U.S. patent application number 12/738169 was filed with the patent office on 2010-09-16 for non-drip cap comprising an elastic means built into a valve.
This patent application is currently assigned to MAITRISE ET INNOVATION. Invention is credited to Daniel De Rosa, Paulo Do Rosario.
Application Number | 20100230376 12/738169 |
Document ID | / |
Family ID | 39431059 |
Filed Date | 2010-09-16 |
United States Patent
Application |
20100230376 |
Kind Code |
A1 |
De Rosa; Daniel ; et
al. |
September 16, 2010 |
NON-DRIP CAP COMPRISING AN ELASTIC MEANS BUILT INTO A VALVE
Abstract
A so-called `non-drip` cap (10) for a soft bottle (12) includes
a base (16) and a top (26) defining a chamber (32) for the
throughflow of a product, in which a stop valve (34) of an outlet
(30) is mobile, the valve being elastically retracted back into the
throughflow chamber (32) by an elastic element (36). The elastic
element (36) includes of a series of at least three flexible lugs
(38) which are regularly angularly distributed and project from a
cylindrical body (40) of the valve (34), the lugs being supported
against a wall of the base (16).
Inventors: |
De Rosa; Daniel; (Louviers,
FR) ; Do Rosario; Paulo; (Louviers, FR) |
Correspondence
Address: |
YOUNG & THOMPSON
209 Madison Street, Suite 500
Alexandria
VA
22314
US
|
Assignee: |
MAITRISE ET INNOVATION
Val De Rueil
FR
|
Family ID: |
39431059 |
Appl. No.: |
12/738169 |
Filed: |
October 16, 2008 |
PCT Filed: |
October 16, 2008 |
PCT NO: |
PCT/EP08/63931 |
371 Date: |
May 3, 2010 |
Current U.S.
Class: |
215/228 |
Current CPC
Class: |
B65D 47/2068
20130101 |
Class at
Publication: |
215/228 |
International
Class: |
B65D 51/00 20060101
B65D051/00 |
Foreign Application Data
Date |
Code |
Application Number |
Oct 17, 2007 |
FR |
07/07262 |
Claims
1. A "non-drip" cap (10) for a deformable bottle (12) containing a
cosmetic, pharmaceutical, industrial or food product in liquid or
creamy form, having: an approximately tubular base (16) which is
intended to be fastened in a sealed manner to a complementary
tubular neck (14) of the bottle (12), and a "lower" transverse face
(22) of which has at least one inlet orifice (24) communicating
with the neck (14) of the bottle (12), an approximately tubular lid
(26) which is held on the base (16) and an "upper" transverse face
(28) of which has at least one product outlet orifice (30), the lid
(26) and the base (16) forming in a sealed manner a chamber (32),
interposed between the inlet orifice (24) in the base (16) and the
product outlet orifice (30), for the passage of the product, a
shut-off valve (34), coaxial with the outlet orifice (30), being
mounted in a sliding manner in the passage chamber (32) between a
closed position in which it shuts off the product outlet orifice
(30) and an open position in which it is set back from the product
outlet orifice (30) to enable the product to pass through, and the
shut-off valve (34) being returned elastically into the passage
chamber (32) by an elastic means (36) against the product outlet
orifice (30), so that the shut-off valve (34) can move from its
closed position into its open position under the pressure of the
product when pressure is exerted on the deformable bottle (12), and
the shut-off valve (34) can return from its open position into its
closed position when the pressure on the deformable bottle (12) is
released, characterized in that the elastic means (36) consists of
a series of at least three flexible tabs (38) which are distributed
angularly in a regular manner and formed integrally starting from a
cylindrical body (40) of the valve (34), and which are intended to
bear against a wall (42) of the base (16) in order for the valve
(34) to return elastically.
2. The cap (10) as claimed in claim 1, characterized in that the
base (16) has an "inlet" duct (44) which is coaxial with the neck
(14) of the bottle (12), with the cylindrical body (40) of the
valve (34) and with the outlet orifice (30), communicates with the
inlet orifice (24), and the wall (42) of which holds the flexible
tabs (38) of the elastic means (36).
