WO1998021052A2 - Ustensile servant a distribuer un liquide - Google Patents

Ustensile servant a distribuer un liquide Download PDF

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Publication number
WO1998021052A2
WO1998021052A2 PCT/US1997/021202 US9721202W WO9821052A2 WO 1998021052 A2 WO1998021052 A2 WO 1998021052A2 US 9721202 W US9721202 W US 9721202W WO 9821052 A2 WO9821052 A2 WO 9821052A2
Authority
WO
WIPO (PCT)
Prior art keywords
storage
fluid
capillary
conveying line
container
Prior art date
Application number
PCT/US1997/021202
Other languages
English (en)
Other versions
WO1998021052A3 (fr
Inventor
Ranier Kaufmann
Dale E. Harder
Original Assignee
Avery Dennison Corporation
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 Avery Dennison Corporation filed Critical Avery Dennison Corporation
Priority to AU54484/98A priority Critical patent/AU5448498A/en
Publication of WO1998021052A2 publication Critical patent/WO1998021052A2/fr
Publication of WO1998021052A3 publication Critical patent/WO1998021052A3/fr

Links

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
    • B43K8/02—Pens with writing-points other than nibs or balls with writing-points comprising fibres, felt, or similar porous or capillary material
    • B43K8/04—Arrangements for feeding ink to writing-points
    • 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
    • B43K8/02—Pens with writing-points other than nibs or balls with writing-points comprising fibres, felt, or similar porous or capillary material
    • B43K8/04—Arrangements for feeding ink to writing-points
    • B43K8/06—Wick feed from within reservoir to writing-points

