U.S. patent application number 11/966825 was filed with the patent office on 2009-02-19 for double structure cup.
Invention is credited to Jae-Woong RHEE.
Application Number | 20090045194 11/966825 |
Document ID | / |
Family ID | 40362164 |
Filed Date | 2009-02-19 |
United States Patent
Application |
20090045194 |
Kind Code |
A1 |
RHEE; Jae-Woong |
February 19, 2009 |
DOUBLE STRUCTURE CUP
Abstract
A double structure cup is disclosed, which is characterized in
that a plurality of polygonal male protrusions are protruded from a
bottom surface of the inner cup in a downward direction, and a
plurality of concave protrusions are formed and engaged with the
male protrusions on a bottom surface of the outer cup in an upward
direction, so that as the male protrusions are engaged with the
concave protrusions, the inner cup does not rotate along with the
lid when the lid is rotated for opening and closing.
Inventors: |
RHEE; Jae-Woong; (Seoul,
KR) |
Correspondence
Address: |
BIRCH STEWART KOLASCH & BIRCH
PO BOX 747
FALLS CHURCH
VA
22040-0747
US
|
Family ID: |
40362164 |
Appl. No.: |
11/966825 |
Filed: |
December 28, 2007 |
Current U.S.
Class: |
220/23.89 |
Current CPC
Class: |
B65D 81/3881 20130101;
B65D 81/3869 20130101 |
Class at
Publication: |
220/23.89 |
International
Class: |
B65D 21/02 20060101
B65D021/02 |
Foreign Application Data
Date |
Code |
Application Number |
Aug 18, 2007 |
KR |
10-2007-83081 |
Claims
1. In a double structure cup which includes an inner cup for
storing a certain stuff with its upper side being open, an outer
cup which is spaced apart from the inner cup while surrounding the
same and being engaged thereto, and a lid thread-engaged to an
upper side of the inner cup for opening and closing the same, a
double structure cup characterized in that a plurality of polygonal
male protrusions are protruded from a bottom surface of the inner
cup in a downward direction, and a plurality of concave protrusions
are formed and engaged with the male protrusions on a bottom
surface of the outer cup in an upward direction, so that as the
male protrusions are engaged with the concave protrusions, the
inner cup does not rotate along with the lid when the lid is
rotated for opening and closing.
2. The structure of claim 1, wherein said outer and inner cups are
engaged using a detachable engaging member.
3. The structure of either claim 1 or claim 2, wherein said lid is
engaged to the inner cup while being sealed using a packing.
4. The structure of either claim 1 or claim 2, wherein an outer
side surface of the male protrusion and an inner side surface of
the concave protrusion are gradually narrowed in a downward
direction and correspond to each other.
5. The structure of claim 1, wherein an upside down cup shape bent
part is downwardly bent in an outward direction from an upper side
of the inner cup, so that a space of which a lower side is open is
formed between the side surface of the inner cup and the bent part,
and an upper side of the outer cup is inserted into the space.
Description
TECHNICAL FIELD
[0001] The present invention relates to a double structure cup, and
in particular to a double structure cup in which an inner cup and
an outer cup are engaged in a polygonal protrusion engagement
structure. So, when a lid is opened or closed by rotating the lid,
an inner cup does not rotate along with the lid while keeping an
engaged state with the outer cup.
BACKGROUND ART
[0002] Generally, a cup is used as a receptacle for storing
beverage or liquid food or being used when drinking something. It
has a certain thickness and an open upper side.
[0003] The above cup stores hot coffee, tea or milk or stores cold
beverage.
[0004] The conventional cup has problems that a user may be damaged
by hot heat as the heat of the stuff of the cup is transferred to
the hands of a user. The user may drop a hot cup for thereby
causing a burn.
[0005] In the conventional cup, an exclusive mold is made for
forming various patterns or designs on an outer surface of the cup.
A cutting process may be performed for forming a certain
advertisement character. Once a certain pattern or design is formed
on an outer surface of the cup, it is impossible to change the
same. It costs too much for manufacturing a mold and forming a
pattern and design.
[0006] In order to overcome the above problems, an adiabatic layer
is formed between an inner cup and an outer cup by using air.
Namely, a double structure cup is developed for blocking a heat
transfer from the hot stuffs of the cup to the hands of a user.
