U.S. patent number 3,752,371 [Application Number 05/165,635] was granted by the patent office on 1973-08-14 for container cap capable of being resiliently held open and closed.
This patent grant is currently assigned to Lion Fat and Oil Co., Ltd.. Invention is credited to Shinichi Araki, Hiroshi Hoshi, Masao Ishii, Shinzo Miyamoto, Rinnosuke Susuki.
United States Patent |
3,752,371 |
Susuki , et al. |
August 14, 1973 |
CONTAINER CAP CAPABLE OF BEING RESILIENTLY HELD OPEN AND CLOSED
Abstract
A cap for a container, said cap being coupled to said container
through resilient coupling means provided to said container and to
the interior of said cap. The appearance of the container is not
lost by the resilient coupling means. The cap be positively held
closed or open by the elastic force provided by said resilient
coupling means.
Inventors: |
Susuki; Rinnosuke (Shibuya-ku,
Tokyo, JA), Hoshi; Hiroshi (Narashino-shi, Chiba-ken,
JA), Araki; Shinichi (Funabashi-shi, Chiba-ken,
JA), Miyamoto; Shinzo (Soka-shi, Saitama-ken,
JA), Ishii; Masao (Yachiyo-shi, Chiba-ken,
JA) |
Assignee: |
Lion Fat and Oil Co., Ltd.
(Tokyo, JA)
|
Family
ID: |
26415445 |
Appl.
No.: |
05/165,635 |
Filed: |
July 23, 1971 |
Foreign Application Priority Data
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Jul 24, 1970 [JA] |
|
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45/74303 |
Jul 31, 1970 [JA] |
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45/76842 |
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Current U.S.
Class: |
222/182;
222/517 |
Current CPC
Class: |
B65D
47/0819 (20130101); B65D 83/40 (20130101); B65D
51/04 (20130101); B65D 47/0861 (20130101) |
Current International
Class: |
B65D
47/08 (20060101); B65D 51/04 (20060101); B65D
51/00 (20060101); B65D 83/14 (20060101); B67d
005/06 () |
Field of
Search: |
;222/182,517,532-536,515
;220/315,35,38 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Reeves; Robert B.
Assistant Examiner: Kocovsky; Thomas E.
Claims
What is claimed is:
1. A capped container comprising:
a container body having an outlet nozzle;
a container cap for covering over the nozzle when closed;
resilient coupling means integrally coupling the cap to the
container body at an angularly short portion of each;
a guide integrally formed on the container body and including upper
and lower arcuate guide surfaces vertically adjoining one another
at a neutral point of lesser radius than said guide surfaces have
vertically adjacent the neutral point; and
an engagement rod mounted on said cap, interiorly thereof and
disposed in resilient engagement with said guide for forced
movement past said neutral point as the cap is opened and closed
about the resilient coupling means.
2. A capped container, comprising:
a container body having a peripheral side wall terminating at an
end wall;
contained product dispensing means disposed generally centrally on
the end wall;
a container cap disposed, when closed, to cover over the contained
product dispensing means, the cap including a peripheral skirt;
means integrally hinging the skirt of the cap to the container body
adjacent where the container body sidewall meets the container body
end wall, so that the cap may be tipped up about the hinging means
to give access to the contained product dispensing means and tipped
down about the hinging means to close, in which position the cap
skirt becomes generally axially aligned with and abuts the
container body adjacent where the container body side wall meets
the container body end wall;
surface means defining a recess in the container body end wall
adjacent the container body side wall in radial alignment with the
hinging means;
means defining an upward projection on the container body having
its base adjacent the recess, distally of the hinging means;
means defining a cam surface on the surface means of the recess and
continuing up on said projection, being generally arcuately concave
toward said hinging means;
a cam follower;
arm means mounting the cam follower on the container cap interiorly
of the container cap generally in radial alignment with the hinge,
said arm means being disposed to urge the cam follower into
resilient engagement with the cam surface;
means defining a shorter radius, high point on the cam surface
intermediate the vertical extent thereof, being so disposed that
additional opening force, in one direction, and additional closing
force, in the reverse direction, is required when opening and
closing said container cap, to move the cam follower past the high
point, whereby the container cap is held resiliently closed when
the cam follower is below the high point and open when the cam
follower is above the high point.
