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US3659951A - Cartridge for a writing implement - Google Patents

Cartridge for a writing implement Download PDF

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Publication number
US3659951A
US3659951A US18544A US3659951DA US3659951A US 3659951 A US3659951 A US 3659951A US 18544 A US18544 A US 18544A US 3659951D A US3659951D A US 3659951DA US 3659951 A US3659951 A US 3659951A
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US
United States
Prior art keywords
cartridge
writing medium
mixtures
writing
pressure
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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 - Lifetime
Application number
US18544A
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English (en)
Inventor
Werner Germann
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.)
Albe SA
Amerasia Enterprises Inc
Original Assignee
Amerasia Enterprises Inc
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 Amerasia Enterprises Inc filed Critical Amerasia Enterprises Inc
Application granted granted Critical
Publication of US3659951A publication Critical patent/US3659951A/en
Assigned to ALBE, S.A. reassignment ALBE, S.A. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: ANANDA ANLAGEANSTALT
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B43K7/035—Ink reservoirs; Ink cartridges pressurised, e.g. by gas the gas acting on a piston

Definitions

  • CI ..40l/ 190, 106/20 maintain the writing medium in said cartridge under pressure, [51] B43k 7/10, (109d 1 1/18 said writing medium comprising a mixture of a highly volatile 5s Fleld 01 Search ..401/187, 188, 190, 142; solve! and 810W volatility Solvent, lhickenins mm and P 106/20, 22 ments.
  • the invention is directed to the method of producing the cartridge and the writing medium contained therein,
  • FIG 10 Claims, 6 Drawing Figures Patented May 2, 1972 [-76.4
  • FIG 5 FIG 6 mvsmon WERNER GERMANN ATTORNEYS CARTRIDGE FOR A WRITING IMPLEMENT
  • the instant invention is directed to a cartridge for a writing implement.
  • the instant invention is directed to a cartridge for a writing implement in which the writing medium is maintained under positive pressure.
  • writing implements and in particular ball point pens
  • pens contain therein a cartridge in which the writing medium was maintained under pressure. That is to say that cartridges have been manufactured for use in ball point pens, which cartridges contain therein a writing medium which is fed to the ball of said cartridge by means of gas pressure.
  • the writing medium contained in such cartridges has in the past been of such a viscosity that the writing medium in a rest position did not exude through the opening next to the ball.
  • ball point pen cartridges have also been prepared wherein the pressure therein is created either through chemical reaction of one or several active substances, and/or through the insertion into the cartridge of an expandable gas.
  • Such known cartridges, and in particular those cartridges which contain highly viscous writing mediums have the disadvantage that they require a relatively large clearance between the cartridge casing and the ball contained therein so as to eliminate the difficulties with regard to an excessive braking effect on the suspended ball and further so as to allow for the dispensing of the writing medium in a quantity sufficient to produce the desired color intensity.
  • the large clearance between the ball and the cartridge has a disadvantage, however, inasmuch as the relatively thick writing medium, when it is deposited on to the support such as the writing paper, is of such a viscosity that it cannot be absorbed quickly enough by said support. As a result thereof, the deposited ink will not dry rapidly enough so as to eliminate the smearing thereof and further remains in a wet state for an excessively long period of time.
  • gaseous mediums such as butane, isobutane or freon gas may be employed so as to create the positive pressure necessary to expel the writing medium.
  • gaseous mediums such as butane, isobutane or freon gas
  • the difficulties noted above with regard to the sealing of the cartridge under pressure are also present. That is to say that the apparatus and equipment necessary to produce such cartridges are extremely expensive and complicated. The expense in this connection is further complicated by the fact that the apparatus and the cartridge must be refrigerated during the dispensing of the gas and further during the sealing of the cartridge thereafter.
  • Another object of the instant invention is to provide a cartridge for a writing implement in which the writing medium is maintained under a specified pressure throughout the use of said writing medium.
  • Yet another object of the instant invention is to provide a writing medium which is particularly suited for use in connection with a pressurized cartridge.
