Oval-shaped tube closure

Information

  • Patent Grant
  • 6631833
  • Patent Number
    6,631,833
  • Date Filed
    Friday, February 16, 2001
    23 years ago
  • Date Issued
    Tuesday, October 14, 2003
    21 years ago
Abstract
A dispensing closure is provided for attachment to the discharge port of a standard circular-headed tube. The closure comprises a skirt with a circular cross-sectional shape at its base that merges gradually to an oval-shaped face at its top. When the closure is attached to a standard circular-headed tube, with the long axis of the oval face oriented substantially parallel to the straight crimped edge of the filled tube, the combination of closure and tube appears to the ordinary observer to have a continuously oval cross-sectional shape throughout the length of the combination. The dispensing closure can be manufactured using typical injection-molding techniques, and may be adapted for use with dispensing mechanisms and attachment means known in the personal care products industry.
Description




BACKGROUND OF THE INVENTION




This invention relates to closures for containers, more particularly to closures that produce unique visual effects when combined with standard containers for personal care products.




A variety of dispensing packages and containers have been developed for personal care products such as shampoos, lotions, etc., as well as for other materials. It is highly desirable that these dispensing containers be not only functional, but also have an aesthetic and distinctive appearance to attract the purchaser's eye and identify the product.




Numerous examples of containers and dispensing closures that are both functional and visually distinctive are found in the prior art. The examples presented herein are representative of such articles, and are relevant to the disclosure of the present invention.




U.S. Design Pat. No. 374,625 to Flurer et al. discloses a combined container and cap for a hair care product. The bottle has a distinctive narrow oval shape that is continued by the pushbutton-style cap. The cap has a constant oval cross-section from the base of its skirt to its top, and a ring-shaped ornament around its base where the base meets the shoulder of the bottle. U.S. Design Pat. No. 426,158, also to Flurer et al., presents a more detailed disclosure of the cap.




U.S. Design Pat. No. 405,693 to Bretz et al. presents a bottle closure with a circular skirt and a non-circular top. The top appears as an oval when viewed from above. The cross-sectional shape changes suddenly from round to oval rather than gradually merging from one shape to the other.




U.S. Pat. No. 5,392,968 to Dark discloses a closure in FIGS. 12 and 13 in which the skirt has a circular cross-section and the top has a non-circular cross-section that is approximately oval in shape. Again, the closure does not exhibit a smooth transition from the base of the skirt to the top portion thereof.




U.S. Design Pat No. 363,222 to Lay discloses a dispensing container with a pushbutton dispensing mechanism where the skirt and top each have oval faces of slightly different shape. As a result, when viewed from the side, the closure has a vertical wall adjacent to the outlet port of the dispenser and a wall that is sloped slightly off vertical adjacent to the button end of the dispenser.




U.S. Design Pat. No. 316,221 to Dombroski discloses a design for an oval collapsible tube and a cap therefor. The sleeve of the tube has an oval head and, therefore, an oval cross-section throughout its length, and the cap has an oval face of substantially the same shape and cross-sectional area as the oval head of the tube.




U.S. Pat. No. 4,013,200 to Tripp presents a dispensing closure having a circular skirt and an oval top. The cross-section expands continuously from the skirt to the top so that the cross-sectional area of the oval top is substantially larger than the area described by the skirt.




A variety of dispensing mechanisms are also known in the art. A typical pushbutton-type dispensing closure is disclosed in U.S. Pat. No. 4,776,501 to Ostrowsky. In general, a pushbutton-type closure is characterized by an actuator that rotates about a pair of pivots secured within the body of the closure. An effluent duct within the actuator is fluidly connected to the interior of the container when the closure is in its open position. When the actuator is in its closed position, the effluent duct is concealed.




U.S. Pat. No. 5,123,561 to Gross discloses a flip-top closure similar to a generic closure used in the personal care products industry. The body of the closure comprises a checkboard that is perforated to provide a fluid connection between the interior of the container and the outside of the closure. A lid is connected to the skirt of the closure by means of a hinge, and a plug on the underside of the lid is positioned to block the opening when the lid is in its closed position.




