A writing system includes a silicone finger pen covering including a first end portion and a second end portion. The first end portion includes a magnet and the second end portion includes an opening configured to receive an index finger of an end user. An interchangeable pen tip includes a first section and a second section. The first section is configured to contact a writing surface and the second section includes a metal surface configured to magnetically secure to the magnet. A pen tips casing includes a lid portion and a bottom portion. The bottom portion includes a plurality of slots configured to receive a plurality of interchangeable pen tips. The silicone finger pen covering can be an electronic silicone finger pen covering and a non-electronic silicone finger pen covering. The electronic silicone finger pen covering further includes a battery, a processor, and a button.

A writing instrument that comprises a writing instrument base and a focus tool is provided. The writing instrument base includes a marking system coupled with a barrel. The marking system is configured to provide writings on a writing medium, such as paper. The focus tool is coupled with the writing instrument base. The focus tool is configured to blend in with the writing base. The focus tool includes a device that engages a user's senses and reduces the negative impact of attention deficit disorders when used by the user. The fidget tool stimulates the user's vestibular system and proprioceptive senses through one or more of the following: movement, sound, smell, visual, and tactile action. The fidget tool may be discreet such that the tool is hidden or not viewable when not in use.

A writing instrument that comprises a writing instrument base and a focus tool is provided. The writing instrument base includes a marking system coupled with a barrel. The marking system is configured to provide writings on a writing medium, such as paper. The focus tool is coupled with the writing instrument base. The focus tool is configured to blend in with the writing base. The focus tool includes a device that engages a user's senses and reduces the negative impact of attention deficit disorders when used by the user. The fidget tool stimulates the user's vestibular system and proprioceptive senses through one or more of the following: movement, sound, smell, visual, and tactile action. The fidget tool may be discreet such that the tool is hidden or not viewable when not in use.

Writing equipment includes a cylinder-shaped body having a lead and a lead tank, and an arch-shaped scale on which scale marks are printed, wherein the scale is coupled with the body detachably, and wherein the scale is formed with the particular angle, which is same as that of a curve of the cylinder-shaped body.

A refill friendly pen body that is configured to adapt to a refill cartridge of various dimensional parameters. An adjustment cylinder is adjustably carried within a barrel to adapt the pen body to a length of the refill cartridge. A grip end of the pen body is configured with an internal collet to compressively engage with a forward end of the cartridge across to retain the forward end of the cartridge in a writing position. The pen body may also be provided with a cap to selectively cover and uncover the writing tip.

A pen includes: a shank; an ink tube inside the shank; a first tip member connected to a distal end of the shank; a second tip member connected to a distal end of the first tip member; and a bent tubular member including a proximal end section, a middle section, and a distal end section. An axis of the middle section is arranged at a first angle relative to a central axis of the shank. The axis of the middle section is arranged at a second angle relative to an axis of the distal end section, the second angle being in a range of 45 to 90. The axis of the distal end section is arranged at a third angle relative to the central axis of the shank.

A pen includes: a shank; an ink tube inside the shank; a first tip member connected to a distal end of the shank; a second tip member connected to a distal end of the first tip member; and a bent tubular member including a proximal end section, a middle section, and a distal end section. An axis of the middle section is arranged at a first angle relative to a central axis of the shank. The axis of the middle section is arranged at a second angle relative to an axis of the distal end section, the second angle being in a range of 45 to 90. The axis of the distal end section is arranged at a third angle relative to the central axis of the shank.

A writing instrument includes a barrel and a cap capable of being assembled with and secured to the barrel. The barrel carries a writing instrument. The cap carries a clip. A free end of the clip includes a detent that can be received by a corresponding indentation of an exterior surface of an external portion of the barrel when the cap is assembled with the barrel. The detent of the clip and the indentation of the barrel are capable of securing the cap and the barrel in their assembled relationship. The writing instrument may be compact. Methods of using a writing instrument include securing a cap of the writing instrument to a barrel of the writing instrument by causing a detent of a free end of a clip of the cap to engage a corresponding indentation of an exterior portion of the barrel.

An angle-adjustable, gravity flow ink refill and pen, each comprising of at least one bendable portion along its length. The bendable portion acts as a concertina-type hinge to allow both the pen and refill to bend to an angle and maintain the bend imparted to it. In a preferred embodiment, the refill is flexible in structure (full or partial) and the pen having a crimped corrugated bendable portion. In an alternate embodiment, intertwined helical wires form the bendable portion for the pen, the refill or both to maintain the angle bent. Alternatively a flexible gooseneck tube is used for the bendable portion of the pen. The pen writes normally on flat surfaces and on inclined surfaces, the rear end of the pen is bent forward such that the rear is pointed upwards towards the sky. This allows ink to flow towards the tip via gravity and facilitate consistent delivery of ink at multiple writing angles.

The present disclosure relates to a system comprising a writing instrument. The writing instrument comprises an ink. wherein the ink comprises a coloring agent and a bonding agent. The adhesiveness of the bonding agent can be altered by applying a voltage or a voltage and a current. Further. the system comprises a writing surface comprising a first electrode and a second electrode or a writing surface comprising a first electrode and an erasing tool comprising a second electrode.