WO2015138885A1

WO2015138885A1 - Spill resistant transition cup

Info

Publication number: WO2015138885A1
Application number: PCT/US2015/020429
Authority: WO
Inventors: David Christopher SALLES; Armond Albert Kaiser; Steven Swisher
Original assignee: No Spill Technologies, LLC
Priority date: 2014-03-14
Filing date: 2015-03-13
Publication date: 2015-09-17

Abstract

A spill resistant cup comprising: a substantially hollow body; a lid, where the lid is removably attached to the body such that the lid spans the top of the body and where the top of the lid has an opening; and an insert located between and spaced from the top of the lid and the bottom of the body, where the insert has an opening and where the opening in the insert aligns with the opening in the lid. The insert, along with the alignment of the openings, allows a user to drink from the cup unimpeded while preventing liquid from within the cup from spilling out in significant quantities when the cup is tipped over.

Description

SPILL RESISTANT TRANSITION CUP

BACKGROUND OF THE INVENTION

Cross Reference.

[0001] This application is based on and claims priority to U.S. Application No. 14/211,365 filed March 14, 2014 and U.S. Application No. 14/657,108 filed March 13, 2015. Field of the Invention.

[0002] This invention relates generally to a cup, and more particularly, but not by way of limitation, to a spill resistant transition cup.

Description of the Related Art.

[0003] The transition from baby bottles to drinking from a regular cup is difficult for children. The mechanism of drinking is different, and a cup must be held more carefully than a baby bottle to prevent spills. Many children stop drinking from baby bottles before they have the dexterity necessary to drink from a cup without spilling its contents. One common solution is the sippy cup. A sippy cup typically has a lid with a spout and a valve, through which the contents of the cup may be drunk. The valve helps prevent spills should the sippy cup tip over.

[0004] The valve forces a user to suck on the spout, making the mechanism of drinking from a sippy cup similar to that of drinking from a baby bottle. The sucking process can also cause excruciating inner ear pain in children that are experiencing sinus congestion and/or infections. The valve is often made of silicone or a similar substance that must be separately washed. Washing a valve may be quite difficult due to its shape, and thus sippy cup valves are frequently less than ideally clean and often require regular replacement. Constantly sucking on sippy cup spouts may adversely affect the development of a child's teeth and mouth. Similarly, chewing on a sippy cup spout, as often happens, may not be healthy for the child. The use of a sippy cup may also discourage a child from learning how to properly drink from a regular cup, as the sippy cup may be held at any angle while drinking without spilling.

[0005] Other populations would likewise benefit from a cup that is spill resistant, such as the elderly and those with dexterity issues.

[0006] Based on the foregoing, it is desirable to provide an alternative to the sippy cup that provides a proper transition from a baby bottle to a standard drinking cup.

[0007] It is further desirable to provide a cup that simulates the feeling of drinking from a regular cup while providing some spill resistance. [0008] It is further desirable to provide a spill resistant cup that does not have a valve.

[0009] It is further desirable to provide a spill resistant cup that encourages children to learn how to hold a cup properly while drinking from it to prevent spills.

SUMMARY OF THE INVENTION

[0010] In general, in a first aspect, the invention relates to a spill resistant cup comprising: a substantially hollow lower body with a top and a bottom, where the bottom of the lower body is closed and the top of the lower body is open; a substantially hollow upper body with a top and a bottom, where the top of the upper body is closed and the bottom of the upper body is open, the open bottom of the upper body corresponds to the open top of the lower body such that the upper body and the lower body together form a single vessel, and the top of the upper body has an opening, where the opening has a smaller diameter than the upper body; and an opening between the lower body and the upper body, where the opening has a smaller diameter than the lower body and the upper body. Fluid in the lower body may travel through the opening between the lower body and the upper body and into the upper body and then may travel through the opening in the top of the upper body when the cup is tipped sufficiently, but the fluid will not exit the cup significantly if the cup merely falls over.

[0011] The upper body may have a diameter greater than the diameter of the lower body. The upper body and the lower body may be hollow. The cup may further comprise an arcuate lip projecting upward from the upper body such that the lip simulates a section of a rim of a drinking glass. The opening in the top of the upper body may be adjacent the lip. The cup may further comprise a second opening in the top of the upper body. The cup may further comprise a cover attached to the top of the upper body such that the cover may temporarily cover the opening in the top of the upper body. The cover may be slideably attached to the top of the upper body such that the cover may slide over the opening to cover it, or the cover may be a snap-through plug that snaps into the opening. The top of the upper body may be bowl-shaped. The cup may further comprise a lid that fits atop the bowl-shaped top of the upper body.