U.S. Pat. No. 4,742,928 to Braun discloses a variation of the flip-top cap where the lid is attached to the closure body by means of a pivot mechanism.




Various means of attaching a closure to a receptacle are also known in the art. Two widely used means are the threaded screw-on connection, exemplified in U.S. Pat. No. 4,742,928 and the snap-on fitting, exemplified in U.S. Pat. No. 5,123,561, which locks the closure in position on the receptacle. A variation of the snap-on fitting, the bayonet fitting, also locks the closure onto the receptacle but is easier to remove and replace.




It is desirable to be able to manufacture a dispensing tube which has the appearance of having an oval head. Dispensing tubes typically are made with circular heads and circular closures, thereby producing packages with a generally circular appearance. In comparison, dispensing tubes with oval heads and oval closures are relatively unusual and therefore visually distinctive.




The vast majority of plastic tube manufacturing machines in use today are designed and tooled to make tubes with circular heads, rather than oval heads. The standard process of making a plastic tube involves the following steps: (1) extruding a plastic sleeve; (2) compression-molding a circular tube head onto the plastic sleeve; (3) decorating the tube; and (4) attaching a closure to the tube. Subsequently, the tube is filled with product through its open end, which is then crimped to seal the tube.




The methods of making and using a tube with an oval head are more complex and costly than the method used with circular heads. For example, the tube may be made directly using the same steps as are used with a circular head, except that an oval head is compression-molded onto the tube instead of the circular head. While feasible, this approach requires the purchase of an expensive oval-heading tool, with a cost of about $100,000 per diameter, and the purchase of specialized oval decorating mandrels instead of the more common circular mandrels. An existing production line must be changed over from round to oval in its entirety to change the type of tube being made. In another approach, the sleeve is decorated before the oval tube head is compression-molded onto the sleeve. Again, this production variation requires equipment modifications and the purchase of special tooling, and requires the production line to be changed from round to oval. There is also a risk of damaging the decoration on the sleeve due to the elevated temperatures and compression force involved in the compression-molding process. A third, and less desirable approach, is to manufacture a tube with a circular head following the process discussed herein, cut off the circular head, and weld on an oval tube head in a secondary process. This method suffers from the requirement for a secondary manufacturing step as well as from wastage of materials.




It is desirable to develop a dispensing closure that, when combined with a standard tube having a circular head, creates the distinctive visual impression of a dispensing tube having an oval head and closure. This would allow the use of commonly available equipment for tube decorating and compression-molding, and the much less complex and relatively inexpensive manufacturing process used to make circular-headed tubes. It would also be advantageous if such a closure could be adapted for use with the various dispensing mechanisms and attachment fittings that are currently known throughout the packaging industry.




SUMMARY OF THE INVENTION




A dispensing closure is provided for a container for flowable material. The shape of the closure is defined by an external skirt which has a circular cross-sectional shape at its base that merges gradually to an oval-shaped face at the top of the closure. When combined with a standard circular-headed dispensing tube, the combination of this “round-to-oval” closure with the circular-headed tube appears to an ordinary observer to have oval-shaped cross sections throughout its length, rather than appearing to be a circular closure mounted to a circular tube. The use of the disclosed closure in combination with the standard circular-headed tube allows fabrication of visually distinctive packages for creams, lotions or other items typically packaged in dispensing tubes without the costs and wastage associated with fabricating oval-shaped tubes and closures.




In a preferred embodiment, the closure comprises a skirt forming the outer surface of the closure, where the skirt has a circular cross-sectional shape at its lower edge and forms an oval-shaped face at its top. The shapes of successive cross-sections of the skirt vary continuously along the length of the closure from the circular cross-sectional shape of the lower edge of the skirt to the oval-shaped face at the upper edge of the skirt. The closure further comprises a body member having means for attachment to a discharge port on the tube and a dispensing assembly interfitted with the closure.




