A portable kit for storing a pen according to the present invention includes a base in which an accommodation portion is famed. The pen is fastened to the accommodation portion, and is coupled to a coupling kit having a shape corresponding to that of the accommodation portion and accommodated in the accommodation portion. A grip portion is formed on the coupling kit, and allows the pen to be withdrawn from or retracted into the base in such a manner that the grip portion is pushed with a finger.

A portable kit for storing a pen according to the present invention includes a base in which an accommodation portion is famed. The pen is fastened to the accommodation portion, and is coupled to a coupling kit having a shape corresponding to that of the accommodation portion and accommodated in the accommodation portion. A grip portion is formed on the coupling kit, and allows the pen to be withdrawn from or retracted into the base in such a manner that the grip portion is pushed with a finger.

Provided is a cosmetic liquid applicator that allows easy determination as to the completion state of replacement of an application liquid tank. The cosmetic liquid applicator includes a front barrel to which an application liquid tank for storing a liquid cosmetic to be fed to an applying part is attached and a rear barrel attached to the front barrel to cover the application liquid tank. The front barrel has on its peripheral surface a male threaded portion and a first engagement portion formed in the circumferential direction and located in the rear of the male threaded portion while the rear barrel has on its inner circumferential surface a female threaded portion to mate with the male threaded portion and a second engagement portion to be engaged with the first engagement portion.

A two-color pen includes a pen body, a roller and water supply components; the roller is rotatably provided at the head of the pen body; there is at least one pair of water supply components, a reset device for pushing the water supply components to be in contact with the roller is provided in the pen body; and the roller is provided with a transmission part which alternatively pushes two water supply components in pairs in the direction away from the roller in sequence. The reset device in the two-color pen can push the water supply components outputting different colors in the direction of the roller. When the roller is rolling, the transmission part provided on the roller can alternately push the two water supply components in pairs in the direction away from the roller in sequence, so that the water outlet ends of the two water supply components in pairs can alternately abut against the roller in sequence under the action of the reset device. In this way, the roller can draw lines or patterns with two colors, thus better meeting the use requirements of users.

A two-color pen includes a pen body, a roller and water supply components; the roller is rotatably provided at the head of the pen body; there is at least one pair of water supply components, a reset device for pushing the water supply components to be in contact with the roller is provided in the pen body; and the roller is provided with a transmission part which alternatively pushes two water supply components in pairs in the direction away from the roller in sequence. The reset device in the two-color pen can push the water supply components outputting different colors in the direction of the roller. When the roller is rolling, the transmission part provided on the roller can alternately push the two water supply components in pairs in the direction away from the roller in sequence, so that the water outlet ends of the two water supply components in pairs can alternately abut against the roller in sequence under the action of the reset device. In this way, the roller can draw lines or patterns with two colors, thus better meeting the use requirements of users.

A writing instrument according to the present disclosure comprises a main body, a writing tip and a cap, wherein the cap is designed to be secured tightly on the main body such that the writing tip is covered by the cap. The cap comprises of an inner core and an outer layer, wherein a material of the outer layer is softer compared to a material of the inner core. With that, it is possible to design an air-tight (or almost air-tight) fitting cap for a writing instrument. With the softer outer layer of the cap, it is achieved that a user chewing on the cap has a reduced risk of damaging his/her teeth. In addition, although a membrane within the cap may still be present, such membrane is no longer necessary. The membrane may be an additional barrier contributing further to the air-tight effect of the cap that is present within the cap.

A refillable free ink writing instrument including a body having a rear end, a front end and an ink reservoir disposed between the rear end and the front end, a writing tip mounted on the front end and a plug mounted on the rear end, wherein the plug is configured to close an opening in fluid communication with the ink reservoir, the plug being configured to be removable from the rear end to refill the ink reservoir with water and concentrated ink refill.

A slide-type writing instrument having a drying-prevention device includes: a pen housing (10); an ink holder (30) disposed in the pen housing (10); a sealing member (40) configured to prevent a drying phenomenon of ink on a pen tip (31); a spring (50) configured to effect elastic support between the sealing member (40) and the ink holder (30); a guide member (60) configured to guide the sealing member (40) when the ink holder (30) is advanced or retreated; and a cam protrusion (70) configured to be responsible for a guiding function of moving the guide member (60). The sealing member includes a soft tube formed of a soft material and a hard tube formed of a hard material and in the shape of a hollow tube to externally surround the soft tube, and the soft tube and the hard tube form a dual cross-section structure.

A slide-type writing instrument having a drying-prevention device includes: a pen housing (10); an ink holder (30) disposed in the pen housing (10); a sealing member (40) configured to prevent a drying phenomenon of ink on a pen tip (31); a spring (50) configured to effect elastic support between the sealing member (40) and the ink holder (30); a guide member (60) configured to guide the sealing member (40) when the ink holder (30) is advanced or retreated; and a cam protrusion (70) configured to be responsible for a guiding function of moving the guide member (60). The sealing member includes a soft tube formed of a soft material and a hard tube formed of a hard material and in the shape of a hollow tube to externally surround the soft tube, and the soft tube and the hard tube form a dual cross-section structure.

A dual twist structure, an object ejecting device including the same, and a structure for sealing the same, the dual twist structure including: a housing configured to accommodate a content cartridge therein and having a cam groove provided at a tip thereof; a sleeve coupled to and fitted with the content cartridge and having a cam protrusion formed on an outer portion thereof; and a tubular operation body having a twist cam groove into which the cam protrusion is slidably fitted, and a cam pin protruding and configured to move to a position misaligned with the twist cam groove by being guided by the cam groove, in which the dual twist structure has the two cam grooves.