U.S. patent application number 10/399490 was filed with the patent office on 2004-02-19 for drinking cup and lid.
Invention is credited to Hanson, Jack Fraser.
Application Number | 20040031714 10/399490 |
Document ID | / |
Family ID | 22910368 |
Filed Date | 2004-02-19 |
United States Patent
Application |
20040031714 |
Kind Code |
A1 |
Hanson, Jack Fraser |
February 19, 2004 |
Drinking cup and lid
Abstract
Disclosed is a lid for a drinking cup, and a nestable drinking
cup. The lid has a top wall, an annular side wall depending from
the top wall and an annular mounting portion at the bottom of the
side wall for sealingly engaging a brim portion of the drinking
cup. A first recessed portion is provided in the top wall. A
drinking opening is located in the first recesses portion to enable
drinking of a beverage from the drinking cup without removal of the
lid. The side recess wall in the first recesses portion includes a
convexly curved portion near the drinking opening defining a
chute-like structure that directs the beverage from the drinking
opening to a user's mouth. The nestable drinking cup is made of
rigid, injection-molded plastic and includes an upper ribbed
portion having a band of vertically-oriented, outwardly extending
ribs about the periphery of the drinking cup, wherein the upper
ribbed portion reduces heat transfer from hot contents in the cup
to a user's hand.
Inventors: |
Hanson, Jack Fraser;
(Unionville, CA) |
Correspondence
Address: |
Luke A Kilyk
Kilyk & Bowersox
53 A East Lee Street
Warrenton
VA
20186
US
|
Family ID: |
22910368 |
Appl. No.: |
10/399490 |
Filed: |
April 17, 2003 |
PCT Filed: |
October 19, 2001 |
PCT NO: |
PCT/CA01/01452 |
Current U.S.
Class: |
206/505 ;
220/713 |
Current CPC
Class: |
B65D 2543/00842
20130101; B65D 2543/00796 20130101; B65D 2543/00046 20130101; B65D
2543/00685 20130101; B65D 2543/00092 20130101; B65D 2543/00657
20130101; B65D 47/06 20130101; B65D 2543/00537 20130101; B65D
2543/00527 20130101; B65D 2543/00731 20130101; B65D 2543/00296
20130101; B65D 43/0212 20130101; B65D 1/265 20130101 |
Class at
Publication: |
206/505 ;
220/713 |
International
Class: |
B65D 021/00; A47G
019/22 |
Claims
We claim:
1. A nestable drinking cup made of rigid, injection-molded plastic,
comprising: (a) a cup body having a generally circular periphery
and a side wall, and comprising a brim portion, an upper ribbed
portion, a lower portion and a bottom of smaller diameter than the
brim portion; (b) the upper ribbed portion having a band of
vertically-oriented, outwardly extending ribs about the periphery
of the drinking cup, wherein the upper ribbed portion reduces heat
transfer from hot contents in the cup to a user's hand.
2. The drinking cup of claim 1, wherein the ribs are solid.
3. The drinking cup of claim 1, wherein the upper ribbed portion
comprises about one-third the total height of the cup body.
4. The drinking cup of claim 1, wherein the side wall of the lower
portion is tapered at an angle relative to vertical.
5. The drinking cup of claim 1, wherein the upper ribbed portion
comprises a lower inwardly curved section that can be used by the
user to grasp and hold the cup.
6. The drinking cup of claim 1, wherein the ribs are generally
triangular in shape in cross section.
7. The drinking cup of claim 1, wherein the ribs have a depth and
two ends, and the depth decreases at the ends.
8. A lid for a drinking cup, the lid comprising: (a) a top wall
having a generally circular periphery; (b) an annular side wall
depending from the top wall about its periphery and an annular
mounting portion at the bottom of said side wall for sealingly
engaging a brim portion of the drinking cup; (c) a first recessed
portion in the top wall comprising a bottom recess wall and a side
recess wall, wherein the side recess wall is adjacent the periphery
of the top wall; (d) a drinking opening in the bottom recess wall
proximate the side recess wall to enable drinking of a beverage
from the drinking cup without removal of the lid; and (e) a
convexly curved portion disposed on the side recess wall and near
the drinking opening defining a chute-like structure that directs
the beverage from the drinking opening to a user's mouth.
9. The lid of claim 8, wherein the convexly curved portion extends
from the bottom recess wall to an upper end of the side recess
wall.
10. The lid of claim 8, wherein the first recessed portion
accommodates an upper lip of the user's mouth.
11. The lid of claim 10, wherein the first recessed portion is
generally oval in shape.
12. The lid of claim 8, further comprising a second recessed
portion defined by a bottom surface, wherein the second recessed
portion has a depth less than the depth of the first recessed
portion.
13. The lid of claim 12, wherein the bottom surface is sloped
towards the recessed portion causing any liquid in the second
recessed portion to flow to the first recessed portion.
