EP0149216B1 - Writing device - Google Patents

Writing device Download PDF

Info

Publication number
EP0149216B1
EP0149216B1 EP84116112A EP84116112A EP0149216B1 EP 0149216 B1 EP0149216 B1 EP 0149216B1 EP 84116112 A EP84116112 A EP 84116112A EP 84116112 A EP84116112 A EP 84116112A EP 0149216 B1 EP0149216 B1 EP 0149216B1
Authority
EP
European Patent Office
Prior art keywords
housing
writing
storage tank
needle
tank
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP84116112A
Other languages
German (de)
French (fr)
Other versions
EP0149216A3 (en
EP0149216A2 (en
Inventor
Kurt Held
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT84116112T priority Critical patent/ATE34341T1/en
Publication of EP0149216A2 publication Critical patent/EP0149216A2/en
Publication of EP0149216A3 publication Critical patent/EP0149216A3/en
Application granted granted Critical
Publication of EP0149216B1 publication Critical patent/EP0149216B1/en
Expired legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K8/00—Pens with writing-points other than nibs or balls
    • B43K8/16—Pens with writing-points other than nibs or balls with tubular writing-points comprising a movable cleaning element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K5/00—Pens with ink reservoirs in holders, e.g. fountain-pens
    • B43K5/02—Ink reservoirs
    • B43K5/14—Exchangeable ink cartridges
    • B43K5/145—Exchangeable ink cartridges with valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K5/00—Pens with ink reservoirs in holders, e.g. fountain-pens
    • B43K5/18—Arrangements for feeding the ink to the nibs
    • B43K5/1818—Mechanical feeding means, e.g. valves; Pumps
    • B43K5/1827—Valves
    • B43K5/1836—Valves automatically closing
    • B43K5/1845—Valves automatically closing opened by actuation of the writing point
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K7/00—Ball-point pens
    • B43K7/02—Ink reservoirs; Ink cartridges
    • B43K7/03—Ink reservoirs; Ink cartridges pressurised, e.g. by gas