[0012] The cup may further comprise an insert located adjacent the top of the lower body, where the opening between the lower body and the upper body is located in the insert. The insert may have a recess and the lower body may have a projection that fits within the recess such that the insert may be placed within the lower body only if the recess aligns with the projection. The insert may have a downwardly projecting trough attached thereto. The trough may angle backward away from the insert such that fluid in the lower body may travel up the trough only if the cup is tilted past 90°. Alternately, the upper body may have a downwardly projecting trough attached thereto, where the trough extends from the top of the upper body to the insert, or to the opening between the upper body and the lower body if there is no insert, such that fluid may flow from the lower body, through the insert and/or the opening between the upper body and the lower body, along the trough, and out of the cup at the opening in the top of the upper body when the cup is tipped sufficiently.

[0013] The lower body may be generally pyramid, upside-down pyramid, or prism shaped. If the lower body is generally pyramid shaped, the lower body may have a flat bottom, a plurality of triangular sides joined by a plurality of corners, and an apex, where the open top of the lower body is located at the apex. The upper body may have a downwardly projecting trough attached thereto, where the trough extends from the opening in the top of the upper body to the opening between the upper body and the lower body, and where the trough aligns with one of the corners of the lower body. The cup may further comprise a funnel-like structure extending from the opening in the top of the upper body to the trough, such that the funnel-like structure extends from the opening in the top of the upper body to the trough and the trough extends from the funnel-like structure to the opening in the bottom of the upper body, where the funnel-like structure has a wide end and a narrow end and where the narrow end is adjacent the trough.

[0014] The upper body may comprise an upper portion and a lower portion, where the lower portion is attached to the base. The upper portion of the upper body may have a threaded lower edge and the lower portion of the upper body may have a threaded upper edge such that the upper portion attaches to the lower portion by screwing the threaded lower edge to the threaded upper edge.

[0015] In a second aspect, the invention relates to a spill resistant cup comprising: a substantially hollow body with a top and a bottom, where the bottom of the body is closed and the top of the body is open; a lid with a top and at least one side wall, where the lid is removably attached to the body such that the lid spans the top of the body and where the top of the lid has an opening; and an insert located between and spaced from the top of the lid and the bottom of the body, where the insert has an opening and where the opening in the insert aligns with the opening in the lid. The body may have one or more flat panels such that when the cup tips over it tends to rest on one of the one or more flat panels. The opening in the lid may not align with any of the one or more flat panels of the body.

[0016] The body may have a rim adjacent the top, the lid may have a rim, and the lid may removably attach to the body via the two rims. The at least one sidewall of the lid may comprise the rim of the lid. The rim of the body may have a tab and the rib of the lid may have a corresponding recess such that the lid may be removably attached to the body in only one orientation. The rim of the body may have threads and the rim of the lid may have corresponding threads such that the lid may be screwed onto the body.

[0017] The top of the lid may have a truncated hyperbolic paraboloid shape. The at least one sidewall of the lid may have one or more flat portions aligned with the one or more flat panels of the body. The spill resistant cup may further comprise a trough located adjacent the opening in the lid such that liquid must travel along the trough to exit the cup via the opening in the lid. The lid may further comprise a vent hole, and the insert may further comprise a vent hole. The vent hole in the insert and the opening in the insert may be a single slit. The insert may be removably attached to the lid, or may be integral to the lid. A hood may be located between the opening in the insert and the opening in the lid. One or more posts may extend downward from the insert. The one or more posts may be located adjacent the opening in the insert. The cup may be insulated.

[0018] In a third aspect the invention relates to a spill resistant cup comprising: a substantially closed vessel with an interior shape defining an interior space, where the vessel has a top and an opposing bottom, and where the vessel is shaped such that it has one or more predictable landing positions, where a landing position is a position in which the cup comes to rest when placed on a surface other than on its bottom; an opening in the top of the vessel, where the opening is positioned such that it is not down when the cup is in any of the predictable landing positions; and an insert between the top and the bottom of the vessel with an opening aligned with the opening in the top of the vessel, where the insert has a perimeter matching the interior shape of the vessel at the location of the insert such that liquid cannot travel past the insert other than through the opening in the insert.

BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a side view of a first embodiment of the spill resistant cup;

[0020] Figure 2 is a back view of the first embodiment of the spill resistant cup;

[0021] Figure 3 is a perspective view of the first embodiment of the spill resistant cup;

[0022] Figure 4 is a wireframe perspective view of the first embodiment of the spill resistant cup;

[0023] Figure 5 is a bottom view of the first embodiment of the spill resistant cup;

[0024] Figure 6 is a top view of the first embodiment of the spill resistant cup;

[0025] Figure 7 is a perspective view of the bottom portion of the first embodiment of the spill resistant cup; [0026] Figure 8 is a perspective view of the top portion of the first embodiment of the spill resistant cup;

[0027] Figure 9 is a perspective view of the lid of the first embodiment of the spill resistant cup;

[0028] Figure 10 is a perspective view of a second embodiment of the spill resistant cup;

[0029] Figure 11 is an exploded view of the second embodiment of the spill resistant cup;

[0030] Figure 12 is a top view of the second embodiment of the spill resistant cup;

[0031] Figure 13 is a bottom view of the second embodiment of the spill resistant cup;