  • Yet another object of the instant invention is to provide a method of producing a cartridge for a writing implement in which the writing medium is maintained under a specified pressure throughout the use of said writing medium.
  • the instant invention is directed to a cartridge for use in connection with a writing implement, in which cartridge the writing medium is maintained under pressure.
  • the pressure within said writing cartridge is produced as a result of the reaction of at least two reactants which are located and mixed together in that portion of the cartridge which is not occupied by the writing medium. That is to say that the pressure is created by the reaction of two or more reactants in that space between the writing medium and the closing plug at the rear extremity of the cartridge column.
  • At least two reactants are mixed with each other in the rear portion of the cartridge which is designed for use in a writing implement.
  • the individual reactants are introduced separately into the cartridge tube and are brought into contact with each other only after the closure and sealing of the cartridge tube.
  • At least two reactants are employed in the gas producing reaction within the writing implement cartridge. These two reactants are of such a nature that when contacted with each other they result in the production of a gas which raises the pressure within the sealed cartridge.
  • at least one of said reactants is maintained within and as a mixture with the highly viscous neutral non-reactive substance. That is to say that one of the reactants is mixed with a viscous substance and incorporated therein so as to control the production of gas and eliminate difficulties with regard to the premature contacting of the individual reactants.
  • the instant invention is not limited to those gas generating reactants which operate as a result of an acid base reaction but is also operative in connection with those reactants which produce a gas as a result of an oxidation or redox reaction or any other type of gas generating reactant pair.
  • non-reactive highly viscous neutral substance one may employ materials such as grease, wax, silica, silica gel, polyvinylpyrrolidone, polyethylenes, and the like.
  • the primary criterion for use in connection with such highly viscous materials is that they be non-reactive in the presence of the gas generating pair and further that they be of such a consistency that the contact of the individual reactants of said gas producing pair is controlled.
  • the second reacting component one might employ acetic acid and water as the active ingredients and grease, wax, silica gel or polyvinylpyrrolidone as a neutral or nonreactive second substance.
  • acetic acid and water as the active ingredients and grease, wax, silica gel or polyvinylpyrrolidone
  • non-reactive neutral substance it is to be noted that only one non-reactive neutral substance is necessary.
  • each of the active reactants of the gas producing pair is incorporated within a non-reactive substance.
  • the gas producing pair when formulated in combination with the non-reactive substance, is incorporated into the rear portion of the implement cartridge.
  • there is a space within said cartridge which is not occupied by the writing medium, which space constitutes a volume at least one fifth of that occupied by said writing medium.
  • the amount of reactants employed in the cartridge and the concentration of same is controlled primarily by the desired pressure on wishes to obtain in the sealed cartridge.
  • the pressure within said cartridge should be from about 0.7 atmospheres (gauge) to about 7 atmospheres (gauge).
  • the concentration of the reactants should be such that subsequent to the exhausting of the writing medium from said cartridge as a result of the use thereof, there should be more than 0.1 atmospheres (gauge) and a maximum of 3 atmospheres (gauge) of pressure.
  • Yet another aspect of the instant invention is the writing medium which is employed in connection with such a pressurized cartridge.
  • numerous writing mediums have been previously prepared. However, they have been found to be difficult to use because of their highly viscous nature which retards the drying thereof on the support surface.
  • the viscosity of such previously employed writing mediums has of course been dictated by the fact that highly fluid mediums quickly exuded through the large opening as a result of the pressure applied thereto.
  • a writing medium is prepared which is a mixture of at least one highly volatile solvent and one solvent which has a low volatility in addition to coloring pigments and a thickening agent.
  • novel writing medium of the instant invention is of such a viscosity that it has a strongly adhesive and strongly cohesive film forming character.
  • the writing medium employed containing the above ingredients should have a viscosity of at least 20,000 cps initially and subsequent to the evaporation of the highly volatile solvent it should have a viscosity of approximately 70,000 cps.
  • the writing medium of the instant invention contains at least one highly volatile solvent material.