3. The cap (10) as claimed in claim 2, characterized in that the
valve (34) is formed integrally with the base (16), each flexible
tab (38) of the elastic means (36) having an upper end (46)
connected to the valve (34) and a lower end (48) connected to an
inner edge of the wall (42) of the inlet duct (44).
4. The cap (10) as claimed in claim 2, characterized in that the
valve (34) is independent of the base (16), each flexible tab (38)
having an upper end (46) connected to the valve and a lower end
(48) connected to a bearing ring (50) which is intended to bear
against a transverse shoulder face (52) protruding from an inner
edge of the wall (42) of the inlet duct.
5. The cap (10) as claimed in claim 2, characterized in that the
valve (34) has a lower frustoconical bearing surface (54) facing
the inlet orifice (24) and intended to aid the passage of the
product.
6. The cap (10) as claimed in claim 1, characterized in that the
base (16) has an "inlet" duct (44) which is coaxial with the neck
(14) of the bottle (12), with the cylindrical body (40) of the
valve (34) and with the outlet orifice (30), communicates with the
inlet orifice (24), and coaxially holds a tubular housing (47)
which guides the valve (34) in a sliding manner, and against a
lower wall (42) of the bottom of which bear the flexible tabs (38)
of the valve (34).
7. The cap (10) as claimed in claim 1, characterized in that the
flexible tabs (38) are wound helically around the axis of the valve
(34).
8. The cap (10) as claimed in claim 2, characterized in that the
valve (34) has an upper frustoconical bearing surface (56) which is
intended to engage with a frustoconical seat (58) arranged around a
hole in the lid (26) forming the outlet orifice (30), said
frustoconical bearing surface (56) being surmounted by a stud (60)
intended to penetrate into said hole (30) in order for the outlet
orifice (30) of the lid (26) to be shut off in a sealed manner by
the valve (34).
9. The cap (10) as claimed in claim 1, characterized in that the
lid (26) is mounted in a movable manner coaxially with the base
(16) and can be locked: in a bottom position in which the distance
between the lid (26) and the base (16) is reduced such that the
elastic tabs (38) of the valve (34) are highly stressed such that
the valve (34) permanently shuts off the outlet orifice (30), or
else in a top position in which the distance between the lid (26)
and the base (16) is increased such that the elastic tabs (38) of
the valve (34) are permanently weakly stressed such that the valve
(34) only shuts off the outlet orifice (30) when there is no
pressure from a liquid or creamy product which can stress the valve
(34) toward its open position against the return force of the
elastic tabs (38).
10. The cap (10) as claimed in claim 9, characterized in that the
tubular lid (26) has an inside diameter corresponding to the
outside diameter of the base (16) and in that the lid (26) has at
least one radial finger (62) which extends from an inner edge (64)
of its tubular wall and is held in a helical slot (66) formed on an
outer edge (68) of the tubular wall of the base (16), said slot
(66) having, close to its end (71) corresponding to the bottom
position of the lid (26), a protrusion (70) which extends toward
the inside of the slot (66) and is intended to enable the finger
(62) to be locked at said end (71) of the slot (66), in order for
the lid (26) to move between its top and bottom positions by
rotation and to be locked in its bottom position.
11. The cap (10) as claimed in claim 2, characterized in that the
lid has an inner tubular bearing surface (72) having an outside
diameter corresponding to the inside diameter of the inlet duct
(44), in order to guide the lid (26) with respect to the base (16)
and to delimit the chamber (32) for the passage of the product.
12. The cap (10) as claimed in claim 8, characterized in that it
has venting means associated with a flexible bottle (12).
13. The cap (10) as claimed in claim 12, characterized in that the
venting means of the bottle comprise a predetermined calibration of
the flexible tabs (38) of the elastic means (36) which is intended
to keep the shut-off valve (34) in its open position as soon as a
predetermined negative air pressure obtains in the bottle (12) and
to return the shut-off valve (34) into its closed position as soon
as said negative pressure stops.
