EP0539747A1 - Writing or drawing implement - Google Patents

Writing or drawing implement Download PDF

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Publication number
EP0539747A1
EP0539747A1 EP92116716A EP92116716A EP0539747A1 EP 0539747 A1 EP0539747 A1 EP 0539747A1 EP 92116716 A EP92116716 A EP 92116716A EP 92116716 A EP92116716 A EP 92116716A EP 0539747 A1 EP0539747 A1 EP 0539747A1
Authority
EP
European Patent Office
Prior art keywords
writing
storage space
suction pump
fluid
writing fluid
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.)
Granted
Application number
EP92116716A
Other languages
German (de)
French (fr)
Other versions
EP0539747B1 (en
Inventor
Walter Jozat
Steffen Wünsche
Ronald Broers
Thomas Hentze
Horst Eising
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.)
Rotring International GmbH and Co KG
Original Assignee
Rotring Werke Riepe KG
Rotring International GmbH and Co KG
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.)
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Publication date
Application filed by Rotring Werke Riepe KG, Rotring International GmbH and Co KG filed Critical Rotring Werke Riepe KG
Priority to AT92116716T priority Critical patent/ATE104217T1/en
Publication of EP0539747A1 publication Critical patent/EP0539747A1/en
Application granted granted Critical
Publication of EP0539747B1 publication Critical patent/EP0539747B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • B43K5/189—Pumps
    • 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
    • B43K8/22—Pens with writing-points other than nibs or balls with electrically or magnetically activated writing-points

Definitions

  • the invention relates to a writing or drawing device with a housing, at the front end of which a writing tip is provided, the rear area of which is connected to a writing liquid storage space provided in the housing interior, which is connected to the ambient air via a capillary pressure compensation system.
  • Such writing and drawing devices are known in various forms, for example as so-called tube recorders, in which the writing tip consists of a writing tube to which ink can be supplied from an ink cartridge which is attached to the part of the housing carrying the writing tube.
  • a capillary pressure compensation chamber Via a capillary pressure compensation chamber, which is connected at one end to the ambient air and at its other end in connection with the interior of the housing containing the ink, pressure equalization is brought about, so that when ink is used, no negative pressure is established in the ink storage room , which would hinder another ink dispensing by the writing tube.
  • the pressure compensation chamber also serves to hold ink when there is overpressure in the ink storage room.
  • a writing or drawing device of the type mentioned is designed in accordance with the invention in such a way that a sensor that reacts to writing fluid is provided in the pressure compensation system, that the writing fluid storage space has a semi-permeable membrane that is permeable to air and impermeable to writing fluid is connected to a suction pump and that the sensor activates the suction pump when influenced by writing fluid.
  • the writing or drawing device contains a suction pump which is connected to the writing liquid storage space via a semi-permeable membrane, so that when the suction pump is activated, air is sucked out of the writing liquid storage space while writing liquid cannot pass through the semi-permeable membrane.
  • This suctioning off of the air results in a rapid lowering of the pressure in the writing liquid storage space, so that the excess pressure, for example caused by an increase in temperature, is reduced in a very short time and the normal operating state is restored.
