EP0031092A1 - Method for manufacturing large numbers of ball-point pen refills - Google Patents
Method for manufacturing large numbers of ball-point pen refills Download PDFInfo
- Publication number
- EP0031092A1 EP0031092A1 EP80107824A EP80107824A EP0031092A1 EP 0031092 A1 EP0031092 A1 EP 0031092A1 EP 80107824 A EP80107824 A EP 80107824A EP 80107824 A EP80107824 A EP 80107824A EP 0031092 A1 EP0031092 A1 EP 0031092A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- paste
- section
- tube
- gas pressure
- column
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- 239000013013 elastic material Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 description 4
- 230000000717 retained effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002775 capsule Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
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
- B43K7/04—Arrangements for filling the reservoirs, e.g. arrangements at the ball-point ends
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43K—IMPLEMENTS FOR WRITING OR DRAWING
- B43K7/00—Ball-point pens
- B43K7/02—Ink reservoirs; Ink cartridges
- B43K7/03—Ink reservoirs; Ink cartridges pressurised, e.g. by gas
Definitions
- the invention relates to a method for producing a ballpoint pen refill, the paste column of which is constantly pressurized by gas pressure.
- a known method consists in bringing two chemical substances which react with one another with gas separation onto the rear end of the paste column, the gas-separating reaction then commencing after the paste tube has been completely closed. This process is cumbersome, expensive and inaccurate.
- Another known method is to insert a sealed, gas-containing capsule into the rear end of the paste tube and to provide a sealing plug provided with a needle. in order to build up the gas pressure. This method is also imprecise and relatively complex, with the fact that the user still has to manipulate the mine.
- the invention has for its object to provide a method for manufacturing a ballpoint pen refill with a gas column constantly pressurized, which ensures the generation and maintenance of a constant gas pressure in a simple manner, and which also guarantees uniform quality in mass production.
- the object is achieved according to the invention in that at the rear end of the paste tube, at a distance from the end of the paste column, a valve closure with a direction of passage is attached to the inside of the paste tube and then the lead is introduced as a whole into a container in which a gas pressure is generated, which corresponds to the desired gas pressure in the mine.
- the process according to the invention has the advantage that no consideration needs to be given to constructive details of the mine when the gas pressure is applied, and that neither chemical means nor mechanical measures need to be used. It is sufficient to place a large quantity of the finished ballpoint pen refills in a pressure container and to apply the pressure desired in the refill, so that a corresponding pressure in the air is created in all the refills in the pressure container adjusts the space between the paste column and the valve body, which is then retained when the ballpoint pen refills are removed from the pressure vessel.
- the valve closure in a ballpoint pen refill manufactured according to the specified method, consists of a valve plug arranged in the paste tube, which has a section facing the outer end of the paste tube with a diameter corresponding to the inside diameter of the paste tube and a section of smaller diameter facing the paste column, wherein a bore extends in the axial direction of the valve plug, which extends from the outer end of the valve plug into the section of smaller diameter, furthermore in the section of smaller diameter a radial bore opening into its outer circumference is provided, which communicates with the axial bore, and finally, a sleeve made of elastic material is arranged on the section of smaller diameter.
- This valve closure is characterized by a simple structure and ensures a secure seal even with high gas pressure in the mine.
- the ballpoint pen refill contains a paste tube 1, which has the spherical writing tip 2 on its front side and is closed at the back with a stopper 3.
- the writing paste 8 is poured into the paste tube in the required amount and a valve plug is then inserted into the paste tube at a distance from the paste column.
- the valve plug contains a section 4 facing the outer end of the paste tube, the outer diameter of which corresponds approximately to the inner diameter of the paste tube, so that the valve plug can be fastened in a sealed manner in the paste tube.
- Section 4 is connected to section 4 in the direction of writing tip 2 and has a smaller diameter than section 4.
- a bore 5 runs in the axial direction of the valve plug and extends from the outer end of section 4 to section 9 and ends therein as a blind bore.
- a bore 10 runs in the radial direction through the section 9, which is connected to the axial bore 5 and together with this forms the inlet channel for the gas into the space 7 above the paste column 8.
- an elastic sealing sleeve is tightly applied, which closes the bore 10 and thus allows gas to enter the space 7, but prevents backflow.