14. The cap (10) as claimed in claim 12, characterized in that the
venting means of the bottle (12) have at least one counterbore (53)
which is formed on the perimeter of the hole of the orifice (30) in
the lid (26) and which leads into the frustoconical seat (58) of
the lid (26).
15. The cap (10) as claimed in claim 12, characterized in that the
venting means of the bottle (12) have at least: an angular indexing
means (55) for rotating the valve (34) in its tubular housing, at
least one first vertically oriented boss carried by an "upper"
transverse wall (49) of the lid (26), which wall, when the lid is
in its top position, is able to engage with a second vertically
oriented boss (59) carried by an upper face (61) of the valve (34)
in order to cause a predetermined movement of the valve (34) toward
its open position so as to separate the upper frustoconical bearing
surface (56) from the frustoconical seat (58) in order to vent the
bottle (12).
16. The cap as claimed in claim 15, characterized in that the
passage of the lid (26) from its bottom position to its top
position corresponds to a rotation of said lid through 90 degrees
and in that the lid (26) has two first bosses arranged angularly at
180 degrees with respect to one another.
17. The cap as claimed in claim 15, characterized in that the
angular indexing means for rotating the valve (34) in its tubular
housing has a square profile (55) which extends from the lower
bottom wall (42) of the housing (47) and is held in a complementary
cavity (65) formed in the body of the valve (34).
18. The cap (10) as claimed in claim 1, characterized in that it
has venting means associated with a flexible bottle (12).
19. The cap (10) as claimed in claim 18, characterized in that the
venting means of the bottle comprise a predetermined calibration of
the flexible tabs (38) of the elastic means (36) which is intended
to keep the shut-off valve (34) in its open position as soon as a
predetermined negative air pressure obtains in the bottle (12) and
to return the shut-off valve (34) into its closed position as soon
as said negative pressure stops.
20. The cap as claimed in claim 16, characterized in that the
angular indexing means for rotating the valve (34) in its tubular
housing has a square profile (55) which extends from the lower
bottom wall (42) of the housing (47) and is held in a complementary
cavity (65) formed in the body of the valve (34).
Description
[0001] The invention relates to a "non-drip" cap for a deformable
bottle.
[0002] The invention relates more particularly to a "non-drip" cap
for a deformable bottle containing a cosmetic, pharmaceutical,
industrial or food product in liquid or creamy form, having: [0003]
an approximately tubular base which is intended to be fastened in a
sealed manner to a complementary tubular neck of the bottle, and a
"lower" transverse face of which has at least one inlet orifice
communicating with the neck of the bottle, [0004] an approximately
tubular lid which is held on the base and an "upper" transverse
face of which has at least one product outlet orifice, [0005] the
lid and the base forming in a sealed manner a chamber, interposed
between the inlet orifice in the base and the product outlet
orifice, for the passage of the product, [0006] a shut-off valve,
coaxial with the outlet orifice, being mounted in a sliding manner
in the passage chamber between a closed position in which it shuts
off the product outlet orifice and an open position in which it is
set back from the product outlet orifice to enable the product to
pass through, and [0007] the shut-off valve being returned
elastically into the passage chamber by an elastic means against
the product outlet orifice, so that the shut-off valve can move
from its closed position into its open position under the pressure
of the product when pressure is exerted on the flexible bottle, and
the shut-off valve can return from its open position into its
closed position when the pressure on the flexible bottle is
released.
[0008] Numerous examples of caps of this type are known.
[0009] Conventionally, the elastic means, which is intended to
return the shut-off valve, consists of a separate flexible
diaphragm which is perforated to enable the liquid or creamy
product to pass through, or consists of a metal helical return
spring which is interposed between the base and the valve.
[0010] The separate flexible diaphragm or the metal return spring
thus constitute separate elements which increase the complexity of
mounting a conventional non-drip cap.
[0011] In particular, since these return means are intended to
engage with the valve, it is necessary to provide means for
centering the separate diaphragm or the separate spring with
respect to the valve, and means for centering the separate
diaphragm or the separate spring at least with respect to the
base.
