A four color multi-pencil capable of one-handed operation is presented. Each color is contained in a cartridge assembly and each cartridge assembly may be individually selected for use and the material within the cartridge advanced for dispensing by means of a single pressing motion. The multi-pencil is designed to be a “snap together” assembly. No fasteners or adhesives are required. The multi-pencil contains a main body and a barrel. Housed within the barrel are a plurality of cartridge assemblies. Housed within the main body are a plurality of slide members for actuating the cartridges. Each cartridge assembly contains a mechanism for advancing drawing material or material to be dispensed.

A four color multi-pencil capable of one-handed operation is presented. Each color is contained in a cartridge assembly and each cartridge assembly may be individually selected for use and the material within the cartridge advanced for dispensing by means of a single pressing motion. The multi-pencil is designed to be a “snap together” assembly. No fasteners or adhesives are required. The multi-pencil contains a main body and a barrel. Housed within the barrel are a plurality of cartridge assemblies. Housed within the main body are a plurality of slide members for actuating the cartridges. Each cartridge assembly contains a mechanism for advancing drawing material or material to be dispensed.

Multifunction writing instrument comprising a body extending in an axial direction and housing at least two retractable writing elements and a ring portion movable in rotation. The ring portion having at least as many pairs of guide surfaces as retractable writing elements. The writing elements include buttons. Each button is configured to cooperate with a respective one of the pair of guide surfaces of the ring portion. Actuation of the button of a writing element facilitates movement of the writing element from the retracted position to the writing position and returns any of the other writing elements in the writing position to the retracted position, whereby at most, one writing element is in the writing position.

Multifunction writing instrument comprising a body extending in an axial direction and housing at least two retractable writing elements and a ring portion movable in rotation. The ring portion having at least as many pairs of guide surfaces as retractable writing elements. The writing elements include buttons. Each button is configured to cooperate with a respective one of the pair of guide surfaces of the ring portion. Actuation of the button of a writing element facilitates movement of the writing element from the retracted position to the writing position and returns any of the other writing elements in the writing position to the retracted position, whereby at most, one writing element is in the writing position.

A multifunction pen includes plural refills including an electromagnetic induction touch pen. A knock operation to one of knock rods each of which is connected to a rear end of each of the plural refills causes a tip of one refill of the plural refills to move from a standby position in which the tip stays inside a shaft tube to an in-use position in which the tip projects from a tip end opening of the shaft tube. At least one refill from writing refills other than the electromagnetic induction touch pen is provided with a metal writing tip, and a tip of the electromagnetic induction touch pen at the in-use position is separated from the tips of the writing refills at the standby position by a distance such that electromagnetic induction by the electromagnetic induction touch pen is not affected by the tips of the writing refills.

A multifunction pen includes plural refills including an electromagnetic induction touch pen. A knock operation to one of knock rods each of which is connected to a rear end of each of the plural refills causes a tip of one refill of the plural refills to move from a standby position in which the tip stays inside a shaft tube to an in-use position in which the tip projects from a tip end opening of the shaft tube. At least one refill from writing refills other than the electromagnetic induction touch pen is provided with a metal writing tip, and a tip of the electromagnetic induction touch pen at the in-use position is separated from the tips of the writing refills at the standby position by a distance such that electromagnetic induction by the electromagnetic induction touch pen is not affected by the tips of the writing refills.

A writing tool includes a refill having an ink reservoir tube formed to be a straight cylinder whose wall thickness is less than 0.56 mm; and a writing tip or a relay member holding the writing tip attached to a first end of the ink reservoir tube, wherein the refill is detachably attached to a barrel, wherein in the refill, amounting strength between the writing tip or the relay member holding the writing tip and the ink reservoir tube is set higher than a mounting strength between the barrel and a connecting portion of the ink reservoir tube. There is provided a writing tool that can prevent the occurrence of a problem such as leakage of ink at a time of replacement of refills and perform replacement of refills smoothly.

A writing tool includes a refill having an ink reservoir tube formed to be a straight cylinder whose wall thickness is less than 0.56 mm; and a writing tip or a relay member holding the writing tip attached to a first end of the ink reservoir tube, wherein the refill is detachably attached to a barrel, wherein in the refill, amounting strength between the writing tip or the relay member holding the writing tip and the ink reservoir tube is set higher than a mounting strength between the barrel and a connecting portion of the ink reservoir tube. There is provided a writing tool that can prevent the occurrence of a problem such as leakage of ink at a time of replacement of refills and perform replacement of refills smoothly.

Proposed is multi-color marker pen which is composed of a cap (200) and a casing (100) covered by the cap (200). The casing (100) is composed of a linear shaft (110) covered by the cap (200) and having the shape of a hollow body, a sealing part (120) coupled to the upper part of the linear shaft (110) and having a guide (121) formed therein, and a button operation part (130) coupled to the upper part of the sealing part (120). A plurality of tubes (300) is provided in the casing (100), and the upper part of each of the plurality of tubes 300 is coupled to the sealing part (120) in which the guide (121) is formed. The button operation part is composed of three buttons, and by pressing the button operation part (130), the lower part of each of the tubes is ejected through a hole (111) formed in the lower end of the linear shaft (110). In addition, the casing (100) the linear shaft (110) covered by the cap (200) and having the shape of a hollow body, the sealing part (120) coupled to the upper part of the linear shaft (110) and having the guide (121) formed therein, and an operation handle (130) coupled rotatably to the upper part of the sealing part (120). The plurality of tubes (300) is provided in the casing (100), and the upper part of each of the plurality of tubes 300 is coupled to the sealing part (120) in which the guide (121) is formed, and due to the rotation of the operation handle (130), the lower part of each of the tubes is ejected through the hole (111) formed in the lower end of the linear shaft (110). Molten synthetic resin is injected into a mold (1000) composed of an upper mold (1100) and a lower mold (1200) so as to manufacture the casing, the cap, and the operation handle.

Proposed is multi-color marker pen which is composed of a cap (200) and a casing (100) covered by the cap (200). The casing (100) is composed of a linear shaft (110) covered by the cap (200) and having the shape of a hollow body, a sealing part (120) coupled to the upper part of the linear shaft (110) and having a guide (121) formed therein, and a button operation part (130) coupled to the upper part of the sealing part (120). A plurality of tubes (300) is provided in the casing (100), and the upper part of each of the plurality of tubes 300 is coupled to the sealing part (120) in which the guide (121) is formed. The button operation part is composed of three buttons, and by pressing the button operation part (130), the lower part of each of the tubes is ejected through a hole (111) formed in the lower end of the linear shaft (110). In addition, the casing (100) the linear shaft (110) covered by the cap (200) and having the shape of a hollow body, the sealing part (120) coupled to the upper part of the linear shaft (110) and having the guide (121) formed therein, and an operation handle (130) coupled rotatably to the upper part of the sealing part (120). The plurality of tubes (300) is provided in the casing (100), and the upper part of each of the plurality of tubes 300 is coupled to the sealing part (120) in which the guide (121) is formed, and due to the rotation of the operation handle (130), the lower part of each of the tubes is ejected through the hole (111) formed in the lower end of the linear shaft (110). Molten synthetic resin is injected into a mold (1000) composed of an upper mold (1100) and a lower mold (1200) so as to manufacture the casing, the cap, and the operation handle.