U.S. patent application number 13/857531 was filed with the patent office on 2014-03-13 for airtight container for keeping food.
The applicant listed for this patent is SAMKWANG GLASS CO., LTD.. Invention is credited to DO HWAN HWANG.
Application Number | 20140069925 13/857531 |
Document ID | / |
Family ID | 49103558 |
Filed Date | 2014-03-13 |
United States Patent
Application |
20140069925 |
Kind Code |
A1 |
HWANG; DO HWAN |
March 13, 2014 |
AIRTIGHT CONTAINER FOR KEEPING FOOD
Abstract
The present invention relates to an airtight container for
preserving food, and more particularly, in order to make the
molding of the container easy, reduce the manufacturing cost of the
container while minimizing the fraction defective, and manufacture
a tempered glass container which is not broken by collision among
containers during production or distribution by making the
thickness of the entire container uniform, the present invention
provides an airtight container for preserving food comprising a
container body wherein a lid with a locking member is detachably
coupled on the upper portion on the peripheral surface and a space
for food accommodation is provided therein, wherein a stumbling
sill 121 with a lateral groove toward the inner direction is formed
on the outer surface of the wall 12 of the container body, a side
wall of groove 122, which is extended downwardly from the width of
the stumbling sill to the outer surface of the wall, is formed on
both ends of the stumbling sill, and protruded surface 124
corresponding to the groove depth of the stumbling sill is formed
internally in the inner surface of the wall, thereby forming the
wall with a uniform thickness.
Inventors: |
HWANG; DO HWAN; (Seoul,
KR) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
SAMKWANG GLASS CO., LTD. |
Gyoenggi-do |
|
KR |
|
|
Family ID: |
49103558 |
Appl. No.: |
13/857531 |
Filed: |
April 5, 2013 |
Current U.S.
Class: |
220/315 |
Current CPC
Class: |
B65D 1/22 20130101; B65D
45/22 20130101 |
Class at
Publication: |
220/315 |
International
Class: |
B65D 1/22 20060101
B65D001/22 |
Foreign Application Data
Date |
Code |
Application Number |
Sep 11, 2012 |
KR |
20-2012-0008092 |
Claims
1. An airtight container for preserving food comprising a container
body wherein a lid with a locking member is detachably coupled on
the upper portion on the peripheral surface and a space for food
accommodation is provided therein, wherein a stumbling sill 121
with a lateral groove toward the inner direction is formed on the
outer surface of the wall 12 of the container body, a side wall of
groove 122, which is extended downwardly from the width of the
stumbling sill to the outer surface of the wall, is formed on both
ends of the stumbling sill, and protruded surface 124 corresponding
to the groove depth of the stumbling sill is formed internally in
the inner surface of the wall, thereby forming the wall with a
uniform thickness.
2. The airtight container according to claim 1, wherein coupling
protrusion 123 is protruded downwardly in the outer portion of the
stumbling sill 121.
Description
TECHNICAL FIELD
[0001] The present invention relates to an airtight container for
preserving food, more particularly, to an airtight container for
preserving food, which is easy to manufacture by providing a
stumbling sill in the form of a groove on the outer surface of the
container wall, instead of the protruded outwardly from the upper
end of a container body to which a lid is coupled in the related
art, and is able to prevent the container from being damaged during
the process of packaging and distribution.
BACKGROUND ART
[0002] Generally, the airtight containers have been widely used for
preserving various foods, for example, side dishes, vegetables,
fruits and other raw food materials to be cooked, for a long time.
These airtight containers are usually provided with a lid with a
built-in packing in the container body to prevent the odors of
foods packed therein from being emitted out. The details will be
described more specifically referring to the drawings as set forth
below.
[0003] As shown in FIG. 9, the conventional airtight container 1
includes a container body 2 and a lid 3, and a locking member 3a is
provided around the periphery of the lid 3. Further, a locking
piece 3b is formed in the inner surface of the locking member 3a, a
protruded supporting corbel 2a is provided on the upper peripheral
surface of the container body 2, and a joint groove 2b is formed on
the inner surface of the supporting corbel 2a.
[0004] In manufacturing the conventional type of airtight
containers 1, the container body 2 is molded along the upper
peripheral surface so that supporting corbel 2a can be protruded
thus making the molding process very complex. Further, because the
joint groove 2b should be formed on the lower internal surface of
the protruded supporting corbel 2a the molding process is very
challenging thereby increasing the manufacturing cost. In addition,
there is a high risk of collision during distribution process among
the finished products of the conventional type of airtight
containers due to the protruded supporting corbel 2a which result
in breakage thus decreasing productivity.
