A marking instrument having a plurality of removable writing nibs serially aligned so that an operator can remove a spent or fluid-affected writing nib and, thereby, access a fresh writing tip.

A marking instrument having a plurality of removable writing nibs serially aligned so that an operator can remove a spent or fluid-affected writing nib and, thereby, access a fresh writing tip.

According to an aspect, a writing instrument is provided. The writing instrument includes a reservoir for storing writing ink, a nib arranged distally to the reservoir and in fluid communication with the reservoir, a porous membrane or mesh surrounding at least a distal portion of the nib, wherein, in a writing position, the porous membrane or mesh is configured to contact the nib, thereby allowing ink to penetrate through the porous membrane or mesh.

According to an aspect, a writing instrument is provided. The writing instrument includes a reservoir for storing writing ink, a nib arranged distally to the reservoir and in fluid communication with the reservoir, a porous membrane or mesh surrounding at least a distal portion of the nib, wherein, in a writing position, the porous membrane or mesh is configured to contact the nib, thereby allowing ink to penetrate through the porous membrane or mesh.

Devices have a flexible housing with an inside chamber having a closed and open end. A first chemiluminescent fluid is disposed in a breakable container in the chamber, and a second chemiluminescent fluid is in the chamber. A tip assembly is attached to the housing and includes a nib movably disposed in the body, and a filter element may be positioned within the body to prevent passage of broken particles from the container to the nib tip. A resilient element is used to impose an outward biasing force on the nib. A porous material is disposed over an outer surface of the nib tip and securely held in place. The device is activated for use by bending the housing to break the container causing the first and second chemiluminescent fluids to mix and react, providing a chemiluminescent solution that flows to the tip assembly for dispensing onto a desired surface.

Devices have a flexible housing with an inside chamber having a closed and open end. A first chemiluminescent fluid is disposed in a breakable container in the chamber, and a second chemiluminescent fluid is in the chamber. A tip assembly is attached to the housing and includes a nib movably disposed in the body, and a filter element may be positioned within the body to prevent passage of broken particles from the container to the nib tip. A resilient element is used to impose an outward biasing force on the nib. A porous material is disposed over an outer surface of the nib tip and securely held in place. The device is activated for use by bending the housing to break the container causing the first and second chemiluminescent fluids to mix and react, providing a chemiluminescent solution that flows to the tip assembly for dispensing onto a desired surface.

Dry erase ink formulations containing at least one colorant encapsulated in a plurality of capsules wherein the capsules comprise a release agent, methods of erasing dry erase ink formulations, and writing instruments including a writing tip portion connected to a tubular member or refill and a dry erase ink formulation are provided herein.

Dry erase ink formulations containing at least one colorant encapsulated in a plurality of capsules wherein the capsules comprise a release agent, methods of erasing dry erase ink formulations, and writing instruments including a writing tip portion connected to a tubular member or refill and a dry erase ink formulation are provided herein.

A writing implement comprises a main body and a cap, and the main body comprises a plunger. An undercut is formed on an inner wall of the cap. When the cap is engaging to the main body, a load from the inner wall of the cap is applied to the plunger. The cap is interlocked to the main body when the load against the plunger is reduced or removed. With such a structure, the writing implement can be attached and detached smoothly between two detachable parts such as the cap and the main body. Also, it is possible to reduces friction and wear on an engaging and interlocking section.

A writing implement comprises a main body and a cap, and the main body comprises a plunger. An undercut is formed on an inner wall of the cap. When the cap is engaging to the main body, a load from the inner wall of the cap is applied to the plunger. The cap is interlocked to the main body when the load against the plunger is reduced or removed. With such a structure, the writing implement can be attached and detached smoothly between two detachable parts such as the cap and the main body. Also, it is possible to reduces friction and wear on an engaging and interlocking section.