[0007] In addition, the outer cup is transparent, and a decoration
sheet or advertisement sheet (insertion sheet) with various
patterns and designs is inserted between the inner and outer cups
for thereby manufacturing various types of products. In the above
double structure cup, it is possible to change the insertion
sheet.
[0008] In the conventional double structure cup, as the inner and
outer cups rotate, the double structure cup is assembled or
disassembled. An insertion sheet is inputted into a space between
the inner cup and a transparent outer cup, and the upper side of
the inner cup is opened and closed through a lid.
[0009] When opening or closing the conventional double structure
cup by rotating the lid, the inner cup is not fixed to the outer
cup, namely, it rotates idle, so that opening and closing the lid
are not easy. In order to overcome the above problems, the inner
and outer cups are assembled while being not well rotated. In this
case, exchanging the insertion sheet is not easy, and assembling
and disassembling works are not easy.
DISCLOSURE OF THE INVENTION
[0010] Accordingly, it is an object of the present invention to
provide a double structure cup in which an inner cup and an outer
cup are engaged in a polygonal protrusion engagement method, and
when a lid thread-engaged to an inner cup is rotated to open or
close, the inner cup does not rotate along with the lid while
keeping engaged to the outer cup, so that it is easy to open and
close the lid, and an advertisement insertion sheet may be inserted
into a space between the inner and outer cups.
[0011] To achieve the above objects, in a double structure cup
which includes an inner cup for storing a certain stuff with its
upper side being open, an outer cup which is spaced apart from the
inner cup while surrounding the same and being engaged thereto, and
a lid thread-engaged to an upper side of the inner cup for opening
and closing the same, there is provided a double structure cup
characterized in that a plurality of polygonal male protrusions are
protruded from a bottom surface of the inner cup in a downward
direction, and a plurality of concave protrusions are formed and
engaged with the male protrusions on a bottom surface of the outer
cup in an upward direction, so that as the male protrusions are
engaged with the concave protrusions, the inner cup does not rotate
along with the lid when the lid is rotated for opening and
closing.
BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The present invention will become better understood with
reference to the accompanying drawings which are given only by way
of illustration and thus are not limitative of the present
invention, wherein;
[0013] FIG. 1 is an assembled cross sectional view of a double
structure cup according to an embodiment of the present
invention;
[0014] FIGS. 2A and 2B are front cross sectional and bottom views
of an inner cup of FIG. 1;
[0015] FIGS. 3A and 3B are front cross sectional and bottom views
of an outer cup of FIG. 1;
[0016] FIG. 4 is a front view of a lid of FIG. 1; and
[0017] FIG. 5 is an assembled cross sectional view of a double
structure cup according to another embodiment of the present
invention.
MODES FOR CARRYING OUT THE INVENTION
[0018] The construction and operation of the present invention will
be described with reference to the accompanying drawings.
[0019] FIG. 1 is an assembled cross sectional view of a double
structure cup according to an embodiment of the present invention,
FIGS. 2A and 2B are front cross sectional and bottom views of an
inner cup of FIG. 1, FIGS. 3A and 3B are front cross sectional and
bottom views of an outer cup of FIG. 1, and FIG. 4 is a front view
of a lid of FIG. 1.
[0020] As shown therein, the double structure cup according to the
present invention comprises an inner cup 100, an outer cup 200, a
lid 200 and an insertion sheet 400.
[0021] The inner cup 100 is cylindrical and has a side surface 110
and a bottom surface 120 with an upper side of the same being open
for storing a certain stuff. The side surface 110 is gradually
narrowed in a downward direction.
[0022] The inner cup 100 stores a certain stuff such as hot coffee,
tea, milk or something or stores a certain stuff such as cold
beverage.
[0023] The side surface 110 of the inner cup is provided with a
female thread part 111 formed along an inner circumferential
surface and thread-engaged with the lid 300, a step part 112
inwardly formed at the upper end of the same, and a bent part 113
formed on the upper side of the same and bent in an upside down cup
shape in an outward direction.
[0024] A certain space 114 is formed between the side surface 110
of the inner cup and the bent part 113 with its lower end being
open. The upper end of the side surface 210 of the outer cup is
inserted into the space 114.