The closure may be adapted for use with a number of different dispensing mechanisms, particularly, the push-button type and flip-top type of dispensing mechanism, or other dispensing mechanisms used in the personal care packaging industry. The means for attaching the closure body to the receptacle may be of a threaded screw-on type, a snap-on or bayonet type, or other means for attaching closures to containers that are known in the art.




The closure can be manufactured by well-known injection-molding techniques, preferably using polyolefin material, most preferably, polypropylene or a high-density polyethylene.




In another preferred embodiment, the “round-to-oval” closure is combined with a standard circular-headed tube. The tube comprises a cylindrical sleeve having an open end and a closed end, said sleeve typically having the form of a right circular cylinder. The closed end of the tube is formed by a circular head molded onto the circular sleeve. The circular head also has a discharge port molded onto it. The “round-to-oval”, closure is attached to the discharge port of the tube so that the long axis of the oval face is substantially parallel to the straight edge formed by the crimped end of the tube. This combination of closure and tube appears to the ordinary observer to have a continuous cross-sectional oval shape throughout its length. This creates a distinctive visual impression of an oval tube at a substantially lower cost than would be incurred to manufacture an oval-headed tube and corresponding oval cap.




The impression of an oval-headed tube can be enhanced by decorating the partially flattened faces that are formed when the open end of the tube is crimped.











BRIEF DESCRIPTION OF THE DRAWINGS





FIG. 1A

is a cross-sectional view of a type of dispensing closure known in the art in its sloped open position.





FIG. 1B

is a cross-sectional view of dispensing closure of

FIG. 1A

in its level closed position.





FIG. 2

is a cross-sectional view of a type of dispensing closure known in the art further illustrating a snap-on type attachment means.





FIG. 3

is a cross-sectional view of a variation of the dispensing closure of

FIG. 2

further illustrating a screw-on type attachment means.





FIG. 4A

is an exploded view of a preferred embodiment of the present invention.





FIG. 4B

is an exploded view of a preferred embodiment of the present invention.





FIG. 5A

is a top view of a preferred embodiment of the present invention.





FIG. 5B

is a bottom view of a preferred embodiment of the present invention.





FIG. 5C

is a rear view of a preferred embodiment of the present invention.





FIG. 5D

is a side view of a preferred embodiment of the present invention.





FIG. 6

is a left cross-sectional view of the embodiment of

FIGS. 5A-5D

.





FIG. 7

is a cutaway top view of the embodiment of

FIGS. 5A-5D

.





FIG. 8

is a fragmentary side view of a tubular receptacle known in the art.





FIG. 9

is an end-on view of the preferred embodiment of FIG.


4


A.





FIG. 10

is a side-by-side presentation of the bottom view of

FIG. 5B

with an end view of a tubular receptacle known in the art.











DETAILED DESCRIPTION OF THE INVENTION





FIGS. 4A

,


4


B present exploded views of the preferred embodiment of the closure


50


in combination with a standard circular-headed tubular receptacle


80


. In the embodiment of

FIG. 4A

, pushbutton-type closure


50


has a skirt


53


with a circular base


54


and an oval face


52


at its top. Actuator


51


is interfitted within oval face


52


. Recess


55


is molded into skirt


53


to allow the adjacent end of actuator


51


to be conveniently depressed by the tip of a user's finger.




Closure


50


attaches to tubular receptacle


80


by means of a snap-on fitting


60


. Tubular receptacle


80


comprises sleeve


82


, circular head


81


and neck


84


. Flange


85


is an annular structure protruding from the exterior of neck


84


. Ribs


88




a


,


88




b


are provided on head


81


and serve to orient closure


50


with respect to tubular receptacle


80


and prevent rotation of closure


50


after it is secured to neck


84


of tubular receptacle


80


. Head


81


, neck


84


, flange


85


and ribs


88




a


,


88




b


are formed as a single unit by compression-molding methods widely known in the art. Sleeve


82


is formed as a right circular cylinder in a separate process, then head


81


is compression-molded onto sleeve


82


. Typically, a closure, such as closure


50


, is then fitted and secured to tubular receptacle


80


. Tubular receptacle


80


is filled with product in a separate process and sealed by forming crimp


87


at open end


83


. Edge


86


of crimp


87


defines a segment of line


44


.