  • said highly volatile solvent material is ethylether.
  • ethylether any one of several other highly volatile substances, which substances may have at most an evaporation time of 20 times that of ethylether.
  • highly volatile solvents would include, for example, acetone, dichloromethane, methylacetate, chloroform, ethylacetate, trichloroethylene, methyl alcohol, xylene, decalin, isopropyl alcohol, and the like.
  • a low volatility solvent or one which slowly evaporates one may employ those which are conventionally used in writing mediums for ball point pens.
  • solvents such slowly evaporating solvents as benzyl alcohol, phenyl glycol, 1,2-propylene glycol, methyl diglycol, ethyl diglycol, butyl diglycol, tetraethylene glycol, and the like.
  • any solvent which evaporates at least one thousand times more slowly than ethylether may be employed.
  • an additional component of the subject writing medium is a thickening agent.
  • a thickening agent is a polyvinylpyrrolidone polymer.
  • a linseed oil which is thickened until it acquires a viscoelastic characteristic, or polyethylene glycol in the form of a wax.
  • dispersions of silica which have a particle size of less than 0.l microns, graphite dispersions in suspension, carbon black of extremely high purity, or any combination of the above noted thickening agents.
  • FIG. 1 shows a longitudinal section through a hermetically completely closed cartridge of a ball point pen
  • FIG. 2 shows a longitudinal section through the rear portion of a second design given by way of example
  • FIG. 3 shows a schematic presentation of a device for in jection of the chemical reagents
  • FIGS. 4 to 6 show schematic presentations of the process for injection of the chemical reagents and closing of the cartridge tube in accordance with the second design given by way of example.
  • FIG. 1 of the drawings shows a longitudinal section of a hermetically closed complete cartridge of the instant invention.
  • cartridge tube 2 containing the writing medium 1 has been closed in a gas type manner at its rear end by means of a closing plug 3.
  • the gas producing pair of reactants 4 and 5 are accommodated in space 6 of the cartridge.
  • a piston 7 closes the rear surface of the writing medium contained in the cartridge.
  • Said piston 7 may be either a solid body or a viscous plastic mass and whenever said piston 7 is a solid body then it is of such a dimension that it is somewhat smaller in cross section than the cartridge tube 2 so that it may follow the writing medium 1 during the writing procedure as a result of the gas pressure generated in space 6.
  • the thin portion 8 of the cartridge tube 2 is closed with a socket 9, which socket has a feed channel for the writing medium 1 to the writing ball 10.
  • Said writing ball 10 is held within the socket 9 by way of a flange 11. Between said flange 11 and the ball 10 there is a clearance which represents the exit orifice 12 through which the writing medium passes.
  • the specific writing mediums which may be employed therein may be any of those taken from the examples which follow.
  • FIG. 2 of the drawings represents a longitudinal section through the upper portion of the cartridge according to the instant invention and in accordance with a second embodiment given by way of example.
  • a reactant 4 is contained in a spherical solid ball which is soluble to a specified degree in a second reactant 5 so as to result in the slow release of the reactant 4 and the dissolution of the spherical ball.
  • the second reactant 5 may be of a plastic consistency or of a liquid nature.
  • the piston 7 which contains the ball and reactant 4 is formed in the shape of a small cap, the bottom of which is in contact with the rear surface of the writing medium column 1.
  • the piston 7 is of such a size and cross section that it is somewhat smaller than the cross section of the cartridge tube 2 so as to enable piston 7 to immediately follow the writing medium upon generation of gas.
  • the two individual reactants 4 and 5 according to this design may be placed in the hollow space of piston 7 and as a result of the spherical shape and nature of reactant 4, the mixing of said reactants takes place only after the sealing of the cartridge tube as demonstrated schematically in FIGS. 4 through 6.
  • FIG. 3 of the drawings schematically represents a device according to the instant invention which is designed for the production of the novel cartridges of the instant invention. If one were to manufacture the embodiment presented in FIG. 1, one would employ two containers, 13 and 14, which are designed so as to maintain the individual reactants 4 and 5 free from contact with each other. Each of said containers l3 and 14 has on the bottom a feed tube designated 15 and 16 respectively which lead to non return valves 17 and 18 respectively. Subsequent to each non return valve there is a feed line 19 and 20, which feed lines connect with two individual dosing pistons 21 and 22. Said dosing pistons 21 and 22 have an opening in the bottom thereof, which opening connects with two additional non return valves 23 and 24, which in turn are connected with a bipartite hollow needle 25.
