Toilet – Toilet kit – Including cosmetic applicator
Reexamination Certificate
2001-05-04
2003-05-06
Wilson, John J. (Department: 3732)
Toilet
Toilet kit
Including cosmetic applicator
C132S218000, C401S068000, C401S075000
Reexamination Certificate
active
06557563
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a stick type cosmetic material feeding container which feeds out a stick type cosmetic material for use.
2. Description of the Related Art
Japanese Patent Laid-Open Publication No. Hei 11-146808 (JPA11-146808) shows a typical method for moving a stick type cosmetic material forward and backward by rotatably connecting a front cylinder and a container body, retaining the stick type cosmetic material at a cosmetic material retaining section which is provided at a tip of a push rod internally installed, and rotating the front cylinder and the container body described above. This method is shown as a conventional example in
FIGS. 8 and 9
.
In the stick type cosmetic material feeding container shown in
FIG. 8
, a front cylinder
231
and a container body cylinder
241
are connected coaxially and rotatably. A push rod
251
is installed therein. A cavity section
253
is provided at a tip of the push rod
251
, and a stick type cosmetic material
233
is retained at the cavity section
253
.
A longitudinal engagement groove
237
is formed in the front cylinder
231
. Projections
257
formed on a surface of the push rod
251
are engaged with the engagement groove
237
, thereby constituting a rotary stop mechanism. Further, on the side of the container body, the projections
257
are spirally engaged with a female screw section
245
, thereby constituting a spiral engagement mechanism.
When the front cylinder
231
and the container body cylinder
241
are rotated in such a state, the push rod
251
advances while rotating synchronously with the front cylinder
231
. Thus, the stick type cosmetic material starts projecting from a tip opening
235
.
Further, in the stick type cosmetic material feeding container shown in
FIG. 9
, a female screw section
261
is provided at a base end of the front cylinder
231
An engagement groove
265
which is engaged with the projections
257
of the push rod
251
in a vertical direction constitutes a rotary stop mechanism in the container body cylinder
241
. The female screw section
261
described above and the projections
257
of the push rod
251
which are spirally engaged with the female screw section
261
constitute a spiral engagement mechanism.
Thus, in
FIG. 9
, the push rod
251
and the front cylinder
231
are rotated relatively to each other and the stick type cosmetic material
233
advances while rotating with respect to the front cylinder
231
.
However, in the stick type cosmetic material feeding containers shown in
FIGS. 8 and 9
, the stick type cosmetic material is retained at the tip cavity section
253
of the push rod
251
. A space for the tip cavity section
253
, which is equivalent to a thickness of the push rod
251
, is provided in the front cylinder
231
.
Therefore, when the stick type cosmetic material is, for example, warped due to heat or a change of dead weight, in
FIG. 8
, a load on the stick type cosmetic material is relatively light because the stick type cosmetic material advances without rotating in the front cylinder. However, when the front cylinder and the stick type cosmetic material advance while rotating relatively to each other as shown in
FIG. 9
, the stick type cosmetic material in a state of being warped comes into contact with an inner circumferential surface of the front cylinder while making a rotation, whereby the stick type cosmetic material is easily broken or chipped off.
As shown in
FIG. 9
, the stick type cosmetic material feeding container in which the stick type cosmetic material advances while rotating with respect to the front cylinder has the effect of creating a high-grade atmosphere by giving a molding core of lipstick a cubic effect. In particular, a stick type cosmetic material of a small bore diameter has an advantage of being three-dimensional for the reason described above, but such a stick type cosmetic material is hardly utilized under the existing circumstances.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a stick type cosmetic material feeding container in which a stick type cosmetic material advances while rotating relatively to a front cylinder, but the stick type cosmetic material keeps standing up straight in the front cylinder. Thus, there is a lesser possibility that the stick type cosmetic material might be broken or chipped off at the time of use.
In order to achieve the object described above, a stick type cosmetic material feeding container according to the present invention comprises a front cylinder having an opening hole at its tip, a container body to be coaxially and rotatably connected to the front cylinder, a push rod which is provided in these front cylinder and container body and at the tip of which a cosmetic material retaining section for retaining a stick type cosmetic material is formed, a spiral engagement mechanism formed between the push rod and an inner circumference of the front cylinder, and a rotary stop mechanism formed between the push rod and the container body, wherein a feeding mechanism for causing the stick type cosmetic material to go in and out through the opening hole of the front cylinder by moving the push rod in an axial direction due to rotations of the front cylinder and the container body is provided, a spiral groove is formed at an inner circumference of the front cylinder so as to constitute the spiral engagement mechanism, and the cosmetic material retaining section is constituted by a spiral piece which extends in a helical shape from a tip of the push rod and is spirally engaged with the spiral groove.
In an aspect of the present invention, the spiral groove in the front cylinder comprises a single line of groove and also the spiral piece provided at a tip of the push rod comprises a single line of spiral piece with the same pitch as that of the spiral groove and a stick type cosmetic material is stored and retained in a space inside the spiral piece.
In another aspect of the present invention, the push rod is furnished with a spiral engagement section with the same pitch as that of the spiral piece in such a manner that the spiral engagement section is lined with the spiral piece provided at a tip of the push rod, and the spiral engagement section and the spiral groove of the front cylinder are spirally engaged, thereby constituting the spiral engagement mechanism described above.
In yet another aspect of the present invention, the push rod is furnished with a projection on an extension line of a spiral of the spiral piece which is provided at a tip of the push rod, and the projection and the spiral groove are spirally engaged, thereby constituting the spiral engagement mechanism described above.
In yet another aspect of the present invention, the length of the spiral groove in an axial direction which is provided in the front cylinder is set to be longer than a shifting stroke of the push rod.
In yet another aspect of the present invention, at an outer circumference of the spiral piece provided at a tip of the push rod, there are provided diameter expansion preventing means for preventing the expansion of an inside diameter of the cosmetic material retaining section which is in contact with a bottom of the spiral groove and is formed inside the spiral piece.
Thus, according to the present invention, in a kind of stick type cosmetic material feeding container in which a stick type cosmetic material core advances while rotating with respect to the front cylinder, since the spiral piece which constitutes the cosmetic material retaining section is engaged with the spiral groove of the front cylinder, the inside diameter of the cosmetic material retaining section, namely, a gap between the outside diameter of the stick type cosmetic material and an inner circumference of the front cylinder at which the spiral groove is formed can be extremely small. As a result, it is possible for the stick type cosmetic material to advance while sliding in the front cylinder with a minimum space left between the s
Doan Robyn Kieu
Rabin & Berdo PC
Suzuno Kasei Kabushiki Kaisha
Wilson John J.
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