid opening sealed by the center seal-off. Moreover, in accordance with the dual valve nature of the device in the preferred embodiment, an adjacent valve similarly seals when no negative pressure is applied, thereby blocking off the air vents in the cover of the cup, and further preventing the possibility of fluid flow. Consequently, the closed position provides an extremely secure seal against fluid leakage, such that inadvertent spills or even deliberate attempts to force liquid outside of the cup, such as by turning the cup upside down, or shaking the cup, are ineffective.
In a further embodiment of the invention, the cup assembly allows liquid flow to be regulated between regular or maximum flow and minimal flow levels or rates by rotating the position of a valve assembly in the cap or cover of the cup. The valve holder is constructed as a two subunit assembly, with one subassembly holding a valve with a larger slit or orifice for fluid flow than the valve in the second subunit. Thus, upon rotation of the valve holder, either a low-flow valve or a higher flow valve can be positioned in the hole leading to the spout. In this manner, a dual position valve assembly is provided allowing either regular flow or minimal liquid flow conditions.
As will be shown in conjunction with the attached drawings, a novel cup assembly is disclosed for providing prevention against accidental liquid spills.
The sides of the cup can be provided with no handles, one handle, two handles or any other number of handles, for the user's use to grip the cup. This handle or handle is preferably sized for a child's hands. In addition, the outside appearance of the cup and/or the cap can be a solid color, or can be printed with any desired design.
In a further embodiment of the invention, a no spill cup with a soft gripping area can be provided, as shown in
In one embodiment of the invention, the cup is constructed from polycarbonate. In an alternate embodiment, the cup is constructed from polypropylene. If desired, clear polypropylene can be utilized. Alternatively, any other suitable materials can be used for the components of the no-spill cup. The components of the cup are all made of durable materials, resistant to breakage, dishwasher safe, and preferably color fast.
In accordance with the invention, cup 7 includes a no-spill cap or cover 11, a valve holder or assembly 31 and tumbler cup 22. No-spill cap 11 includes a spout 14 for drinking liquid from the cup. The spout is sized to allow an individual to place his or her mouth over the spout to drink therefrom. In the preferred embodiment, the spout is sized for the mouth of a child, particularly for a child of a young age.
No-spill cap 11 forms a cover for placement over tumbler cup 22. When attached to the cup 22, a secure seal is formed such that no liquid can emerge through the connection between the cap 11 and cup 22. In use, cap 11 is sufficiently secured to cup 22 such that shaking the cup assembly, dropping the cup on the floor, or other vigorous movement of the cup assembly, or application of sharp force thereto, is insufficient to separate the cap from the cup.
In one embodiment, no-spill cap 11 and tumbler cup 22 include mating male and female screw threads, such that the cap 11 is a screw-on cap which can be easily rotated onto the tumbler cup 22, as shown in
Either the screw-on cap and/or the snap-on cap can be further provided with a gasket 110 between the tumbler cup and the cap, to further seal the connection between the cup and the cap. This gasket can be part of the tumbler cup 22 or the cap 11, or can be a separate element inserted between the cap and the cup. In a preferred embodiment, the gasket 110 is part of cap 11, as shown in FIGS. 11(a)-(c).
Alternatively, the cap can be provided with a small annular inner lip, on the inside of the cap, which acts as a gasket. This lip, as shown in FIGS. 12(a)-(c), wedges inside the cup when the cap is screwed or placed upon it. The lip acts to further prevent the possibility of liquid flow through the contact between the cup and the cap.
In a preferred embodiment, finger grips 12 are provided on the outside of the cap, such as grooves or the like. These grips facilitate removal and application of the cap, particularly in embodiments requiring the screwing of the cap on and off of the cup.
The cap is also preferably interchangeable with numerous tumbler cups of different sizes. In this embodiment, the rim of the tumbler cups are all of the same diameter, although the tumbler cups themselves are of different volumes. For example, the same sized cap could be used on a 6½ oz. cup and/or a 7 oz. cup and/or a 9 oz. cup, and so forth.