14. The lid of claim 12, wherein the second recessed portion is
dimensioned to provide an area on which a bottom of a second cup
may rest, allowing the second cup to stack onto a first cup and the
lid.
15. In combination, a lid of claim 8 sealingly engaged to a
drinking cup of claim 1.
Description
FIELD OF THE INVENTION
[0001] The present invention relates generally to a drinking cup
for hot beverages and a lid for use in combination with a drinking
cup wherein the lid enables drinking from the cup without removal
of the lid.
BACKGROUND OF THE INVENTION
[0002] It is known to sell hot beverages in disposable drinking
cups and lids for carry-out sale of beverages such as coffee. Many
of the lids commonly in use for this purpose must be removed prior
to drinking of the beverage to provide access to the beverage.
Removal of the lid may result in splashing or spilling of the
beverage if the user wants to drink the beverage while walking or
traveling in a vehicle.
[0003] Some disposable lids have score lines or the like formed in
them to define a removable portion which may be punched out or
folded to provide a drinking opening from which the beverage may be
poured out. One disadvantage of this type of lid is that it may be
inconvenient for the user to perform the requisite penetration or
folding of the lid, particularly if the user is walking or riding
in a vehicle, or has only one hand free.
[0004] Some disposable lids have included in them preformed
openings for drinking rather than have the score lines. However, in
some of these lids the position of the opening makes it difficult
or uncomfortable for the user to drink the beverage due to the way
in which the user's mouth engages the lid.
[0005] U.S. Pat. No. 4,589,569 to Clements addresses some of the
problems of the prior art lids by providing a disposable lid for a
drinking cup having a top wall having a drinking opening formed in
it. The top wall has a recess formed in it adjacent the drinking
opening to accommodate the upper lid of the user. This arrangement
makes it more comfortable for the user. However, the location of
the drinking opening on the top wall of the lid still results in
spills and splashing in some circumstances, and dribbling of the
beverage down the side of the drinker's mouth.
[0006] Disposable hot drink cups may insulate the hand of the user
from the hot temperature of the beverage in three general ways: (a)
by using the insulating qualities of the material used to make the
cup, (b) by the manner of fabrication of the cup, or (c) by
providing a handle to hold the cup without touching its outer
walls.
[0007] Examples of the first type are cups made of thermoformed
plastic foam or double-walled cups. The insulating properties of
foam are good, and nestable cups made therefrom are in wide use
despite the lack of a convenient handle. The second type of cups
have similar utility and result from the combination of two cup
elements to provide an insulating air space between the hot
beverage and the user's hand. Cups with handles have been used in
which the handles are made of suitably treated paper and attached
with glue along the side of the cup. The handle has unglued flanges
which fold out to provide a handle and allow the cups to nest very
well because the handle element lies flat against the outside of
the cup until folded out.
[0008] U.S. Pat. No. 4,049,187 issued to Florian is an example of a
hot cup with a handle. The thermoformed cup is nestable in a small
space and it has elements adapted to provide a stable handle. The
handle includes a tab extending radially from the brim of the cup
and a hinged flange at each side of the tab. Another example is
U.S. Pat. No. 5,203,490 issued to Roe, in which a cup made of paper
has a handle provided with a number of punched out securing tabs.
The handle lays flat against the sides of the cup to allow nesting
of the cups, and can be pulled away from the sides to form the
handle when the cup is in use.
[0009] In the case of drinking cups that are made of rigid,
injection-molded plastic, the plastic material does not have very
good insulating properties and it is difficult to attach a handle
to the cup.
[0010] These problems are addressed by the present invention.
Accordingly, it is an object of one aspect of the present invention
to provide a a rigid, injection-molded plastic drinking cup for hot
beverage having a construction that reduces the amount of heat
transmitted to the outside walls and hands of users. It is a
further object of the present invention to provide a disposable lid
for a drinking cup that minimizes the likelihood of spilling and
splashing of the beverage from the drinking opening.
SUMMARY OF THE INVENTION
[0011] In one aspect of the present invention, there is provided a
lid for a drinking cup, the lid comprising: a top wall having a
generally circular periphery; an annular side wall depending from
the top wall about its periphery and an annular mounting portion at
the bottom of said side wall for sealingly engaging a brim portion
of the drinking cup; a first recessed portion in the top wall
comprising a bottom recess wall and a side recess wall, wherein the
side recess wall is adjacent the periphery of the top wall; a
drinking opening in the bottom recess wall proximate the side
recess wall to enable drinking of a beverage from the drinking cup
without removal of the lid; and a convexly curved portion disposed
on the side recess wall and near the drinking opening defining a
chute-like structure that directs the beverage from the drinking
opening to a user's mouth.
