The marker rotation and retention device maintains multiple markers together, making it easier for a user to maintain the markers as a set. Optionally, the marker rotation and retention device includes angular rotation stops that are able to hold the angular position of specific marker with respect to its neighbors. This allows the user to easily withdraw and replace a specific marker by keeping the entrance to the cap exposed.

A refill for a writing felt pen, the refill comprising a deformable pouch and a nib inserted into the deformable pouch, the deformable pouch comprising a mix of dry absorbent polymer, fibers and dry ink.

A refill for a writing felt pen, the refill comprising a deformable pouch and a nib inserted into the deformable pouch, the deformable pouch comprising a mix of dry absorbent polymer, fibers and dry ink.

A multicolor marker assembly for making a multicolored mark on a bingo card includes a bottle that has a plurality of chambers being integrated therein. Each of the chambers contains a fluid pigment of a respective color. An applicator is removably coupled to the bottle and the applicator is comprised of a fluid permeable material to absorb the fluid pigment contained in each of the chambers. Additionally, the applicator releases the fluid pigment in each of the chambers when the applicator is pressed against a surface to make a mark comprising a plurality of colors. A cap is positionable over the applicator to inhibit the applicator from releasing the fluid pigments.

A multicolor marker assembly for making a multicolored mark on a bingo card includes a bottle that has a plurality of chambers being integrated therein. Each of the chambers contains a fluid pigment of a respective color. An applicator is removably coupled to the bottle and the applicator is comprised of a fluid permeable material to absorb the fluid pigment contained in each of the chambers. Additionally, the applicator releases the fluid pigment in each of the chambers when the applicator is pressed against a surface to make a mark comprising a plurality of colors. A cap is positionable over the applicator to inhibit the applicator from releasing the fluid pigments.

A liquid applicator is described. The liquid applicator includes an applicating head, a buffer in communication with the outside air, a gas-liquid exchanger, and a reservoir supplying a liquid to the gas-liquid exchanger. The gas-liquid exchanger has a wick, a liquid sealing tube covering on the outer peripheral wall of the wick, and a gas-liquid channel disposed between the wick and the liquid sealing tube; the buffer covers on the outer peripheral wall of the liquid sealing tube, and capillary pressure of the liquid sealing tube is greater than capillary pressure of the buffer by 30% or more. The liquid applicator can effectively control the release of a liquid. It can prevent the liquid from leaking out. It features a simple structure, resulting in smooth application and easy manufacturing.

A liquid applicator is described. The liquid applicator includes an applicating head, a buffer in communication with the outside air, a gas-liquid exchanger, and a reservoir supplying a liquid to the gas-liquid exchanger. The gas-liquid exchanger has a wick, a liquid sealing tube covering on the outer peripheral wall of the wick, and a gas-liquid channel disposed between the wick and the liquid sealing tube; the buffer covers on the outer peripheral wall of the liquid sealing tube, and capillary pressure of the liquid sealing tube is greater than capillary pressure of the buffer by 30% or more. The liquid applicator can effectively control the release of a liquid. It can prevent the liquid from leaking out. It features a simple structure, resulting in smooth application and easy manufacturing.

An applicator includes a main body, a storage chamber disposed in the main body, an application body disposed at an end of the main body to allow application of the liquid stored in the storage chamber. A partition for partitioning between the storage chamber side and the application body side, includes a flow passage to supply the liquid in the storage chamber to the application body. An axially movable air communication pipe having an air port open to the storage chamber, which abuts on the partition to close the flow passage, communicates the storage chamber with the atmosphere while having the flow passage closed. A spring member for urging the air communication pipe to abut on the partition, and separating the air communication pipe from the partition through vibration of the main body allows guiding of the liquid in the storage chamber.

An applicator includes a main body, a storage chamber disposed in the main body, an application body disposed at an end of the main body to allow application of the liquid stored in the storage chamber. A partition for partitioning between the storage chamber side and the application body side, includes a flow passage to supply the liquid in the storage chamber to the application body. An axially movable air communication pipe having an air port open to the storage chamber, which abuts on the partition to close the flow passage, communicates the storage chamber with the atmosphere while having the flow passage closed. A spring member for urging the air communication pipe to abut on the partition, and separating the air communication pipe from the partition through vibration of the main body allows guiding of the liquid in the storage chamber.

A writing instrument may include an upper barrel rotatably connected to a lower barrel. Writing fluid reservoirs may be housed in the upper barrel. A writing tip secured to the lower barrel may be in selective fluid communication with the writing fluid reservoirs. The upper barrel may be rotatable relative to the lower barrel of the writing instrument.