3. The capped container of claim 2 wherein the cam surface is
shaped like a shallow lower case script "w" with the high point
thereof equating to the central rise of such "w."
Description
BACKGROUND OF THE INVENTION
This invention relates to caps for containers filled with rinsing
liquid, hair liquid and various other liquids. More particularly,
the invention concerns caps capable of being elastically held open
and closed.
A typical example of the prior-art container cap capable of being
elastically held open and closed is shown in FIGS. 1 and 2 of the
accompanying drawing. As is shown, container cap 5 is integrally
coupled to container body 2 having a spray nozzle 1 through
coupling hinge 3 and elastic strings 4. The opening and the closure
of the cap 5 is made with respect to the neutral point a of the
elastic strings 4.
However, in the container of the type described above the elastic
strings are exposed to the outside of the container, and when the
cap is closed the elastic strings sag between the container and cap
(as shown in FIG. 1), thus extremely spoiling the appearance of the
container. Also, since the container and cap are integrally coupled
together through the coupling hinge and elastic strings, the unit
has a complicated configuration difficult to form and expensive.
Also, if it becomes necessary to remove the cap from the container
body, this is not possible since the container and cap are
integrally coupled together through the elastic strings.
The present invention is intended to overcome the above
drawbacks.
SUMMARY OF THE INVENTION
An object of the invention is to provide a cap for a container, the
cap being removably coupled to the container body through coupling
means not exposed to the outside of the unit, and the cap being
capable of being elastically held open and closed.
A second object of the invention is to provide a cap for a
container, the cap being coupled to the container body through
coupling means not exposed to the outside of the unit to avoid
spoiling the appearance of the unit and the cap being elastically
held open and closed.
A third object of the invention is to provide a cap for a
container, the cap being elastically coupled to the container body
without using any string to reduce the material and manufacturing
cost while being capable of being elastically held open and
closed.
A fourth object of the invention is to provide a cap for a
container, the cap being removable from the container body and
hence capable of being formed independently of the container body
to simplify the formation, and the cap being elastically held open
and closed.
A fifth object of the invention is to provide a cap for a
container, the cap being very easily removable from the container
body, and the cap being elastically held open and closed.
A sixth object of the invention is to provide a cap for a
container, the cap being opened or closed by exerting a slight
torque to it until it clears a neutral point in the resilient
coupling means, and the cap being subsequently automatically held
open or closed by the elasticity of the resilient coupling
means.
A seventh object of the invention is to provide a cap for a
container, the cap being very easily and rapidly opened and closed
automatically held open and closed through the elasticity provided
by resilient coupling means coupling the cap and container to each
other.
BRIEF DESCRIPTION OF THE DRAWINGS
The above and other objects, features and advantages of the
invention will become more apparent from the following description,
when read in connection with the accompanying drawing, in
which:
FIG. 1 is a fragmentary side view showing a prior-art cap for a
container in the open state;
FIG. 2 is a plan view of the unit of FIG. 1;
FIG. 3 is an exploded fragmentary perspective view showing a first
embodiment of the cap for a container according to the
invention;
FIG. 4 is a plan view of the container shown in FIG. 3;
FIG. 5 is a fragmentary sectional view showing a second embodiment
of the cap for a container in the open state according to the
invention;
FIG. 6 is a fragmentary sectional view to a reduced scale showing
the unit of the second embodiment in the closed state; and
FIG. 7 is a plan view showing the unit of FIG. 5 in the illustrated
state.
DETAILED DESCRIPTION OF TWO EMBODIMENTS OF THE INVENTION
The invention will now be described in conjunction with a first
embodiment thereof with reference to FIGS. 3 and 4.