  • the suction pump is controlled by a sensor that responds to an increased filling of the pressure compensation system caused by excess pressure and activates the suction pump, which then sucks air at least until the level in the pressure compensation system has decreased sufficiently that the sensor no longer being affected.
  • the semi-permeable membrane is in the form of a hose which extends into the writing liquid storage space and whose free end is closed, while the other end is connected to the suction pump.
  • a hose ensures that air can be extracted not only directly at the connection point between the suction pump and the writing liquid storage space, but also from other areas of the writing liquid storage space. This is particularly advantageous when the writing or drawing device is in a somewhat inclined position, in which, for example, writing fluid is present in the connection area between the suction pump and the writing fluid storage space.
  • the other end of the hose facing away from the free end of the hose can sit on a tubular connecting piece which extends through a wall delimiting the writing liquid storage space.
  • the writing or drawing device partially shown in section has a holder-shaped housing 1, at the front end of a detachable housing part a schematically illustrated writing tip 2, which has the shape of a writing tube, a fiber tip, a writing or drawing pen or the like. may have been arranged.
  • the inner end of the writing tip 2 is not in illustrated manner connected to the interior of the housing 1 forming the writing fluid storage space 3, in which the writing fluid 4, such as ink or ink, is located.
  • a capillary pressure compensation chamber 5 is provided in the wall of the housing 1 in a manner customary for such writing instruments, the front end of which is connected to the writing liquid storage space 3 and the rear end of which is connected to the ambient air.
  • a sensor 7 in the latter which consists, for example, of a temperature-dependent resistor, of a capacitive sensor or the like. can exist.
  • the writing fluid reservoir 3 is closed at the rear end by a transverse wall 6 through which a pipe socket 9 extends.
  • the housing 1 On the side of the transverse wall 6 facing away from the writing liquid storage space 3, the housing 1 forms a further interior space 8 in which a suction pump 11 with a drive motor 12, an electronic circuit arrangement 13 controlling the operation of the drive motor 12 and a battery 14 feeding the motor 12 are accommodated.
  • the suction pump 11 has a maximum delivery rate of 0.1 mL air / minute.
  • the circuit arrangement 13 is coupled to the sensor 7 via a line connection indicated by dashed lines and evaluates signals from the latter in the usual way.
  • a hose 10 is plugged onto the nozzle 9, which is closed at the end facing away from the nozzle 9 and which forms a semi-permeable membrane through which air can pass, but which retains liquid.
  • a tube made of polytetrafluoroethylene with a pore size of 0.2 ⁇ m to 0.45 ⁇ m is suitable as the material for this.
  • writing fluid 4 escapes into the pressure compensation chamber 5 until writing fluid in the area of the sensor 7 or comes into contact with this.
  • the sensor 7 then sends a signal to the circuit arrangement 13, which activates the motor 12 of the suction pump 11, so that the suction pump 11 sucks air out of the writing liquid storage space 3 via the connection piece 9 and the hose 10 acting as a semi-permeable membrane.
  • the sensor 7 therefore sends a signal to the circuit arrangement 13, which indicates the drop in the liquid level in the pressure compensation chamber 5, so that the operation of the suction pump 11 can be interrupted again.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pens And Brushes (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)