[0012] In addition, the use of a separate diaphragm or of a
separate spring in such a non-drip cap adds considerably to the
manufacturing costs of such a cap.
[0013] The invention remedies this drawback by providing a non-drip
cap having an elastic return means integrated with the valve.
[0014] To this end, the invention provides a non-drip cap of the
above-described type, which is characterized in that the elastic
means consists of a series of at least three flexible tabs which
are distributed angularly in a regular manner and formed integrally
starting from a cylindrical body of the valve, and which are
intended to bear against a wall of the base in order for the valve
to return elastically.
[0015] According to other features of the invention: [0016] the
base has an "inlet" duct which is coaxial with the neck of the
bottle, with the cylindrical body of the valve and with the outlet
orifice, communicates with the inlet orifice, and the wall of which
holds the flexible tabs of the elastic means, [0017] the valve is
formed integrally with the base, each flexible tab of the elastic
means having an upper end connected to the valve and a lower end
connected to an inner edge of the wall of the inlet duct, [0018]
the valve is independent of the base, each flexible tab having an
upper end connected to the valve and a lower end connected to a
bearing ring which is intended to bear against a transverse
shoulder face protruding from an inner edge of the wall of the
inlet duct, [0019] the valve has a lower frustoconical bearing
surface facing the inlet orifice and intended to aid the passage of
the product, [0020] the flexible tabs are wound helically around
the axis of the valve, [0021] the base has an "inlet" duct which is
coaxial with the neck of the bottle, with the cylindrical body of
the valve and with the outlet orifice, communicates with the inlet
orifice, and coaxially holds a tubular housing in which the valve
slides, and against a lower wall of the bottom of which bear the
flexible tabs of the valve, [0022] the valve has an upper
frustoconical bearing surface which is intended to engage with a
frustoconical seat arranged around a hole in the lid forming the
outlet orifice, said frustoconical bearing surface being surmounted
by a stud intended to penetrate into said hole in order for the
outlet orifice of the lid to be shut off in a sealed manner by the
valve, [0023] the lid is mounted in a movable manner coaxially with
the base and can be locked: [0024] in a bottom position in which
the distance between the lid and the base is reduced such that the
elastic tabs of the valve are highly stressed such that the valve
permanently shuts off the outlet orifice, or else [0025] in a top
position in which the distance between the lid and the base is
increased such that the elastic tabs of the valve are permanently
weakly stressed such that the valve only shuts off the outlet
orifice when there is no pressure from a liquid or creamy product
which can stress the valve toward its open position against the
return force of the elastic tabs, [0026] the tubular lid has an
inside diameter corresponding to the outside diameter of the base
and the lid has at least one radial finger which extends from an
inner edge of its tubular wall and is held in a helical slot formed
on an outer edge of the tubular wall of the base, said slot having,
close to its end corresponding to the bottom position of the lid, a
protrusion which extends toward the inside of the slot and is
intended to enable the finger to be locked at said end of the slot,
in order for the lid to move between its top and bottom positions
by rotation and to be locked in its bottom position, [0027] the lid
has an inner tubular bearing surface having an outside diameter
corresponding to the inside diameter of the inlet duct, in order to
guide the lid with respect to the base and to delimit the chamber
for the passage of the product, [0028] the cap has venting means of
the bottle, [0029] the venting means of the bottle comprise a
predetermined calibration of the flexible tabs of the elastic means
which is intended to keep the shut-off valve in its open position
as soon as a predetermined negative air pressure obtains in the
bottle and to return the shut-off valve into its closed position as
soon as said negative pressure stops, [0030] the venting means of
the bottle have at least one counterbore which is formed on the
perimeter of the hole of the orifice in the lid and which leads
into the frustoconical seat of the lid, [0031] the venting means of
the bottle have at least an angular indexing means for rotating the
valve in its tubular housing, and at least one first vertically
oriented boss carried by the "upper" transverse face of the lid,
which face, when the lid is in its top position, is able to engage
with a second vertically oriented boss carried by an upper face of
the valve in order to cause a predetermined movement of the valve
toward its open position so as to separate the upper frustoconical
bearing surface from the frustoconical seat in order to vent the
bottle, [0032] the passage of the lid from its bottom position to
its top position corresponds to a rotation of said lid through 90
degrees and the lid has two first bosses arranged angularly at 180
degrees with respect to one another, [0033] the angular indexing
means for rotating the valve in its tubular housing has a square
profile which extends from the lower bottom wall of the housing and
is held in a complementary cavity formed in the body of the
valve.
