Coating implements with material supply – Solid material for rubbing contact or support therefor – Including means to advance material
Reexamination Certificate
2001-05-24
2003-04-08
Huson, Gregory (Department: 3751)
Coating implements with material supply
Solid material for rubbing contact or support therefor
Including means to advance material
C401S087000, C401S098000, C401S174000
Reexamination Certificate
active
06543952
ABSTRACT:
TECHNICAL FIELD
The present invention relates to an improvement in a cosmetic container for housing a stick type cosmetic material in such a manner that the material can be fed and a cartridge for the container.
BACKGROUND ART
With regard to a cosmetic container which feeds a stick type cosmetic material contained in a cartridge, such as eyeliner, eyebrow pencil, eye shadow, or lipstick, due to relative rotations of the cartridge and a container body, fore example, there are proposals in Japanese Patent Laid-Open publication No. Sho 60-48706 and Japanese Utility Model Publication No. Hei. 4-30961, and the like which are official gazettes published by the Japanese Patent Office.
Among them, a cosmetic container disclosed in Japanese Patent Laid-Open Publication No. Sho 60-48706 is shown in
FIGS. 11 and 12
.
An inner cylinder
103
which coaxially extends is installed in a front cylinder
102
of a cartridge
101
as one body. A thread cylinder
104
arranged between the inner cylinder
103
and the front cylinder
102
in such a manner that relative rotations can freely be made is connected by spline with a holder section
106
of a container body
105
in such a manner that relative rotations cannot be made. Further, engagement projections
109
formed at a retaining member
108
for retaining a stick type cosmetic material
107
are engaged with both sliding grooves
110
which are formed at the inner cylinder
103
extending in an axial direction and spiral groove
111
which are spirally formed around a shaft of the thread cylinder
104
.
Thus, when the cartridge
101
and the container body
105
are relatively rotated, the inner cylinder
103
and the thread cylinder
104
are relatively rotated and the engagement projections
109
engaged with a spiral groove
111
advance according to the rotations, but the engagement projections
109
cannot rotate because these are also engaged with the sliding grooves
110
which extend in an axial direction. Therefore, the engagement projections
109
move only in an axial direction.
Thus, the retaining member
108
united with the engagement projections
109
moves in a direction of a front end of the front cylinder
102
, and the stick type cosmetic material
107
retained by the retaining member
108
is fed through an opening
112
provide at a front end of the front cylinder
102
.
However, in the cosmetic container disclosed in Japanese Laid-Open Publication No. Sho 60-48706, it is necessary to engage the engagement projections of the retaining member
108
with both the sliding grooves
110
and the spiral groove
111
. Therefore, it is necessary to coaxially pile up the inner cylinder
103
at which the sliding grooves
110
are formed and the thread cylinder
104
at which the spiral groove
111
is formed, whereby a diameter of the cosmetic container becomes large.
A cosmetic container disclosed in Japanese Patent Publication No.
Hei 4-30961 is shown in FIG.
13
.
Sliding grooves
203
are formed on an inner circumferential surface on a front end side of a front cylinder
202
of a cartridge
201
, whereas a spiral cylinder
205
at which a spiral groove
204
is formed is rotatably housed on a rear end side of the front cylinder
202
. With regard to a retaining member
207
which retains a stick type cosmetic material, engagement projections
208
on its front end side are engaged with the sliding grooves
203
and also engagement projections
209
on its base end side are engaged with the spiral groove
204
.
The cartridge
201
is housed in a container body which is not shown in the drawings in such a manner that relative rotations can freely be made, and the spiral cylinder
205
is connected with the container body in such a manner that relative rotations cannot be made.
Due to such constitution, a part of the front cylinder
202
at which the sliding grooves
203
are formed and the spiral cylinder
205
can be arranged in an axial direction and in series and they are not coaxially piled up, thereby enabling the cosmetic container to be thin as a whole.
In the cartridge
201
disclosed in Japanese Patent Publication No. Hei 4-30961, the engagement projections
209
formed at the base end of the retaining member
207
are spirally engaged with the spiral groove
204
provided at the inner circumference of the spiral cylinder
205
, and when the spiral cylinder
205
is rotated, the engagement projections
209
move in an axial direction by a distance equivalent to a stroke of the retaining member
207
and the stick type cosmetic material
206
.
Thus, the spiral groove
204
has to be at least longer in an axial direction than a stroke length of the stick type cosmetic material
206
. However, from a technical point of view, it is difficult to make such a long spiral groove
204
in molding the spiral cylinder
205
.
To be more precise, usually, molding of the spiral cylinder
204
is performed at an outer circumference of a core pin provided at a forming die, and the spiral groove
204
is formed in accordance with the shape of an outer circumferential surface of the core pin. And, the spiral cylinder
205
after molding is removed from the core pin. In this case, if the spiral cylinder
205
is short, it can easily be drawn out from the core pin, but if the spiral cylinder
205
is long, it cannot be detached from the forming die unless the core pin is rotated.
Particularly, in order to simultaneously produce a plurality of spiral cylinders
205
using a single forming die, it is necessary to provide the forming die with a plurality of rotatable core pins. In this case, the forming die becomes complicated and the maintenance is difficult. If the forming die is simplified to have only a single core pin, productive efficiency cannot be increased.
Further, if the stick type cosmetic material
206
is long and narrow, a stroke of the retaining member
207
will be longer, whereby the spiral cylinder
205
will be long and narrow. Thus, it is difficult to form the spiral groove
204
covering the total length of such long and narrow spiral cylinder
205
. This also becomes a cause of the increase of costs of a cosmetic container.
Further, in the case of a cosmetic container, it is preferable for various cartridges for stick type cosmetic materials of various diameters, such as extrafine diameter (for example, approximately 1.5 mm to 2.0 mm) and relatively large diameter (for example, approximately 6 mm to 8 mm in the case of a lipstick or the like) to be applicable to a common container body according to the use. Therefore, it is necessary for cartridges to have structure applicable to stick type cosmetic materials of various diameters.
However, in the cartridge
201
described above, it is not taken into consideration that if a stick type cosmetic material
206
having an extrafine diameter and insufficient hardness is installed, for example, it may be damaged or detached from the retaining member
207
when the retaining member
207
is twisted at the feeding limit of the stick type cosmetic material
206
.
The present invention is made in consideration of the problems described above. An object of the present invention is to provide a cosmetic container which houses a stick type cosmetic material in such a manner that the material can be fed and a cartridge for the container. These are easy to manufacture and assemble at a low cost, have considerable flexibility in design, and are applicable to stick type cosmetic materials having various diameters and hardness.
DISCLOSURE OF THE INVENTION
A cartridge according to the present invention has a front cylinder which feeds a stick type cosmetic material through a front end opening. Further, the cartridge is composed of a cylindrical body coaxially and rotatably connected to the front cylinder, a rod which is inserted in the cylindrical body, a plurality of engagement projections formed at an outer circumference of the rod, a spiral groove which is formed at a part of an inner circumference of the cylindrical body and which the plurality of engagement projections are spi
deVore Peter
Huson Gregory
Rabin & Berdo P.C.
Suzuno Kasei Kabushiki Kaisha
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