Definitions

  • the present invention relates generally to fluid dispensing utensils and, more particularly, to a fluid dispensing utensil which is adapted to prevent leakage.
  • Fluid dispensing utensils are commonly used to deliver fluids such as ink, paint, adhesives, shoe polish, lotion, medicine, perfume, makeup, white out and food.
  • a relatively large volume of fluid is stored in a non-capillary container (or reservoir) where it is allowed to move freely.
  • Pens which incorporate such a container for example, are referred to as "free ink" pens.
  • Fluid in these utensils is transferred from the container to the delivery end (often referred to as a tip or a nib) via a capillary conveying line.
  • a vacuum is maintained within the container which prevents fluid in the conveying line from escaping from the utensil until the tip is brought into contact with the surface onto which fluid is to be dispensed. At this point, the force of attraction of the surface and the capillary force of the space between the surface and portions of the tip which are not in direct contact with the surface will cause the fluid to flow from the tip to the surface.
  • air enters the container in a controlled manner via a precisely sized air inlet that is formed in the container and ends within the fluid. The air replaces the fluid so as to maintain the vacuum at a relatively constant level.
  • ink pens include an overflow chamber having a capillary storage that will absorb ink.
  • Fountain pens for example, include a capillary storage in the front section and sometimes under the nib.
  • This storage has a capillarity that is strong enough to prevent leakage when the pen is held in the writing position, but not so strong that it will be filled during a normal writing operation.
  • the capillary storage will not receive fluid when there is substantial air expansion within the container.
  • these capillary storage systems have been unable to prevent leakage from free ink pens which hold a relatively large volume of ink and, ultimately, a relatively large volume of air. They have also been unable to prevent the leakage caused by relatively large amounts of air expansion in smaller containers.
  • the storage capacity of existing fountain pen systems which are able to prevent leakage during temperature fluctuations associated with normal use is less than 2.0 milliliters.
  • the reasons for this limitation are as follows.
  • the conveying tube, which transfers fluid via capillary action, must be large enough to produce the desired ink flow during writing.
  • the capillary storage consists of capillaries that must be larger than those of the conveying line. Otherwise, the storage would normally be filled with ink and unable to store excess ink as needed.
  • the storage must also create enough capillary force to hold the ink when the fountain pen is being held vertically. Such force (which is often referred to as "capillary height”) is inversely related to the size of the capillaries.
  • Other pens include capillary storages configured such that the vast majority of the pores are smaller than the air inlet and are made of a material that is the same or substantially similar to that which forms the conveying line. As a result, the capillary storage will normally be completely filled with fluid and unable to receive additional fluid when air expands within the container.
  • One proposed method of reducing this problem is to reduce the size of the air inlet. The proposed method has proven to be unsuccessful, however, due manufacturing limitations which make it prohibitively difficult to produce sufficiently small air inlets.
  • Another proposed method of reducing this problem is to increase the size of the storage capillaries. This method has also proven unsatisfactory because the increase in pore size decreases the capillary height of the capillaries and reduces the amount of fluid that can be stored therein when the pen is in the upright position.
  • Still other pens include capillary storages that consist of a series of radially extending fins which form capillaries therebetween.
  • capillary storages that consist of a series of radially extending fins which form capillaries therebetween.
  • disadvantages associates with the fin-type capillary storages. For example, air interferes with the flow of ink back to the reservoir.
  • fin-type capillary storages take up a relatively large portion of the overall volume of the pen, thereby substantially reducing the amount of volume available for the ink reservoir.
  • the general object of the present invention is to provide a fluid dispensing utensil which obviates, for practical purposes, the aforementioned problems in the art.
  • one object of the present invention is to provide a fluid dispensing utensil which is capable of storing a relatively large volume of fluid without leaking during periods of container air expansion.
  • Another object of the present invention is to provide a fluid dispensing utensil which is relatively inexpensive and easy to manufacture.
  • the present fluid dispensing utensil includes a container, a capillary conveying line and a capillary storage in direct contact with the conveying line.
  • the average capillarity of the storage is less than that of the conveying line, at least in the area of the opening between the container and the rest of the utensil .
  • the lowest capillarity of the storage is substantially less than that of the conveying line. Due to these features, the vast majority of the capillary storage is normally free of fluid and will only store fluid during periods of air expansion. As air in the container contracts back to its original volume, fluid will be drawn out of the storage by the conveying line and returned to the container.
  • the capillary conveying line may be configured such that some of capillaries in the conveying line are relatively small and transfer fluid, while others are relatively large and transfer air. This allows air and liquid to flow in parallel through the conveying line in opposite directions.