[0005] A patent application publication identified below, being a
related art, discloses a method of manufacturing an airtight
container attempting to remedy the problems shown in FIG. 9 due to
the presence of the protruded supporting corbel 2a by providing a
coupling groove on the outer surface of the wall of the container
so that a locking member of the lid can be coupled thereunto.
However, the above invention also has serious disadvantage. More
specifically, the above invention employs a method of protruding a
part of the wall to the outside in order to provide a coupling
groove on the wall surface which results in undercut after molding
thus requiring a slide mold at the time of preparing a mold. This
increases the cost for manufacturing a mold. Further, it also
causes the defect in the final product of the container made of
glass because the thickness of the container is not uniform it
cannot maintain a uniform rigidity of tempered glass even though it
undergoes a reinforcing process of quick cooling after increasing
to a high temperature.
PRIOR ART DOCUMENTS
Patent Document
[0006] Japanese Utility Model Application Publication No. sho
64-042259
SUMMARY OF INVENTION
Problems that the Invention is to Solve
[0007] The present invention provides an improved airtight
container for preserving food, whose method of molding is easy,
reduces its manufacturing cost, minimizes fraction defective thus
reducing unit production cost, improves productivity, and enables
to maintain an overall uniform thickness of the container of the
final product the capable of manufacturing a tempered glass
container which can be prevented from unexpected breakage of the
products during their production or distribution for sales.
Means for Solving the Problems
[0008] In order to achieve the above objective, the present
invention provides an airtight container for preserving food
comprising a container body wherein a lid with a locking member is
detachably coupled on the upper portion on the peripheral surface
and a space for food accommodation is provided therein, wherein a
stumbling sill with a lateral groove toward the inner direction is
formed on the outer surface of the wall of the container body, a
side wall of groove, which is extended downwardly from the width of
the stumbling sill to the outer surface of the wall, is formed on
both ends of the stumbling sill, and protruded surface
corresponding to the groove depth of the stumbling sill is formed
internally in the inner surface of the wall, thereby forming the
wall with a uniform thickness.
[0009] In an exemplary embodiment of the present invention, a
coupling protrusion is protruded downwardly on the outer portion of
the stumbling sill.
Advantage of Invention
[0010] The present invention has many advantages. First, a
container body can be molded without a protruded part on the outer
surface. Further, a stumbling sill to which a lid is coupled is not
protruded to the outer surface of the container but is formed so
that it is dented inwardly. As a result, the molding process
becomes to be easy; the manufacturing cost is reduced thereby
lowering unit production cost. Still further, the container of the
present invention is not easily broken during the assembly or
distribution for sales. In addition, the inner surface of the wall
of the container is protruded inwardly corresponding to the
stumbling sill formed on the outer surface of the container wall
thus providing a uniform thickness being capable of manufacturing
tempered glass container thereby improving durability of the
container meeting the customers' needs.
BRIEF DESCRIPTION OF THE DRAWINGS
[0011] FIG. 1 is a perspective view of an airtight container
according to an embodiment of the present invention.
[0012] FIG. 2 is a cross sectional view of an airtight container
according to an embodiment of the present invention.
[0013] FIG. 3 is an enlarged view of part A of FIG. 2.
[0014] FIG. 4 is a plan sectional view of an airtight container
taken along line `B-B`.
[0015] FIG. 5 is an assembly view of an airtight container and a
lid according to an embodiment of the present invention.
[0016] FIG. 6 is a schematic view of a mold for forming an airtight
container according to an embodiment of the present invention.
[0017] FIG. 7 is a sectional view of an airtight container formed
via the mold of FIG. 6a.
[0018] FIG. 8(a) is a partial enlarged view of part C of FIG. 7
showing the polishing process of an airtight container according to
an embodiment of the present invention, and FIG. 8(b) is a
sectional view showing the polishing process of an airtight
container according to the related art.
[0019] FIG. 9 is an exploded perspective view of a container body
and a lid in an airtight container according to the related
art.
MODE FOR CARRYING OUT THE INVENTION
[0020] Reference will now be made in detail to various embodiments
of the present invention, examples of which are illustrated in the
accompanying drawings and described below. While the invention will
be described in conjunction with exemplary embodiments, it will be
understood that the present description is not intended to limit
the invention to those exemplary embodiments. On the contrary, the
invention is intended to cover not only the exemplary embodiments,
but also various alternatives, modifications, equivalents and other
embodiments, which may be included within the spirit and scope of
the invention as defined by the appended claims.
[0021] FIG. 1 is a perspective view of an airtight container
according to an embodiment of the present invention. FIG. 2 is a
cross sectional view of an airtight container according to an
embodiment of the present invention. FIG. 3 is an enlarged view of
part A of FIG. 2. FIG. 4 is a plan sectional view of an airtight
container taken along line `B-B`. FIG. 5 is an assembly view of an
airtight container and a lid according to an embodiment of the
present invention.