Abstract

A writing or drawing instrument wherein a housing (1), is provided with a writing point (2) and a writing fluid reservoir (3) within an interior space of the housing. A capillary pressure equalization system (5), that connects the reservoir with the ambient air, has a sensor (7) therein for reacting to the level of writing fluid (4) therein. A suction pump (11, 12) is connected with the writing fluid reservoir (3) through a semi-permeable membrane (10) which lets air through and is impermeable for writing fluid (4). The suction pump (11, 12) is activated by the sensor (7) in response to a level of writing fluid (4) in the pressure equalization system, and aspirates air from the reservoir so as to quickly reduce an overpressure condition.

Description

Die Erfindung bezieht sich auf ein Schreib- oder Zeichengerät mit einem Gehäuse, an dessen vorderem Ende eine Schreibspitze vorgesehen ist, deren hinterer Bereich mit einem im Gehäuseinnenraum vorgesehenen Schreibflüssigkeitsvorratsraum in Verbindung steht, der über ein kapillares Druckausgleichssystem mit der Umgebungsluft verbunden ist.The invention relates to a writing or drawing device with a housing, at the front end of which a writing tip is provided, the rear area of which is connected to a writing liquid storage space provided in the housing interior, which is connected to the ambient air via a capillary pressure compensation system.

Derartige Schreib- und Zeichengeräte sind in unterschiedlichen Formen bekannt, etwa als sogenannte Röhrchenschreiber, bei denen die Schreibspitze aus einem Schreibröhrchen besteht, dem aus einer Tuschepatrone, die auf den das Schreibröhrchen tragenden Teil des Gehäuses aufgesteckt ist, Tusche zugeführt werden kann. Über eine kapillare Druckausgleichskammer, die mit ihrem einen Ende mit der Umgebungsluft verbunden ist und die mit ihrem anderen Ende in Verbindung mit dem die Tusche enthaltenden Innenraum des Gehäuses steht, wird ein Druckausgleich bewirkt, so daß sich bei Verbrauch von Tusche im Tuschevorratsraum kein Unterdruck einstellt, der eine weitere Tuscheabgabe durch das Schreibröhrchen behindern würde. Darüber hinaus dient die Druckausgleichskammer auch dazu, Tusche aufzunehmen, wenn sich im Tuschevorratsraum ein Überdruck einstellt. Gerade dieser Fall ist bei Schreib- und Zeichengeräten der interessierenden Art von ganz besonderer Bedeutung, weil der die Schreibflüssigkeit enthaltende Raum zusätzlich auch Luft enthält, die sich bei einer Temperaturerhöhung weit stärker ausdehnt als die Schreibflüssigkeit. Dadurch entsteht ein erheblicher Überdruck, und es wird eine verhältnismäßig große Menge Schreibflüssigkeit in die Druckausgleichskammer gepreßt. Dies kann dazu führen, daß Schreibflüssigkeit aus dem mit der Umgebungsluft in Verbindung stehenden Ende der Druckausgleichskammer austritt und so eine Verschmutzung bewirkt.Such writing and drawing devices are known in various forms, for example as so-called tube recorders, in which the writing tip consists of a writing tube to which ink can be supplied from an ink cartridge which is attached to the part of the housing carrying the writing tube. Via a capillary pressure compensation chamber, which is connected at one end to the ambient air and at its other end in connection with the interior of the housing containing the ink, pressure equalization is brought about, so that when ink is used, no negative pressure is established in the ink storage room , which would hinder another ink dispensing by the writing tube. In addition, the pressure compensation chamber also serves to hold ink when there is overpressure in the ink storage room. This is the case is of particular importance in writing and drawing devices of the type of interest because the space containing the writing fluid also contains air which expands much more than the writing fluid when the temperature rises. This creates a considerable overpressure and a relatively large amount of writing fluid is pressed into the pressure compensation chamber. This can lead to writing fluid escaping from the end of the pressure compensation chamber which is connected to the ambient air and thus causing contamination.

Es ist Aufgabe der Erfindung, ein Schreib- oder Zeichengerät derart auszubilden, daß bei einer Erhöhung des Drucks im Schreibflüssigkeitsvorratsraum das Druckausgleichssystem nur bis zu einem vorgegebenen Füllstand mit Schreibflüssigkeit gefüllt wird.It is an object of the invention to design a writing or drawing device in such a way that when the pressure in the writing fluid reservoir increases, the pressure compensation system is filled with writing fluid only up to a predetermined fill level.

Zur Lösung dieser Aufgabe wird ein Schreib- oder Zeichengerät der eingangs erwähnten Art erfindungsgemäß derart ausgestaltet, daß im Druckausgleichssystem ein auf Schreibflüssigkeit reagierender Sensor vorgesehen ist, daß der Schreibflüssigkeitsvorratsraum über eine semi-permeable Membran, die für Luft durchlässig und für Schreibflüssigkeit undurchlässig ist, mit einer Absaugpumpe in Verbindung steht und daß der Sensor bei Beeinflussung durch Schreibflüssigkeit die Ansaugpumpe aktiviert.To solve this problem, a writing or drawing device of the type mentioned is designed in accordance with the invention in such a way that a sensor that reacts to writing fluid is provided in the pressure compensation system, that the writing fluid storage space has a semi-permeable membrane that is permeable to air and impermeable to writing fluid is connected to a suction pump and that the sensor activates the suction pump when influenced by writing fluid.