- valve plug including the sealing sleeve, is inserted as a prefabricated element into the paste tube and fastened therein, whereupon the end plug 3, which is hollow, is attached so that the gas can reach the valve plug unhindered.
- the application of the desired gas pressure to the room 7 takes place in that the finished ballpoint pen refill is simultaneously put into a container together with a large number of other refills, in which gas is compressed to a pressure which corresponds to the pressure which is also in the room 7 Mine is desired.
- the pressure in space 7 then adjusts to the pressure prevailing in the pressure vessel, which pressure is also maintained in space 7 when the pressure vessel is depressurized again.
Landscapes
- Pens And Brushes (AREA)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Abstract
Bei einem Verfahren zur Herstellung einer Kugelschreibermine, deren Pastensäule ständig unter Gasdruck stehen soll, wird am rückwärtigen Ende des Pastenrohres (1) ein Ventilverschluß angebracht und dann die Mine in einen Druckbehälter eingebracht. Über das Ventil baut sich dabei der gewünschte Druck in der Mine auf. Das Verfahren bietet den Vorteil, eine große Anzahl von Minen gleichzeitig mit einem gleich großen Druck beaufschlagen zu können.In a method for producing a ballpoint pen refill, the paste column of which is supposed to be constantly under gas pressure, a valve closure is attached to the rear end of the paste tube (1) and the refill is then introduced into a pressure vessel. The desired pressure in the mine builds up via the valve. The process offers the advantage of being able to pressurize a large number of mines at the same time.
Description
Die Erfindung betrifft ein Verfahren zur Herstellung einer Kugelschreibermine, deren Pastensäule ständig durch Gasdruck beaufschlagt ist.The invention relates to a method for producing a ballpoint pen refill, the paste column of which is constantly pressurized by gas pressure.
Bei derartigen Kugelschreiberminen besteht das Problem, den Gasdruck im rückwärtigen Teil des Pastenrohres vor dem endgültigen Verschluß des rückwärtigen Rohrendes zu erzeugen und auch sicherzustellen, daß der Gasdruck bei der Herstellung bei jeder Mine die gleiche Größe besitzt und auch nach seiner Erzeugung erhalten bleibt. Da es sich bei Kugelschreiberminen um Massenartikel handelt, muß das Aufbringen des Gasdruckes auch in wirtschaftlicher Weise durchgeführt werden können.With such ballpoint refills, there is the problem of generating the gas pressure in the rear part of the paste tube before the rear end of the tube is finally closed, and also ensuring that the gas pressure is the same size for each lead during manufacture and is retained even after it has been generated. Since ballpoint refills are mass-produced items, it must also be possible to apply the gas pressure in an economical manner.
Die bekannten Verfahren wurden diesen Ansprüchen ntcht gerecht, und sie konnten bei der Massenfertigung keine gleichmäßige Qualität gewährleisten.The known processes did not meet these requirements, and they could not guarantee uniform quality in mass production.
Ein bekanntes Verfahren besteht darin, zwei miteinander unter Gasabscheidung reagierende Chemische Stoffe auf das rückwärtige Ende der Pastensäule zu bringen, wobei dann nach dem vollständigen Verschließen des Pastenrohres die gasabscheidende Reaktion einsetzte. Dieses Verfahren ist umständlich, teuer und ungenau.A known method consists in bringing two chemical substances which react with one another with gas separation onto the rear end of the paste column, the gas-separating reaction then commencing after the paste tube has been completely closed. This process is cumbersome, expensive and inaccurate.
Ein anderes bekanntes Verfahren besteht darin, in das hintere Ende des Pastenrohres eine abgeschlossene, ein Gas enthaltende Kapsel einzufügen und einen mit einer Nadel versehenen Abschlußstopfen vorzusehen, wobei der Benutzer bei Ingebrauchnahme der Mine durch Druck auf den Stopfen mit der Nadel die Gaskapsel durchstoßen muß, um den Gasdruck aufbauen zu können. Auch dieses Verfahren ist ungenau und verhältnismäßig aufwendig, wobei noch hinzukommt, daß der Benutzer an der Mine noch eine Manipulation vornehmen muß.Another known method is to insert a sealed, gas-containing capsule into the rear end of the paste tube and to provide a sealing plug provided with a needle. in order to build up the gas pressure. This method is also imprecise and relatively complex, with the fact that the user still has to manipulate the mine.