[0012] In a further aspect of the invention, there is provided
nestable drinking cup made of rigid, injection-molded plastic,
comprising: a cup body having a generally circular periphery and a
side wall, and comprising a brim portion, an upper ribbed portion,
a lower portion and a bottom of smaller diameter than the brim
portion; the upper ribbed portion having a band of
vertically-oriented, outwardly extending ribs about the periphery
of the drinking cup, wherein the upper ribbed portion reduces heat
transfer from hot contents in the cup to a user's hand.
BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The preferred embodiments of the present invention will be
described with reference to the accompanying drawings in which like
numerals refer to the same parts in the several views and in
which:
[0014] FIG. 1 shows a combination of the lid and cup of one
preferred embodiment of the present invention;
[0015] FIG. 2 is a side view of the preferred embodiment of the cup
of FIG. 1;
[0016] FIG. 3 is partial cross-sectional view taken at line A-A of
FIG. 2;
[0017] FIG. 4 is a cross sectional view of a part of the cup of
FIG. 2;
[0018] FIG. 5 illustrates one cup of FIG. 2 nested into another
such cup;
[0019] FIG. 6 is a top view of the preferred embodiment of the lid
of FIG. 1;
[0020] FIG. 7 is a front side view of the lid of FIG. 6;
[0021] FIG. 8 is a partial side cross sectional view of the lid of
FIG. 6; and
[0022] FIG. 9 is another side view of the lid of FIG. 6.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0023] The present invention will be described with reference to
its preferred embodiments.
[0024] As shown in FIG. 1, one aspect of the present invention
provides a combination of drinking cup 10 and lid 100. The lid 100
is adapted to sealingly engage the brim portion 12 of the cup 10.
The lid 100 allows a user to drink a beverage contained in cup 10
without having to remove lid 100 while significantly reducing the
incidence of spilling and splashing.
[0025] Referring to FIG. 2, cup 10 is shown in more detail. It is
to be understood that the dimensions referred to in this
specification are for the preferred embodiment of the present
invention, and not for the invention in its broadest sense.
Dimensions of various elements of the cup 10 and lid 100 may vary
without departing from the scope of the invention.
[0026] Drinking cup 10 is preferably made of rigid,
injection-molded plastic, but other suitable construction material
may be used. Cup 10 comprises a cup body 14 having a generally
circular periphery in cross section and having a brim portion 12 at
the top of the cup body 14. Below the brim portion 12 is an upper
ribbed portion 16, and below that is a lower tapered portion 18
that preferably has a taper angle relative to vertical of about
3.5.degree.. The cup body 14 includes a bottom 20 of smaller
diameter than the brim portion 12.
[0027] In a preferred embodiment, the brim portion 12 has a
diameter of about 3.50 inches, and the bottom 20 has a diameter of
about 2.25 inches. The total height of the cup 10 from the bottom
20 to the brim portion 12 is about 5.50 inches, with the upper
ribbed portion 16 having a height of about 1.312 inches.
[0028] The brim portion 12 includes an inverted "U"-shaped flange
22 extending outwardly and downwardly. The flange 22 provides a
smooth surface to drink from and also provides an area on which a
lid, such as lid 100, may be secured into place on the cup 10.
[0029] The upper ribbed portion 16 is shown in FIG. 2 as having a
generally tapered side wall 24 that includes a lower inwardly
curved section 25. Curved section 25 is an area that can be used by
the user to grasp and hold the cup 10. A band 26 of
vertically-oriented, outwardly extending solid ribs 28 is disposed
about the periphery of the side wall 24.
[0030] The upper ribbed portion 16 helps to reduce heat transfer
from the hot contents in the cup 10 to a user's hand. As seen in
FIG. 2, the upper ribbed portion 16 comprises about 1/3 the total
height of the cup 10 (1.937 inches high compared to the total
height of the cup 10 of 5.50 inches). The remainder part of the
height of the cup 10 is made up of the lower tapered portion 18,
and an upper section 19. The upper ribbed portion 16 provides
insulation without the need of a double-walled construction as is
used in the prior art.
[0031] FIG. 3 shows a partial cross-section along line A-A of the
upper ribbed portion 16. Located on side wall 24 are a plurality of
ribs 28 that extend vertically and outwardly from the side wall 24.
In cross section as seen in FIG. 3, the ribs 28 are triangular in
shape, preferably having a depth (the distance from the tip of the
rib to the side wall) of about 0.045 inches. Each rib 28 is
preferably spaced about 0.060 inches apart (as measured from tip to
tip) and the rib's walls are angled at about 60.degree..
[0032] FIG. 4 shows a side cross sectional view of the upper ribbed
portion 16 that extends from the brim portion 12 downwardly to a
point below the upper ribbed portion 16. At its maximum depth, rib
28 is about 0.045 inches deep (the distance from the tip of the rib
to the side wall). However, ribs 28 taper at their ends 30 such
that the depth of the ribs 28 at the ends decreases to zero, thus
avoiding any sharp edges on the outside surface of the cup 10.