[0032] Figure 14 is a side cut away view of the second embodiment of the spill resistant cup;

[0033] Figure 15 is a perspective view of a third embodiment of the spill resistant cup;

[0034] Figure 16 is an exploded view of the third embodiment of the spill resistant cup;

[0035] Figure 17 is an exploded view of the third embodiment of the spill resistant cup from a different angle than that shown in Figure 16;

[0036] Figure 18 is a top view of the third embodiment of the spill resistant cup;

[0037] Figure 19 is a bottom view of the third embodiment of the spill resistant cup;

[0038] Figure 20 is a side cut away view of the third embodiment of the spill resistant cup;

[0039] Figure 21 is a perspective view of a fourth embodiment of the spill resistant cup;

[0040] Figure 22 is an exploded view of the fourth embodiment of the spill resistant cup;

[0041] Figure 23 is a top view of the fourth embodiment of the spill resistant cup;

[0042] Figure 24 is a bottom view of the fourth embodiment of the spill resistant cup;

[0043] Figure 25 is a side cut away view of the fourth embodiment of the spill resistant cup;

[0044] Figure 26 is a perspective view of a fifth embodiment of the spill resistant cup;

[0045] Figure 27 is an exploded view of the fifth embodiment of the spill resistant cup;

[0046] Figure 28 is a top view of the fifth embodiment of the spill resistant cup;

[0047] Figure 29 is a bottom view of the fifth embodiment of the spill resistant cup;

[0048] Figure 30 is a cut away view of the fifth embodiment of the spill resistant cup;

[0049] Figure 31 is a perspective view of the fifth embodiment of the spill resistant cup, showing the cup landing on its front and coming to rest on its side;

[0050] Figure 32 is a perspective view of an alternate insert design;

[0051] Figure 33 is a top view of the alternate insert design; [0052] Figure 34 is a side view of the alternate insert design;

[0053] Figure 35 is a front view of the alternate insert design;

[0054] Figure 36 is a bottom view of the alternate insert design; and

[0055] Figure 37 is a perspective view of the spill resistant cup with insulation and an alternate insert design.

[0056] Other advantages and features will be apparent from the following description and from the claims.

DETAILED DESCRIPTION OF THE INVENTION

[0057] The devices and methods discussed herein are merely illustrative of specific manners in which to make and use this invention and are not to be interpreted as limiting in scope.

[0058] While the devices and methods have been described with a certain degree of particularity, it is to be noted that many modifications may be made in the details of the construction and the arrangement of the devices and components without departing from the spirit and scope of this disclosure. It is understood that the devices and methods are not limited to the embodiments set forth herein for purposes of exemplification.

[0059] In general, in a first aspect, the invention relates to a spill resistant cup with a bottom portion 1 and a top portion 2, as seen in Figures 1 through 20. The spill resistant cup may also have a lid 3, as seen in Figures 1 through 3. The bottom portion 1 may have two sections: a pyramid, shaped section 4 and a hemispherical section 5, as seen in Figures 1 through 3 and 7 and in Figures 15 through 17. Alternately, the pyramid- shaped section 4 may have a different shape, such as an upside-down pyramid shape or a prism shape. Alternately, the bottom portion 1 may not have a pyramid-shaped section or a hemispherical section, as seen in Figures 10 through 14, but rather may comprise a single section. The top portion 2, with the lid 3 in place if there is a lid 3, may be generally hemispherical. If the bottom portion 1 has a hemispherical section 5, the top portion 2 and the hemispherical section 5 of the bottom portion 1, along with the lid 3 if there is a lid 3, may generally form a sphere mounted atop the pyramid of the pyramid-shaped section 4 of the bottom portion 1. The lid 3 may be shaped such that an opening 6 is provided between the lid 3 and the top potion 2, seen in Figures 1 through 3 and 7. The top portion 2 may have a lip 7 adjacent the opening 6. If there is no lid 3, the top portion 2 may house the opening 6, as seen in Figures 10 through 17.

[0060] Alternately, the top portion 2 and the hemispherical section 5 of the bottom portion 1 , and optionally the lid 3 as discussed above, may generally form a three dimensional structure other than a sphere, such as an ellipsoid, a prolate spheroid, a character's head, or any other desired shape. Likewise, the top portion 2 may not be hemispherical regardless of the presence of a hemispherical section 5 in the bottom portion 1. In either case, each of the sections herein described as hemispherical may be not actually hemispherical but rather shaped like a portion of the three dimensional structure and/or other shape. For example, in Figures 10 through 20, the top of the hemisphere is concave rather than convex. For the sake of simplicity, this structure is referenced as hemispherical throughout this application; however, this language is not limiting and the aspects of the invention described as such are equally applicable to any three dimensional structure, whether spherical/hemispherical or not.