Das erfindungsgemäße Schreib- oder Zeichengerät enthält eine Absaugpumpe, die über eine semi-permeable Membran mit dem Schreibflüssigkeitsvorratsraum verbunden ist, so daß bei Aktivierung der Absaugpumpe aus dem Schreibflüssigkeitsvorratsraum Luft abgesaugt wird, während Schreibflüssigkeit nicht durch die semi-permeable Membran hindurchtreten kann. Dieses Absaugen der Luft hat eine schnelle Absenkung des Drucks im Schreibflüssigkeitsvorratsraum zur Folge, so daß sich in kürzester Zeit der beispielsweise durch Temperaturerhöhung entstandene Überdruck abbaut und der normale Betriebszustand wieder eingestellt wird.The writing or drawing device according to the invention contains a suction pump which is connected to the writing liquid storage space via a semi-permeable membrane, so that when the suction pump is activated, air is sucked out of the writing liquid storage space while writing liquid cannot pass through the semi-permeable membrane. This suctioning off of the air results in a rapid lowering of the pressure in the writing liquid storage space, so that the excess pressure, for example caused by an increase in temperature, is reduced in a very short time and the normal operating state is restored.

Die Absaugpumpe wird von einem Sensor gesteuert, der bei einer sich durch aufbauenden Überdruck entstehenden, erhöhten Füllung des Druckausgleichssystems anspricht und die Absaugpumpe akitiviert, die dann zumindest so lange Luft absaugt, bis der Füllstand im Druckausgleichssystem ausreichend weit zurückgegangen ist, daß der Sensor nicht mehr beeinflußt wird.The suction pump is controlled by a sensor that responds to an increased filling of the pressure compensation system caused by excess pressure and activates the suction pump, which then sucks air at least until the level in the pressure compensation system has decreased sufficiently that the sensor no longer being affected.

In einer bevorzugten Ausgestaltung der Erfindung hat die semi-permeable Membran die Form eines Schlauches, der sich in den Schreibflüssigkeitsvorratsraum erstreckt und dessen freies Ende geschlossen ist, während dessen anderes Ende in Verbindung mit der Absaugpumpe steht.In a preferred embodiment of the invention, the semi-permeable membrane is in the form of a hose which extends into the writing liquid storage space and whose free end is closed, while the other end is connected to the suction pump.

Durch die Verwendung eines Schlauches wird erreicht, daß Luft nicht nur unmittelbar an der Verbindungsstelle von Absaugpumpe und Schreibflüssigkeitsvorratsraum, sondern auch aus anderen Bereichen des Schreibflüssigkeitsvorratsraums abgesaugt werden kann. Dies ist besonders vorteilhaft dann, wenn sich das Schreib- oder Zeichengerät in einer etwas geneigten Lage befindet, in der beispielsweise Schreibflüssigkeit im Verbindungsbereich von Absaugpumpe und Schreibflüssigkeitsvorratsraum vorhanden ist.The use of a hose ensures that air can be extracted not only directly at the connection point between the suction pump and the writing liquid storage space, but also from other areas of the writing liquid storage space. This is particularly advantageous when the writing or drawing device is in a somewhat inclined position, in which, for example, writing fluid is present in the connection area between the suction pump and the writing fluid storage space.

Das dem freien Ende des Schlauches abgewandte andere Ende des Schlauches kann auf einem rohrförmigen Stutzen sitzen, der sich durch eine den Schreibflüssigkeitsvorratsraum begrenzende Wand erstreckt.The other end of the hose facing away from the free end of the hose can sit on a tubular connecting piece which extends through a wall delimiting the writing liquid storage space.

Die Erfindung wird im folgenden anhand der schematisch ein Ausführungsbeispiel zeigenden Figur näher erläutert.The invention is explained below with reference to the figure schematically showing an embodiment.

