Patent · US Expired

Application implement

US6503016B2 · kind B2 · utility

6Cited by

3References

22Claims

0Family size

Assignee

A.W. Faber-Castell Unternehmensverwaltung GmbH & Co. · DE

Inventors

Jürgen Raps · Hof, DE
Jochen Griesheimer · Lenggries, DE
Daniel Baum · Menlo Park, US

Key dates

Filing date	Oct 17, 2001
Grant date	Jan 7, 2003
Priority date	—
Expiry date	Oct 17, 2021

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB43K8/146
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

A device for applying a fluid, notably a writing pen or cosmetic pencil, includes a tubular shaft, a fluid container that is positioned therein, a tip, and a conducting system for the fluid. The container ensures constant pressure equalization with the atmosphere by having its front and rear ends each being fluidically connected to the atmosphere. At the rear end of the container a ventilation opening is positioned. The ventilation opening opens into the container interior containing the fluid and is sealed by a semi-permeable membrane.

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