FIG. 4B

shows the combination of tubular receptacle


80


and closure


50


prior to filling tubular receptacle


80


and crimping sleeve


82


. The structures visible within closure


50


are presented in more detail in

FIG. 5B

, discussed herein.




The closure and tube of the present invention may be manufactured using standard, low-cost techniques that are widely employed throughout the packaging industry. Preferably, closure


50


is formed by injection-molding a plastic material. More preferably, the plastic material is a polyolefin, with polypropylene and high-density polyethylene being the most preferred materials. For embodiments in which a multiplicity of pieces are comprised in the closure, the individual pieces are injection-molded separately and assembled to form the closure. Preferably, the component parts of tubular receptacle


80


are also made of plastic, more preferably vinyl or polyolefin, with polypropylene and high-density polyethylene being the most preferred polyolefin materials.





FIGS. 5A-5D

show four views of the preferred embodiment of closure


50


. Preferably, circular base


54


of skirt


53


has the same diameter as sleeve


82


so that when closure


50


is seated on tubular receptacle


80


, the exterior of skirt


53


and the exterior of sleeve


82


give the impression of having a continuous surface. Oval face


52


has a long axis


41


and a short axis


42


. Preferably, the length of oval face


52


along long axis


41


is substantially the same, but no greater than, the diameter


43


of circular base


54


of skirt


53


. This creates the impression that skirt


53


, when viewed from front or rear (FIG.


5


C), forms substantially vertical side walls


56




a


,


56




b


. More preferably, the slopes of side walls


56




a


,


56




b


deviate no less than about 1% from vertical, and no more than about 2% from vertical. The length of oval face


52


along its short axis


42


is substantially smaller than its length along long axis


41


. Actuator


51


is circular in shape and is embedded within oval face


52


. Outer surface


51




a


of actuator


51


is level with oval face


52


as illustrated in rear view FIG.


5


C and side view FIG.


5


D. The short dimension of oval face


52


relative to diameter


43


of circular base


54


causes side walls


57




a


,


57




b


to slope inward from the vertical as illustrated in side view FIG.


5


D. Recess


55


molded into skirt


53


exposes the rear of actuator


51


and allows actuator


51


to be conveniently depressed from the level closed to the sloped open position, with actuator


51


pivoting around axis of rotation


45


, which is defined by pivots


72


. Level closed and sloped open positions of an actuator are exemplified in

FIGS. 1A

,


1


B.




Closure


50


is open at base


54


to allow access to attachment means


60


to secure closure


50


to tubular receptacle


80


. Attachment means


60


comprises body member


61


, and flanges


62


and ridges


63


which protrude from the interior wall of body member


61


. Body member


61


is an annular structure attached to skirt


53


and the underside of oval face


52


. Body member


61


, flanges


62


, and ridges


63


are adapted to cooperate with flange


85


of tubular receptacle


80


so that closure


50


may be attached to tubular receptacle


80


by positioning body member


61


over neck


84


and pushing closure


50


toward tubular receptacle


80


so that flanges


62


slide over flange


85


, with the results that flanges


62


and ridges


63


fit snugly against flange


85


and that closure


50


may not be removed from tubular receptacle


80


absent application of considerably greater force than that required to slide flanges


62


over flange


85


.




Ribs


66


,


68


are molded integrally with skirt


53


and body member


61


and provide structural support for skirt


53


. Positioning rib


68


serves the additional purpose of enabling closure


50


to be oriented with respect to tubular receptacle


80


through cooperation of positioning rib


68


with ribs


88




a


,


88




b


of tubular receptacle


80


.