  • the container may be configured such that air is only able to enter the container via the conveying line.
  • the conveying line may be used to regulate the amount of air flowing into the container.
  • capillarity has been used herein to indicate the height up to which a liquid ascends within a pore of a given diameter. The greater the height, the greater the capillarity. In other words, the term “capillarity” is indicative of the attractive force between a liquid and a pore.
  • the primary advantage of the present fluid dispensing utensil lies in the fact that it will reliably function under greater temperature fluctuations (and resulting air expansions) than utensils which are presently commercially available. This reliability will also extend to greater fluid storage volumes than commercially available utensils (10 ml or more) . This improved reliability will also extend to outside pressure variations, such as those which occur when a utensil is on an airplane. As noted above, fluid saturates the capillary storage in many prior dispensing utensils. This eventually results in undesired leakage.
  • the capillary storage in the present invention is substantially emptied each time the air expansion within the container subsides, thereby preventing the aforementioned leakage caused by full storages.
  • the use of the conveying line as the air inlet eliminates the need to form a very small air inlet in the fluid container.
  • a utensil in accordance with the present invention is less expensive to manufacture than prior utensils.
  • the capillary conveying line extends to the bottom (or rearward) area of the container and is surrounded up to the bottom area by a tube. Fluid is unable to enter the conveying line when the utensil is in the dispensing orientation and the conveying line itself becomes the only source of fluid. Thus, this arrangement provides additional protection against leakage.
  • the conveying line and storage may also be in direct contact with one another. There are a number of advantages associated with this arrangement. For example, as the vacuum in the reservoir increases (due to a temperature decrease) and fluid begins to drain from the capillary storage, the capillaries in the conveying line will absorb essentially 100% of the fluid and return it to the reservoir.
  • the conveying line and the capillary storage may, in accordance with another embodiment of the invention, be integrally formed. As a result, the conveying line and storage may be manufactured in a single processing step to further reduce manufacturing costs.
  • an air passage is provided between the exterior surface of the capillary storage and the interior surface of the container.
  • the air passage may be provided in a variety of ways. For example, at least a portion of the exterior surface of the capillary storage may be surrounded by a porous shroud. Alternatively, a substantially rigid element may be arranged between the exterior surface of the capillary storage and the interior surface of the container. Adequate space may also be provided by making the inner surface of the housing rough or irregular. On the storage side, one or more discontinuities may be formed in the exterior surface of the storage.
  • the air passage is especially useful when the capillary storage is formed from open cell polyurethane foam because certain solvents used in marker inks can cause this type of foam to swell.
  • the passage improves air flow within the pen and provides an additional measure of prevention against leakage.
  • FIGURE 1 is a cross-section view of a fluid dispensing utensil in accordance with a preferred embodiment of the present invention
  • FIGURE 2 is a diagram showing, for at least the area adjacent the opening between the container and the capillary storage chamber, the capillary potential of the pores in the capillary storage and capillary conveying line plotted against the percentage of pores;
  • FIGURE 3 is a cross-section view of the utensil shown in FIGURE 1 illustrating the manner in which air enters the container and fluid exits the container;
  • FIGURE 4 is a cross-section view of a fluid dispensing utensil in accordance with another preferred embodiment of the present invention.
  • FIGURE 5 is a cross-section view of a fluid dispensing utensil in accordance with still another preferred embodiment of the present invention
  • FIGURE 6 is a cross-section view of a fluid dispensing utensil in accordance with still another preferred embodiment of the present invention
  • FIGURE 7 is a cross-section view of a fluid dispensing utensil in accordance with yet another preferred embodiment of the present invention.
  • FIGURE 8 is a perspective view of a capillary storage shroud in accordance with another preferred embodiment of the present invention
  • FIGURE 9 is a perspective view of a capillary storage shroud in accordance with another preferred embodiment of the present invention.
  • FIGURE 10 is a cross-section view of a fluid dispensing utensil including a shroud
  • FIGURE 11 is a cross-section view of a hollow feeder tube which may be used in conjunction with the utensil shown in FIGURE 10;
  • FIGURE 12 is a cross-section view of a fluid dispensing utensil in accordance with still another preferred embodiment of the present invention.
  • FIGURE 13 is a cross-section view of a fluid dispensing utensil in accordance with yet another preferred embodiment of the present invention
  • FIGURE 14 is a cross-section view of a fluid dispensing utensil in accordance with another preferred embodiment of the present invention.
  • a preferred embodiment of the present invention includes a housing 20 consisting of a container 11 for storing fluid 13 and an overflow chamber 25.
  • Container 11 and overflow chamber 25 may be separated by a partition 21.
  • partition 21 is only an exemplary representation of the boundary between the container and overflow chamber.
  • An alternate boundary is discussed below with respect to FIGURE 7.
  • Container 11 may also be embodied in any suitable manner, either as an integral part of housing 20 or as a separate element connected to the housing.