Reference numeral 10 designates a container body, although it is
shown only partly. Its top wall 11 is provided with, for instance,
a usual outlet nozzle 12 such as a spray nozzle substantially at
the center thereof. A pair of guide projections 13 extend from the
top wall 11 on opposite sides of the outlet nozzle 12. As is
apparent from FIG. 4, the guide projections 13 are arcuate and
extend along the circular edge of the top wall 11 of the container
body 10. The maximum distance between the guide projections 13 is
substantially between points A and A in FIG. 4. The point A is a
neutral point as described hereinafter in detail. Each guide
projection 13 is formed with an arcute outer guide groove 14 (only
one such groove is seen in FIG. 3). Reference numeral 17 designates
a cap provided with a pair of integral resilient members 16
inwardly extending from the top thereof. The resilient members 16
are formed with respective integral protuberances 15 (only one such
protuberance is seen), which constitute resilient coupling means
together with the guide projections 13. Each protuberance 15 can be
elastically snapped in the corresponding guide groove 14 against
the elastic force of the resilient member 16 when fitting the cap
17.
When removing or fitting the cap 17, as the protuberances 15 of the
resilient members 16 pass by the respective points A at the maximum
distance as mentioned above of the guide projections 13, the
engagement of projection 14 in guide groove 14 becomes loose. Thus,
in either case of fitting or removing the cap the movement of the
cap in the reverse direction with respect to the previous movement
is prevented, so that it can be resiliently retained in either
case.
FIGS. 5 to 7 show a second embodiment of the invention. In these
Figures, reference numeral 10 designates a container body which is
shown only partly as in the first embodiment. Its top wall is
provided with a usual outlet nozzle 12, for instance a spray
nozzle, substantially at the center thereof. Projecting from the
top wall 11 is a guide 18, which constitutes a resilient coupling
means. The guide 18 has a substantially W-shaped, curved cross
sectional profile. Its lower guide portion 19 extends from the top
wall 11 and terminates in the peripheral wall 20 of the container
body 10, and only the upper guide portion 21 projects upwardly from
the top wall 11 and terminates in a free end. The upper and lower
guide portions 21 and 19 define an intermediate neutral point 22,
at which the guide is projected toward the peripheral wall 20.
About this neutral point 22, the cap 17 can be held in the open or
closed state to be described hereinafter in detail. As is clearly
shown in FIGS. 5 and 6, the lower guide portion 19 and the
peripheral wall 20 define a recess 23, in which a slightly curved
support arm 24 integral with the peripheral wall 17' of the cap 17
can be received. The free end of the support arm 24 is formed with
an engagement rod 25, which can slide along curved surfaces 26 and
27 of the upper and lower guide portions 21 and 19. The cap 17 is
integrally hinged to the container body 10 through a coupling hinge
28.
To close the cap 17, the cap 17 is rotated in the counterclockwise
direction in FIG. 5 about the fulcrum hinge 28 to cause the
engagement rod 25 at the free end of the support arm 24 to slide
along the curved surface 26 of the upper guide portion 21 toward
the neutral point 22. At this time, the engagement rod 22 is forced
against the elastic force of the upper guide portion 21. As soon as
the rod 25 clears the neutral point 22, it is guided along the
curved surface 27 of the lower guide portion 19 toward the bottom
of the recess. It will thus be seen that since the engagement rod
25 has been guided along the lower guide portion 19 against the
elastic force thereof, the cap 17 is resiliently held closed (as
shown in FIG. 6). To open the cap 17, it is rotated in the opposite
direction to the case of closing it. At this time, the relation
between the engagement rod 25 and the guide portions 19 and 21 is
similar to the case of closing the cap, so will not be described.
When the engagement rod 25 comes near the free end of the upper
guide portion 21, further sliding movement of the rod 25 ie
prevented by the elastic force of the upper guide portion, and the
rod is resiliently held in the final position. Thus the cap 17 is
resiliently held open (as shown in FIGS. 5 and 7).
As has been described in the foregoing, according to the invention
the resilient coupling means coupling the container body and the
cap is not exposed, so that the appearance of the container is not
degraded by otherwise exposed coupling means. Also, the cap can be
positively held closed or open by the elastic force provided by the
resilient coupling means. Further, since the cap is coupled to the
container body through the resilient coupling means any flexible
string can be dispensed with to facilitate the formation of an
economical cap.
It is to be understood that the foregoing embodiments are by no
means limitative but various changes and modifications in the
details of the construction of the container body and the cap may
be made without departing from the claimed scope of the
invention.
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