Definitions

  • the invention relates to a writing device according to the preamble of claim 1
  • a writing device according to the preamble of claim 1
  • known devices of this type US-A-3 561 881, FR-A-517 883
  • the writing liquid flows out of the writing tube without pressure under the force of gravity alone. This can easily lead to blockages of the writing tube and, especially when the writing fluid runs out, to uneven writing.
  • the valve seat of these devices is relatively large and blunt, so that sealing problems occur and a safe lifting of the drop weight and the associated flow of the writing fluid is hindered.
  • a pen is also known (US-A-2 783488), in which a writing tip made of felt is provided and the felt is constantly soaked with writing fluid.
  • a writing tube with valve seat and a drop weight, which acts as a valve body, are not available with this pen.
  • the writing fluid is not under the pressure of a gas.
  • the writing device shown in the drawing consists of a storage tank 1, on one end of which the actual writing instrument in the form of a housing 2 is screwed by means of a threaded connection 3.
  • the tank 1, which is hermetically sealed on all sides, contains a supply of ink or another writing liquid 4 and a propellant gas 5, which is introduced into the tank in a small amount in the form of a so-called “liquid gas” together with the writing liquid 4.
  • a halogenated hydrocarbon such as "Frigen” or the like is suitable as the propellant.
  • the propellant gas 5 is constantly contained in the storage tank 1 and is under its own vapor pressure, which is preferably between about 100,000 and 500,000 Pa (1 and 5 bar), in particular 100,000 and 300,000 Pa (1 and 3 bar), at room temperature .
  • a writing tube 6 is firmly inserted in a manner known per se, in the axial bore of which a needle 7 of smaller diameter than the diameter of the bore is freely displaceable.
  • the needle 7 projects approximately 0.2 mm beyond the free end of the writing tube 6.
  • the needle 7 is also firmly connected in a known manner to a falling weight 8 which can be freely moved in the housing 2.
  • the drop weight 8 moves back and forth with the needle 7 attached to it, so that dried-on ink at the tip of the writing tube 6 can be released.
  • the drop weight 8 is in the embodiment shown under the action of a compression spring 9, which biases the drop weight 7 towards the writing tube 6.
  • this compression spring is not absolutely necessary for the operation of the writing device.
  • a plug 11 which is clamped into the housing 2 with a snap action, serves as the counter bearing for the compression spring 9.
  • the housing 2 has an annular gap-shaped opening 12 between the housing wall and the security plug 11, which is directed towards the storage tank 1.
  • the opening 12 continues through recesses 13 of the locking plug 11 into a plurality of capillary gaps 14 between the wall 15 of the housing 2 and the outside of the drop weight 8 up to the central bore of the writing tube 6, where the writing fluid between the inner wall of the writing tube and the needle 7, supported by capillary action until it flows to the nib 16 in order to exit there.
  • the storage tank 1 contains at its end connected to the housing 2 a closure valve in the form of a sealing ball 17 made of rubber or another elastomeric material.
  • a closure valve in the form of a sealing ball 17 made of rubber or another elastomeric material.
  • the sealing ball 17 in order to fulfill its locking function on the tank 1, snaps into a locking groove 18 formed on the tank.
  • the sealing ball becomes 17 is pushed out of the locking groove by the securing plug 11, which is firmly seated in the housing 2, so that it assumes the position shown in FIG. 1, in which the inlet opening 12 of the housing 2 communicates with an outlet opening 19 of the tank 1.
  • the writing liquid 4 can pass from the storage tank 1 into the housing 2 and from there reach the writing tip 16 in the manner already described.
  • the end of the writing tube 6 lying inside the housing 2 has the shape a roof-like chamfered cutting edge 21, which serves as a valve seat.
  • a sealing element 22 is arranged as a valve body in a corresponding recess, which is pressed against the ring cutting edge 21 in a sealing manner when the writing device is not in use under the effect of the propellant gas pressure and the compression spring 9.
  • the valve consisting of the parts 21, 22 ensures that the writing liquid under the pressure of the propellant gas is reliably prevented from flowing out.
  • the valve is opened without any problems.
  • the valve closes immediately under the action of the propellant gas pressure and the compression spring 9.
  • the drop weight 8 is guided on the inner surface of the housing 2 provided with the capillary gaps 14 (FIG. 3).
  • a capillary sponge 23 for example in the form of a foamed plastic, is arranged in front of the outlet opening 19.
  • the sponge 23 constantly soaks up writing liquid and ensures that this liquid passes into the outlet opening 19 under the action of the propellant gas 5, so that even the last remnants of the writing liquid can be used.
  • the writing device shown and described is not only suitable for use in an almost vertical position, in which the space filled with propellant gas 5 is located on the left side of the storage tank 1 in FIG. 1.
  • the writing device can, in particular, as shown in FIG. 1, be used largely horizontally on steeply standing drawing boards or the like, in which case the space filled with propellant gas has the position shown in FIG. 1.
  • the capillary sponge 23, which is always filled with colored liquid proves to be favorable with regard to the transfer of the writing liquid 4 under the action of the propellant gas 5 from the storage tank 1 into the housing 2 and the writing tube 6.
  • the capillary sponge 23 is held firmly by a fastening disk 25, which is provided with openings 24 and bears against the inner wall of the storage tank 1 with low tension.
  • the writing fluid can enter the capillary sponge 23 via the openings 24.
  • the sealing ball 17 is held between the locking plug 1 and the annular capillary sponge 23.
  • the sealing ball 17 could also be pushed freely into the tank interior when the housing 2 is joined to the tank 1, where it then floats freely on the surface of the writing fluid supply.
  • the writing device described so far essentially consists of the cartridge-like storage tank 1 and the housing 2. After the writing liquid in the tank 1 has been used up, the empty tank is unscrewed and replaced with a new, full tank. In another embodiment, the tank 1 is permanently and permanently connected to the housing 2. After the writing fluid has been used up, the entire unit is thrown away. In this case, the sealing ball 17 is omitted.
  • the storage tank 1 is, as can also be seen from Fig. 1, with a z. B. welded lid 26 closed.
  • the cover 26 is applied after the writing liquid 4 and the (liquid) propellant gas 5 have been introduced.
  • the end of the storage tank 1 which has not yet been closed by the cover 26 also enables the insertion of the sealing ball 17, the capillary sponge 23 and the fastening disk 25.
  • An O-ring 27 serves to seal between the storage tank 1 and the housing 2.
  • the diameter of the ring cutter 21 is particularly important to make the diameter of the ring cutter 21 as small as possible, for example about 0.4 mm, so that the force required to close and open the valve is also low. Since the writing tube 6 has a small diameter from the start, it is therefore advantageous to design the valve in the form of the mentioned annular cutting edge 21 directly at the end of the writing tube 6 lying in the housing 2 and as the valve body the free front end provided with the sealing element 22 Take advantage of falling weight 8.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pens And Brushes (AREA)
  • Facsimile Heads (AREA)
  • Holo Graphy (AREA)
  • Noodles (AREA)

Abstract

The invention relates to a writing device comprising a storage tank for Indian ink or another writing medium, a housing which is open in the direction of the tank, a tubular pen which is arranged on the housing, a needle which is axially displaceable in the tubular pen, and a drop weight member which is attached to the needle and is displaceable in the interior of the housing. The tank contains a propellant which is subjected to its own vapor pressure and acts directly on the writing medium, and the end of the tubular pen located in the interior of the housing is designed as a valve seat onto which a valve body formed on the oppositely located end of the drop weight member can be sealingly positioned.