[0061] Figures 7, 11, 16, and 17 show the bottom portion 1 without the top portion 2 attached. The bottom portion 1 may be hollow, such that it may hold fluid for drinking. The bottom portion 1 may have a triangular bottom 8, as shown in the Figures 5 and 19; alternately, the bottom 8 may be any polygon, allowing the pyramid-shaped section 4 to have any desired number of sides. This would allow the spill resistant cup to settle quickly if tipped over. Another alternative is for the bottom 8 to be circular or otherwise at least partially curved, as shown in Figures 10 through 14, such that the pyramid-shaped section 4 is cylindrical, conical, or has any other desired shape. If the bottom 8 is partially curved, it may ideally have at least one flat portion to allow the spill resistant cup to settle along that side if tipped over. For example, the cup shown in Figures 10 through 14 has two flat portions, allowing the cup to settle on one of those two sides. Another alternative is for the bottom portion 1 to omit the hemispherical section, again as shown in Figures 10 through 14. If so, the top portion 2 may similarly not be hemispherical.

[0062] If the bottom 8 is a polygon, as in Figures 1 through 4 and 15 through 17, the pyramid-shaped section 4 may have a plurality of triangular sides 9 joined by corners 10. The corners 10 may be rounded. The apex 11 of the pyramid-shaped section 4 may be open into the hemispherical section 5, such that fluid may flow from the pyramid- shaped section 4 into the hemispherical section 5 and vice versa. A rim 12 may extend upward from the hemispherical section 5.

[0063] The hemispherical section 5 may be actually hemispherical, forming half of a sphere with the top portion 2 and lid 3 forming the other half of the sphere, or may be more or less than half of a sphere, with the top portion 2 and lid 3 forming the remainder of the sphere. The sphere formed by the hemispherical section 5, the top portion 2, and the lid 3 may have a diameter larger than the width of the pyramid-shaped section 4. Thus, when the spill resistant cup tips over, the top of the spill resistant cup may be inclined upward, discouraging spills.

[0064] Figure 8 shows the top portion 2 without the bottom portion 1 and lid 3. As seen in Figure 8 and the wireframe view in Figure 4, the top portion 2 may have an exterior portion 13 shaped like a spherical section and an interior portion 14 shaped like a funnel, where the interior portion 14 is joined to the exterior portion 13 along their upper edges. Extending downward from the interior portion 14 may be a trough 15. When the spill resistant cup is fully assembled, the trough 15 may extend through the hemispherical section 5 of the bottom section to the apex 11 of the pyramid-shaped section 4 of the bottom portion 1 , allowing fluid to flow out of the pyramid-shaped section 4, along the trough 15, along the interior portion 14 of the top portion 2, and out of the spill resistant cup, when the cup is angled properly.

[0065] Alternately, the trough 15 may be attached to a separate middle portion 17 that fits between the bottom portion 1 and top portion 2, as seen in Figures 11 and 14. The trough 15 may angle backward from top to bottom, discouraging fluid from traveling up the trough 15 unless the cup is tipped past 90°. The middle portion 17 may have an opening 18 at the top of the trough 15, allowing fluid to flow from the trough 15 into the top portion 2 when the cup is tipped sufficiently, and allowing fluid to flow from the top portion 2 into the bottom portion 1 when the cup is upright. The middle portion 17 may angle down inward toward the opening 18 to encourage fluid in the top portion 2 to enter the bottom portion 1 via the opening 18, as seen in Figure 14. The middle portion 17 may have a notch 19 that fits onto a protrusion 20 on the inside of the bottom portion 1 to ensure proper alignment of the trough 15, as seen in Figure 11. The top portion 2 may have an opening 6 adjacent the lip 7, such that fluid entering the top portion 2 from the bottom portion 1 via the opening 18 in the middle portion 17 may exit the cup and be drunk by the user at the lip 7, as from an ordinary cup. The top portion 2 may also have an opening 21 at its center to allow the cup to be filled easily without removing the top portion 2 from the bottom portion 1.

[0066] Alternately, the trough 15 may be located within the top portion 2 rather than the bottom portion 1, as seen in Figure 20. The trough 15 may extend from the opening 6 in the top portion 2 to an opening 23 in an insert 24 located within the bottom portion 1. In particular, the insert 24 may be located where the pyramid-shaped section 4 meets the hemispherical section 5.

[0067] Alternately, the cup may not have a trough, as shown in Figures 21 through 25. The cup may have an insert 25 that fits within the top of the bottom portion 1 and separates the bottom portion 1 from the top portion 2. The insert 25 may have an opening 26 therein that allows fluid to flow past the insert 25. The insert 25 may be thicker around its outer edges than around the opening, as shown Figure 25, such that both the top and bottom surfaces of the insert 25 angle inward, encouraging the flow of fluid through the opening 26 whether the cup is right side up (where fluid flows from the top portion 2 to the bottom portion 1) or upside down (where fluid flows from the bottom portion 1 to the top portion 2). Optionally, the trough 15 may be integral to the wall of the cup. If so, the cup may have a bottle neck shape either in the bottom portion 1 or the top portion 2. This cup design promotes the transfer of fluid past the insert 25 when such transfer is desirable.