[0025] A male protrusion 121 is protruded from a lower side in the
bottom surface 120 of the inner cup in a polygonal shape. The male
protrusion 121 is formed of an outer protrusion 121a and an inner
protrusion 121b, and a contraction prevention groove 122 is formed
between the outer and inner protrusions 121a and 121b for
preventing contraction during an ejection molding work. An engaging
grooves 123 is formed at the center of the inner protrusion 121b,
and the outer wall surface of the outer protrusion 121a is
gradually narrowed in a downward direction.
[0026] The inner cup 100 is preferably made of a synthetic resin,
stainless steel, china, glass, wooden or something. More
preferably, a ceramic hollow ball capable of preventing a heat
conduction is mixed with resin and is foam-molded. A material
combined with the ceramic hollow balls and paint is coated on the
surface of the inner cup for thereby obtaining an adiabatic
effect.
[0027] The outer cup 200 includes a side surface 210 and a bottom
surface 220 and is formed in a cylindrical shape with its upper
side being open. The side surface 210 is gradually narrowed in a
downward direction and surrounds the inner cup 100 while being
spaced by a certain space 510 from the inner cup 100. The upper
side of the outer cup 200 is inserted into the space 14 formed by
means of a bent part 113 of the inner cup 100.
[0028] A step part 211 is outwardly formed on an upper side of the
side surface 210 of the outer cup. When the upper side of the outer
cup 200 is inserted into the space 114 formed between the side
surface 110 of the inner cup and the bent part 113, the step part
211 supports the end of the bent part 113.
[0029] A polygonal concave protrusion 221 is formed on the upper
side of the bottom surface 220 of the outer cup, and a male
protrusion 121 is formed on the bottom surface 120 of the inner cup
for thereby being engaged with the concave protrusion 221.
[0030] The inner side surface of the concave protrusion 221 is
gradually narrowed in a downward direction while corresponding to
the outer surface of the outer protrusion 121a formed in the bottom
surface 120 of the inner cup 100.
[0031] In the drawings of the present invention, the male
protrusion 121 and the concave protrusion 221 are formed in
rectangular shapes. Any shape such as a triangle shape, a cross
shape, a tooth shape or something is possible only when it is able
to prevent the rotation of the inner cup 100 during the rotation of
the lid 300 in a state that the inner and outer cups 100 and 200
are engaged.
[0032] The bottom surface 220 of the outer cup 200 is formed of an
engaging groove 222 and an engaging hole 223 so that it is
vertically matched with the engaging groove 123 of the inner
surface 120 of the inner cup.
[0033] The bottom surface 220 of the outer cup 200 and the bottom
surface 120 of the inner cup 100 are fixedly engaged with an
engaging member 500. Here, as the engaging member 500, a bolt/nut,
screws or something may be used. In case that they are engaged
using a bolt/nut, the nut is positioned in the engaging groove 123
of the inner cup 100 and is engaged with a bolt which is externally
inserted through the engaging hole 223. Here, the head of the bolt
is protruded from the engaging groove 123 through the engaging hole
223 in a state that it is positioned in the engaging groove 222 of
the outer cup 200.
[0034] When they are engaged using screws without using the nut, a
female thread part (not shown) is formed on the inner
circumferential surfaces of the bottom surfaces 220 and 120 in
which the engaging hole 223 and the engaging groove 123 are formed.
At this time, the head of the thread is positioned in the engaging
groove 222 of the outer cup 220.
[0035] In a state that the inner and outer cups 100 and 200 are
engaged with each other, a hollow space 510 is formed between the
inner cup 100 and the outer cup 200. A heat conduction of the
stuffs stored in the inner cup 100 is disconnected by means of the
hollow space 51, so that it is possible to keep beverage such as
coffee hot for a long time. Since the heat is not transferred to
the outer cup 200, a user can easily hold the cup.
[0036] An insertion sheet (advertisement sheet or personal photo or
image) is rolled and inserted into the hollow space 510 between the
inner cup 100 and the outer cup 200. When the outer cup 200 is made
of a transparent synthetic resin or a glass material, since the
stuffs of the insertion sheet 400 can be seen from the outside, it
is possible to obtain an advertisement effect.