[0034] Further features and advantages of the invention will become
apparent from reading the following detailed description, for the
understanding of which reference is made to the appended drawings,
in which:
[0035] FIG. 1 is a perspective view of a non-drip cap according to
a first embodiment of the invention;
[0036] FIG. 2 is a view in axial cross section of the non-drip cap
of FIG. 1 shown with its lid in the bottom position;
[0037] FIG. 3 is a view in axial cross section of the non-drip cap
of FIG. 1 shown with its lid in the top position and the valve in a
closed position;
[0038] FIG. 4 is a view in axial cross section of the non-drip cap
of FIG. 1 shown with its lid in the top position and the valve in
an open position;
[0039] FIG. 5 is a perspective view of a non-drip cap according to
a second embodiment of the invention;
[0040] FIG. 6 is a view in axial cross section of the non-drip cap
of FIG. 5 shown with its lid in the bottom position;
[0041] FIG. 7 is a view in axial cross section of the non-drip cap
of FIG. 5 shown with its lid in the top position and the valve in a
closed position;
[0042] FIG. 8 is a view in axial cross section of the non-drip cap
of FIG. 5 shown with its lid in the top position and the valve in
an open position;
[0043] FIG. 9 is a view in axial cross section of a non-drip cap
according to a third embodiment of the invention shown with its lid
in the bottom position;
[0044] FIG. 10 is a view in axial cross section of the non-drip cap
of FIG. 9 shown with its lid in the top position and the valve in a
closed position;
[0045] FIG. 11 is a view in axial cross section of the non-drip cap
of FIG. 9 shown with its lid in the top position and the valve in
an open position;
[0046] FIG. 12 is an exploded perspective view of a valve
associated with a fourth embodiment of the invention;
[0047] FIG. 13 is a perspective view of a lid associated with the
fourth embodiment of the invention;
[0048] FIG. 14 is a view in axial cross section of a non-drip cap
according to the fourth third embodiment of the invention shown
with its lid in the bottom position;
[0049] FIG. 15 is a view in axial cross section of the non-drip cap
of FIG. 14 shown with its lid in the top position and the valve in
a closed position; and
[0050] FIG. 16 is a view in axial cross section of the non-drip cap
of FIG. 14 shown with its lid in the top position and the valve in
an open position.
[0051] In the following description, identical reference numerals
denote identical parts or parts having similar functions.
[0052] First, second, third and fourth embodiments of a "non-drip"
cap 10 are shown in the figures.
[0053] In a known manner, the cap 10 is intended to equip a
deformable bottle 12 for a cosmetic, pharmaceutical, industrial or
food product in liquid or creamy form.
[0054] It will thus be understood that the field of application of
the cap 10 is highly varied.
[0055] The deformable bottle 12 may in particular be a rigid
bottle, one wall of which can move. This type of bottle is widely
known in the prior art and is used for example to contain
toothpastes.
[0056] In such a bottle, the volume of the bottle varies as it is
used, since the movement of the movable wall accompanying the
discharge of the product. The volume of the bottle is in this case
always entirely filled with product.
[0057] The bottle 12 may also be a flexible bottle which needs to
be pressed in order for product to be discharged.
[0058] In such a bottle, the volume of the bottle generally stays
the same, the product discharged from the bottle being replaced by
air when the pressure exerted on the bottle is released.
[0059] In the rest of the present description, the invention will
be explained with reference to a flexible bottle, but it will be
understood that this arrangement does not limit the invention.