[0068] The opening 26 may be centered in the insert 25, as shown, or may be located anywhere else along the insert 25 as desired. The top portion 2 may or may not have an opening 21, as shown in Figure 10; if it does, the opening 21 and the opening 26 may or may not be aligned. The opening 26, as well as the opening 21, may be located anywhere along a shared center line. Both landing positions share a horizontal diameter. By misaligning the two holes along this diameter, spurting fluid from shaking or tipping misses the uppermost opening 21 and is contained in the top portion 2. This applies to the embodiment shown in Figures 10 through 14, as well.

[0069] In any of the embodiments, the cup may further comprise a cover 22 located such that it may slide over the opening 6 to further prevent spills when the cup is not in use or slide away from the opening 6 when the cup is in use, thus allowing fluid to flow out of the opening 6 to be drunk by the user. The cover 22 may be seen in Figures 15 through 18.

[0070] The bottom portion 1 may have a rim 12 extending upward and the top portion 2 may have a rim 16 extending downward, such that the top portion 2 may attach to the bottom portion 1 along the rims 12 and 16, respectively. The rims 12 and 16 may form a twist lock, such that the top portion 2 may be placed on the bottom portion 1 and twisted a short distance, causing the twist lock of rims 12 and 16 to engage, thus preventing the top portion 2 from being removed from the bottom portion 1 without untwisting. Alternately, the rims 12 and 16 may be threaded such that they may be joined to each other by twisting. Alternately, the rims 12 and 16 may have any other appropriate mechanism for attaching to one another such that the top portion 2 may be secured to the bottom portion 1 via the rims 12 and 16. The spill resistant cup may have a gasket (not shown) located at the rims 12 and 16 to prevent leakage of fluid from the cup.

[0071] As seen in Figures 4 and 20, the trough 15 may aligned such that, when the top portion 2 is fully secured to the bottom portion 1 with the rims 12 and 16 fully engaged with each other, the trough 15 lines up with one of the corners 10 of the pyramid-shaped section 4 of the bottom portion 1. Thus, if the fully assembled spill resistant cup tips over, it will settle along one of the sides 9 of the pyramid-shaped section 4 and any fluid that travels through the apex 11 from the pyramid-shaped section 4 into the hemispherical section 5 will not travel along the trough 15, but rather into the body of the hemispherical section 5 itself. Upon righting the spill resistant cup, the fluid that has traveled into the hemispherical section 5 may return to the pyramid- shaped section 4 due to gravity and the geometry of the spill resistant cup.

[0072] As noted above, the top portion 2 may have a lip 7. The lip 7 may extend from the top portion 2 and may be aligned with the trough 15, such that the trough 15 is properly aligned for fluid transfer when the cup is used with the lip 7 at the user's mouth. The lip 7 may be generally shaped like a portion of the rim of a regular cup; thus, drinking from the spill resistant cup at the lip 7 replicates the feeling of drinking from a regular cup. This provides for an easier transition between using the spill resistant cup and using a regular cup. The lip 7 also provides an easy indicator of the proper alignment of the trough 15.

[0073] Figure 9 shows the lid 3. The lid 3 may be generally shaped like a spherical cap, such that the lid 3 may fit against the spherical section that is the exterior portion 13 of the top portion 2 to complete a hemisphere. As noted above, the lid 3 may have an opening 6, which may be located along one of its edges. When the lid 3 is in place on the spill resistant cup, fluid traveling from the pyramid-shaped section 4 along the trough 15 and along the interior portion 14 of the top portion 2 may exit the spill resistant cup via the opening 6. The lid 3 may be placed on the spill resistant cup in such a way that the opening 6 is adjacent the lip 7, allowing a user to drink from the cup at the lip 7 through the opening 6.

[0074] Alternately, the invention may relate to a spill resistant cup with a body 101 and a lid 102, as seen in Figure 26. The body 101 may be hollow, such that it may hold fluid for drinking. The body 101 may be at least partially curved, and may have at least one flat portion 103 to encourage the spill resistant cup to settle on the flat portion 103 if tipped over. Alternately, the flat portion 103 may not be flat, but may be substantially flat, gently curved, or curved. The body 101 may be generally cylindrical or may have an hourglass shape, as shown, or any other desired shape. For example, the body 101 may be an elliptic cylinder or other cylinder with a non-circular cross section, such as an oval cross section. If so, the flat portion 103 may not be flat, but may be merely an area along the existing curve of the cylinder. The body 101 may have an open top 104 and a closed bottom 105. The bottom 105 may be generally flat, and may have a protrusion 106 along its edge and a circular protrusion 107 on its face, as shown in Figures 29 and 30. The body 101 may optionally be at least partially insulated, as shown in Figure 37.