In a further embodiment of the cap, the cap has a soft spout 130 as shown in
In a further embodiment of the cap, the cap has a reduced volume spout as shown in
As shown in
Valve assembly carrier or tapered hole 16, in contrast, provides a passage for the flow of air into the cup during use, allowing liquid to exit through opposing hole 18 and spout 14. Hole 16 is open on one side, i.e. on its lower surface opposite tumbler cup 22. On the opposing side, hole 16 merges into the inner surface of cap 11. The inner surface of cap 11 is further provided with one or more, preferably small, vents or holes for air flow, allowing air to flow through the vents of cap 11 and through hole 16 into the cup assembly during use.
As shown in
In the preferred embodiment, valve holder 31 is a two-subunit assembly connected by bridge 34. Each subunit of the two-subunit assembly is sized to frictionally fit into and be held by either one of tapered holes 16 and 18. The spacing between tapered holes 16 and 18 is the same as between the subunits of valve holder 31, such that the valve holder can be easily secured within cap 11. The sizing and tapering of holes 16 and 18 and the sizing of valve holder 31 are dimensioned so as to provide a secure, snug mating between the valve assembly and the tapered holes. In a preferred embodiment, the top of the valve holder (i.e. the side facing the spout) and the bottom of the valve holder (i.e. the side facing the cup) has two different diameters. The top is proportioned to fit snugly into the tapered hole, and the bottom is proportioned such that it cannot be inserted into hole 16 or 18. In this way, a mechanism is provided to prevent the valve holder from being inserted into the holes in the wrong orientation, i.e. upside down.
Valve holder subunits 37 and 39 open into sealing units 37a and 39(a) and valve retainers or endcaps 37b and 39(h), respectively. Taking subunit 37 as an example of the function of each subunit, as shown in
To assemble the valve assembly, valve 42 is inserted into the valve holder by placement of the valve between sealing unit 37a and valve retainer 37b. After a valve has been placed into one or both of the subunits, the valve retainers can each be folded or hinged back about tab 60, over the sealing unit 37 (or under sealing unit 39, in the orientation shown in the figure) and snapped into place to close the subunits, as shown in
As shown in
Center stop 52 functions as a sealing portion or blocking element of the valve assembly which seals off and blocks the flow of fluid through the valve. In a preferred embodiment, center stop 52 consists of a solid central area or portion 56 which is impenetrable to the flow of liquid therethrough. Surrounding the central area or portion 56 is preferably a peripheral area or region 58, having open areas such as slots or so forth, for allowing the passage of liquid therethrough, as shown, for example in
When in the normal resting position, valve 42 relaxes to sit securely against the center stop 52, as shown in
To drink from the cup, a user raises the cup to his or her mouth and begins to suck liquid through spout 14. In the process, the user creates negative pressure or a partial vacuum against the top of valve 42 in subunit 37. Valve 42 is constructed of a flexible material which is designed to fully invert and turn inside out, or to begin to invert and turn inside out, upon creation of a partial vacuum against the top of the valve 42, as shown in
In a preferred embodiment, the valve material is constructed of a single material with a greater thickness of material on the center area which seals off on the center stop, and with a thinner portion of material on the sidewalls. Providing a thinner sidewall portion contributes to the flexibility of the valve at its edges, which further assists and encourages inversion of the valve, by causing the valve to flex at the sidewalls first upon application of negative pressure thereto. Preferred dimensions for the valve thickness are approximately 0.4 mm of thickness on the sidewalls and approximately 0.9 mm of thickness on the center area.
Upon inversion of valve 42, opening or orifice 70 is displaced away from central area 56 of center stop 52. The inversion of the valve therefore unblocks opening 70 allowing fluid flow through the subunit. As negative pressure is being applied to the top of the valve 42 located next to the spout, negative pressure is likewise being applied to the bottom of the adjacent valve in the other subunit, located in the other tapered hole of the cup cover. Thus, this negative pressure, opens the second valve as well, by displacing the opening in the other valve away from its center stop. Inversion of valves 42 allows fluid flow to proceed through both subunits of the assembly. Liquid will flow through one subunit of the valve assembly, the subunit connected to the spout, concurrently accompanied by air flow through the other subunit of the assembly, the subunit connected to the air vents. In this manner, liquid smoothly and easily flows though the valve assembly, the spout, and out of the cup.
