Pelikan Aktiengesellschaft

Pelikan, Inc.

Gunter Ulrich

Christoph Manusch

Udo Obersteller

Gunter Scholz

Christian Hofmann

Friedrich Dralle

Uwe Femmer

Rudolf Boiko

Manfred Brummer

Heinrich Schoop

A liquid-depositing implement includes a tubular case (1) containing a supply chamber (2) and a reservoir (3) isolated from the chamber with both the chamber and reservoir being fillable with a deposition liquid. A depositing element (6) can be mounted to the case (1) and connected to the supply chamber (2). The supply chamber includes a valve-system (4) composed of two mutually telescoping and displaceable bushes (9, 10) resting tightly against each other and enclosing a cell (16) bounded at each of its axial ends by at least one base (14, 15) affixed to the inner or outer bush. Two sets of cooperating valve apertures (17, 18; 19, 20) are present in such manner in the walls of the bushes (9, 10) that by rotating one bush (10) relative to the other bush (9), first one set of valve apertures (19, 20) passes from a communicating position to a sealed position and thereupon the other set of valve apertures (17, 18) passes from the sealed position into the communicating position.

Liquid-depositing implement for writing, drawing, painting, for

The cap for the writing instrument comprises a jacket mounted slidably on a sealing insert or sleeve which provides a sealed moisture chamber for the writing tip when the cap is on the writing instrument. Near the writing tip there is a circular bulge on the shaft of the writing instrument which enters into a sealing engagement with an interior passage of the sealing insert. On putting the cap on the writing instrument the sealing insert is pushed over the circular bulge until it contacts a contacting stop on the jacket. Then the circular bulge presses tightly into the sealing insert and it locks the jacket to the writing instrument so that the entire arrangement is kept in that position until the cap is removed. A signal slider is attached with the sealing insert which is extendable out from the end of the jacket in order to signal in its extended position the proper seating of the cap on the writing instrument. Erroneous indications of a sealed state are prevented with our invention.

Writing instrument with a signal cap

A ball point pen cartridge capable of being pressurized in a pressure vessel including an end stopper having an enlarged section shaped to seal the end of a cartridge tube, a narrower section connected to the enlarged portion and extending into the cartridge, an axial tube running completely through the enlarged section and partly through the narrower section, a radial tube in the narrower section that intersects the axial tube and a flexible, gas impervious tube surrounding the narrower section to form a check valve with the radial tube.

Process for the production of a ball point pen cartridge

Growing community of inventors

Hanover, Germany

Gunter Ulrich