FIG. 5B

further illustrates the location of checkboard


76


, pivots


72


and pipe


77


which are integral to a preferred pushbutton dispensing mechanism discussed herein. Actuator


51


pivots around axis of rotation


45


which, in the illustrated embodiment, is located within pivots


72


. Axis of rotation


45


is substantially parallel to long axis


41


of oval-shaped face


52


.





FIG. 6

presents a cross-sectional view of a preferred combination of closure


50


and tubular receptacle


80


wherein closure


50


is attached to tubular receptacle


80


. The cross-section of

FIG. 6

is taken between rib


88




a


and rib


88




b


of tubular receptacle


80


. In a preferred embodiment, body member


61


further comprises an annular structure


65


which serves to plug opening


89


of tubular receptacle


80


.




The limits of the open sloped and level closed positions of actuator


51


are set by limiting means


511




a


,


511




b


and


512




a


,


512




b


, respectively. Actuator


51


pivots to its maximum sloped open position at which the rear lower edge


511




a


of actuator


51


contacts the base of checkboard


76


, referenced as


511




b


. Movement of actuator


51


to its level closed position is limited by contact of portion


512




a


of inner surface


78


of actuator


51


against upper end


512




b


of pipe


77


.




Cutaway top view

FIG. 7

illustrates the location of ribs


88




a


,


88




b


and positioning rib


68


when closure


50


has been installed upon tubular receptacle


80


. Positioning rib


68


extends sufficiently beyond body member


61


to contact ribs


88




a


,


88




b


, when closure


50


is attached to tubular receptacle


80


, while ribs


66


end at a level substantially above ribs


88




a


,


88




b


, so as to avoid contact between ribs


66


and ribs


88




a


,


88




b


. Rib


88




a


extends substantially further above head


81


than rib


88




b


as seen in FIG.


8


. To attach closure


50


to tubular receptacle


80


, closure


50


is placed with body member


61


over neck


84


above flange


85


. Closure


50


is rotated clockwise, as seen from the orientation of the top view of closure


50


, until positioning rib


68


contacts rib


88




a


. Closure


50


is then pushed firmly toward tubular receptacle


80


until flanges


62


pass over flange


85


and snap into place, with a result that positioning rib


68


fits snugly between rib


88




a


and rib


88




b


. The snug fit locks closure


50


in position on tubular receptacle


80


with flanges


62


secured between flange


85


and tube head


81


. Most preferably, positioning rib


68


and ribs


88




a


,


88




b


are positioned so that when open end


83


of tubular receptacle


80


is crimped, long axis


41


of oval face


52


is substantially parallel with line


44


(FIG.


9


).




As will be obvious to one skilled in the art, the “round-to-oval” skirt


53


is not limited to use with the pushbutton-type dispensing mechanism of the preferred embodiment. Various dispensing mechanisms known in the art may be adapted for use in the present invention.

FIGS. 1A

,


1


B present a typical pushbutton-type dispensing closure


10


known in the art. The pushbutton-type closure


10


is characterized by actuator


11


having a pair of pivots


12


that are received and secured by securing means


13


within the body of the closure


10


, so that actuator


11


pivots around an axis of rotation (not shown) defined by pivots


12


. Movement of actuator


11


to its maximum open sloped position and its level closed position is limited by limiting means


111




a


,


111




b


and


112




a


,


112




b


, respectively. Actuator


11


pivots to its maximum sloped open position at which rear corner


112




a


of actuator


11


contacts the body of the closure at surface


112




b


. Movement of actuator


11


past its level closed position is limited by contact of section


111




a


of actuator


11


with structure


111




b


. Typically, there is an effluent duct


15


within actuator


11


which is exposed when actuator


11


is in a sloping open position (

FIG. 1A

) and covered when actuator


11


is in a level closed position (FIG.


1


B). Checkboard


16


is present within the body of closure


10


. Pipe


17


penetrates checkboard


16


and provides a fluid connection between effluent duct


15


and the interior of a container to which closure


10


is attached. Protruding plug


18


on inner surface


19


of actuator


11


is in position to block pipe


17


when actuator


11


is in its level closed position (FIG.


