U.S. patent application number 12/691381 was filed with the patent office on 2011-07-21 for heat-insulating paper cup.
Invention is credited to Albert HSIEH.
Application Number | 20110174872 12/691381 |
Document ID | / |
Family ID | 44276838 |
Filed Date | 2011-07-21 |
United States Patent
Application |
20110174872 |
Kind Code |
A1 |
HSIEH; Albert |
July 21, 2011 |
HEAT-INSULATING PAPER CUP
Abstract
A heat-insulating paper cup has a cup body with a conical
cylindrical wall, a cup bottom and a cup rim. A glued
heat-insulating tube has its inner wall sleeved onto the exterior
of the conical cylindrical wall of the cup body. The
heat-insulating tube and the conical cylindrical wall of the cup
body are adhered securely by glue. The heat-insulating tube is of
conical cylindrical shape and mated with the conical cylindrical
wall. Moreover, the external wall of the heat-insulating tube is
configured to have a smooth surface. Multiple raised lines are
protruded at interval onto the inner wall of the heat-insulating
tube, and mated with the conical cylindrical wall of the cup body.
Multiple hollow ducts are set into the heat-insulating tube at
interval in tune with the raised lines.
Inventors: |
HSIEH; Albert; (Lugang
Township, TW) |
Family ID: |
44276838 |
Appl. No.: |
12/691381 |
Filed: |
January 21, 2010 |
Current U.S.
Class: |
229/403 |
Current CPC
Class: |
B65D 81/3869 20130101;
B65D 81/3874 20130101 |
Class at
Publication: |
229/403 |
International
Class: |
B65D 3/04 20060101
B65D003/04 |
Claims
1. A heat-insulating paper cup, which comprising: a cup body, which
a conical cylindrical wall, a cup bottom and a cup rim; a glued
heat-insulating tube made of paper material; the inner wall of the
heat-insulating tube is sleeved onto the exterior of the conical
cylindrical wall of the cup body, and the heat-insulating tube and
the conical cylindrical wall of the cup body are adhered securely
by glue W; the heat-insulating tube is of conical cylindrical shape
and mated with the conical cylindrical wall; moreover, the external
wall of the heat-insulating tube is configured to have a smooth
surface; multiple raised lines, protruded at interval onto the
inner wall of the heat-insulating tube at an oblique angle, and
mated with the conical cylindrical wall of the cup body; multiple
hollow ducts, set into the heat-insulating tube at interval and at
an oblique angle in tune with the raised lines.
2. The device defined in claim 1, wherein the heat-insulating tube
is made of corrugated paper, so the corrugated inner layer of the
corrugated paper is defined to form said raised line and hollow
duct.
3. The device defined in claim 1, wherein the raised lines are
protruded at interval onto the inner wall of the heat-insulating
tube at an oblique angle, and said hollow ducts are also configured
to have an oblique angle in tune with the raised lines.
4. The device defined in claim 3, wherein said raised line is
extended obliquely from the top to the bottom of the
heat-insulating tube.
5. The device defined in claim 3, wherein said raised line is
extended transversely into a wavy pattern between the top and
bottom of the heat-insulating tube.
Description
CROSS-REFERENCE TO RELATED U.S. APPLICATIONS
[0001] Not applicable.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
[0002] Not applicable.
NAMES OF PARTIES TO A JOINT RESEARCH AGREEMENT
[0003] Not applicable.
REFERENCE TO AN APPENDIX SUBMITTED ON COMPACT DISC
[0004] Not applicable.
BACKGROUND OF THE INVENTION
[0005] 1. Field of the Invention
[0006] The present invention relates generally to a heat-insulating
paper cup, and more particularly to an innovative one which allows
raised lines to be set on the inner wall of the heat-insulating
tube and mated closely with the cup body.
[0007] 2. Description of Related Art
[0008] Including Information Disclosed Under 37 CFR 1.97 and 37 CFR
1.98.
[0009] Since the conventional single-layer paper cup filled with
hot drink or water makes it difficult to hold manually, a
heat-insulating paper cup has been developed in the industry.
[0010] Said heat-insulating paper cup is structurally configured in
such a manner that an external paper tube is generally sleeved onto
the exterior of the original cup body, so a two-layer wall is
employed for heat insulation; yet, there still exist the following
shortcomings against conventional heat-insulating paper cup:
[0011] As for the typical structure wherein spaced ribs are set on
the external wall of the external paper tube, the heat-insulating
effect can be enhanced by the bigger thickness of the external
paper tube with spaced ribs, but the irregular surface formed by
the spaced ribs leads to difficult advertisement printing and
fabrication on the surface of the heat-insulating paper cup.
[0012] Moreover, upper and lower flanges of the external paper tube
are configured into incurved shape to form an annular space of
better insulation effect between the external paper tube and cup
body of conventional heat-insulating paper cup. Yet, it is observed
during actual application that, only incurved portions of the upper
and lower flanges of external paper tube are used as a support, a
vacant shell is formed between the intermediate region of the
external paper tube and the cup body, so the external paper tube is
easily squashed when it is held manually.
[0013] Thus, to overcome the aforementioned problems of the prior
art, it would be an advancement if the art to provide an improved
structure that can significantly improve the efficacy.
