Patent Application
20100065525
The present invention relates to drinking bottles, and more particularly to closures for drinking bottles.
Plastic drinking bottles, such as water and soda bottles, have gained in popularity presumably in part because they provide a convenient way to transport beverages. Drinking bottles are typically reclosable and are formed from a lightweight plastic material. The bottles are therefore extremely portable, reclosable and provide access to beverages where such access may not otherwise be available.
Most drinking bottles have a removable threaded cap, which allows the user to easily twist the cap off of the bottle, take a drink, and twist the cap back on the bottle to close it. In such a configuration, threading is typically included on the inside of the cap and is arranged to correspond to threading on the outside of the neck of the bottle. Although the threaded connection between the cap and the bottle sufficiently seals the bottle to prevent fluid leakage, the neck of the bottle forms a drinking area and the presence of threads on the drinking area can create problems. More specifically, the positioning of the threads on the drinking area of the bottle results in a person's lips contacting the threaded surface when drinking. The threads can be uncomfortable and may create gaps between the lips and the bottle neck that cause the contents of the bottle to dribble when drinking.
The present invention provides a closure assembly for a drinking bottle in which the closure assembly provides a drinking area devoid of threads, snaps or other contoured attachment elements to provide a more comfortable drinking surface. The closure assembly may include a collar that is mounted over the bottle neck and a removable cap that is removably fitted to the collar for opening and closing the bottle.
In one embodiment, the collar includes an outer surface that forms a generally smooth drinking area and an internal neck attachment for securing the collar to the bottle neck. The collar may also include an internal cap attachment for removably securing the cap to the collar.
In one embodiment, the drinking bottle includes a cavity for storing a fluid and a threaded neck that forms an opening at a dispensing end of the bottle. A removable collar at least partially covers the threaded neck and provides a generally smooth outer surface for a person's mouth and lips to contact when drinking from the bottle. The collar includes a threaded inner surface that is interfitted with the threaded neck for retaining the collar on the bottle. A removable threaded cap can be selectively attached to another threaded portion on the inner surface of the collar for opening and closing the bottle.
Optionally, the collar may include a plurality of tabs that engage a lip on the bottle to resist the removal of the collar from the bottle. In one embodiment, the threaded portion of the inner surface of the collar can be twisted about the threaded neck of the bottle to move the collar onto the neck and to pull the tabs over the lip.
Optionally, the collar may include a flange extending from its inner surface and positioned between the neck attachment and the cap attachment. The flange may form a pocket for receiving the dispensing end of the bottle.
According to another aspect of the invention, a method of sealing a bottle is provided, including the steps of (a) providing a bottle for storing fluid, the bottle having a neck that defines an opening at a dispensing end of the bottle; (b) providing a collar adapted to at least partially cover the neck, the collar having an outer drinking surface and an inner surface adapted to be connected to the neck; (c) applying the collar to the neck; and (d) providing a removable cap for sealing the opening in the bottle and applying the cap to either the collar or the bottle.
Thus, the present invention provides a bottle that combines the convenience of a resealable cap with the comfort and aesthetically-pleasing look of a smooth collar. The removable cap can be easily twisted on and off of the collar to open and close the bottle as desired, yet the attachment portions on the collar are all positioned internally, such that the outer drinking area does not include any threads or other contoured attachment elements that may create gaps and cause the beverage to dribble when drinking. Further, the sealed connection between the removable cap and the collar ensures that fluid will not leak from the bottle when the cap is attached. The collar can also be selectively removed from the bottle, but may include additional features, such as tabs and the like, to prevent the unintentional removal of the collar from the bottle.
These and other objects, advantages, and features of the invention will be more fully understood and appreciated by reference to the description of the current embodiment and the drawings.
A drinking bottle assembly according to the present invention is shown in
In the illustrated embodiment, the bottle 12 defines a cavity 18 for storing a fluid and includes a threaded neck 20 that forms an opening 22 at a dispensing end 24 of the bottle (
The bottle 12 of the drinking apparatus 10 can be formed in any shape that is suitable for defining a chamber 18 for storing fluid. In the illustrated embodiment, the bottle 12 is generally cylindrical, with the central portion 34 having a slightly larger circumference than that of the upper portion 36 and lower portion 38. The bottle 12 also includes lengthwise indentations 40, which may be included for both aesthetic and functional purposes, as they may possibly allow a person to more easily grip the bottle. The bottle 12 further includes a generally flat base or bottom surface, such that the bottle can stand upright. The bottle 12 may optionally have a wall thickness in the range of approximately 0.5 mm.