1


B).





FIG. 2

illustrates a typical flip-top closure


20


in cross-sectional view, attached to discharge port


4


of a section of receptacle


2


. Checkboard


26


within the body of closure


20


faces the interior of receptacle


2


. Checkboard


26


defines opening


25


which serves the same purpose as effluent duct


15


shown in

FIG. 1A

,


1


B. Lid


21


is connected to skirt


24


of closure


20


by means of a web or thin-wall hinge


22


. Plug


28


is positioned on the inner surface


29


of lid


21


so that it will seal opening


27


when lid


21


is in its level closed position. In this particular illustration, body member


25


of closure


20


is adapted to fit snugly within neck


4


of container


2


, thereby acting as a plug. Closure


20


is secured to container


2


with a snap-on type fitting


3


,


23


. Protruding flange


3


, here shown as a ring continuous with the outer surface of the container


2


, is molded along the perimeter of container


2


. Flange


23


is molded onto closure


11


along the interior bottom edge of skirt


23


. Both flange


23


within skirt


24


and ridge


3


on container


2


are adapted so that, when closure


20


is placed over neck


4


of container


2


and pressed toward container


2


, flange


23


within skirt


24


slides over ring


3


molded onto container


2


. Closure


20


is thereby secured to container


2


so that closure


20


can only be removed by applying a substantially greater force than was needed to secure it to container


2


.





FIG. 10

illustrates the components of a bayonet fitting, which is a variation of the snap-on type fitting. Flanges


105


extend from opposing sides of neck


104


, in contrast to flange


85


of

FIGS. 4A

,


4


B, which is continuous around the circumference of neck


84


. Axes


141


and


142


are defined as being parallel to axes


41


and


42


, respectively, when closure


50


is positioned on tubular receptacle


100


with positioning rib


68


adjacent to rib


108


. Cylinder member


61


and flanges


62


are adapted to cooperate with neck


104


and flanges


105


to releasably attach closure


50


to tubular receptacle


100


. To releasably attach closure


50


to tubular receptacle


100


, cylindrical member


61


is positioned over neck


104


so that axis


42


is substantially parallel to axis


141


, i.e., closure


50


is displaced by 90° from its locked position. Closure


50


is then pushed toward tubular receptacle


100


until face


54


contacts tubular receptacle


100


. Closure


50


and tubular receptacle


100


, along with their components referenced on

FIG. 10

, are adapted so that flanges


62


will not contact flanges


105


while closure


50


is displaced by 90° from its locked position. Tubular receptacle


100


is shown as having three ribs,


108




a


,


108




b


. Rib


108




a


projects substantially further away from tubular receptacle


100


than either of ribs


108




b


. Closure


50


is rotated around neck


104


until positioning rib


68


slides over the nearest rib


108




b


to contact rib


108




a


. The snug fit of positioning rib


68


between ribs


108




a


and


108




b


locks closure


50


in position with flanges


62


secured between flanges


105


and collar


107


. Closure


50


is removed from tubular receptacle


100


by rotating closure


50


around neck


104


, causing positioning rib


68


to slide over rib


108




b


, to displace closure


50


by 90° from its locked position. Closure


50


is then conveniently removed from neck


104


without contacting flanges


62


against flanges


105


.





FIG. 3

presents a variation of the flip-top closure of

FIG. 2

attached to discharge port


6


on a section of receptacle


5


. Lid


31


is attached to the body of closure


30


by means of a pair of pivots


32


integral to lid


31


and a means


33


of receiving and securing pivots


32


provided in the body of closure


30


.

FIG. 3

also illustrates a screw-on type means of attaching closure


30


to container


5


. The screw-on type means comprises a threaded cylindrical member


37


within the body of closure


30


that is complementary to a threaded portion


7


of container


5


. Closure


30


is attached to container


5


by positioning closure


30


over threaded portion


7


of container


5


so that threads


38


of closure


30


engage threads


8


of threaded portion


7


of container


5


, and rotating closure


30


until it is seated on container


5


.