Description

Die Erfindung betrifft eine Schreibvorrichtung nach dem Oberbegriff des Patentanspruchs 1 Bei bekannten Vorrichtungen dieser Art (US-A-3 561 881, FR-A-517 883) fließt die Schreibflüssigkeit drucklos allein unter Schwerkraftwirkung aus dem Schreibrohr aus. Dies kann leicht zu Verstopfungen des Schreibrohres und insbesondere bei zu Ende gehender Schreibflussigkeit zu ungleichmäßiger Schrift führen. Außerdem ist der Ventilsitz dieser Vorrichtungen verhältnismäßig großflächig und stumpf ausgebildet, so daß Dichtungsprobleme auftreten sowie ein sicheres Abheben des Fallgewichtes und damit verbunden ein gleichmäßiger Fluß der Schreibflüssigkeit behindert ist.The invention relates to a writing device according to the preamble of claim 1 In known devices of this type (US-A-3 561 881, FR-A-517 883), the writing liquid flows out of the writing tube without pressure under the force of gravity alone. This can easily lead to blockages of the writing tube and, especially when the writing fluid runs out, to uneven writing. In addition, the valve seat of these devices is relatively large and blunt, so that sealing problems occur and a safe lifting of the drop weight and the associated flow of the writing fluid is hindered.

Es ist auch schon bekannt (US-A-3 788 753), die Schreibflüssigkeit dem Druck eines Flüssiggases auszusetzen, jedoch reicht auch dies zur Gewährleistung eines gleichmäßigen Flusses der Schreibflüssigkeit noch nicht aus.It is also already known (US-A-3 788 753) to expose the writing liquid to the pressure of a liquid gas, but this is still not sufficient to ensure a uniform flow of the writing liquid.

Es ist ferner ein Schreibstift bekannt (US-A-2 783488), bei dem eine Schreibspitze aus Filz vorgesehen ist, und der Filz sich ständig mit Schreibflüssigkeit vollsaugt. Ein Schreibrohr mit Ventilsitz sowie ein Fallgewicht, welches als Ventilkörper wirkt, sind bei diesem Schreibstift nicht vorhanden. Außerdem steht dort auch die Schreibflüssigkeit nicht unter dem Druck eines Gases.A pen is also known (US-A-2 783488), in which a writing tip made of felt is provided and the felt is constantly soaked with writing fluid. A writing tube with valve seat and a drop weight, which acts as a valve body, are not available with this pen. In addition, the writing fluid is not under the pressure of a gas.

Es ist Aufgabe der Erfindung, eine gattungsgemäße Schreibvorrichtung so zu verbessern, daß bei kleinstem apparativem Aufwand ein gleichmäßiger Fluß der Schreibflüssigkeit beim Schreiben sichergestellt ist.It is the object of the invention to improve a generic writing device in such a way that a uniform flow of the writing liquid is ensured when writing with the least expenditure on equipment.

Die Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale des Patentanspruchs 1 gelöst.The object is achieved by the characterizing features of claim 1.

Die nachstehende Beschreibung einer bevorzugten Ausführungsform der Erfindung dient im Zusammenhang mit beiliegender Zeichnung der weiteren Erläuterung. Es zeigen:

  • Fig. 1 eine Längsschnittansicht einer Tusche-Schreibvorrichtung;
  • Fig. 2 eine vergrößerte Schnittdarstellung im Bereich A der Fig. 1 und
  • Fig. 3 eine Querschnittsansicht entlang der Linie 3-3 in Fig. 2.
The following description of a preferred embodiment of the invention serves in conjunction with the accompanying drawings for further explanation. Show it:
  • Fig. 1 is a longitudinal sectional view of an ink writing device;
  • Fig. 2 is an enlarged sectional view in area A of Fig. 1 and
  • 3 is a cross-sectional view taken along line 3-3 in FIG. 2.

Die auf der Zeichnung dargestellte Schreibvorrichtung besteht aus einem Vorratstank 1, auf dessen eines Ende das eigentliche Schreibgerät in Gestalt eines Gehäuses 2 mittels einer Gewindeverbindung 3 aufgeschraubt ist. Der allseits hermetisch verschlossene Tank 1 enthält einen Vorrat an Tusche oder einer anderen Schreibflüssigkeit 4 sowie ein Treibgas 5, welches in Form eines sogenannten "Flüssiggases" in geringer Menge zusammen mit der Schreibflüssigkeit 4 in den Tank eingebracht wird. Als Treibgas eignet sich beispielsweise ein Halogen-Kohlenwasserstoff wie "Frigen" oder dergleichen. Das Treibgas 5 ist ständig im Vorratstank 1 enthalten und steht unter seinem eigenen Dampfdruck, der vorzugsweise zwischen etwa 100 000 und 500 000 Pa (1 und 5 bar), insbesondere 100 000 und 300 000 Pa (1 und 3 bar), bei Raumtemeperatur beträgt.The writing device shown in the drawing consists of a storage tank 1, on one end of which the actual writing instrument in the form of a housing 2 is screwed by means of a threaded connection 3. The tank 1, which is hermetically sealed on all sides, contains a supply of ink or another writing liquid 4 and a propellant gas 5, which is introduced into the tank in a small amount in the form of a so-called "liquid gas" together with the writing liquid 4. A halogenated hydrocarbon such as "Frigen" or the like is suitable as the propellant. The propellant gas 5 is constantly contained in the storage tank 1 and is under its own vapor pressure, which is preferably between about 100,000 and 500,000 Pa (1 and 5 bar), in particular 100,000 and 300,000 Pa (1 and 3 bar), at room temperature .

