Patent · US Active

Luminous pencil

US9211758B2 · kind B2 · utility

0Cited by

11References

23Claims

0Family size

Assignee

FABER-CASTELL AG · DE

Inventors

Hans Poisel · Leinburg, DE
Olaf Ziemann · Berlin, DE
Alexander Bachmann · Ismaning, DE

Key dates

Filing date	Mar 2, 2011
Grant date	Dec 15, 2015
Priority date	—
Expiry date	Aug 23, 2033

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB43K29/10
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

A pencil has a pencil casing made of a sharpenable casing material and a core held in a central receiving bore in the casing material that extends in the longitudinal direction of the pencil. One or more optical fibers made of a sharpenable material is/are arranged in the pencil casing. The optical fiber or optical fibers extends in the longitudinal direction as well and are at least partially surrounded by the material of the pencil casing. A light entry surface of the at least one optical fiber is arranged at the rear end of the pencil casing such that a light source, which is present there, can be used to inject light to said light entry surface. The light exit surface of the optical fiber exits at the forward end of the pencil casing.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.