Das teilweise im Schnitt dargestellte Schreib- oder Zeichengerät weist ein halterschaftförmiges Gehäuse 1 auf, an dessen vorderem Ende an einen lösbaren Gehäuseteil eine schematisch dargestellte Schreibspitze 2, die die Form eines Schreibröhrchens, einer Faserspitze, einer Schreib- oder Zeichenfeder o.ä. haben kann, angeordnet ist. Das innere Ende der Schreibspitze 2 ist in nicht dargestellter Weise mit dem den Schreibflüssigkeitsvorratsraum 3 bildenden Innneraum des Gehäuses 1 verbunden, in dem sich Schreibflüssigkeit 4, etwa Tinte oder Tusche befindet. Im vorderen Bereich des Schreibflüssigkeitsvorratsraums 3 ist in der Wandung des Gehäuses 1 in für derartige Schreibgeräte üblicher Weise eine kapillare Druckausgleichskammer 5 vorhanden, deren vorderes Ende in Verbindung mit dem Schreibflüssigkeitsvorratsraum 3 und deren hinteres Ende in Verbindung mit der Umgebungsluft steht. In einem Bereich, der dem hinteren Ende der Druckausgleichskammer 5 näher ist als dem vorderen Ende, befindet sich in dieser ein Sensor 7, der beispielsweise aus einem temperaturabhängigen Widerstand, aus einem kapazitiven Sensor o.ä. bestehen kann.The writing or drawing device partially shown in section has a holder-shaped housing 1, at the front end of a detachable housing part a schematically illustrated writing tip 2, which has the shape of a writing tube, a fiber tip, a writing or drawing pen or the like. may have been arranged. The inner end of the writing tip 2 is not in illustrated manner connected to the interior of the housing 1 forming the writing fluid storage space 3, in which the writing fluid 4, such as ink or ink, is located. In the front area of the writing liquid storage space 3, a capillary pressure compensation chamber 5 is provided in the wall of the housing 1 in a manner customary for such writing instruments, the front end of which is connected to the writing liquid storage space 3 and the rear end of which is connected to the ambient air. In a region that is closer to the rear end of the pressure compensation chamber 5 than the front end, there is a sensor 7 in the latter, which consists, for example, of a temperature-dependent resistor, of a capacitive sensor or the like. can exist.

Der Schreibflüssigkeitsvorratsraum 3 ist am hinteren Ende durch eine Querwand 6 geschlossen, durch die sich ein Rohrstutzen 9 erstreckt. An der dem Schreibflüssigkeitsvorratsraum 3 abgewandten Seite der Querwand 6 bildet das Gehäuse 1 einen weiteren Innenraum 8, in dem eine Absaugpumpe 11 mit einem Antriebsmotor 12, eine den Betrieb des Antriebsmotors 12 steuernde elektronische Schaltungsanordnung 13 und eine den Motor 12 speisende Batterie 14 untergebracht sind. Die Absaugpumpe 11 hat eine Förderleistung von maximal 0,1 mL Luft/Minute. Die Schaltungsanordnung 13 ist über eine gestrichelt angedeutete Leitungsverbindung mit dem Sensor 7 gekoppelt und wertet Signale von diesem in üblicher Weise aus.The writing fluid reservoir 3 is closed at the rear end by a transverse wall 6 through which a pipe socket 9 extends. On the side of the transverse wall 6 facing away from the writing liquid storage space 3, the housing 1 forms a further interior space 8 in which a suction pump 11 with a drive motor 12, an electronic circuit arrangement 13 controlling the operation of the drive motor 12 and a battery 14 feeding the motor 12 are accommodated. The suction pump 11 has a maximum delivery rate of 0.1 mL air / minute. The circuit arrangement 13 is coupled to the sensor 7 via a line connection indicated by dashed lines and evaluates signals from the latter in the usual way.

Im Schreibflüssigkeitsvorratsraum 3 ist auf den Stutzen 9 ein Schlauch 10 gesteckt, der am dem Stutzen 9 abgewandten Ende geschlossen ist und der eine semi-permeable Membran bildet, durch die Luft hindurchtreten kann, die jedoch Flüssigkeit zurückhält. Als Material eignet sich hierfür beispielsweise ein Schlauch aus Polytetrafluorethylen mit einer Porengröße von 0,2 µm bis 0,45 µm.In the writing liquid storage space 3, a hose 10 is plugged onto the nozzle 9, which is closed at the end facing away from the nozzle 9 and which forms a semi-permeable membrane through which air can pass, but which retains liquid. A tube made of polytetrafluoroethylene with a pore size of 0.2 µm to 0.45 µm is suitable as the material for this.

