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 implement includes a housing for receiving a refill, an operating side and a writing side. An adjustment mechanism in the housing has a guide bushing and a cam pin concentrically arranged therein and spring-loaded along the longitudinal axis on the refill, which cam pin engages an end of the refill. The cam pin has at least two locking positions, which are offset along the longitudinal axis. The writing implement includes a control arrangement having a resetting device, a freewheel couplable with an operating unit arranged at the operating side and a cam bushing couplable with the freewheel. The resetting device exerts a resetting force onto the operating unit. The freewheel is a rotatably supported body having a circumferential recess and forms an operative connection in a region with a second body that is rotatably supported and concentrically thereto. One of the first and second rotatably supported bodies is freely rotatable around its longitudinal axis in an angle range and transfers a rotation from the operating unit to the cam bushing outside of this range.

A writing system comprises a writing tool comprising a barrel having a first end and a second end, a medium holder having a first end and a second end, the medium holder disposed within the barrel, wherein the medium holder is adapted to support a medium applicator to protrude from the first end of the barrel, and a magnetic core disposed within the barrel proximate to the first end of the barrel.

A writing implement comprises first to n-th members (n is a natural number), an inner tube and a device of mechanism for projecting or retracting a writing tip connected to the first member, and the first to n-th members are stacked around the inner tube. Each of the first to n-th members is able to transmit rotational motion to the adjacent member. With such a structure, design quality can be improved. Also, it can provide a writing implement which attracts people even when they are not writing.

A ballpoint pen bends at the pen tip, that can be changed by the force applied when writing. Wobbling does not occur, and a stable writing feel can be obtained. The ballpoint pen makes it possible to clearly change the thickness of the drawn line by the force applied when writing, so that lines of different thickness can be written with a single writing tip using the angle of the ballpoint pen tip. The ballpoint pen includes: a writing ball; a holder for holding the writing ball; an ink supply section; a shaft body inside which the ink supply section is held; and a tip shaft, which is connected to the tip of the shaft body and from which the holder protrudes during writing. The tip shaft is formed by two-color molding in which a front half and a back half are interdigitated in a saw tooth form.

Articulated pens are provided. A pen includes: a shank; an ink tube comprising a first section, a second section, a third section, and a fourth section; a writing tip connected to the fourth section; a first guide rail connected to the shank and that bends the ink tube at a first angle between the first section and the second section; and a second guide rail pivotally connected to the first guide rail and that bends the ink tube at a second angle between the third section and the fourth section. Pivoting the second guide rail relative to the first guide rail adjusts a third angle between the second section and the third section.

The disclosed technology includes methods and systems for facilitating handwriting for individuals who require assistance with their fine motor skills and pinch strength due to various conditions or injury. The methods and systems include writing instruments that may be used in order of succession based on improved or worsened fine motor skills. In one implementation, the method includes measuring a first writing capability of a user, selecting a first writing instrument with a barrel of a predetermined circumference and a predetermined weight selected based on the first writing capability of the user, using the selected first writing instrument for a first phase, measuring a second writing capability, detecting a first change between the first writing capability and the second writing capability, determining that the first phase is completed based on the detected first change, and selecting a second writing instrument responsive to determining the first phase is completed.

The method and apparatus described herein allows for the automatic retraction and extension of the writing element of a bistable self-retaining writing instrument. The method and apparatus consists of a writing element that is joined to the end of a flexible tube or material. These are inserted through a longitudinal channel formed along the outer surface of the writing instrument and are anchored only at the end opposite the writing element. When the bistable self-retaining writing instrument transitions from a coiled to straight configuration the writing element is automatically exposed. Conversely, when pushed into its coiled configuration the writing element slides back into the channel and is thereby protected. The flexible tube or material may also act as a reservoir for a writing substrate such as ink.

A writing instrument having a removal function of a handwritten content is provided where a tip erasing body that erases incorrectly written words or pictures is formed on the outer peripheral surface of a lower body, and the tip erasing body and the lower body are formed by a double injection molding method. An integrated one body prevents any form of gap between the tip erasing body and the lower body. Since the tip erasing body is integrally made with the lower body, when a user wants to erase incorrect contents, an unstable state like a conventional product can be overcome.

A pen part comprising a hollow tube having an external surface and an internal wall of which delimits a cavity. The hollow tube comprises a stone sleeve an external surface of which at least partly forms the external surface of the hollow tube, and a lining element an external surface of which is applied to an internal surface of the sleeve.