It would be obvious to one skilled in the art that a threaded body member or bayonet-type attachment means could readily be substituted for the snap-on attachment means


60


of closure


50


without substantially modifying the injection-molding or assembly methods required for the present invention. Substitution of a threaded body member would also require that ribs


88




a


,


88




b


and positioning rib


68


be modified to allow closure


50


to be rotated into contact with head


81


.




In a preferred embodiment of the present invention, the finished and filled tubular receptacle


80


is crimped at its open end


83


so that line


44


, defined by edge


86


of crimp


87


, is substantially parallel to long axis


42


of oval face


52


. As is known throughout the art, and may be observed in

FIG. 4A

, the formation of the crimped end


87


deforms the circular shape of sleeve


82


, resulting in formation of two partially flattened faces


91




a


and


91




b


(not visible in

FIG. 4A

) on opposing sides of tubular receptacle


80


. The desired visual impression of a tubular receptacle and closure combination that is oval throughout its length may be enhanced by decorating one or both of the partially flattened faces


91




a


,


91




b


. Preferably, sleeve


82


is decorated before tubular receptacle


80


is filled and open end


83


is crimped. Therefore, decorations, most preferably, are applied in position on areas of sleeve


82


that will form partially flattened surfaces


91




a


,


91




b


when open end


83


is sealed by forming crimp


87


. Decorations may be applied directly to the exterior of sleeve


82


or may be printed on labels which are then affixed to faces


91




a


,


91




b


of tubular receptacle


80


. The actual methods used to decorate tubular packages are well known throughout the personal care packaging industry and do not form a part of this invention.




Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims.