  • This hollow needle 25 has on its bottom two openings 26a and 26b which are axially disposed in relation to one other, so that whenever said dosing pistons 21 and 22 are pressed forward by means of common operating bar 27, the two reactants 4 and 5 leave the bipartite hollow needle and are pressed individually into space 6 of the cartridge tube 2.
  • the non return valves 17 and 18 serve to prevent the reactants 4 and 5 from flowing backwards into the containers 13 and 14 while said dosing pistons 21 and 22 are pressed forward.
  • the non return valves 23 and 24 serve to close the feed lines to the bipartite hollow needle 25 when said dosing pistons 21 and 22 return and thus suck up a determinable quantity of reagents 4 and 5 from containers l3 and 14.
  • FIGS. 4 through 6 schematically show the method of producing the subject cartridges of the instant invention according to the second embodiment demonstrated in FIG. 2 of the drawings.
  • the individual reactants 4 and 5 are inserted in two separate operations.
  • reactant 4 has been molded into a solid body such as, for example, a spherical ball, and is placed into piston 7 in a preceding operation.
  • piston dosing system shown in FIG. 3 a paste-like reactant 5 is inserted into the free space 6 of the cartridge at a specified distance from the spherical reactant 4.
  • the cartridge tube 2 is then closed as shown in FIG. 5 and the cartridge is centrifuged with its point directed outwards so that reactant 5 comes into contact with the spherically shaped reactant 4, whereupon the individual reactants generate a gas.
  • EXAMPLE 1 A writing medium for use in connection with the subject cartridges was formulated as follows Benzyl alcohol 24 parts Phenyl glycol 24 parts 1.2-propylene glycol 5 parts Pure oleic acid 5 parts Blue base 17 parts Victoria blue base 8 parts Phtalopal SEB 17 parts Polyethylene glycol, molecular weight 500 to 600 Polyvinyl pyrrolidone 8 parts 2 parts The mixture was then maintained at between 60 and 70 C.
  • Example 3 The procedure of Example 1 was repeated with the exception that a composition comprising Silicic acid having a particle size of less than 0.1 microns 7 parts Polyethylene glycol, molecular weight 950-1050 3.5 parts Polyvinyl pyrrolidone 1.6 parts was added to the pigment solvent mixture in lieu of the polyethylene glycol and polyvinyl pyrrolidone employed in Example 1.
  • a volatile solvent system comprising:
  • Ethyl acetate Isopropylene acetate 0.5 parts 0.5 parts in lieu of the ethylether of Example 1.
  • the volatile solvent mixture was employed in an amount of 1 part per 100 parts of the ink composition.
  • Each of the above writing mediums is particularly suited for use in a pressurized writing implement cartridge.
  • Each of said compositions is thixotropic and has a viscosity of over 70,000 cps prior to the addition of the volatile solvent and over 20,000 cps subsequent to said addi tion.
  • Said formulations are as noted purely exemplary and may be varied provided one obtains the previously mentioned critical characteristics. That is to say that the viscosity may be varied so as to obtain a writing medium having those characteristics needed for a particular writing point, temperature, pressure, and the like. That is to say that the viscosity of the writing medium may be appropriately adjusted by varying the amounts of volatile solvent and thickening agent employed in said mediums.
  • EXAMPLE 7 According to the preferred embodiment presented in FIG. 2 of the drawings, a reactant was prepared in a spherical shape having the following formulation Bicarbonate 83.35 parts Polyvinyl pyrrolidone (for example, Luviskol K 90) 16.65 parts The two powdery substances were mixed together and pressed into a solid body, i.e., in a pill shape, in a device conventionally employed in the manufacture of pills.
  • Bicarbonate 83.35 parts Polyvinyl pyrrolidone (for example, Luviskol K 90) 16.65 parts
  • the two powdery substances were mixed together and pressed into a solid body, i.e., in a pill shape, in a device conventionally employed in the manufacture of pills.
  • the second reactant of the reactant pair was formulated as follows Water (H O) 52.60 parts Polyvinyl pyrrolidone (for example Luviskol K 90) 10.50 parts Polyethylene glycol, molecular weight 950 to I050 31.65 parts Acetic acid 85% 5.25 parts Upon contact with the first reactant, the bicarbonate was released in a controlled manner and allowed to react with the acetic acid so as to produce the desired gaseous pressure.
  • the instant invention provides one with a novel pressurized implement cartridge which contains therein a writing medium which is comprised of a low volatility solvent and a high volatility solvent in conjunction with other ingredients.
