Information
-
Patent Grant
-
6631833
-
Patent Number
6,631,833
-
Date Filed
Friday, February 16, 200123 years ago
-
Date Issued
Tuesday, October 14, 200321 years ago
-
Inventors
-
Original Assignees
-
Examiners
Agents
- Lerner, David, Littenberg, Krumholz & Mentlik, LLP
-
CPC
-
US Classifications
Field of Search
US
- D09 449
- D09 450
- 222 531
- 222 536
- 222 556
-
International Classifications
-
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.
US Referenced Citations (14)