[0014] Therefore, the inventor has provided the present invention
of practicability after deliberate experimentation and evaluation
based on years of experience in the production and development of
related products.
BRIEF SUMMARY OF THE INVENTION
[0015] The enhanced efficacy of the present invention is as
follows:
[0016] Based on the unique configuration of the present invention
wherein the "heat-insulating paper cup" allows the glued external
wall of the heat-insulating tube to be configured with a smooth
surface, and the raised lines on the inner wall of the
heat-insulating tube are mated closely with the conical cylindrical
wall of the cup body. This can facilitate advertisement printing
and fabrication on the surface of heat-insulating paper cup.
Moreover, the raised lines on the inner wall of the heat-insulating
tube can support the ribs, thus enhancing the structural strength
and robustness of the heat-insulating tube and avoiding squashing
during manual holding.
[0017] The improvements brought about by this invention are as
follows:
[0018] Based on the structural configuration wherein the raised
line is configured into an oblique angle, the flow speed of glue
can be delayed to prevent dripping of the glue.
[0019] Based on the structural configuration wherein the raised
lines and hollow ducts of the heat-insulating tube are staggered in
relation to the curvature and extension direction of the
heat-insulating tube, it is possible to support more strongly the
heat-insulating tube due to the torsional resistance of the raised
lines and hollow ducts.
[0020] When said hollow duct penetrates the top and bottom of the
heat-insulating tube, the heat-insulating paper cups are
overlapped, then the hollow duct will be ventilated to avoid vacuum
suction due to tight sleeving between annular space of
heat-insulating paper cup, and enable easier removal of the closely
overlapped heat-insulating paper cups.
[0021] Although the invention has been explained in relation to its
preferred embodiment, it is to be understood that many other
possible modifications and variations can be made without departing
from the spirit and scope of the invention as hereinafter
claimed.
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
[0022] FIG. 1 shows perspective view of a preferred embodiment of
the present invention.
[0023] FIG. 2 shows an exploded perspective view of a preferred
embodiment of the present invention.
[0024] FIG. 3 shows a schematic view where of the heat-insulating
tube of the present invention where it is unfolded.
[0025] FIG. 4 shows a top view of a preferred embodiment of the
present invention.
[0026] FIG. 5 is a schematic view showing the flow process diagram
of the present invention.
[0027] FIG. 6 shows a schematic view of the present invention
wherein the raised line is of a wavy pattern.
DETAILED DESCRIPTION OF THE INVENTION
[0028] FIGS. 1-4 depict preferred embodiments of a heat-insulating
paper cup of the present invention, which are provided for only
explanatory objective for patent claims. Said heat-insulating paper
cup includes a cup body 10, which has a conical cylindrical wall
11, a cup bottom 12 and a cup rim 13. A glued heat-insulating tube
20 is made of paper material. The inner wall 21 of the
heat-insulating tube 20 is sleeved onto the exterior of the conical
cylindrical wall 11 of the cup body 10, and the heat-insulating
tube 20 and the conical cylindrical wall 11 of the cup body 10 are
adhered securely by glue W (shown in FIG. 4). The heat-insulating
tube 20 is of conical cylindrical shape and mated with the conical
cylindrical wall 11. Moreover, the external wall 22 of the
heat-insulating tube 20 is designed with a smooth surface, so this
can facilitate advertisement printing and fabrication on the
surface of heat-insulating paper cup, thus increasing the
visibility of the business performance and improving the value of
the products. Meanwhile, the users are allowed to hold stably the
heat-insulating tube 20 which can prevent efficiently heat transfer
and avoid the scalding of hot liquid stored in the cup body 10 to
ensure the safety of utilization.
[0029] Multiple raised lines 23 are protruded at interval onto the
inner wall 21 of the heat-insulating tube 20 at an oblique angle,
and mated with the conical cylindrical wall 11 of the cup body 10.
Said raised line 23 permits reduction of the contact area with the
cup body 10, helping to cut down efficiently the heat transfer.
[0030] Multiple hollow ducts 24 are set into the heat-insulating
tube 20 at interval and at an oblique angle in tune with the raised
lines 23.
[0031] Of which, the heat-insulating tube 20 is made of corrugated
paper, so the corrugated inner layer of the corrugated paper is
defined to form said raised line 23 and hollow duct 24. Said hollow
duct 24 will then be ventilated to avoid vacuum suction due to
tight sleeving between annular space of heat-insulating paper cup,
and enable easier removal of the closely overlapped heat-insulating
paper cups.
[0032] Of which, said raised line 23 is available with multiple
patterns, referring to FIGS. 2, 3, said raised line 23 is extended
obliquely from the top to the bottom of the heat-insulating tube
20, or referring to FIG. 6, said raised line 23 is extended
transversely into a wavy pattern between the top and bottom of the
heat-insulating tube 20.
[0033] Based on above-specified structural configuration, said
heat-insulating paper cup is formed by the steps in FIG. 5, wherein
the unfolded heat-insulating tube 20 is folded into a conical
cylindrical pattern in tune with the cup body 10, and the inner
wall 21 of the conical cylindrical heat-insulating tube 20 is
coated with glue W. Next, the cup body 10 is sleeved onto it such
that the heat-insulating tube 20 and the conical cylindrical wall
11 of the cup body 10 are adhered by glue W (in conjunction with
FIG. 4).
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