[0060] The bottle 12 has a neck 14. In a known manner, the cap has
an approximately tubular base 16 which is intended to be fastened
in a sealed manner to the complementary tubular neck 14 of the
bottle 12.
[0061] By way of example and in a manner not limiting the
invention, the neck 14 of the bottle 12 has threads 18 intended to
take a complementary internal thread 20 of the base 16.
[0062] Of course, as an alternative, the base 16 could be engaged
or snap-fastened onto the neck of a bottle 16 which has no
threads.
[0063] A "lower" transverse face 22 of the base 16 has at least one
inlet orifice 24 communicating with the neck 14 of the bottle
12.
[0064] In a known manner, the cap 10 also has an approximately
tubular lid 26 which is held on the base 16 and an "upper"
transverse face 28 of which has at least one product outlet orifice
30.
[0065] Moreover, the lid 26 and the base 16 form in a sealed manner
a chamber 32, interposed between the inlet orifice 24 in the base
16 and the product outlet orifice 30, for the passage of the
product.
[0066] In a known manner, a shut-off valve 34, coaxial with the
outlet orifice 30, is mounted in a sliding manner in the passage
chamber 32 between a closed position, shown in FIGS. 3, 7, 10 and
15, in which it shuts off the product outlet orifice 30 of the lid
26 and an open position, shown in FIGS. 4, 8, 11 and 16, in which
it is set back from the product outlet orifice 30 to enable the
product to pass through.
[0067] This valve 34 is returned elastically into the passage
chamber 32 by an elastic means 36 against the product outlet
orifice 30, so that the shut-off valve 34 can move from its closed
position into its open position under the pressure of the product
when pressure is exerted on the flexible bottle 12, and the
shut-off valve 34 can return from its open position into its closed
position when the pressure on the flexible bottle 12 is
released.
[0068] In accordance with the invention, the elastic means 36
consists of a series of at least three flexible tabs 38 which are
distributed angularly in a regular manner and formed integrally
starting from a cylindrical body 40 of the valve 34, and which are
intended to bear against a wall 42 of the base 16 in order for the
valve 34 to return elastically.
[0069] In the three preferred embodiments of the invention, as
illustrated in particular in FIGS. 1 and 5, the flexible tabs 38
are wound helically around the axis of the valve. This
configuration enables the provision of maximum flexibility of the
tabs 38 while reducing the space requirement.
[0070] In the first and second embodiments of the invention, the
base 16 has an "inlet" duct 44 which is coaxial with the neck 14 of
the associated bottle 12, with the cylindrical body 40 of the valve
34 and with the outlet orifice 30, communicates with the inlet
orifice 24, and the wall 42 of which holds the flexible tabs 38 of
the elastic means 36.
[0071] In a first embodiment which is shown in FIGS. 1 to 4 and
more particularly in FIG. 1, the valve 34 is formed integrally with
the base 16, each flexible tab of the elastic means 36 having an
upper end 46 connected to the valve 34 and a lower end 48 connected
to an inner edge of the wall 42 of the inlet duct 44.
[0072] As an alternative, in a second embodiment of the invention
which is shown in FIGS. 5 to 8 and more particularly in FIG. 5, the
valve 34 is independent of the base 16, each flexible tab 38 having
an upper end 46 connected to the valve 34 and a lower end 48
connected to a bearing ring 50 which is intended to bear against a
transverse shoulder face 52 protruding from an inner edge of the
wall 42 of the inlet duct 44.
[0073] In both of these embodiments of the invention, it will be
noted that the valve 34 has a lower frustoconical bearing surface
54 facing the inlet orifice 24 and intended to aid the passage of
the product.
[0074] It will be noted that, in particular in these two
embodiments, the valve 34 has, in its upper part corresponding to
the frustoconical bearing surface 54, a larger projected surface
than that of its lower part located under the tabs 38, such that
any pressure on the bottle subjects the valve 34 to greater
pressure in its upper part than in its lower part, thereby causing
it to move upward. Since this constructive arrangement forms part
of the design of the valve and is widely known in the prior art, it
will not be described more fully.