In das freie Ende des Gehäuses 2 ist in an sich bekannter Weise ein Schreibrohr 6 fest eingesetzt, in dessen axialer Bohrung eine Nadel 7 kleineren Durchmessers als der Durchmesser der Bohrung frei verschieblich ist. Die Nadel 7 steht bei Nichtgebrauch der Schreibvorrichtung ca. 0,2 mm über das freie Ende des Schreibrohres 6 vor. Die Nadel 7 ist in ebenfalls bekannter Weise mit einem frei im Gehäuse 2 verschieblichen Fallgewicht 8 fest verbunden. Beim Schütteln der Schreibvorrichtung bewegt sich das Fallgewicht 8 mit der daran befestigten Nadel 7 hin und her, so daß eingetrocknete Tusche an der Schreibspitze des Schreibrohres 6 gelöst werden kann. Das Fallgewicht 8 steht bei der dargestellten Ausführungsform unter der Wirkung einer Druckfeder 9, die das Fallgewicht 7 zum Schreibrohr 6 hin vorspannt. Für die Wirkungsweise der Schreibvorrichtung ist diese Druckfeder jedoch nicht unbedingt erforderlich. Als Gegenlager für die Druckfeder 9 dient ein Stopfen 11, der mit Schnappwirkung in das Gehäuse 2 eingespannt ist.In the free end of the housing 2, a writing tube 6 is firmly inserted in a manner known per se, in the axial bore of which a needle 7 of smaller diameter than the diameter of the bore is freely displaceable. When the writing device is not in use, the needle 7 projects approximately 0.2 mm beyond the free end of the writing tube 6. The needle 7 is also firmly connected in a known manner to a falling weight 8 which can be freely moved in the housing 2. When the writing device is shaken, the drop weight 8 moves back and forth with the needle 7 attached to it, so that dried-on ink at the tip of the writing tube 6 can be released. The drop weight 8 is in the embodiment shown under the action of a compression spring 9, which biases the drop weight 7 towards the writing tube 6. However, this compression spring is not absolutely necessary for the operation of the writing device. A plug 11, which is clamped into the housing 2 with a snap action, serves as the counter bearing for the compression spring 9.

Wie dargestellt, weist das Gehäuse 2 eine zum Vorratstank 1 hin gerichtete, ringspaltförmige Öffnung 12 zwischen Gehäusewand und Sicherungsstopfen 11 auf. Die Öffnung 12 setzt sich über Ausnehmungen 13 des Sicherungsstopfens 11 in mehrere Kapillarspalten 14 zwischen der Wand 15 des Gehäuses 2 und der Außenseite der Fallgewichts 8 bis zur Mittelbohrung des Schreibrohres 6 hin fort, wo die Schreibflüssigkeit zwischen der Innenwand des Schreibrohres und der Nadel 7, unterstützt durch Kapillarwirkung, bis zur Schreibspitze 16 fließt, um dort auszutreten.As shown, the housing 2 has an annular gap-shaped opening 12 between the housing wall and the security plug 11, which is directed towards the storage tank 1. The opening 12 continues through recesses 13 of the locking plug 11 into a plurality of capillary gaps 14 between the wall 15 of the housing 2 and the outside of the drop weight 8 up to the central bore of the writing tube 6, where the writing fluid between the inner wall of the writing tube and the needle 7, supported by capillary action until it flows to the nib 16 in order to exit there.

Der Vorratstank 1 enthält an seinem mit dem Gehäuse 2 verbundenen Ende ein Verschlußventil in Gestalt einer Abdichtkugel 17 aus Gummi oder einem anderen elastomeren Material. Solange der Tank 1 noch nicht mit dem Gehäuse 2 verschraubt ist, liegt die Abdichtkugel 17, um ihre Verschlußfunktion am Tank 1 zu erfüllen, mit Schnappwirkung abdichtend in einer am Tank ausgebildeten Sperrnut 18. Beim Verschrauben des Tanks 1 mit dem Gehäuse 2 wird die Abdichtkugel 17 durch den fest im Gehäuse 2 sitzenden Sicherungsstopfen 11 aus der Sperrnut herausgedrückt, so daß sie die in Fig. 1 dargestellte Lage einnimmt, in welcher die Eintrittsöffnung 12 des Gehäuses 2 mit einer Austrittsöffnung 19 des Tanks 1 in Verbindung steht. Somit kann die Schreibflüssigkeit 4 unter der direkten Wirkung des Treibgases 5 aus dem Vorratstank 1 in das Gehäuse 2 übertreten und von da auf dem bereits beschriebenen Wege zur Schreibspitze 16 gelangen.The storage tank 1 contains at its end connected to the housing 2 a closure valve in the form of a sealing ball 17 made of rubber or another elastomeric material. As long as the tank 1 is not yet screwed to the housing 2, the sealing ball 17, in order to fulfill its locking function on the tank 1, snaps into a locking groove 18 formed on the tank. When screwing the tank 1 to the housing 2, the sealing ball becomes 17 is pushed out of the locking groove by the securing plug 11, which is firmly seated in the housing 2, so that it assumes the position shown in FIG. 1, in which the inlet opening 12 of the housing 2 communicates with an outlet opening 19 of the tank 1. Thus, under the direct effect of the propellant gas 5, the writing liquid 4 can pass from the storage tank 1 into the housing 2 and from there reach the writing tip 16 in the manner already described.