  • a tip 15 extends from one end of housing 20 in a known manner.
  • An inlet 22 allows air to flow freely in to and out of overflow chamber 25.
  • Partition 21 includes an opening 12 which, as shown by way of example in FIGURE 1, is closed by a capillary conveying line 14.
  • the conveying line extends from opening 12 to tip 15 and is in direct contact with a capillary storage 16.
  • the average capillarity of capillary storage 16 is smaller than the average capillarity of conveying line 14.
  • the capillary storage is arranged about the periphery of capillary conveying line 16 in the embodiment shown in FIGURE 1, there is no requirement that it extend all the way around the conveying line.
  • the strict separation of capillary storage 16 and conveying line 14 shown in FIGURE 1 is not absolutely necessary. With respect to assembly when the conveying line 14 and storage 16 are separate elements, assembly may be performed by wrapping a sheet of storage material around the conveying line and then heat sealing the abutting ends of the wrapped sheet to one another.
  • a mixture of porous and/or fibrous materials may be provided which have a distribution of larger and smaller capillaries, such as the distribution shown in FIGURE 2, within the material forming the capillary storage and conveying line.
  • the conveying line is formed from a number of small capillaries that are connected to one another, the same amount of fluid flow may be achieved with a larger single capillary tube. This advantageously allows the size of the storage capillaries to be reduced and the length of the storage increased, thereby increasing storage volume.
  • the conveying line and storage may be formed from any suitable material. However, such material should have a capillary structure and is preferably a porous material.
  • Exemplary conveying line materials include fibrous materials, ceramics and porous plastics such as that manufactured by Porex in Atlanta, Ga .
  • One exemplary fiber material is an acrylic material identified by type number C10010 that is manufactured by Teibow Hanbai Co. Ltd. This company is located at 10-15 Higashi Nihonbashi 3 Ohome , Chou-Ku, Tokyo 103, Japan.
  • the conveying line may also consist of a porous plastic tube which runs from the container to the tip. The end of tube adjacent the tip is closed and regulates air flow into the container.
  • Exemplary storage materials include reticulated foam, which may range from hydrophilic to hydrophobic. The last mentioned type of foam may be used with non-water based liquids. The choice of foam depends, of course, on fluid type.
  • reticulated foam is Bulpren S90 manufactured by Recticel, which is located at Damstraat 2, 9230 Wetteren, Belgium.
  • Bulpren S90 is an open cell polyurethane foam based on polyester which averages 90 pores per inch. This foam is compressed to 1/3 of its original volume at 180 degrees Celsius to form the storage. This volume is maintained after the foam cools.
  • Other storage materials include ceramics and porous plastics.
  • the conveying line is press-fit into container opening 12 and provides the only path by which air can enter the otherwise closed fluid container 11.
  • air flow into the container may be regulated with the conveying line.
  • the finer capillaries of conveying line 14 transfer fluid 13 to the tip.
  • the larger capillaries allow air 23 to enter the fluid container.
  • air will enter through the largest capillary in the conveying line.
  • the size of the larger pores which transport air and the amount that these pores are compressed during the press-fitting process will ultimately dictate the amount of air flow into the container.
  • Container opening 12 and the press-fit portion of conveying line 14 are, therefore, one of the control mechanisms that regulate the flow of air into the container.
  • Other control mechanisms include the capillarity of the conveying line.
  • the majority of storage 16 has a capillarity that is less than that of conveying line 14.
  • the majority of the pores in storage 16 are larger than the majority of the pores in conveying line 14.
  • This portion of the storage is represented by the overlapping area 26 of the curves shown in FIGURE 2.
  • the few relatively small pores in the storage will normally be filled with fluid, while the larger pores will remain in a fluid-free state until there is air expansion within container 11.
  • the diameter of the biggest pores of the conveying line is less than the average diameter of the pores of the storage.
  • capillary storage 16 When air expansion takes place within the container 11, a portion of the fluid in the container will be transferred through opening 12 and conveying line 14 into the normally fluid-free portions of capillary storage 16.
  • capillary storage 16 receives the "excess” fluid and prevents uncontrolled leakage of the fluid from tip 15, or any other portion of the utensil.
  • the "excess" fluid in capillary storage 16 will return to container 11 through conveying line 14 when the pressure in the container subsides. This process is repeated whenever temperature fluctuations, for example, cause air volume fluctuations within the container.
  • the capillary storage will not already be filled to capacity when there is an air expansion.
  • conveying line 14 is continuously wetted with fluid, at least in the area of opening 12, air cannot interrupt the return of the fluid to the container as long as there is fluid in the capillaries of the storage 16 which are larger than the largest pore in the conveying line 14.
  • the illustrated tip is an integral portion of conveying line 14, the present invention is not limited to such a configuration.
  • the tip may also be a separate structural element, such as a stamp tip, foam tip, roller ball, or razor tip.
  • the size of the tip may be varied, even when the conveying line and tip are unitary, as applications require. Where the tip is formed from a porous material, its pores should be smaller than those of the conveying line in order insure that the fluid in the conveying line will toward the tip during dispensing.