Tritt im Betrieb des dargestellten Schreib- oder Zeichengerätes eine Druckerhöhung im Schreibflüssigkeitsvorratsraum 3 auf, etwa dadurch, daß sich die dort vorhandene Luft infolge einer Temperaturerhöhung erheblich ausdehnt, weicht Schreibflüssigkeit 4 in die Druckausgleichskammer 5 aus, bis Schreibflüssigkeit in den Bereich des Sensors 7 bzw. in Berührung mit diesem kommt. Der Sensor 7 gibt dann ein Signal an die Schaltungsanordnung 13, die den Motor 12 der Absaugpumpe 11 aktiviert, so daß die Absaugpumpe 11 über den Stutzen 9 und den als semi-permeable Membran wirkenden Schlauch 10 Luft aus dem Schreibflüssigkeitsvorratsraum 3 absaugt. Dies führt zu einem schnellen Abbau des entstandenen Überdrucks, und der Füllstand in der Druckausgleichskammer 5 kann wieder absinken. Der Sensor 7 gibt daher nach einiger Zeit ein Signal an die Schaltungsanordnung 13, das das Absinken des Flüssigkeitsstandes in der Druckausgleichskammer 5 anzeigt, so daß der Betrieb der Absaugpumpe 11 wieder unterbrochen werden kann.If, during operation of the writing or drawing device shown, there is an increase in pressure in the writing fluid storage space 3, for example due to the fact that the air there expands considerably as a result of an increase in temperature, writing fluid 4 escapes into the pressure compensation chamber 5 until writing fluid in the area of the sensor 7 or comes into contact with this. The sensor 7 then sends a signal to the circuit arrangement 13, which activates the motor 12 of the suction pump 11, so that the suction pump 11 sucks air out of the writing liquid storage space 3 via the connection piece 9 and the hose 10 acting as a semi-permeable membrane. This leads to a rapid reduction of the excess pressure that has arisen, and the level in the pressure compensation chamber 5 can drop again. After some time, the sensor 7 therefore sends a signal to the circuit arrangement 13, which indicates the drop in the liquid level in the pressure compensation chamber 5, so that the operation of the suction pump 11 can be interrupted again.

Es sei erwähnt, daß ein im Schreibflüssigkeitsvorratsraum 3 entstehender Unterdruck in üblicher Weise über die Druckausgleichskammer 5 ausgeglichen wird.It should be mentioned that a negative pressure which arises in the writing liquid storage space 3 is compensated in the usual way via the pressure compensation chamber 5.

Claims (4)