[0075] The body 101 may have a rim 108 extending upward adjacent its open top 104. The lid 102 may have a corresponding rim 109 extending downward, such that lid 102 may attach to the body 101 along the rims 108 and 109. Rim 108 may have a tab 110 and rim 109 may have a corresponding recess 111, ensuring that the lid 102 is placed on the body 101 in a desired orientation. In general, it is desirable for the flat portion 103 not to align with any opening in the lid 102 to minimize the possibility of liquid escaping the spill resistant cup if it tips over and comes to rest on the flat portion 103. The tab 110 and recess 111 may be oriented such that the flat portion 103 is 90° from the opening 112 in the lid 102, as shown.

[0076] The rims 108 and 109 may form a twist lock, such that the lid 102 may be placed on the body 101 and twisted a short distance, causing the twist lock to engage, thus preventing the lid 102 from being removed from the body 101 without untwisting. Alternately, the rims 108 and 109 may be threaded such that they may be joined to each other by twisting. Alternately, the rims 108 and 109 may join together through a friction fit. Alternately, the rims 108 and 109 may have any other appropriate mechanism for attaching to one another such that the lid 102 may be secured to the body 101 via the rims 108 and 109. The spill resistant cup may have a gasket (not shown) located at the rims 108 and 109 to prevent leakage of fluid from the cup.

[0077] The lid 102 may have an opening 112 through which liquid in the cup may be drunk by a user. The opening 112 may be circular or oval-shaped, as shown in Figures 26 through 28 and 31, or any other desired shape. A vent hole may be located in the lid 102 opposite the opening 112. The lid 102 may be saddle-shaped or, more particularly, shaped like a truncated hyperbolic paraboloid, as shown. This shape may make it difficult for the cup to rest upside down on the lid 102, encouraging the cup to rest on its side if dropped. Alternately, the lid may have any desired shape. The lid 102 may have a center depression 113, which may be oval-shaped. The lid 102 may have a generally vertical side wall 114, which may be generally curved. The side wall 114 may have at least one flat portion 115, which may align with the at least one flat portion 103 to further encourage the cup to rest along these flat portions 103 and 115 when tipped over, as shown in Figure 31. Again, the flat portion 115 may or may not be actually flat, depending on the geometry of the lid 102. The flat portion 115 may not align with the opening 112. The opening 112 may be located at a point 90° from the flat portion 115, or otherwise out of alignment such that the opening 112 is not pointed downward when the cup is resting on the flat portion 115. The front of the lid 102 may be higher or lower than the back of the lid 102, again to encourage the cup to tip onto its side if it lands or is placed upside down on its top.

[0078] The lid 102 may have a trough 116 adjacent the opening 112 such that liquid from within the cup must travel along the trough 116 to exit the cup via the opening 112. When the cup is upside down or on its side, this trough 116 may prevent liquid that has collected within the lid 102 behind the trough 116 from reaching the opening 112.

[0079] The lid 102 may have a vent hole located opposite the opening 112 to allow air to enter the cup when the user is drinking or pouring liquid from the opening 1 12.

[0080] An insert 117 may be attached to and extend downward from the lid 102. The insert 117 may be attached to the lid 102 either permanently or removably via one or more elongate structures or assemblies. For example, as shown in Figure 27, the insert 117 may be attached to the lid 102 via a single assembly comprising a cylinder 118, which may be attached to the lid 102, and a cylinder 119, which may extend upward from the insert 117. The cylinder 119 may removably attach to the cylinder 118, allowing the insert 117 to be easily removed for cleaning. The insert may extend into the body 101 and may be circular or other shape to match the shape of the interior of the body 101 at the point the insert 117 hits. The insert 117 may be sized such that it fits closely along the interior wall of the body 101, preventing liquid from traveling between the insert 117 and the wall of the body 101. The insert 117 may have one or more holes 120 therethrough. As shown in Figure 2, one hole 120 may be aligned with the opening 112 in the lid 102, while a second hole 120 may be opposite the first hole 120, allowing air to travel from above the insert 117 to below the insert 117 when liquid is traveling through the hole 120 aligned with the opening 112. The second hole 120 may be smaller than the first hole 120 to minimize how much liquid can travel through the second hole 120 when the cup is dropped or tipped other than during proper use. Alternately, the hole 120 may be a single slit extending across the insert 117, as shown in Figure 37. The slit design would allow liquid to travel through one end of the slit while air is vented through the opposite end of the slit. If the hole 120 is a slit, it may be parallel to the flat portion 115 or the plane in which the flat portion 115 lies, if the flat portion 115 is not flat, so that the hole 120 is not pointed downward when the cup is resting on the flat portion 115.

[0081] The insert 117 may be substantially flat, as shown in Figure 27, or may be angled, as shown in Figures 32 through 36. A hood 121 may extend upward from the insert 117 and over the first hole 120, preventing liquid splashing through the first hole 120 from traveling directly to the opening 1 12 in the lid 102, thus further preventing unwanted spills. The hood 121 may be open on its sides to allow liquid traveling through the first hole 120 to continue to the opening 112 when the cup is tipped intentionally. One or more posts 122 may extend downward from the insert 117 near the first hole 120 to prevent ice located within the cup from blocking the first hole 120 during use.