  • the writing medium which is obtained as a result of the instant invention, has the advantages of a relatively low viscosity while contained within the cartridge and of a higher viscosity upon application to a support material. That is to say that the writing medium, as a result of the quick evaporation of the highly volatile solvent, becomes of a considerably higher viscosity, thus resulting in the rapid drying thereof.
  • the subject writing medium retards the possibility of leakage from within the cartridge inasmuch as immediately upon contact with the atmosphere the highly volatile solvent evaporates, thus leaving a highly viscous material around the ball of the pen. Furthermore, the subject writing medium is particularly well suited for use inasmuch as the use of the high volatility solvent results in a ink having a viscosity such that it readily flows from the cartridge under pressure and is readily absorbed by the writing support.
  • a writing implement cartridge which includes:
  • a cartridge tube having two ends, a socket attached to one end of said tube, said socket having a ball rotatably mounted therein, said ball protruding from said socket, said cartridge tube being sealed at the other end;
  • a writing medium in said cartridge tube, in contact with said ball consisting essentially of at least one pigment at least one thickening agent, imparting to said writing medium a high viscosity and high viscoelasticity.
  • a writing medium in said cartridge tube, in contact with said ball, consisting essentially of at least one pigment at least one thickening agent, imparting to said writing medium a high viscosity and high viscoelasticity.
  • At least two solvents at least one of said solvents having a low volatility evaporating at least one thousand times more slowly than ethyl ether selected from the group consisting of benzyl alcohol, phenyl glycol, 1,2-propylene glycol, methyl diglycol, ethyl diglycol, butyl diglycol, tetraethylene glycol, and mixtures thereof; and at least one of said solvents having a volatility at least as high as ethyl ether and up to 20 times the volatility of ethyl ether, selected from the group consisting of ethyl ether, trichloroethylene, methyl alcohol, xylene, decalin, isopropyl alcohol, and mixtures thereof; and
  • a sliding piston in said cartridge tube, defining a chamber at the end remote from said socket, said piston separating said chamber from said writing medium, said chamber containing at least two chemical mixtures in a viscous state, each mixture containing one gas forming reactant and at least one non-reactive neutral substance in such manner that the mixtures in contact with each other react slowly to create a gas which produces a pressure in said chamber, said pressure transmitted to said writing medium by said piston.
  • the reactant pair comprises acetic acid and sodium bicarbonate and the non-reactive material comprises a material selected from the group consisting of grease, silicic acid, polyvinyl pyrrolidone and polyethylene glycol.
  • a writing implement cartridge which includes:
  • uninlA mun a cartridge tube having two ends, a socket attached to one a writing medium in said cartridge tube, in contact with said ball, consisting essentially of least one pigment least one thickening agent, imparting to said writing medium a high viscosity and high viscoelasticity, selected from the group consisting of polyvinyl pyrrolidone, thickened linseed oil, polyethylene glycol in the form of wax, dispersions of silica with a particle size of less than 0.1 micron, graphite dispersions in suspension, carbon black of extremely high purity, and mixtures thereof;
  • At least two solvents at least one of said solvents having a low volatility evaporating at least one thousand times more slowly than ethyl ether selected from the group consisting of benzyl alcohol, phenyl glycol, l.2-propylene glycol, methyl diglycol, ethyl diglycol, butyl diglycol, tetraethylene glycol, and mixtures thereof; and at least one of said solvents having a volatility at least as high as ethyl ether and up to 20 times the volatility of ethyl ether, selected from the group consisting of ethyl ether, trichloroethylene, methyl alcohol, xylene, decalin, isopropyl alcohol, and mixtures thereof; and
  • a sliding piston in said cartridge tube, defining a chamber at the end remote from said socket, said piston separating said chamber from said writing medium, said chamber containing at least two chemical mixtures, at least one of said chemical mixtures being in a solid state and at least one of the said chemical mixtures being in a viscous state, each mixture containing one gas forming reactant and at least one non-reactive neutral substance in such manner that the mixtures in contact with each other react slowly to create a gas which produces a pressure in said chamber, said pressure transmitted to said writing medium by said piston.
  • the reactant pair comprises acetic acid and sodium bicarbonate and the non-reactive material comprises a material selected from the group consisting of grease, silicic acid, polyvinyl pyrrolidone and polyethylene glycol.