Claims
  • 1. A dispensing closure for attachment to the discharge port of a receptacle comprisinga skirt forming an outer surface of said closure and comprising a lower edge and an upper edge, said lower edge of said skirt forming a closure base defining an opening of said closure, said skirt having a circular cross-sectional shape at said closure base, and said upper edge of said skirt forming an oval-shaped face at the top of said closure wherein the shapes of successive cross-sections of said skirt vary continuously along the length of said closure from said circular-cross-sectional shape at said lower edge of said skirt to said oval-shaped face at said upper edge of said skirt; a body member disposed within said skirt and comprising attachment means for attachment to said discharge port so that an interior face of said body member is exposed to the interior of said receptacle; and a dispensing mechanism interfitted within said body member.
  • 2. The dispensing closure of claim 1 wherein said oval-shaped face has a long axis and a short axis and said circular cross-sectional shape of said closure base has a diameter, and said long axis is substantially the same length as said diameter.
  • 3. The dispensing closure of claim 1 wherein said dispensing mechanism is of a pushbutton type comprisingan actuator having an inner face and an outer face, said actuator being pivotally mounted to and interfitted within said body member so as to be pivotable between a level closed position and a sloped open position, said outer face of said actuator forming at least a portion of said oval-shaped face when said actuator is in said level closed position; a checkboard within said body member mounted below said actuator, said checkboard comprising a pipe that penetrates said checkboard, said pipe having an upper port and a lower port; said actuator comprising a protruding plug on said inner face of said actuator, said plug being in position to block said upper port of said pipe when said actuator is in said level closed position; and an effluent duct within said actuator, said effluent duct having a forward-opening port at one end of said actuator and a rear port at an opposing end of said actuator fluidly connected with said upper port of said pipe; said forward-opening port of said effluent duct being exposed when said actuator is in said sloping open position and covered when said actuator is in said level closed position.
  • 4. The dispensing closure of claim 1 wherein said dispensing mechanism is of an articulated flip-top type comprisinga lid comprising an outer surface and an inner surface, said lid being pivotally mounted on said body member so as to be pivotable between a level closed position and an open position, said outer surface of said lid forming at least a portion of said oval-shaped face when said lid is in said level closed position; and a checkboard integral with said body member, said checkboard defining an opening through said checkboard; said lid comprising a protruding plug, said protruding plug being in position on said inner surface to block said opening when said pivot lid is in said level closed position.
  • 5. The dispensing closure of claim 3 whereinsaid actuator comprises pivot means integral to said actuator, said body member comprises receiving means for receiving said pivot means and permitting said pivot means to pivot around an axis of rotation, and a limiting means adapted to limit said pivoting of said actuator, and said oval-shaped face has a long axis and a short axis, said axis of rotation being substantially parallel to said long axis of said oval-shaped face.
  • 6. The dispensing closure of claim 4 whereinsaid lid comprises pivot means integral to said lid, said body member comprises receiving means for receiving said pivot means and permitting said lid to pivot around an axis of rotation, and said oval-shaped face has a long axis and a short axis, said axis of rotation being substantially parallel to said long axis of said oval-shaped face.
  • 7. The dispensing closure of claim 1 wherein said dispensing mechanism is of a hinged flip-top type comprisinga lid comprising an outer surface and an inner surface, said lid being mounted on said body member so as to be pivotable between a level closed position and an open position, the outer surface of said lid forming at least a portion of said oval face when said lid is in said level closed position; and a checkboard integral with said body member, said checkboard defining an opening through said body member; said lid comprising a protruding plug, said protruding plug being in position on said inner surface to block said opening when said lid is in said level closed position; and said oval-shaped face having a long axis and a short axis, wherein said lid is connected to said dispensing closure by a hinging means adapted to allow said lid to pivot around an axis of rotation and said axis of rotation is substantially parallel to said long axis.
  • 8. The dispensing closure of claim 1 wherein said attachment means is of a screw-on type and wherein said discharge port comprises a threaded cylindrical wall, and said body member comprises a threaded cylindrical wall complementary to said threaded cylindrical wall of said discharge port whereby said dispensing closure may be securely attached to said discharge port by positioning said threaded cylindrical wall of said body member over said threaded cylindrical wall of said discharge port and rotating said closure so as to engage said threaded cylindrical walls with each other until said dispensing closure is securely attached to said discharge port.
  • 9. The dispensing closure of claim 1 wherein said discharge port of said receptacle comprises at least one flange thereon, and wherein said attachment means comprises attachment means within said body member comprising a cylindrical portion which comprises securing means adapted to secure said body member to said receptacle through cooperation with said at least one flange on said receptacle.
  • 10. The dispensing closure of claim 9 wherein said discharge port comprises a neck integrally formed with said receptacle and said at least one flange is an annular structure co-extensive with an outer surface of said neck, said securing means co-operating with said at least one flange whereby said body member may be secured to said receptacle by placing said body member over said neck and forcibly pressing said dispensing closure toward said receptacle thereby causing said attachment means to slide over said at least one flange, whereby said body member cannot be detached from said neck absent application of a substantially greater force than was applied to cause said attachment means to slide over said flange.
  • 11. The dispensing closure of claim 9 wherein said discharge port comprises a neck integrally formed with said receptacle and said at least one flange comprises at least two flanges protruding from an outer surface of said neck, said securing means cooperating with said at least two flanges whereby said body member may be removably secured to said receptacle by placing said body member onto said neck in a position whereby said attachment means do not contact said at least two flanges, and rotating said dispensing closure around said neck to a position whereby said attachment means is positioned between at least one of said at least two flanges and receptacle.
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Number Name Date Kind
4013200 Tripp Mar 1977 A
4742928 Braun May 1988 A
4776501 Ostrowsky Oct 1988 A
D316221 Dombroski Apr 1991 S
5123561 Gross Jun 1992 A
5392968 Dark Feb 1995 A
D363222 Lay Oct 1995 S
5503309 Oder et al. Apr 1996 A
D374625 Flurer et al. Oct 1996 S
5632420 Lohrman et al. May 1997 A
D405693 Bretz et al. Feb 1999 S
5988425 Yehl et al. Nov 1999 A
D426158 Flurer et al. Jun 2000 S
6325252 Brozell et al. Dec 2001 B1