[0082] During use, a user may drink from the cup via the opening 112. As the user tips the cup to drink from the opening 112, liquid from within the body 101 may travel through the hole 120, along the trough 116, and out the opening 112 unimpeded, simulating the experience of drinking from a regular cup or glass. If the cup is tipped in any other direction, the amount of liquid that can travel through the holes 120 may be limited by their location. For example, if the cup is tipped on its side, no liquid can reach the holes 120 unless the cup is more than half full. If it is more than half full, the speed at which liquid can travel through the holes 120 may be limited because both holes will be covered with liquid, creating a weak vacuum. Any liquid that does travel through the holes 120 would then have to fill the space between the insert 117 and the lid 102 at least halfway to reach the opening 112, which may further limit the quantity and speed of liquid that ultimately spills. This may provide the user an opportunity to right the cup before liquid is spilled, or at least limit, if not entirely prevent, liquid from spilling from the cup if it is left on its side. The hood 121 may further limit the speed and quantity of unwanted spills. The shape of the cup may allow it to rest in this optimal side-lying position regardless of how it initially lands. The trough 116 may further impede the liquid from spilling when the cup is oriented other than for normal drinking, particularly if it lands or is placed upside down. The shape of the lid 102 may encourage the cup to fall on its side if placed upside down, but if not, the liquid must accumulate in the space between the insert 117 and the lid 102 at least as high as the length of the trough before liquid can reach the opening 112.

[0083] Whereas, the devices and methods have been described in relation to the drawings and claims, it should be understood that other and further modifications, apart from those shown or suggested herein, may be made within the spirit and scope of this invention.

Claims

WHAT IS CLAIMED IS:

1. A spill resistant cup comprising:

a substantially hollow lower body with a top and a bottom, where the bottom of the lower body is closed and the top of the lower body is open;

a substantially hollow upper body with a top and a bottom, where:

the top of the upper body is closed and the bottom of the upper body is open;

the open bottom of the upper body corresponds to the open top of the lower body, such that the upper body and the lower body together form a single vessel; and

the top of the upper body has an opening, where the opening has a smaller diameter than the upper body; and

an opening between the lower body and the upper body, where the opening has a smaller diameter than the lower body and the upper body;

such that fluid in the lower body may travel through the opening between the lower body and the upper body and into the upper body and then may travel through the opening in the top of the upper body when the cup is tipped sufficiently, but the fluid will not exit the cup significantly if the cup merely falls over.

2. The spill resistant cup of Claim 1 where the bottom of the lower body has one or more straight edges such that when the cup tips over it tends to rest on one of the one or more straight edges.

3. The spill resistant cup of Claim 2 where the opening in the top of the upper body does not align with any of the one or more straight edges of the bottom of the lower body.

4. The spill resistant cup of Claim 1 where the upper body has a diameter and the lower body has a diameter and where the diameter of the upper body is greater than the diameter of the lower body.

5. The spill resistant cup of Claim 1 where the upper body and the lower body are substantially hollow.

6. The spill resistant cup of Claim 1 further comprising an arcuate lip projecting upward from the upper body such that the lip simulates a section of a rim of a drinking glass.

7. The spill resistant cup of Claim 6 where the opening in the top of the upper body is adjacent the lip.

8. The spill resistant cup of Claim 6 further comprising a second opening in the top of the upper body.

9. The spill resistant cup of Claim 1 where the top of the upper body is bowl-shaped.

10. The spill resistant cup of Claim 9 further comprising a lid that fits atop the bowl-shaped top of the upper body.

11. The spill resistant cup of Claim 1 further comprising an insert located adjacent the top of the lower body, where the opening between the lower body and the upper body is located in the insert.

12. The spill resistant cup of Claim 11 where the insert has a recess and the lower body has a projection that fits within the recess such that the insert may be placed within the lower body only if the recess aligns with the projection.

13. The spill resistant cup of Claim 11 where the insert has a downwardly projecting trough attached thereto.

14. The spill resistant cup of Claim 13 where the trough angles backward away from the insert such that fluid in the lower body may travel up the trough only if the cup is tilted past 90°.

15. The spill resistant cup of Claim 11 where the upper body has a downwardly projecting trough attached thereto, where the trough extends from the top of the upper body to the insert.

16. The spill resistant cup of Claim 1 where the upper body has a downwardly projecting trough attached thereto, where the trough extends from the opening in the top of the upper body to the opening between the upper body and the lower body such that fluid may flow from the lower body, through the opening between the upper body and the lower body, along the trough, and out of the cup at the opening in the top of the upper body when the cup is tipped sufficiently.

17. The spill resistant cup of Claim 1 where:

the lower body is generally pyramid shaped such that the lower body has a flat bottom, a plurality of triangular sides joined by a plurality of corners, and an apex, where the open top of the lower body is located at the apex.