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  • Pens And Brushes (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
US18544A 1969-04-23 1970-03-11 Cartridge for a writing implement Expired - Lifetime US3659951A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH638169A CH547713A (de) 1969-04-23 1969-04-23 Verfahren zur herstellung einer kugelschreibermine.

Publications (1)

Publication Number Publication Date
US3659951A true US3659951A (en) 1972-05-02

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US18544A Expired - Lifetime US3659951A (en) 1969-04-23 1970-03-11 Cartridge for a writing implement

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US (1) US3659951A (es)
CH (1) CH547713A (es)
DE (1) DE2015494A1 (es)
ES (1) ES378796A1 (es)
FR (1) FR2046426A5 (es)
GB (1) GB1282208A (es)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4077727A (en) * 1973-01-29 1978-03-07 Gordon S. Lacy Ball pen ink cartridges containing inks which do not form crystalline masses within copper or copper alloys
US4077807A (en) * 1975-02-20 1978-03-07 Gordon S. Lacy Ball pen inks which do not form clogging crystalline masses within copper or copper alloy ink cartridges
WO1980002536A1 (en) * 1979-05-17 1980-11-27 Gillette Co A pressurized cartridge for a writing instrument
US5324129A (en) * 1993-06-14 1994-06-28 Root Todd J Pivot head toothbrush with mirror
US5901425A (en) * 1996-08-27 1999-05-11 Topaz Technologies Inc. Inkjet print head apparatus
US5924810A (en) * 1997-11-05 1999-07-20 Bic Corporation Double seal system for pressurized writing device
US20040067092A1 (en) * 2001-01-10 2004-04-08 Takayuki Maki Ball-point pen refill
US20060013641A1 (en) * 2002-05-31 2006-01-19 Mitsubishi Pencil Kabushiki Kaisha Ink composition for pressurized ball-point pen and pressurized ball-point pen

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4027271C1 (es) * 1990-08-29 1992-02-06 Rotring-Werke Riepe Kg, 2000 Hamburg, De
DE4113079A1 (de) * 1991-04-22 1992-10-29 Michael Pfeffer Verfahren zur herstellung von gasdruckminen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3000354A (en) * 1958-02-04 1961-09-19 Doleo S A Refill of a ball point writing means
US3074800A (en) * 1958-08-08 1963-01-22 Doleo S A Writing or painting substance for ball point pens and similar devices
US3425779A (en) * 1966-09-01 1969-02-04 Paul C Fisher Pressurized marking instrument

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3000354A (en) * 1958-02-04 1961-09-19 Doleo S A Refill of a ball point writing means
US3074800A (en) * 1958-08-08 1963-01-22 Doleo S A Writing or painting substance for ball point pens and similar devices
US3425779A (en) * 1966-09-01 1969-02-04 Paul C Fisher Pressurized marking instrument
US3425779B1 (es) * 1966-09-01 1984-12-25

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4077727A (en) * 1973-01-29 1978-03-07 Gordon S. Lacy Ball pen ink cartridges containing inks which do not form crystalline masses within copper or copper alloys
US4077807A (en) * 1975-02-20 1978-03-07 Gordon S. Lacy Ball pen inks which do not form clogging crystalline masses within copper or copper alloy ink cartridges
WO1980002536A1 (en) * 1979-05-17 1980-11-27 Gillette Co A pressurized cartridge for a writing instrument
US4498797A (en) * 1979-05-17 1985-02-12 The Gillette Company Pressurized cartridge for a writing instrument
US5324129A (en) * 1993-06-14 1994-06-28 Root Todd J Pivot head toothbrush with mirror
US5901425A (en) * 1996-08-27 1999-05-11 Topaz Technologies Inc. Inkjet print head apparatus
US5924810A (en) * 1997-11-05 1999-07-20 Bic Corporation Double seal system for pressurized writing device
US20040067092A1 (en) * 2001-01-10 2004-04-08 Takayuki Maki Ball-point pen refill
US6926458B2 (en) * 2001-01-10 2005-08-09 Mitsubishi Pencil Kabushikikaisha Ball-point pen refill
US20060013641A1 (en) * 2002-05-31 2006-01-19 Mitsubishi Pencil Kabushiki Kaisha Ink composition for pressurized ball-point pen and pressurized ball-point pen
US7303350B2 (en) * 2002-05-31 2007-12-04 Mitsubishi Pencil Co., Ltd. Ink composition for pressurized ball-point pen and pressurized ball-point pen

Also Published As

Publication number Publication date
CH547713A (de) 1974-04-11
ES378796A1 (es) 1973-02-01
DE2015494A1 (es) 1970-11-05
GB1282208A (en) 1972-07-19
FR2046426A5 (es) 1971-03-05

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AS Assignment

Owner name: ALBE, S.A., SWITZERLAND

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ANANDA ANLAGEANSTALT;REEL/FRAME:004132/0567

Effective date: 19830516

Owner name: ALBE, S.A., VIA GINNAS 10, 6982 AGNO/SWITZERLAND,

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ANANDA ANLAGEANSTALT;REEL/FRAME:004132/0567

Effective date: 19830516