  • conveying line 14 may be configured such that it extends into area 19 near container bottom 18.
  • the capillary storage and the capillary conveying line are enclosed by a tube 24.
  • the tube provides additional protection against unwanted leakage.
  • capillary storage 16 and capillary conveying line 14 are separate structural elements and the conveying line extends into bottom area 19.
  • a mixture of porous materials having the requisite combination of capillary sizes form a unitary capillary storage 16 and conveying line 14.
  • conveying line 14 and capillary storage 16 define a unitary structural element similar to that shown in FIGURE 6.
  • rear portion 140 of the integral conveying line and capillary storage is tapered so that it may be received in opening 12.
  • this portion of the combined conveying line/storage may be pinched together at the opening in a defined manner.
  • Rear portion 140 may also be provided as a separate element that is connected to the capillary storage.
  • capillary conveying line 14' may be configured such that it includes a radially extending portion that separates the container from the overflow chamber.
  • the conveying line and radially extending portion fill the opening between the container and the overflow chamber.
  • the pores in the radially extending portion may be substantially similar to those in the conveying line and allow air to pass, but block the flow of fluid.
  • the radially extending portion may be used to regulate the flow of air into the container.
  • a porous shroud such as shrouds 28 and 30, may be placed in an exemplary utensil 32 (such as a pen) in the manner shown in FIGURE 10.
  • Exemplary utensil 32 includes a housing 34 divided into a container 36 and a chamber 38 by a partition 40.
  • a conveying line 42 which may be of the solid type described above or a hollow porous plastic conveying line (or tube) such as that shown in FIGURE 11, extends from the container 36 through the chamber 38 to a tip 44.
  • a hollow plastic feeder tube decreases flow resistance between the container 36 and the tip 44.
  • a capillary storage 46 within the chamber 38 is in direct contact with the conveying line 42.
  • a porous shroud surrounds the capillary storage 46 and prevents the storage from expanding to the point at which it makes continuous contact with the inner wall of the housing 34, thereby forming an air gap 48.
  • the air gap 48 provides a passage that allows air to flow out of the utensil through an inlet 49 when pressure within the container 36 rises and liquid is forced from the container through the larger capillaries in the conveying line 42.
  • the inner wall of the housing 34 in the area of the chamber 38 tapers inwardly near the tip
  • the storage 46 and surrounding shroud 28 may be press fit into the overflow chamber. Of course, the press fit is not air-tight.
  • the porous shroud may take a variety of forms and be composed of any material which will both resist swelling of the capillary storage 46 and allow to air flow therethrough.
  • exemplary shroud 28 may be formed from a number of porous materials including, but not limited to nylon mesh, fabrics, and papers. The fabrics may be adhesive bonded to the storage material prior to shaping the capillary storage around the conveying line.
  • Exemplary shroud 30 is formed from plastic and includes perforations 30a.
  • an air passage may be formed between the capillary storage and the interior of the housing by creating irregular surfaces therebetween.
  • the irregular surfaces prevent the capillary storage from making continuous contact with the interior surface of the housing when the storage swells, thereby insuring that there will be a gap to accept air from the storage.
  • the capillary storage 52 is substantially star-shaped and has a series of depressions 54 formed therein.
  • Exemplary utensil 56 which is shown in FIGURE 13, includes a series of longitudinal ribs 58 which extend inwardly from the inner surface of the housing 60.
  • the exemplary utensil 62 shown in FIGURE 14 includes a series of longitudinally extending rods 64 that are inserted between the housing 66 and the capillary storage 68. Rods 64 may be replaced by capillary tubes. Adequate space may be provided by simply making the inner surface of the housing rough or irregular.
  • foams that are resistant to the swelling caused by certain solvents such as polyethylene foam, may be employed if they possess the other necessary properties.
  • the capillary storage may also be formed from alternate materials (that have the requisite capillarity) such as standard marker filler materials and porous plastics.
  • the present invention is capable of storing and dispensing a variety of fluids.
  • ink is used.
  • Other fluids include deodorant, perfume, medicines such as acne medicine, balms, lotions, makeup, lipstick, paint, adhesives (whether microencapsulated or not) , white out, shoe polish and food stuffs.
  • the pore size and pore volume of the conveying line and storage must be varied in accordance with the viscosity and particle size of the fluid.
  • the diameters of the capillaries (or pores) in the conveying line may range from 0.01mm to 0.05mm and the capillary (or pore) diameters in the storage may range from 0.02mm to 0.5mm, with a distribution similar to that shown in FIGURE 2. Pore sizes and volumes are increased for larger particle sizes and higher viscosities and, conversely, are reduced for smaller particle sizes and lower viscosities.
  • the utensil may be of the "break seal to initiate" variety.
  • Such utensils include a stopper that prevents fluid from entering the conveying line until the consumer is ready to use the utensil for the first time. This keeps the both the fluid and the conveying line fresh.
  • a secondary reservoir located near the tip. Such a reservoir could have a capillarity similar to that of the conveying line and would increase the amount of fluid available during dispensing.