In a preferred embodiment, the valve assembly is further provided with a flow bridge 84. Flow bridge 84 blocks movement or expansion of the valve 42 beyond a certain maximum distance to prevent the valve from overextending itself, or from being subjected to excessive strain or distension, as shown in
When negative pressure is released or removed from the spout, the valve reverts back to its resting position, and fluid cannot flow through the closed slit in the valve. In the resting position, no liquid will spill from or emerge out of the cup.
Further embodiments of the valve holder and assembly are shown in FIGS. 4 and 7-9. As shown in
Thus, in accordance with the invention, a system is provided for maintaining a tight seal against fluid flow when the cup is not in use. An extremely secure seal is provided, such that excessive or vigorous shaking is ineffective to force fluid out of the cup. Significantly, the valve construction disclosed results in a much tighter seal than that observed in the no-spill cup assemblies of the prior art. In accordance with the invention, unless the user sucks through the spout, no liquid will flow through the valve.
In the preferred embodiment, subunits 37 and 39 are preferably identical in all respects excepts for the size of the orifice or slit in valve 42 and the slit in valve 45. It is preferred that one valve be provided with a larger opening than the other valve, such as a longer slit in one valve than the other. In one embodiment, one valve is provided with an opening in the form of a slit of approximately two hundred thousandths ( 200/1000) of an inch in length, while the second valve is provided with a slit of approximately fifty thousandths ( 50/1000) of an inch. Alternatively, other lengths may, of course, be used as well in accordance with the invention.
By varying the size and/or shape of the opening in the valve, the present inventor has further provided a novel dual acting flow system for regulating fluid flow. In this system, the level of flow of liquid out of the cup during use can be easily regulated. Regulation is accomplished by a simple rotation of the valve assembly which converts the cup between a faster or higher liquid flow, and a slower or lower flow system.
As shown in
Any form of desired opening suitable for passage of a desired level of liquid can be utilized in the valve. The opening 70 can be, for example, a slit, a slot, an orifice, a hole, or so forth. Likewise, by the term opening, it is contemplated that multiple openings of these or any other types can be provided as well.
In one embodiment, the opening 70 is an “X” shaped slot 78, as shown in
In a further embodiment, both openings are X-shaped, with one opening larger than the other. A 7 mm opening (the length from end to end of each crossbar of the “X”) can be used for the fast side, and a 6 mm opening for the slow side.
It is further preferred that the valve holder be marked to indicate which subunit is suitable for higher flow, and which for lower flow of liquid therethrough. Accordingly, the valve holders can be explicitly marked “Fast” and “Slow” as shown in
Having described this invention with regard to specific embodiments, it is to be understood that the description is not meant as a limitation since further modifications may suggest themselves, or may be apparent to those in the art. It is intended that the present application cover all such modifications and improvements thereon.
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|Citing Patent||Filing date||Publication date||Applicant||Title|
|US9010568 *||Sep 7, 2010||Apr 21, 2015||Admar International, Inc.||No-spill drinking cup apparatus|
|US20110000910 *||Sep 7, 2010||Jan 6, 2011||Hakim Nouri E||No-Spill Drinking Cup Apparatus|
|U.S. Classification||220/714, 215/387, 215/11.4, 220/203.29|
|International Classification||B65D47/20, A61J9/00, A47G19/22, B65D51/16, B65D43/02|
|Cooperative Classification||B65D2543/00972, B65D2543/00351, B65D2543/00296, B65D43/0231, B65D2543/00527, B65D2543/00537, B65D2543/00092, B65D2543/00046, A47G19/2272, B65D47/2031, B65D51/165, F16K7/12|
|European Classification||B65D43/02S7E, B65D47/20E2, B65D51/16D2A, A47G19/22B12G|
|May 2, 2013||FPAY||Fee payment|
Year of fee payment: 12
|Jan 23, 2015||AS||Assignment|
Owner name: ADMAR INTERNATIONAL, INC., LOUISIANA
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LUV N CARE, LTD.;REEL/FRAME:034803/0669
Effective date: 20150122
Owner name: ADMAR INTERNATIONAL, INC., LOUISIANA
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HAKIM, NOURI E.;REEL/FRAME:034803/0767
Effective date: 20150122