Application implement
AssigneeA.W. Faber-Castell Unternehmensverwaltung GmbH & Co.
InventorsJürgen Raps, Jochen Griesheimer, Daniel Baum
Life of this patent
Estimating the term…
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.
Claims22
An implement for applying a fluid, comprising:
- a sleeve-like shank having a container, said container having:
- an interior accommodating a fluid;
- a front end;
- a rear end, said front end and said rear end each fluidically connected to the atmosphere for admitting air into and extracting air from said interior;
- and
- at least one air-admission opening disposed at said rear end of said container and opening said interior to the atmosphere;
- a diaphragm permeable to air and impermeable to the fluid, said diaphragm closing off said at least one air-admission opening;
- a writing tip of a capillary material, said tip connected to said shank;
- and
- a fluid-directing system fluidically connecting said writing tip to the fluid in said interior with said capillary material, said fluid-directing system directing fluid from said interior of said container to said writing tip.
A stick-like writing implement for applying a fluid, comprising:
- a sleeve-like shank having a container, said container having:
- an interior accommodating a fluid;
- a front end;
- a rear end;
- said front end and said rear end each fluidically connected to the atmosphere for admitting air into and extracting air from said interior;
- and
- at least one air-admission opening disposed at said rear end and fluidically connecting said interior to the atmosphere;
- a diaphragm permeable to air and impermeable to the fluid, said diaphragm closing off said at least one air-admission opening;
- a writing tip of a capillary material, said tip connected to said shank;
- and
- a fluid-directing system fluidically connecting said writing tip to the fluid in said interior with said capillary material, said fluid-directing system directing fluid from said interior of said container to said writing tip.
A stick-like cosmetics implement for applying a fluid, comprising:
- a sleeve-like shank having a container, said container having:
- an interior accommodating a fluid;
- a front end;
- a rear end;
- said front end and said rear end each fluidically connected to the atmosphere for admitting air into and extracting air from said interior;
- and
- at least one air-admission opening disposed at said rear end and fluidically connecting said interior to the atmosphere;
- a diaphragm permeable to air and impermeable to the fluid, said diaphragm closing off said at least one air-admission opening;
- a writing tip of a capillary material, said tip connected to said shank;
- and
- a fluid-directing system fluidically connecting said writing tip to the fluid in said interior with said capillary material, said fluid-directing system directing fluid from said interior of said container to said writing tip.
Dependencies are inferred from the claim text.