Das im Inneren des Gehäuses 2 liegende Stirnende des Schreibrohres 6 hat die Gestalt einer dachartig abgeschrägten Ringschneide 21, die als Ventilsitz dient. Auf dem der Ringschneide 21 gegenüberliegende Ende des Fallgewichtes 8 ist in einer entsprechenden Ausnehmung ein Dichtelement 22 als Ventilkörper angeordnet, das bei Nichtgebrauch der Schreibvorrichtung unter der Wirkung des Treibgasdruckes und der Druckfeder 9 abdichtend gegen die Ringschneide 21 gepresst ist. Wenn im Gebrauch der Schreibvorrichtung die Schreibspitze 16 des Schreibrohres 6 auf das Zeichenpapier aufgesetzt wird, wird die geringfügig aus der Schreibspitze 16 herausragende Nadel 7 nach einwärts verschoben, so daß sich das Dichtelement 22 von der Ringschneide 21 zwangsläufig abhebt und das Ausfließen der Schreibflüssigkeit aus dem Schreibrohr 6 sichergestellt ist. Das aus den Teilen 21, 22 bestehende Ventil sorgt bei Nichtgebrauch der Schreibvorrichtung dafür, daß ein Ausfließen der unter dem Druck des Treibgases stehenden Schreibflüssigkeit zuverlässig verhindert ist. Beim Aufsetzen der Schreibvorrichtung auf die Zeichenfläche wird das Ventil problemlos geöffnet. Beim Abheben der Schreibvorrichtung von der Zeichenfläche schließt sich das Ventil sofort unter der Wirkung des Treibgasdruckes und der Druckfeder 9. Das Fallgewicht 8 wird dabei an der mit den Kapillarspalten 14 versehenen Innenfläche des Gehäuses 2 geführt (Fig. 3).The end of the writing tube 6 lying inside the housing 2 has the shape a roof-like chamfered cutting edge 21, which serves as a valve seat. On the end of the drop weight 8 opposite the ring cutting edge 21, a sealing element 22 is arranged as a valve body in a corresponding recess, which is pressed against the ring cutting edge 21 in a sealing manner when the writing device is not in use under the effect of the propellant gas pressure and the compression spring 9. If, when using the writing device, the writing tip 16 of the writing tube 6 is placed on the drawing paper, the needle 7, which protrudes slightly from the writing tip 16, is shifted inwards, so that the sealing element 22 inevitably lifts off from the ring cutting edge 21 and the outflow of the writing liquid from the Writing tube 6 is ensured. When the writing device is not in use, the valve consisting of the parts 21, 22 ensures that the writing liquid under the pressure of the propellant gas is reliably prevented from flowing out. When the writing device is placed on the drawing surface, the valve is opened without any problems. When the writing device is lifted off the drawing surface, the valve closes immediately under the action of the propellant gas pressure and the compression spring 9. The drop weight 8 is guided on the inner surface of the housing 2 provided with the capillary gaps 14 (FIG. 3).

An der dem Gehäuse 2 zugewandten Seite des Vorratstanks 1 ist vor der Austrittsöffnung 19 ein Kapillarschwamm 23, beispielsweise in Gestalt eines geschäumten Kunststoffes, angeordnet. Der Schwamm 23 saugt sich ständig mit Schreibflüssigkeit voll und gewährleistet ein Übertreten dieser Flüssigkeit in die Austrittsöffnung 19 unter der Wirkung des Treibgases 5, so daß auch letzte Reste der Schreibflüssigkeit genutzt werden können.On the side of the storage tank 1 facing the housing 2, a capillary sponge 23, for example in the form of a foamed plastic, is arranged in front of the outlet opening 19. The sponge 23 constantly soaks up writing liquid and ensures that this liquid passes into the outlet opening 19 under the action of the propellant gas 5, so that even the last remnants of the writing liquid can be used.