[0075] In the first embodiment, the inlet orifice 24 is simply
delimited by the duct 44.
[0076] In the second embodiment, as illustrated in FIG. 5, the
inlet orifice 24 consists of at least one slot formed in the
transverse shoulder face 52. In particular, the transverse face 52
may have two crescent-shaped inlet orifices 24.
[0077] In the third and fourth embodiments of the invention, which
are shown in FIGS. 9 to 11 and 14 to 16, the base 16 similarly has
an "inlet" duct 44 which is coaxial with the neck 14 of the bottle
12, with the cylindrical body 40 of the valve 34 and with the
outlet orifice 30, and communicates with the inlet orifice 24.
[0078] In a similar manner to the preceding embodiments, the valve
34 has flexible tabs 38, the upper ends 46 of which are formed
integrally with the cylindrical body 40 of the valve 34.
[0079] The inlet duct 44 coaxially holds a tubular housing 47 which
guides the cylindrical valve 34 in a sliding manner, and against a
lower bottom wall 42 of which bear the lower ends 48 of the
flexible tabs 38 of the valve 34.
[0080] The body of the valve could be approximately tubular and
slide outside the tubular housing 47. However, for reasons of
compactness, the valve 34 preferably slides inside the housing
47.
[0081] It will thus be understood that, in the preferred embodiment
of the invention, the housing 47 is shut off by the lower bottom
wall 42 and that the valve can protrude out of the housing 47 only
through an upper opening 51 in the housing 47. This configuration
ensures that the liquid or creamy product only stresses the upper
part of the valve 34 when pressure is exerted on the bottle 12, in
order to open it.
[0082] It will also be understood that, preferably, the housing 47
is formed integrally with the base 16.
[0083] Moreover, the valve 34 has an upper frustoconical bearing
surface 56 which is intended to engage with a frustoconical seat 58
arranged around a hole in the lid forming the outlet orifice 30,
said frustoconical bearing surface 56 being surmounted by a stud 60
intended to penetrate into said hole 30 in order for the outlet
orifice 30 of the lid to be shut off in a sealed manner by the
valve 34.
[0084] Moreover, the cap 10 advantageously comprises means intended
to selectively enable the passage of the product.
[0085] To this end, as illustrated in FIGS. 2 to 4 and 6 to 11,
whatever the embodiment of the invention, the lid 26 is mounted in
a movable manner coaxially with the base 16 and it can be locked:
[0086] in a bottom position, shown in FIGS. 2, 6, 9 and 14, in
which the distance between the lid 26 and the base 16 is reduced
such that the elastic tabs 38 of the valve 34 are highly stressed
such that the valve 34 permanently shuts off the outlet orifice 30,
or else [0087] in a top position, shown in FIGS. 3, 4, 7, 8, 10,
11, 15 and 16, in which the distance between the lid 26 and the
base 16 is increased such that the elastic tabs 38 of the valve are
permanently weakly stressed such that the valve 34 only shuts off
the outlet orifice when there is no pressure from a liquid or
creamy product which can stress the valve 34 toward its open
position against the return force of the elastic tabs 38.
[0088] In order for the lid 26 to move with respect to the base 16
and to be locked in each of the two abovementioned positions, as
illustrated in FIGS. 3, 4, 7, 8, 10, 11, 15 and 16, the tubular lid
26 has an inside diameter corresponding to the outside diameter of
the base 16 and the lid 26 has at least one radial finger 62 which
extends from an inner edge 64 of its tubular wall and is held in a
helical slot 66 formed on an outer edge 68 of the tubular wall of
the base.
[0089] As illustrated more particularly in FIGS. 1 and 5, the slot
66 has, close to its end 71 corresponding to the bottom position of
the lid, a protrusion 70 which extends toward the inside of the
slot 66 and is intended to enable the finger 62 to be locked at
said end 71 of the slot 66, in order for the lid 26 to move and to
be locked in its bottom position.
[0090] Finally, it will be noted that the lid 26 has an inner
tubular bearing surface 72 having an outside diameter corresponding
to the inside diameter of the inlet duct 44, in order to guide the
lid 26 with respect to the base 16 and to delimit the chamber 32
for the passage of the product.