The bottle 12 may be made from any suitable material using any appropriate manufacturing process, such as injection molding and blow-type molding, which are generally known in the art. In the illustrated embodiment, bottle 12 has been formed from blow molded plastic, which involves melting down the plastic and forming it into a preform, which is a tube-like piece of plastic with a hole at one end through which compressed air can pass. The preform is typically injection molded to form the tube and threaded neck portion. The preform is then clamped into a mold that is shaped to form the bottle 12, and compressed air is pumped into the preform, which forces the plastic out to match the mold. Once the plastic has cooled and hardened, the mold can be opened so that the the bottle can be ejected (process not shown).
The bottle 12 can be formed from any suitable material. For example, in an embodiment in which the bottle 12 is molded, the bottle 12 may be formed from any suitable, moldable material, such as flexible or semi-rigid plastics, including polyethylene terephthalate (PET). The bottle 12 may be formed from a clear or translucent material, such that the contents of the bottle are visible through the bottle 12. In embodiments in which the bottle is formed using other manufacturing processes, a variety of other materials, including glass and metal, can be used. The bottle 12 can contain any type of fluid, including beverages such as water, soda, juice and the like.
The neck 20 refers to the narrowed portion of the bottle 12 at the dispensing end 24 (
In the illustrated embodiment, the neck 20 includes a set of threads 26 that are positioned on the outer surface of the neck 20, at or near the dispensing end 24 of the bottle. In the illustrated embodiment, the threads 26 correspond to the threads 44 on the inner surface 30 of the collar 14, such that the threads 26 and 44 can be interfitted to retain the collar 14 on the bottle 12. However, the neck 20 and collar 14 can be interfitted and/or retained together using any suitable connection elements, such as snap elements for providing a snap-fit connection. Alternately, the collar 14 can be sized to be press-fitted onto the neck 20.
The collar 14 can be formed in any suitable shape to (a) connect to the bottle 12, (b) at least partially cover the connection elements on the neck 20, and (c) form dispensing opening 50. In the illustrated embodiment, the collar 14 includes an inner attachment portion 46 and an outer sidewall 48 that is spaced from the connecting portion 46 (
As shown in
The threaded connection between the collar 14 and the neck 20 is sufficient to retain the collar on the bottle 12. However, the drinking bottle assembly 10 may alternatively or additionally include other features for retaining the collar 14 in place on the bottle. For example, in the illustrated embodiment, the collar 14 includes a plurality of tabs 52 that engage a lip 54 on the bottle 12 to resist the removal of the collar 14 from the bottle 12. The tabs 52 can provide a snap fit connection between the collar 14 and the bottle 12 that is sufficient to retain the collar 14 on the bottle 12 without the assistance of the interfitted threaded portions 26 and 44 discussed above. However, in the illustrated embodiment, the bottle assembly 10 includes both the threaded portions 26, 44 and the tabs 52.
In the illustrated embodiment, both the tabs 52 and the lip 54 are spaced about the entire circumference of the attachment portion 46 of the collar 14 (
In the illustrated embodiment, once the collar 14 reaches a position in which the tabs 52 have been pushed or pulled or otherwise forced over the threads 26, the threads 44 of the collar 14 are positioned to engage the threads 26 of the neck 20. The collar 14 can be twisted in a clockwise direction about the neck 20, which causes the collar to move or advance further down onto the neck 20, which in turn pulls the tabs 52 over the lip 54 (
As previously noted, the tabs 52 function to resist the collar 14 from being removed from the bottle 12, even if the threads 44 become disengaged from the threads 26 of the neck 20. As shown in
Optionally, the bottle 12 and collar 14 may include features to prevent the collar from being twisted or pressed too far onto the bottle, which may cause damage or stress to the drinking bottle assembly 10. For example, the collar 14 may include a flange 58 that extends from the inner surface 30 (
Optionally, the flange 58 may also function to provide a positive seal against the bottle 12, such that fluid is prevented from leaking between the collar 14 and the bottle 12, and is instead forced to flow through the dispensing opening 50 formed by the collar 14. Optionally, the flange 58 may include a seal or 0-ring for sealing the collar 14 against the bottle 12 (not shown).