Die dargestellte und beschriebene Schreibvorrichtung eignet sich nicht nur für eine Verwendung in nahezu senkrechter Lage, in welcher sich der mit Treibgas 5 gefüllte Raum an der in Fig. 1 links gelegenen Seite des Vorratstanks 1 befindet. Die Schreibvorrichtung kann insbesondere auch, wie in Fig. 1 dargestellt, weitgehend horizontal an steil stehenden Zeichenbrettern oder dergleichen eingesetzt werden, in welchem Fall der mit Treibgas gefüllte Raum die in Fig. 1 gezeichnete Lage hat. Auch im letztgenannten Fall erweist sich der stets mit Farbflüssigkeit gefüllte Kapillarschwamm 23 als günstig mit Bezug auf den Übertritt der Schreibflüssigkeit 4 unter der Wirkung des Treibgases 5 aus dem Vorratstank 1 in das Gehäuse 2 und das Schreibrohr 6.The writing device shown and described is not only suitable for use in an almost vertical position, in which the space filled with propellant gas 5 is located on the left side of the storage tank 1 in FIG. 1. The writing device can, in particular, as shown in FIG. 1, be used largely horizontally on steeply standing drawing boards or the like, in which case the space filled with propellant gas has the position shown in FIG. 1. Also in the latter case, the capillary sponge 23, which is always filled with colored liquid, proves to be favorable with regard to the transfer of the writing liquid 4 under the action of the propellant gas 5 from the storage tank 1 into the housing 2 and the writing tube 6.

Der Kapillarschwamm 23 ist durch eine mit Durchbrechungen 24 versehene Befestigungsscheibe 25, die mit geringer Spannung an der Innenwand des Vorratstanks 1 anliegt, fest gehalten. Ober die Durchbrechungen 24 kann die Schreibflüssigkeit in den Kapillarschwamm 23 eintreten.The capillary sponge 23 is held firmly by a fastening disk 25, which is provided with openings 24 and bears against the inner wall of the storage tank 1 with low tension. The writing fluid can enter the capillary sponge 23 via the openings 24.

Wie in Fig. 1 dargestellt, ist die Abdichtkugel 17 zwischen dem Sicherungsstopfen 1 und dem ringförmigen Kapillarschwamm 23 festgehalten. Die Abdichtkugel 17 könnte jedoch auch beim Zusammenfügen des Gehäuses 2 mit dem Tank 1 frei in den Tankinnenraum gestoßen werden, wo sie dann frei auf der Oberfläche des Schreibflüssigkeitsvorrates schwimmt.As shown in Fig. 1, the sealing ball 17 is held between the locking plug 1 and the annular capillary sponge 23. However, the sealing ball 17 could also be pushed freely into the tank interior when the housing 2 is joined to the tank 1, where it then floats freely on the surface of the writing fluid supply.

Die bisher beschriebene Schreibvorrichtung besteht im wesentlichen aus dem patronenartigen Vorratstank 1 und dem Gehäuse 2. Nach Verbrauch der Schreibflüssigkeit im Tank 1 wird der leere Tank abgeschraubt und gegen einen neuen, vollen Tank ausgewechselt. Bei einer anderen Ausführungsform ist der Tank 1 ständig und unlösbar mit dem Gehäuse 2 verbunden. Nach Verbrauch der Schreibflüssigkeit wird die ganze Einheit weggeworfen. In diesem Fall entfällt die Abdichtkugel 17.The writing device described so far essentially consists of the cartridge-like storage tank 1 and the housing 2. After the writing liquid in the tank 1 has been used up, the empty tank is unscrewed and replaced with a new, full tank. In another embodiment, the tank 1 is permanently and permanently connected to the housing 2. After the writing fluid has been used up, the entire unit is thrown away. In this case, the sealing ball 17 is omitted.

Der Vorratstank 1 ist, wie ebenfalls aus Fig. 1 ersichtlich, mit einem z. B. aufgeschweißten Deckel 26 verschlossen. Der Deckel 26 wird nach dem Einbringen der Schreibflüssigkeit 4 und des (flüssigen) Treibgases 5 aufgebracht. Das noch nicht durch den Deckel 26 verschlossene Ende des Vorratstanks 1 ermöglicht auch das Einführen der Abdichtkugel 17, des Kapillarschwamms 23 und der Befestigungsscheibe 25.The storage tank 1 is, as can also be seen from Fig. 1, with a z. B. welded lid 26 closed. The cover 26 is applied after the writing liquid 4 and the (liquid) propellant gas 5 have been introduced. The end of the storage tank 1 which has not yet been closed by the cover 26 also enables the insertion of the sealing ball 17, the capillary sponge 23 and the fastening disk 25.

Ein O-Ring 27 dient der Abdichtung zwischen Vorratstank 1 und Gehäuse 2.An O-ring 27 serves to seal between the storage tank 1 and the housing 2.

