Coating implements with material supply – Solid material for rubbing contact or support therefor – Including means to advance material
Reexamination Certificate
2000-06-22
2001-10-30
Walczak, David J. (Department: 3751)
Coating implements with material supply
Solid material for rubbing contact or support therefor
Including means to advance material
C401S075000, C401S088000
Reexamination Certificate
active
06309121
ABSTRACT:
TECHNICAL FIELD
The present invention relates to an improvement in a stick type cosmetic material feeding container for retaining a stick type cosmetic material of thin diameter (especially, eyeliner, eyebrow, lip liner, or the like) by a plurality of claws by enabling secure and appropriate retaining of the stick type cosmetic material having various physical properties according to the respective physical properties.
BACKGROUND ART
A stick type cosmetic material is made by mixing an oil with a pigment or a dye and hardening them and its characteristics, such as hardness, viscosity, or the like, vary depending on the type. Thus, various shapes of stick type cosmetic material feeding containers which can properly house a cosmetic material without damaging it by coping with such various characteristics have been proposed.
For example, in the case of a stick type cosmetic material having a large cross sectional area and strength, such as lipstick of large diameter, concealer, or the like, a lower end side of the stick type cosmetic material is retained in a cylindrical core chuck which is a cosmetic material retaining section. In this case, generally, the ratio of length of a part of the stick type cosmetic material which is retained at the core chuck to total length of the stick type cosmetic material is approximately 1 to 2 through 1 to 3.
On the other hand, in the case of a stick type cosmetic material of thin diameter, the ratio of length of a part of the stick type cosmetic material retained at the core chuck to total length of the stick type cosmetic material is, for example, approximately 1 to 5 through 1 to 6. However, such a stick type cosmetic material which is weak and has a thin diameter is easy to break, come off, or be damaged during the feeding operation.
In order to prevent such a stick type cosmetic material from breaking, coming off, or being damaged, for example, a stick type cosmetic material feeding container as shown in
FIG. 20
has been proposed.
The stick type cosmetic material feeding container has a cylindrical core chuck
105
. The stick type cosmetic material (not shown in the drawings) is inserted in the core chuck
105
and retained in a front cylinder
102
in such a manner that the cosmetic material can be fed. A step section
111
having a thickness equivalent to a thickness of the core chuck
105
is formed at an upper end of the front cylinder
102
. Thus, an inside diameter of an upper end part (a part on the side of an opening hole
110
) of the front cylinder
102
becomes small by a portion equivalent to a thickness of the core chuck
105
, and the stick type cosmetic material is retained by the upper end part from right and left.
However, in the container shown in
FIG. 20
, there is a space equivalent to the thickness of the core chuck
105
between the stick type cosmetic material and an inner circumferential surface of the front cylinder
102
at a part of the front cylinder
102
which is under the step section
111
. Therefore, especially in the case of a slender stick type cosmetic material, it is sometimes warped and broken due to a change of temperature or moisture, a shock, or the like.
In order to solve such problems, a stick type cosmetic material feeding container
201
as shown in
FIGS. 21 through 23
is disclosed in Japanese Utility Model Laid-Open Publication No. Sho 60-33920 published by the Japanese Patent Office. Further, Japanese Patent Publication No. Hei 3-71121 discloses a stick type cosmetic material feeding container
301
as shown in FIG.
24
.
In both of these stick type cosmetic material feeding containers
201
and
301
, a plurality of claws
108
constitute a core chuck and a stick type cosmetic material A is retained by these claws
108
. Further, a plurality of sliding grooves
106
is formed on an inner circumferential surface of the front cylinder
102
and the plurality of claws
108
are housed in these sliding grooves
106
. Thus, the stick type cosmetic material A is supported from the side by parts other than the sliding grooves
106
provided on the inner circumferential surface of the front cylinder
102
. Consequently, it is possible to prevent the stick type cosmetic material A from being bent.
However, the claws
108
which are adopted in such stick type cosmetic material feeding containers
201
and
301
are easy to be deformed and therefore when the stick type cosmetic material A is inserted, the claws
108
are occasionally spread outward as shown in
FIGS. 23 and 24
.
To be more precise, usually the claws
108
are rectangular pieces having elasticity and due to the elasticity, the stick type cosmetic material A is installed in such a manner that the cosmetic material is fastened. By making the claws
108
elastic as described above, the weak stick type cosmetic material A can be retained in such a manner that the cosmetic material is wrapped without being damaged. When the stick type cosmetic material A is supported by the claws
108
, it will be ideal if the shape of the claws
108
is corresponding to the stick type cosmetic material A as shown in
FIGS. 21 and 22
.
However, actually the claws
108
are spread outward as shown in
FIGS. 23 and 24
due to pressure applied at the time of inserting the stick type cosmetic material A. Therefore, it is possible for the stick type cosmetic material A to separate from the core chuck
105
merely by a slight shock which may be applied resulting from a fall, a consecutive oscillation, or the like.
For this problem, if strength of the claws
108
is enhanced by taking countermeasures such that the thickness of the claws is increased and the cross section is enlarged, the claws will become hard to be deformed. However, the thickness of the claws
108
is increased and flexibility of the front cylinder in design is spoiled.
The present invention is made in consideration of such problems. An object of the present invention is to provide a stick type cosmetic material feeding container which stably and properly retains a stick type cosmetic material using claws according to physical properties of the stick type cosmetic material.
DISCLOSURE OF THE INVENTION
In the present invention, a stick type cosmetic material feeding container comprising: a front cylinder which houses a stick type cosmetic material in such a manner that the stick type cosmetic material can advance and retreat; a container body which is rotatably connected with the front cylinder; a cosmetic material retaining section composed of a plurality of claws which retain the stick type cosmetic material in such a manner that the stick type cosmetic material is sandwiched; and a plurality of sliding grooves which are formed on an inner circumferential surface of the front cylinder and in which the claws are housed, wherein the stick type cosmetic material is fed up or fed down by advancement or retreat of the cosmetic material retaining section resulting from rotations of the front cylinder and the container body; characterized in that a sliding contact section is provided on at least either an outer circumferential surface of the respective claws or a sliding contact surface of the respective sliding grooves; and each of the claws is always in contact with the sliding contact surface via the sliding contact section when the stick type cosmetic material is supported between the claws.
Thus, each of the claws is supported by the sliding contact surface via the sliding contact section, and therefore when the stick type cosmetic material is installed between the claws, the claws are not spread outward (toward the sliding contact surface side) more than planned by design. Since a deformation of the claws is effectively prevented as described above, the stick type cosmetic material is stably retained and can stably be fed up or fed down.
Further, in the present invention, the sliding contact section is a projection which is formed on an outer circumferential surface of each of the claws. Thus, a contact area of the projection and the sliding contact surface which covers only a tip of the proje
Rabin & Berdo P.C.
Suzuno Kasei Kabushiki Kaisha
Walczak David J.
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