[0091] In the first and second embodiments of the invention, the
inner tubular bearing surface 72 holds the valve 34.
[0092] Another particularly advantageous feature of the invention,
which relates more particularly to the case of a flexible bottle
12, is that the cap has venting means of said flexible bottle
12.
[0093] According to one embodiment (not shown), the cap 10 may
consist of a cap 10 of the type described with reference to the
first, second and third embodiments of the invention, with the
difference that the venting means of the bottle comprise a
predetermined calibration of the flexible tabs 38 of the elastic
means 36. This calibration is intended to keep the shut-off valve
34 in its open position as soon as a predetermined negative air
pressure obtains in the bottle 12 and to return the shut-off valve
34 into its closed position as soon as said negative pressure
stops.
[0094] The venting means of the flexible bottle can consist of
particular mechanical arrangements which have been shown with
reference to FIGS. 12 to 16, these figures showing a cap operating
according to the same principle as the cap 10 described with
reference to FIGS. 9 to 11.
[0095] In a general manner, the venting means of the bottle 12 have
at least one counterbore 53 which is formed on the perimeter of the
hole of the orifice 30 in the lid 26 and which leads into the
frustoconical seat 58. This counterbore 53, which communicates with
the passage chamber 32, forms a vent for venting the bottle 12.
[0096] This configuration, which is shown in FIGS. 13 to 16, can
also be applied to any cap 10 of the type described hereinabove
with reference to the first, second and third embodiments of the
invention.
[0097] The particular architecture of the cap 10 according to the
third embodiment of the invention nevertheless enables the
provision of a fourth embodiment enabling the ventilation of the
bottle 12 to be improved and to enable a greater amount of air to
pass through the counterbore 53.
[0098] In this configuration, which, for reference, includes most
of the constructive arrangements of the cap according to the third
embodiment of the invention, the venting means of the bottle 12
have at least: [0099] an angular indexing means 55 for rotating the
valve 34 in its tubular housing, [0100] at least one first
vertically oriented boss 57 carried by an "upper" transverse wall
49 of the lid 26, which wall, when the lid 26 is in its top
position, is able to engage with a second vertically oriented boss
59 carried by an upper face 61 of the valve 34 in order to cause a
predetermined movement of the valve 34 toward its open position so
as to separate the upper frustoconical bearing surface 56 from the
frustoconical seat 58 in order to vent the bottle 12, as shown in
FIG. 15.
[0101] In the preferred embodiment of the invention, the passage of
the lid 26 from its bottom position to its top position corresponds
to a rotation of said lid 26 through 90 degrees and the lid 26 has
two first bosses 57 arranged angularly at 180 degrees with respect
to one another. This configuration makes it possible to mount the
lid 26 on the base 16 without worrying about the orientation of
said lid 26, and to ensure that the second boss 59 is stressed by
one of the first bosses 57.
[0102] In the preferred embodiment of the invention, the angular
indexing means for rotating the valve 34 in its tubular housing has
a square profile 55 which extends from the lower bottom wall 42 of
the housing 47 and is held in a complementary cavity 65 formed in
the body of the valve 34. This configuration ensures the proper
orientation of the second boss 59 in order for it to be stressed by
a first boss 57, as shown in FIG. 15.
[0103] Thus, in the bottom position of the lid 26, shown in FIG.
14, no first boss 57 is stressing a second boss 59. The valve 34 is
thus closed.
[0104] As soon as the lid 26 is pivoted, one of the first bosses 57
stresses the second boss 59 and the upper frustoconical bearing
surface 56 of the valve 34 is separated from the frustoconical seat
58 so as to vent the bottle 12, as shown in FIGS. 15 and 16.
[0105] The product outlet, shown in FIG. 16, is carried out in a
similar manner to the preceding embodiments.
[0106] The invention thus provides a non-drip cap 10 made of a
limited number of components, which can therefore be mass-produced
at low cost.
* * * * *