Schreib- oder Zeichengerät mit einem Gehäuse (1), an dessen vorderem Ende eine Schreibspitze (2) vorgesehen ist, deren hinterer Bereich mit einem im Gehäuseinnenraum vorgesehenen Schreibflüssigkeitsvorratsraum (3) in Verbindung steht, der über ein kapillares Druckausgleichssystem (5) mit der Umgebungsluft verbunden ist, dadurch gekennzeichnet, daß im Druckausgleichssystem (5) ein auf Schreibflüssigkeit (4) reagierender Sensor (7) vorgesehen ist, daß der Schreibflüssigkeitsvorratsraum (3) über eine semi-permeable Membran (10), die für Luft durchlässig und für Schreibflüssigkeit (4) undurchlässig ist, mit einer Absaugpumpe (11, 12) in Verbindung steht, und daß der Sensor (7) bei Beeinflussung durch Schreibflüssigkeit (4) die Absaugpumpe (11, 12) aktiviert.Writing or drawing device with a housing (1), at the front end of which a writing tip (2) is provided, the rear area of which is connected to a writing fluid storage space (3) provided in the housing interior, which communicates with the ambient air via a capillary pressure compensation system (5) is connected, characterized in that in the pressure compensation system (5) a sensor (7) reacting to writing fluid (4) is provided, that the writing fluid storage space (3) has a semi-permeable membrane (10) which is permeable to air and writing fluid ( 4) is impermeable, is connected to a suction pump (11, 12), and that the sensor (7) activates the suction pump (11, 12) when influenced by writing fluid (4). Schreib- oder Zeichengerät nach Anspruch 1, dadurch gekennzeichnet, daß die semi-permeable Membran die Form eines Schlauches (10) hat, der sich in den Schreibflüssigkeitsvorratsraum (3) erstreckt und dessen freies Ende geschlossen ist, während dessen anderes Ende in Verbindung mit der Absaugpumpe (11, 12) steht.Writing or drawing device according to claim 1, characterized in that the semi-permeable membrane has the form of a tube (10) which extends into the writing liquid storage space (3) and whose free end is closed, while the other end in connection with the Suction pump (11, 12) is. Schreib- oder Zeichengerät nach Anspruch 2, dadurch gekennzeichnet, daß das andere Ende des Schlauches (10) auf einem rohrförmigen Stutzen (9) sitzt, der sich durch eine den Schreibflüssigkeitsvorratsraum (3) begrenzende Wand (6) erstreckt.Writing or drawing device according to claim 2, characterized in that the other end of the hose (10) is seated on a tubular connecting piece (9) which extends through a wall (6) delimiting the writing liquid storage space (3). Schreib- oder Zeichengerät nach Anspruch 2, dadurch gekennzeichnet, daß der Schlauch (10) spiralförmig im Schreibflüssigkeitsvorratsraum (3) verlegt ist.Writing or drawing device according to claim 2, characterized in that the hose (10) is laid spirally in the writing liquid storage space (3).
EP92116716A 1991-10-29 1992-09-30 Writing or drawing implement Expired - Lifetime EP0539747B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT92116716T ATE104217T1 (en) 1991-10-29 1992-09-30 WRITING OR DRAWING DEVICE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4135605 1991-10-29
DE4135605A DE4135605A1 (en) 1991-10-29 1991-10-29 WRITING OR DRAWING DEVICE

Publications (2)

Publication Number Publication Date
EP0539747A1 true EP0539747A1 (en) 1993-05-05
EP0539747B1 EP0539747B1 (en) 1994-04-13

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EP92116716A Expired - Lifetime EP0539747B1 (en) 1991-10-29 1992-09-30 Writing or drawing implement

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US (1) US5211495A (en)
EP (1) EP0539747B1 (en)
JP (1) JPH0796357B2 (en)
AT (1) ATE104217T1 (en)
DE (2) DE4135605A1 (en)

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DE29819071U1 (en) * 1998-10-20 2000-03-02 Anderka, Gerold, 25474 Ellerbek Handwriting or application device
DE10054599C1 (en) * 2000-11-03 2002-04-18 Hahn Schickard Ges Dosing device has valve between primary container and branching point, sensor for level in buffer container, device for opening valve in response to a defined level in buffer container
US6457892B1 (en) 2001-04-20 2002-10-01 Avery Dennison Corporation Writing instrument having a capillary hole through the container
US6637965B1 (en) 2001-06-22 2003-10-28 Avery Dennison Corporation Writing instrument having a reservoir between a tip and a capillary storage
DE202018000858U1 (en) 2018-02-19 2019-05-22 Stabilo International Gmbh Device for manual application of a liquid
US10562338B2 (en) * 2018-06-25 2020-02-18 American Crafts, L.C. Heat pen for use with electronic cutting and/or drawing systems

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EP0015784A1 (en) * 1979-03-13 1980-09-17 Pilot Man-Nen-Hitsu Kabushiki Kaisha Fountain pen
DE3309111A1 (en) * 1982-03-16 1983-09-22 The Parker Pen Co., 53547 Janesville, Wis. WRITING INSTRUMENT AND METHOD FOR THE PRODUCTION THEREOF
EP0129099A2 (en) * 1983-06-13 1984-12-27 Herrnring, Günther, Dr. Ink supply system for writing devices working with liquid ink

Also Published As

Publication number Publication date
DE4135605A1 (en) 1993-05-06
JPH0796357B2 (en) 1995-10-18
EP0539747B1 (en) 1994-04-13
ATE104217T1 (en) 1994-04-15
US5211495A (en) 1993-05-18
DE59200118D1 (en) 1994-05-19
JPH05318979A (en) 1993-12-03

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