Von besonderer Wichtigkeit ist es, den Durchmesser der Ringschneide 21 möglichst klein, beispielsweise etwa 0,4 mm auszubilden, so daß die zum Verschließen und Öffnen des Ventils erforderliche Kraft ebenfalls gering ist. Da das Schreibrohr 6 von Hause aus einen geringen Durchmesser hat, ist es daher günstig, das Ventil in Form der erwähnten Ringschneide 21 unmittelbar an dem im Gehäuse 2 liegenden Ende des Schreibrohres 6 auszubilden und als Ventilkörper das freie, mit dem Dichtelement 22 versehene Stirnende des Fallgewichts 8 auszunutzen.It is particularly important to make the diameter of the ring cutter 21 as small as possible, for example about 0.4 mm, so that the force required to close and open the valve is also low. Since the writing tube 6 has a small diameter from the start, it is therefore advantageous to design the valve in the form of the mentioned annular cutting edge 21 directly at the end of the writing tube 6 lying in the housing 2 and as the valve body the free front end provided with the sealing element 22 Take advantage of falling weight 8.

Claims (9)

1. Writing device with a storage tank (1) for ink or another writing fluid (4), with a housing (2) open towards the tank (1), with a writing tube (6) disposed on the housing (2), with a needle (7) which is axially displaceable in the writing tube (6), and with, fixed on the needle (7) and displaceable inside the housing, a drop weight (8), the end of the writing tube (6) which is inside the housing (2) being constructed as a valve seat (21) while the end of the drop weight (8) which is opposite the valve seat is constructed as a valve body (22) which can be applied in sealing-tight fashion to the valve seat (21), characterised in that the valve seat (21) takes the form of a sharply edged annular member which is angled over in roof-like fashion and which is of the smallest possible diameter, the valve body comprising a sealing element (22) disposed in a recess in the drop weight (8) while the writing fluid (4) in the tank (1) is subject to the pressure of a propellant gas (5) acting directly on it and taking the form of a liquid gas which is constantly subject to its own vapour pressure.
2. Device according to Claim 1, characterised in that the diameter of the annular member (21) is at most 0.4 mm.
3. Device according to Claim 1 or 2, characterised in that the sealing element (22) consists of an elastomeric material.
4. Device according to Claim 1, 2 or 3, characterised in that the needle (7) and the valve body (22) are coaxial with each other, the needle penetrating the valve body.
5. Device according to one of the preceding Claims, characterised in that storage tank (1) and housing (2) with writing tube (6) are constantly connected rigidly to one another as a disposable unit intended to be used once only.
6. Device according to one of Claims 1 to 4, characterised in that the storage tank (1) is provided with a closure valve (17) and is interchangeably connected to the housing (2) which carries the writing tube (6).
7. Device according to Claim 6, characterised in that the closure valve is constructed as a sealing ball (17).
8. Device according to one of the preceding Claims, characterised in that the drop weight (8) is biased by a spring (9) against the valve seat (21).
9. Device according to one of the preceding Claims, characterised in that on the side of the storage tank (1) which is adjacent the housing (2), where the writing fluid (4) passes through at least one outlet orifice (19) into the housing (2), there is a capillary sponge (23).
EP84116112A 1983-12-31 1984-12-21 Writing device Expired EP0149216B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84116112T ATE34341T1 (en) 1983-12-31 1984-12-21 WRITING DEVICE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833347708 DE3347708A1 (en) 1983-12-31 1983-12-31 WRITING DEVICE
DE3347708 1983-12-31

Publications (3)

Publication Number Publication Date
EP0149216A2 EP0149216A2 (en) 1985-07-24
EP0149216A3 EP0149216A3 (en) 1985-08-21
EP0149216B1 true EP0149216B1 (en) 1988-05-18

Family

ID=6218547

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84116112A Expired EP0149216B1 (en) 1983-12-31 1984-12-21 Writing device

Country Status (5)

Country Link
US (1) US4605331A (en)
EP (1) EP0149216B1 (en)
JP (1) JPS60159097A (en)
AT (1) ATE34341T1 (en)
DE (1) DE3347708A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61152484U (en) * 1985-03-14 1986-09-20
US5073058A (en) * 1989-05-17 1991-12-17 Kabushiki Kaisha Sakura Kurepasu Implement for applying liquid
DE4013011C1 (en) * 1990-04-24 1991-03-14 Rotring-Werke Riepe Kg, 2000 Hamburg, De Tubular pen used as writing implement - has buffer chamber between front end of bore and rear end of tube which is checked for ink level by regulator
JP2579661Y2 (en) * 1991-11-28 1998-08-27 ぺんてる株式会社 Small tube writing instrument
CN104129199A (en) * 2014-07-23 2014-11-05 中国人民武装警察部队工程大学 Needle pen insertion leg