18. The spill resistant cup of Claim 17 where the upper body has a downwardly projecting trough attached thereto, where the trough extends from the opening in the top of the upper body to the opening between the upper body and the lower body, and where the trough aligns with one of the corners of the lower body.

19. The spill resistant cup of Claim 18 further comprising a funnel-like structure extending from the opening in the top of the upper body to the trough, such that the funnel-like structure extends from the opening in the top of the upper body to the trough and the trough extends from the funnel-like structure to the opening in the bottom of the upper body, where the funnel-like structure has a wide end and a narrow end and where the narrow end is adjacent the trough.

20. The spill resistant cup of Claim 1 where the upper body comprises an upper portion and a lower portion, where the lower portion is attached to the base.

21. The spill resistant cup of Claim 20 where the upper portion of the upper body has a threaded lower edge and where the lower portion of the upper body has a threaded upper edge such that the upper portion attached to the lower portion by screwing the threaded lower edge to the threaded upper edge.

22. The spill resistant cup of Claim 1 where the top of the upper body has a protrusion located opposite the opening such that the protrusion prevents the cup from resting upside down on the top of the upper body.

23. A spill resistant cup comprising: a substantially closed vessel with an exterior shape and an interior shape defining an interior space, where the vessel has a top and an opposing bottom, where the vessel has a widest point located nearer the top than the bottom, and where the vessel is shaped such that it has one or more predictable landing positions, where a landing position is a position in which the cup comes to rest when placed on a surface other than on its bottom;

a drinking lip protruding from the top of the vessel, where the drinking lip is positioned such that it is not down when the cup is in any of the predictable landing positions;

an opening in the top of vessel with a width narrower than the top of the vessel; and

a point of constriction between the top and the bottom of the vessel such that the interior shape of the vessel, the exterior shape of the vessel, an insert within the vessel, or a combination thereof make the interior space narrowest at the point of constriction.

24. A spill resistant cup comprising:

a substantially hollow body with a top and a bottom, where the bottom of the body is closed and the top of the body is open;

a lid with a top and at least one side wall, where the lid is removably attached to the body such that the lid spans the top of the body and where the top of the lid has an opening; and

an insert located between and spaced from the top of the lid and the bottom of the body, where the insert has an opening and where the opening in the insert aligns with the opening in the lid.

25. The spill resistant cup of Claim 24 where the body has one or more flat panels such that when the cup tips over it tends to rest on one of the one or more flat panels.

26. The spill resistant cup of Claim 25 where the opening in the lid does not align with any of the one or more flat panels of the body.

27. The spill resistant cup of Claim 24 where the body has a rim adjacent the top, the lid has a rim, and the lid removably attaches to the body via the two rims.

28. The spill resistant cup of Claim 27 where the at least one sidewall of the lid comprises the rim of the lid.

29. The spill resistant cup of Claim 27 where the rim of the body has a tab and the rib of the lid has a corresponding recess such that the lid may be removably attached to the body in only one orientation.

30. The spill resistant cup of Claim 27 where the rim of the body has threads and where the rim of the lid has corresponding threads such that the lid may be screwed onto the body.

31. The spill resistant cup of Claim 24 where the top of the lid has a truncated hyperbolic paraboloid shape.

32. The spill resistant cup of Claim 24 where the body has one or more flat panels such that when the cup tips over it tends to rest on one of the one or more flat panels and where the at least one sidewall of the lid has one or more flat portions aligned with the one or more flat panels of the body.

33. The spill resistant cup of Claim 24 further comprising a trough located adjacent the opening in the lid such that liquid must travel along the trough to exit the cup via the opening in the lid.

34. The spill resistant cup of Claim 24 where the lid further comprises a vent hole.

35. The spill resistant cup of Claim 24 where the insert further comprises a vent hole.

36. The spill resistant cup of Claim 35 where the vent hole in the insert and the opening in the insert are a single slit.

37. The spill resistant cup of Claim 36 where the body has one or more flat panels such that when the cup tips over it tends to rest on one of the one or more flat panels and where the slit is parallel to the one or more flat panels.

38. The spill resistant cup of Claim 24 where the insert is removably attached to the lid.

39. The spill resistant cup of Claim 24 where the insert is integral to the lid.

40. The spill resistant cup of Claim 24 further comprising a hood located between the opening in the insert and the opening in the lid.

41. The spill resistant cup of Claim 24 further comprising one or more posts extending downward from the insert.

42. A spill resistant cup comprising:

a substantially closed vessel with an interior shape defining an interior space, where the vessel has a top and an opposing bottom, and where the vessel is shaped such that it has one or more predictable landing positions, where a landing position is a position in which the cup comes to rest when placed on a surface other than on its bottom;

an opening in the top of the vessel, where the opening is positioned such that it is not down when the cup is in any of the predictable landing positions; and

an insert between the top and the bottom of the vessel with an opening aligned with the opening in the top of the vessel, where the insert has a perimeter matching the interior shape of the vessel at the location of the insert such that liquid cannot travel past the insert other than through the opening in the insert.