[0037] An engaging part 310 having a packing groove 311 is
downwardly protruded in the lid 300 for engaging a packing 520
wherein the lid 300 is opened or closed by rotating the same on the
upper side of the inner cup 100. A male thread part 312 is formed
along an outer circumferential side of the engaging part 310, so
that it is engaged with the female thread part 111 of the inner cup
100.
[0038] The inner cup 100 is pushed into the upper side of the outer
cup 200, and the insertion sheet 400 with an advertisement or photo
is rolled and inserted into the space between the inner cup 100 and
the outer cup 200.
[0039] The upper side of the outer cup 220 is inserted into the
space 114 of the upper side of the inner cup, and a polygonal male
protrusion 121 protruded on the bottom surface 120 of the inner cup
is inserted into the interior of the polygonal concave protrusion
221 protruded upwardly and the bottom surface 120 of the inner cup
and the bottom surface 200 of the outer cup are engaged through the
engaging hole 223 and the engaging grooves 222 and 123 by using the
engaging member 500 such as bolt/nut or screws. So, even when the
lid 300 is rotated, the inner cup 100 does not rotate along with
the lid 300.
[0040] The packing 520 is inserted into the engaging groove 222 of
the outer cup 200 in which the engaging member 500 is inserted, and
the space 114 of the inner cup 100 engaged with the upper side of
the side surface 210 of the outer cup for thereby obtaining a
waterproof effect.
[0041] The lid 300 is thread-engaged to the upper side of the side
surface 110 of the inner cup 100 after the inner and outer cups 100
and 200 are engaged for thereby finishing an assembling work of the
double structure cup. Here, the packing 520 is inserted between the
packing groove 311 and the step part 112 corresponding to the
engaging portion of the lid 300 for thereby obtaining a waterproof
effect.
[0042] In the double structure cup according to the present
invention, since the space 510 is formed between the inner and
outer cups 100 and 200, it is possible to prevent a heat
conduction, and when the cup is opened or closed by rotating the
lid 300, the inner and outer cups 100 and 200 are engaged with the
polygonal protrusions 121 and 221 and are further secured by means
of the engaging member 500, so that the inner cup 100 does not
rotate idle, whereby it is possible to easily open and close the
lid 300.
[0043] The size of the concave protrusion 221 is equal to or
smaller than the male protrusion 121, so that the male protrusion
121 is tightly inserted into the concave protrusion 221 for thereby
engaging the inner and outer cups 100 and 200. If necessary, the
engaging member 500 may be omitted. The same functions as the above
described function may be obtained by allowing the male protrusion
121 and the concave protrusion 221 to be opposite to each
other.
[0044] FIG. 5 is a partial assembled cross sectional view
illustrating a double structure cup according to another embodiment
of the present invention.
[0045] In case that the inner cup 100 is made of stainless steel,
not a synthetic resin, since it is impossible to form the male
protrusion 121 on the bottom surface 120, a polygonal male
protrusion 131 is formed for separately manufacturing a stainless
steel plate 130 and inserting into the concave protrusion 221 of
the outer cup 200. The engaging groove 133 is formed at the center
of the same, and the flange 132 is fixed at the bottom surface 120
of the inner cup 100 by means of a welding method.
[0046] The inner and outer cups 100 and 200 are engaged using the
engaging member 500 such as bolt/nut or screws.
[0047] As described above, the present invention is directed to
double structure cup which is able to effectively store a certain
amount of beverage or liquid stuff, while substantially preventing
a heat conduction, for thereby obtaining a heat and cold storing
effect.
[0048] In addition, in the present invention, when the lid
thread-engaged to the inner cup is rotated for opening or closing
the cup, the inner cup does not rotate along with the lid while
keeping being fixed to the outer cup, so that it is possible to
easily open and close the lid. The inner and outer cups can be
easily assembled or disassembled, and a certain insertion sheet can
be inserted into a space between the inner and outer cups for an
advertisement, and the inserted sheet can be easily exchanged with
new one.
[0049] As the present invention may be embodied in several forms
without departing from the spirit or essential characteristics
thereof, it should also be understood that the above-described
examples are not limited by any of the details of the foregoing
description, unless otherwise specified, but rather should be
construed broadly within its spirit and scope as defined in the
appended claims, and therefore all changes and modifications that
fall within the meets and bounds of the claims, or equivalences of
such meets and bounds are therefore intended to be embraced by the
appended claims.
* * * * *