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  • Automatic Analysis And Handling Materials Therefor (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Abstract

Ustensile servant à distribuer un liquide, tel qu'un ustensile d'écriture, et comprenant un réservoir (20) définissant une première zone de stockage (11) servant à contenir un liquide, une deuxième zone de stockage (25), une ouverture entre lesdites zones, une pointe (15), une ligne (14) de transport par capillarité s'étendant depuis l'ouverture à travers au moins une partie de la deuxième zone de stockage vers la pointe, ainsi qu'une zone de stockage capillaire (16) associée à la deuxième zone de stockage et en contact direct avec la ligne de transport. Cet ustensile peut également comporter une enveloppe poreuse (28).
PCT/US1997/021202 1996-11-12 1997-11-12 Ustensile servant a distribuer un liquide WO1998021052A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU54484/98A AU5448498A (en) 1996-11-12 1997-11-12 Fluid dispensing utensil

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US74722796A 1996-11-12 1996-11-12
US08/747,227 1996-11-12

Publications (2)

Publication Number Publication Date
WO1998021052A2 true WO1998021052A2 (fr) 1998-05-22
WO1998021052A3 WO1998021052A3 (fr) 1998-07-23

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PCT/US1997/021202 WO1998021052A2 (fr) 1996-11-12 1997-11-12 Ustensile servant a distribuer un liquide

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WO (1) WO1998021052A2 (fr)

Cited By (14)

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EP0899128A1 (fr) * 1997-08-29 1999-03-03 The Pilot Ink Co., Ltd. Instrument d'écriture à alimentation en liquide directe
EP0976577A1 (fr) * 1998-07-28 2000-02-02 Masaaki Fukami Stylo
EP1029708A1 (fr) * 1999-02-17 2000-08-23 The Pilot Ink Co., Ltd. Dispositif d'écriture à alimentation directe en fluide
EP1050417A1 (fr) * 1999-05-07 2000-11-08 Universal S.p.A. Stylo feutre ou instrument d'écriture similaire et procédé de fabrication
EP1066982A1 (fr) * 1999-07-05 2001-01-10 Schwan-STABILO Schwanhäusser GmbH & Co. Dispositif pour appliquer de l'encre sur une surface
WO2001026914A1 (fr) * 1999-10-08 2001-04-19 Dataprint R. Kaufmann Gmbh Dispositif d'application de liquide d'ecriture, de graphisme, d'impression, de dessin ou similaire sur un support
US6322269B1 (en) 1999-06-28 2001-11-27 Sanford I L.P. Free ink system
WO2002004231A1 (fr) * 2000-07-11 2002-01-17 Pulfer, Bernard Stylo a plume
WO2003018327A1 (fr) * 2001-08-23 2003-03-06 Hics Corporation Instrument graphique
US6632041B1 (en) 1999-06-28 2003-10-14 Sanford L.P. Free ink system
WO2003101759A1 (fr) * 2002-05-31 2003-12-11 Hics Corporation Instrument d'ecriture
US6695517B2 (en) 2001-03-26 2004-02-24 Sanford, L.P. Free ink system
EP1612056A2 (fr) 2004-06-15 2006-01-04 Monami Co. Ltd. Instrument d' écriture
EP1946940A1 (fr) * 1999-10-05 2008-07-23 The Pilot Ink CO., Ltd. Objet d'écriture pour utilisation dans un jouet comprenant un tissu ayant des propriétés métachromatiques au contact de l'eau