[0022] Referring to FIGS. 1 to 5, the container body 10 is provided
with a receiving space 11 for accommodating food with its upper end
open, and the side wall of the receiving space 11 is surrounded by
wall 12 and a stumbling sill 121 with a groove toward the inner
direction is formed on the outer surface of the wall 12.
[0023] The stumbling sill 121 has a predetermined lateral length,
wherein a side wall of groove 122, which is extended downwardly
from the width of the stumbling sill to a predetermined part of the
outer surface of the wall, is formed on both ends of the stumbling
sill, and in this case, there occurs no undercut when molding an
airtight container 10 using a mold and thus taken out of the formed
airtight container 10 is easy.
[0024] Referring to FIGS. 3 and 5, the stumbling sill 121 is formed
such that a part of its inner portion is a horizontal plane thereby
enabling a locking member 21 formed on a lid 20 to be coupled
thereto. Also, in order to prevent the voluntary release of the
coupling of a locking member 21, the coupling protrusion 123 is
protruded downwardly on the outer surface of the stumbling sill 121
so that upper protruded locking protrusion 22 can be coupled in the
locking member 1.
[0025] On the periphery of the lid 20, there is provided a packing
30, which is connected to the top end of the wall 12 of the
airtight container, and the receiving space 11 is air-tightly
sealed by the packing 30 when the locking member 21 is coupled to
the stumbling sill 121.
[0026] Meanwhile, in addition to the molding the airtight container
10 using glass, it is necessary that the overall thickness of the
entire wall 12 is made uniform so that it can be strengthened. To
this end, as shown in FIGS. 3 and 4, a protruded surface 124 which
is protruded inwardly is formed on the inner surface of the wall 12
corresponding to the groove depth of the stumbling sill 121.
[0027] More specifically, the protruded surface 124, as shown in
the cross sectional view of FIG. 3, is inwardly protruded from
where the stumbling sill 121 is formed, and the connecting part
between the inner surface of the wall 12 and here the protruded
surface 124 is prepared in a circular arc instead of an angulated
shape.
[0028] Further, as shown in the plan sectional view in FIG. 4, the
protruded surface 124 is protruded inwardly from where the
stumbling sill 121 is formed and here the connecting part between
the inner surface of the wall 12 and here the protruded surface 124
is prepared in a circular arc instead of an angulated shape.
[0029] FIG. 6 is a schematic view of a mold for forming an airtight
container according to an embodiment of the present invention; FIG.
7 is a sectional view of an airtight container formed via the mold
of FIG. 6a; and FIG. 8(a) is a partial enlarged view of part C of
FIG. 7 showing the polishing process of an airtight container
according to an embodiment of the present invention, and FIG. 8(b)
is a sectional view showing the polishing process of an airtight
container according to the related art.
[0030] Referring to FIG. 6, the airtight container 10 is molded via
a base mold 31 for molding the outer surface of the wall 12 and the
outer surface of the bottom part; an auxiliary mold 33 for
supporting the upper end of the wall 12; and a pressing mold 32 for
the purpose of pressing a battered glass material while
simultaneously molding the receiving space 11 of the airtight
container 10. This is a typical method of manufacturing a glass
container.
[0031] Once the molding is completed as shown in FIG. 7 and the
airtight container 10 is taken out of the mold, the glass material
sticks out, as shown in FIG. 8, from the point where the molds 31,
32, and 33 meet together, and forms a burr 101. The burr 101 is
removed by a fire polishing process which applies flame being
sprayed by a torch 40.
[0032] As shown in FIG. 9, the airtight container 10 of the present
invention does not provide a supporting corbel 2a on the upper
portion. Therefore, it decreases the width of the torch 40 thereby
reducing the amount of flame spray by the torch 40, and as a
result, reducing the manufacturing cost due to the reduction in the
amount of flame materials being used.
[0033] On the contrary, in the related art where a supporting
corbel 2a is formed on the upper portion of the wall 12, the range
of the burr occurrence is relatively wider, and thus requires a
torch 40 with a relatively wider spray width, thus increasing the
amount of flame material being used, and as a result, increasing
the manufacturing cost. The present invention has solved the above
problem.
[0034] The foregoing descriptions of specific exemplary embodiments
of the present invention have been presented for purposes of
illustration and description. They are not intended to be
exhaustive or to limit the invention to the precise forms
disclosed, and obviously many modifications and variations are
possible in light of the above teachings. The exemplary embodiments
were chosen and described in order to explain certain principles of
the invention and their practical application, to thereby enable
others skilled in the art to make and utilize various exemplary
embodiments of the present invention, as well as various
alternatives and modifications thereof. It is intended that the
scope of the invention be defined by the Claims appended hereto and
their equivalents.
* * * * *