To further prevent the collar 14 from being twisted or pressed too far onto the bottle 12, the bottle 12 includes an optional lip 60, positioned below the threads 26. As shown in
In the illustrated embodiment, when the collar 14 is connected to the bottle 12, the sidewall 48 of the collar 14 completely covers the threads 26 on the neck 20 and, thus, provides a smooth outer surface 28 that a person's mouth and lips can engage while drinking. This configuration not only increases comfort for the person drinking, but also provides an aesthetically pleasing drinking bottle. In the illustrated embodiment, the outer drinking surface 28 of the collar 14 is shaped to generally follow the contour of the bottle 12 (
To further increase the comfort for the person drinking, the edge 70 of the collar 14 at the dispensing opening 50 may be smooth and slightly rounded, as opposed to bottles known in the art, which typically include squared edges and seams from the molding process (see
In the illustrated embodiment, the collar 14 includes two separate connection elements on the inner surface 30: (a) a first set of threads 44, discussed above, that is formed to be interfitted with the threads 26 on the bottle neck 20, and (b) a second set of threads 62 that is formed to be interfitted with a threaded portion of the cap 16. Both of these connection elements are positioned internally on the collar 14, so as to prevent any contact between the connections elements and a person's lips or mouth. Although both of the connection elements on the collar 14 are shown in the illustrated embodiment as threaded portions, the collar 14 can be connected to the bottle 12 and the cap 16 in any suitable manner. Optionally, the collar 14 can be connected to the bottle 12 and the cap 16 in different manners. For example, the collar may be press-fitted or snap-fitted on the bottle, and the cap 16 may be threaded to correspond to a threaded portion on the collar 14, or vice versa.
In the illustrated embodiment, the threads 62 are positioned at or near the upper portion of the collar 14, near the dispensing opening 50 but on the inner surface 30 of the collar 14, so as to avoid contact with a person's mouth when drinking. In the illustrated embodiment, the threaded portion on the cap 16 is formed as a threaded insert 32, which can be dropped or otherwise inserted into the dispensing opening 50, such that threads 64 on the threaded insert 32 can easily engage the threads 62 on the collar 14.
To prevent the cap 16 from being twisted or pressed too far onto the collar 14, in the illustrated embodiment, the flange 58 on the inner surface 30 of the collar 14 is positioned between the first and second sets of threads 44 and 62. Thus, when a bottom edge or end of the threaded insert 32 engages the flange 58, the flange will provide a resistance force to resist further twisting or pressing of the cap 16 on or about the collar 14. The cap 16 can therefore be twisted about the collar 14 in a clockwise direction or pressed directly onto the collar 14 until it stops, at which point the cap 16 is sealed to the collar 14.
The connection between the cap 16 and the collar 14 provides a positive seal over the dispensing opening 50 to prevent the leakage of fluid from the bottle and to prevent dust, dirt and the like from entering the bottle. The cap 16 may be sealed to the collar 14 at any point of contact between the cap 16 and the collar 14, for example, at the flange 58 and at a point above the threaded connection. To further ensure a sealed connection between the cap 16 and the collar 14, a seal or O-ring may be provided at either of these locations or at another point of contact between the cap 16 and the collar 14 (not shown).
In the illustrated embodiment, the cap includes an outer sidewall 66 for covering the collar 14. The outer sidewall 66 generally follows the contour of the bottle 12 and has a length that corresponds to that of the sidewall portion 48 of the collar 14. Optionally, and as shown in
The collar 14 and the removable cap 16 may each be made from any suitable material using any appropriate manufacturing process, such as injection molding. Because of the details with respect to the threading on both the cap 16 and collar 14, the molding process may involve multiple moving cores, specifically, two moving cores for the cap and three for the collar. In such a configuration, different parts of the mold can be removed sequentially, to allow the threaded portions to be removed from the mold surfaces without stripping the threads.
When formed by a molding process, the collar 14 and cap 16 may be formed from a plastic, such as high density polyethylene (HDPE), which may be a natural or solid color, or may be translucent. Optionally, the collar 14 and cap 16 may be formed from a heavier, higher quality material than the bottle 12, to increase the structural rigidity and improve the texture of these portions of the drinking bottle assembly 10. Because both the cap 16 and the collar 14 may be repeatedly connected to and removed from the bottle 12 during use, these elements may require more structural rigidity than the bottle 12. Accordingly, the collar 14 and cap 16 may optionally have a wall thickness in the range of approximately 1.0 mm.
The above description is that of the current embodiment of the invention. Various alterations and changes can be made without departing from the spirit and broader aspects of the invention as defined in the appended claims, which are to be interpreted in accordance with the principles of patent law including the doctrine of equivalents. Any reference to claim elements in the singular, for example, using the articles “a,” “an,” “the” or “said,” is not to be construed as limiting the element to the singular.