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DE2109467A1 (de) * 1971-02-27 1972-09-14 Rigoni, Walter, 7742 St. Georgen Tamponvorrichtung
US3767520A (en) * 1971-11-24 1973-10-23 F Dick Extruded fibrous liquid reservoir and method of making same
DE2355188A1 (de) * 1972-11-06 1974-05-16 Tokyo Hat Faserschreiberspitze
EP0516538A1 (fr) * 1991-05-27 1992-12-02 Conte S.A. Article d'écriture à encre liquide comportant un reservoir tampon microporeux

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
DE2109467A1 (de) * 1971-02-27 1972-09-14 Rigoni, Walter, 7742 St. Georgen Tamponvorrichtung
US3767520A (en) * 1971-11-24 1973-10-23 F Dick Extruded fibrous liquid reservoir and method of making same
DE2355188A1 (de) * 1972-11-06 1974-05-16 Tokyo Hat Faserschreiberspitze
EP0516538A1 (fr) * 1991-05-27 1992-12-02 Conte S.A. Article d'écriture à encre liquide comportant un reservoir tampon microporeux

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5967687A (en) * 1997-08-29 1999-10-19 The Pilot Ink Co., Ltd. Direct liquid supply writing implement
EP0899128A1 (fr) * 1997-08-29 1999-03-03 The Pilot Ink Co., Ltd. Instrument d'écriture à alimentation en liquide directe
EP0976577A1 (fr) * 1998-07-28 2000-02-02 Masaaki Fukami Stylo
EP1029708A1 (fr) * 1999-02-17 2000-08-23 The Pilot Ink Co., Ltd. Dispositif d'écriture à alimentation directe en fluide
US6336762B1 (en) 1999-02-17 2002-01-08 The Pilot Ink Co., Ltd. Direct-fluid-supply writing device
EP1050417A1 (fr) * 1999-05-07 2000-11-08 Universal S.p.A. Stylo feutre ou instrument d'écriture similaire et procédé de fabrication
US6227741B1 (en) 1999-05-07 2001-05-08 Universal S.P.A. Felt pen or like writing instrument and manufacturing process therefor
US6632041B1 (en) 1999-06-28 2003-10-14 Sanford L.P. Free ink system
US6322269B1 (en) 1999-06-28 2001-11-27 Sanford I L.P. Free ink system
EP1066982A1 (fr) * 1999-07-05 2001-01-10 Schwan-STABILO Schwanhäusser GmbH & Co. Dispositif pour appliquer de l'encre sur une surface
EP1946940A1 (fr) * 1999-10-05 2008-07-23 The Pilot Ink CO., Ltd. Objet d'écriture pour utilisation dans un jouet comprenant un tissu ayant des propriétés métachromatiques au contact de l'eau
WO2001026914A1 (fr) * 1999-10-08 2001-04-19 Dataprint R. Kaufmann Gmbh Dispositif d'application de liquide d'ecriture, de graphisme, d'impression, de dessin ou similaire sur un support
WO2002004231A1 (fr) * 2000-07-11 2002-01-17 Pulfer, Bernard Stylo a plume
FR2811611A1 (fr) * 2000-07-11 2002-01-18 Bernard Pulfer Stylo a plume
US6695517B2 (en) 2001-03-26 2004-02-24 Sanford, L.P. Free ink system
US7101104B2 (en) 2001-03-26 2006-09-05 Sanford, L.P. Free ink system
WO2003018327A1 (fr) * 2001-08-23 2003-03-06 Hics Corporation Instrument graphique
WO2003101759A1 (fr) * 2002-05-31 2003-12-11 Hics Corporation Instrument d'ecriture
EP1612056A2 (fr) 2004-06-15 2006-01-04 Monami Co. Ltd. Instrument d' écriture
EP1612056A3 (fr) * 2004-06-15 2007-01-03 Monami Co. Ltd. Instrument d' écriture
CN100395122C (zh) * 2004-06-15 2008-06-18 株式会社募那美 书写工具

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AU5448498A (en) 1998-06-03
WO1998021052A3 (fr) 1998-07-23

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