The present disclosure relates to a friction body for discoloring handwriting written with a thermochromic ink with frictional heat, wherein the friction body comprises a surface portion configured to generate frictional heat when manually rubbed on a porous substrate and wherein 5 the friction body comprises a first thermal conductivity in a first direction substantially parallel to the surface plane which is greater than a second thermal conductivity in a second direction which is substantially perpendicular to the surface plane.

The present disclosure relates to a friction body for discoloring handwriting written with a thermochromic ink with frictional heat, wherein the friction body comprises a surface portion configured to generate frictional heat when manually rubbed on a porous substrate and wherein 5 the friction body comprises a first thermal conductivity in a first direction substantially parallel to the surface plane which is greater than a second thermal conductivity in a second direction which is substantially perpendicular to the surface plane.

A manual device including a first portion and a second portion. The second portion being at least partially fitted into the first portion and being moveable in translation relative to the first portion. The first portion having a first distal end while the second portion has a second distal end opposite the first distal end. The second portion also includes a locking device designed to prevent the first portion from moving in translation relative to the second portion only when, considered in the direction of gravity. The first distal end is arranged above the second distal end, and the locking device includes a chamber and a ball or equivalent accommodated in the chamber. The chamber is provided only in the second portion.

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 beat recording pen for the recording and editing music and while serving as writing instrument. The device includes a retractable writing instrument disposed in an elongated shaft designed to house a power supply designed to provide electrical power to a transceiver that can transmit and receive digital signals to and from a connected mobile device or computer. The beat recording pen further includes an impact sensor that can detect an audio input signal of an impact event and convert the audio input signal into a digital signal. A micro-controller is disposed within the pen and can record the converted audio input signals detected by the impact sensor and interface with a software application installed on a connected mobile device or computer.

A combination writing utensil and handcuff tool including a writing utensil having a slotted interior chamber and a plurality of spring-loaded buttons. A pair of writing tips is disposed within the slotted interior chamber, with each of a first of the pair of writing tips and a second of the pair of writing tips engaged with each of a first of the plurality of spring-loaded buttons and a second of the plurality of spring-loaded buttons, respectively, and lockably extended through an opening of the writing utensil. Additionally, each of a handcuff key and a handcuff lock is disposed within the slotted interior chamber of the writing utensil. Each of the handcuff key and the handcuff lock is engaged with each of a third of the plurality of spring-loaded buttons and a fourth of the plurality of spring-loaded buttons, respectively, and lockably extended through the opening of the writing utensil.

A thermochromic writing instrument including a writing body, storing a thermochromic ink therein, stored in a barrel; an operation body provided in the barrel to be operated to longitudinally move the writing body; a nib of the writing body configured to be capable of appearing from a front end of the writing instrument, wherein the writing instrument 1 further includes a friction unit, for rubbing handwriting in the thermochromic ink and capable of thermally changing the color of the handwriting by frictional heat generated at that time, and at least one clip body as the operation body, the friction unit 10 is provided at a rear end of the barrel, and the clip body is provided in an area other than the rear end of the barrel.

A combination spinning top including a multiplicity of petals removably retained at spaced apart locations on a circumferential end wall of a central round body to give the combination spinning top the appearance of a flower and to provide balance to enable the combination spinning top to spin on a tip for a longer period of time than it would spin without the petals. Each of the multiplicity of petals retain a writing instrument, the writing instrument also serving as an attaching arm to attach a respective petal to the central body of the spinner top.

A combination spinning top including a multiplicity of petals removably retained at spaced apart locations on a circumferential end wall of a central round body to give the combination spinning top the appearance of a flower and to provide balance to enable the combination spinning top to spin on a tip for a longer period of time than it would spin without the petals. Each of the multiplicity of petals retain a writing instrument, the writing instrument also serving as an attaching arm to attach a respective petal to the central body of the spinner top.

A hand-held device, in particular a writing instrument, comprising a body, a single carriage carrying a first head and a second head, or a first carriage and a second carriage carrying respectively the first head and the second head, and a blocking device including a cavity and a ball, the ball) blocking the single carriage or the first carriage when the first end is below the second end, such that the first head is blocked and projecting while the second head is retracted, and the ball blocking the single carriage or the second carriage when the first end is above the second end, such that the second head is blocked and projecting while the second first head is retracted.