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US263389A (en) * 1882-08-29 Edmund coffin
US238024A (en) * 1881-02-22 Feancis
US948832A (en) * 1909-06-01 1910-02-08 Leon Trotzky Stylographic pen.
US1033520A (en) * 1912-04-06 1912-07-23 Antoni Bator Envelop-moistening device.
US1166896A (en) * 1915-09-02 1916-01-04 Christopher A Garvey Fountain-brush.
FR517883A (en) * 1918-10-25 1921-05-14 Hermann Burkhardt Reservoir stylograph
US2029152A (en) * 1934-09-22 1936-01-28 Teofil L Bonkowski Ink eradicating device
DE689598C (en) * 1937-03-03 1940-03-28 Montblanc Simplo Gmbh Fountain pen with writing wire attached to a drop weight and passed through a writing tube
CH288459A (en) * 1951-01-18 1953-01-31 Gogniat Bono Georgette Stylograph.
US2783488A (en) * 1956-02-27 1957-03-05 Harry W Jockers Marking pens
US3003182A (en) * 1959-08-13 1961-10-10 Speedry Chemical Products Inc Fountain pens
US3233275A (en) * 1963-09-18 1966-02-08 Sheaffer W A Pen Co Writing implement
US3228057A (en) * 1964-03-09 1966-01-11 Walter B Sprague Combination applicator brush and dispenser
US3425779A (en) * 1966-09-01 1969-02-04 Paul C Fisher Pressurized marking instrument
DE1561866A1 (en) * 1967-03-25 1970-04-02 Pelikan Werke Wagner Guenther Cartridge filler holder
US3561881A (en) * 1969-05-07 1971-02-09 Edward Bok Stylographic pen with the capillary passage cleaning means operable by hand or by shaking or contact
NL7008747A (en) * 1970-06-15 1971-12-17
US3706099A (en) * 1970-12-14 1972-12-12 Varian Associates Graphic recorder employing a reservoir lettering pen type stylus
JPS4960831U (en) * 1972-09-11 1974-05-28
US3788753A (en) * 1973-03-19 1974-01-29 S Stewart Elongated liquid marker
JPS565676U (en) * 1979-06-28 1981-01-19
DE3041277C2 (en) * 1980-11-03 1983-03-31 Fa. J.S. Staedtler, 8500 Nürnberg Writing unit for automatic typewriters or drawing machines

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Taschenbuch für Heizung und Klimatechnik 86/87, Hönmann und Sprenger, Seite 149, 150, 1471 *

Also Published As

Publication number Publication date
JPS60159097A (en) 1985-08-20
DE3347708A1 (en) 1985-07-11
US4605331A (en) 1986-08-12
EP0149216A3 (en) 1985-08-21
JPH0351240B2 (en) 1991-08-06
ATE34341T1 (en) 1988-06-15
EP0149216A2 (en) 1985-07-24

Similar Documents

Publication Publication Date Title
DE69227441T3 (en) Ink supply cartridge and container therefor
DE10116429A1 (en) Device for filling ink tanks
DE911711C (en) Fountain pen with writing tube
DE1425510B2 (en) Pressure vessels, in particular for the supply of lubricant
EP0149216B1 (en) Writing device
EP0765769A2 (en) Writing instrument, especially a fountain pen
EP0867219A1 (en) Liquid carbonating apparatus
DE2517679B2 (en) FILLING NIPPLE ARRANGEMENT FOR FILLING IN OR LEAKING A PRESSURE EQUIPMENT INTO THE OR FROM THE PRESSURE ROOM OF A HYDRAULIC CHAIN TENSIONING DEVICE ON TRACKED VEHICLES
DE1948492A1 (en) Gas filling container for filling gas lighters
DE2216706A1 (en) INK CARTRIDGE FOR TUBE PEN
DE1291257B (en) Writing instrument
DE3009169C2 (en) Writing fluid tank
EP0089067B1 (en) Ink reservoir or cartridge for a stylus
EP0110207A2 (en) Writing implement
DE1040297B (en) Fill valve on lighters
DE102008057574A1 (en) Dispensing device for a liquid, in particular beverage dispenser
DE3009100C2 (en) Writing implement
DE3910787C1 (en)
EP0248169A1 (en) Writing instrument
DE19817173C1 (en) Flushing feed for medical instruments
DE3433496A1 (en) Valve which can be operated in an upside down position for distribution of a pressurised liquid
DE3525313C2 (en)
DE202022100294U1 (en) Device for producing, storing and dispensing creamy, emulsifiable fluids
DE202004002563U1 (en) Paint cup for a paint spray gun comprises a valve arrangement which has at least one flexible section sealing the cup opening as long as the pressure inside the cup is not less than the pressure outside the cup
DE1209381B (en) Stopcock with exchangeable measuring orifice

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): AT CH FR GB IT LI NL SE

AK Designated contracting states

Designated state(s): AT CH FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19860116

17Q First examination report despatched

Effective date: 19861210

D17Q First examination report despatched (deleted)
ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO MILANO S.P.A.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH FR GB IT LI NL SE

REF Corresponds to:

Ref document number: 34341

Country of ref document: AT

Date of ref document: 19880615

Kind code of ref document: T

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19901031

Year of fee payment: 7

Ref country code: CH

Payment date: 19901031

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19901127

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19901128

Year of fee payment: 7

Ref country code: AT

Payment date: 19901128

Year of fee payment: 7

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19901231

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19911221

Ref country code: AT

Effective date: 19911221

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19911222

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19911231

Ref country code: CH

Effective date: 19911231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19920701

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19920831

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

EUG Se: european patent has lapsed

Ref document number: 84116112.8

Effective date: 19920704