[0033] The shape, disposition, sizing and spacing of the ribs 28
around the periphery of the cup body 14 creates a layer of
insulating air between the tip of the ribs 28, which are grasped by
a user's hand, and the side wall 24. This reduces the heat transfer
from the hot contents of the cup 10 to the user's hands. The need
for a special handle is therefore eliminated.
[0034] The upper ribbed portion 16 also provides extra strength to
the cup body 14, thereby increasing the hoop strength in the area
where the cup 10 is typically held by the user. As seen in FIGS. 3
and 4, the inside surface 32 of the cup body 14 is smooth; the ribs
28 are on the outside of the cup 10.
[0035] FIG. 5 illustrates a first cup 10 nested within a second cup
40. The tapered side wall 24 and lower tapered portion 18 allow
nesting of a plurality of cups into each other, thereby reducing
the size of containers needed to store and transport the cups. The
smooth inside surface 32 permits the first cup 10 to rotate inside
cup 40. Moreover, the upper ribbed portion 16 of cup 10 is located
in area 34, thus the upper ribbed portion 16 does not rub against
surface 32 when cup 10 rotates. These features, along with the
ability to nest one cup into another, allows the cups 10 to be
offset printed up to eight colors in one pass in an automatic
offset printing press, at high rates of speed. This substantially
reduces manufacturing costs.
[0036] FIG. 6 is a top view of the lid 100 for use with a drinking
cup similar to cup 10, or with other disposable cups. The lid 100
has a top wall 102 with a generally circular periphery 101. As
shown in FIG. 7, an annular sidewall 104 depends from the top wall
102 about its periphery 101, and an annular mounting portion 106 is
located at the bottom end of the annular sidewall 104 for sealingly
engaging the brim portion of a drinking cup.
[0037] Referring back to FIG. 6, located on the top wall 102 is a
first recessed portion 108 having a bottom recess wall 110 and a
side recess wall 112. The side recess wall 112 is adjacent the
periphery 101 of the lid 100. As seen from top plan view, the first
recessed portion 108 is generally oval in shape so as to
accommodate a user's upper lip while drinking.
[0038] Disposed on the bottom recess wall 110 is a drinking opening
114 proximate the side recess wall 112 to enable drinking of a
beverage from a drinking cup without removal of the lid 100. The
side recess wall 112 comprises a convexly curved portion 116 near
the drinking opening 114. Preferably, the convexly curved portion
116 extends from the bottom recess wall 110 to the upper end 117 of
the side recess wall 112. The convexly curved portion 114 defines a
chute-like structure that directs the beverage from the drinking
opening 114 to the upper end 117 and into a user's mouth. This
reduces the likelihood of the beverage spilling and/or dribbling
down the sides of the user's mouth.
[0039] Also, the location of the drinking opening 114 on the bottom
recess wall 110 in the recess portion 108 allows any beverage that
does leak, spill or splash out of the drinking opening 114 to be
contained in the recess portion 108 and flow back through the
opening 114 and into the cup. The recess portion 108 also
accommodates the upper lip of the user while drinking the
beverage.
[0040] The lid 100 may, in a preferred embodiment, include a second
recessed portion 120 having a depth less than the depth of recess
portion 108, as is best seen in FIG. 8. Moreover, the bottom
surface 122 of second recessed portion 120 includes a vent hole
124. Preferably, bottom surface 122 slopes towards recess portion
108 so that any liquid that may pass through the vent hole 124 will
flow to recess portion 108 and through drinking opening 114 back
into the cup.
[0041] The second recessed portion 120 also provides extra space to
accommodate the user's nose while drinking. This second recessed
portion 120 may also be dimensioned to provide an area on which the
bottom of a second cup may rest, allowing the second cup to be
stacked on top of a first cup and lid, for ease of carrying two
cups for example.
[0042] As seen in FIG. 6, vent hole 124 is located on the outside
perimeter of the bottom surface 122, opposite the drinking opening
114. It will be understood that vent hole 124 can be located
anywhere in bottom surface 122.
[0043] The annular mounting portion 106 allows the lid 100 to be
snap fitted and sealingly engaged to a cup (as shown in FIG. 1 for
example). The lid 100 may include an external tab 126 which the
user can grasp to help in removing the lid 100 from a cup. As is
typical, the lid 100 may include one or more push down drink tabs
128 to identify the beverage contained in the cup.
[0044] Although the present invention has been shown and described
with respect to its preferred embodiments, it will be understood by
those skilled in the art that other changes, modifications,
additions and omissions may be made without departing from the
substance and the scope of the present invention as defined by the
attached claims.
* * * * *