Schließlich ist es bekannt, in das hintere Ende des Pastenrohres einen Stopfen einzuschieben, wobei die zwischen dem Ende der Pastensäule und dem Stopfen befindliche Luft komprimiert wird. Dieses Verfahren ist zwar verhältnismäßig einfach, jedoch ergeben sich Dichtungsprobleme, und die Menge der im Pastenrohr unterzubringenden Paste ist begrenzt, weil ein Teil des Raumes, der zum Komprimieren der Luftsäule benötigt wird, als Speicherraum für die Paste verlorengeht.Finally, it is known to insert a stopper into the rear end of the paste tube, the air located between the end of the paste column and the stopper being compressed. Although this method is relatively simple, there are sealing problems and the amount of paste to be accommodated in the paste tube is limited because part of the space needed to compress the air column is lost as a storage space for the paste.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zur Herstellung einer Kugelschreibermine mit ständig durch Gasdruck beaufschlagter Pastensäule zu schaffen, das auf einfache Weise die Erzeugung und Aufrechterhaltung eines stets gleichen Gasdruckes gewährleistet, und das auch in der Massenfertigung eine gleichmäßige Qualität garantiert.The invention has for its object to provide a method for manufacturing a ballpoint pen refill with a gas column constantly pressurized, which ensures the generation and maintenance of a constant gas pressure in a simple manner, and which also guarantees uniform quality in mass production.
Die gestellte Aufgabe wird gemäß der Erfindung dadurch gelöst, daß am rückwärtigen Ende des Pastenrohres mit Abstand vom Ende der Pastensäule ein Ventilverschluß mit Durchlaßrichtung ins Innere des Pastenrohres angebracht und dann die Mine als Ganzes in einen Behälter eingebracht wird, in dem ein Gasdruck erzeugt wird, der dem gewünschten Gasdruck in der Mine entspricht.The object is achieved according to the invention in that at the rear end of the paste tube, at a distance from the end of the paste column, a valve closure with a direction of passage is attached to the inside of the paste tube and then the lead is introduced as a whole into a container in which a gas pressure is generated, which corresponds to the desired gas pressure in the mine.
Das erfindungsgemäße Verfahren hat den Vorteil, daß bei der Aufbringung des Gasdruckes keinerlei Rücksicht auf konstruktive Einzelheiten der Mine genommen zu werden braucht und daß auch weder chemische Mittel noch mechanische Maßnahmen eingesetzt zu werden brauchen. Es genügt, eine große Menge der fertig fabrizierten Kugelschreiberminen in einen Druckbehälter zu legen und diesen mit dem in der Mine gewünschten Druck zu beaufschlagen, wodurch sich über das Ventil in allen im Druckbehälter befindlichen Minen ein entsprechender Druck im Luftraum zwischen der Pastensäule und dem Ventilkörper einstellt, der beim Herausnehmen der Kugelschreiberminen aus dem Druckbehälter dann auch erhalten bleibt.The process according to the invention has the advantage that no consideration needs to be given to constructive details of the mine when the gas pressure is applied, and that neither chemical means nor mechanical measures need to be used. It is sufficient to place a large quantity of the finished ballpoint pen refills in a pressure container and to apply the pressure desired in the refill, so that a corresponding pressure in the air is created in all the refills in the pressure container adjusts the space between the paste column and the valve body, which is then retained when the ballpoint pen refills are removed from the pressure vessel.
Es ist zwar bei Kugelschreiberminen, bei denen die Pastensäule nicht ständig unter Gasdruck steht, bekannt (DE-OS 2 309 738), einen ventilartigen Klappenverschluß vorzusehen, über den mit Hilfe eines eindrückbaren Ballons durch mehr oder weniger häufige Pumpvorgänge vom Benutzer ein gewisser Druck auf die Pastensäule ausgeübt werden kann. Hierbei handelt es sich jedoch um eine andere Gattung von Kugelschreiberminen als bei der Erfindung.It is indeed known in ballpoint pen refills in which the paste column is not constantly under gas pressure (DE-OS 2 309 738) to provide a valve-like flap closure via which a certain pressure is applied by the user with the aid of an insertable balloon through more or less frequent pumping operations the paste column can be exercised. However, this is a different type of ballpoint pen refills than in the invention.
In weiterer Ausgestaltung der Erfindung besteht bei einer nach dem angegebenen Verfahren hergestellten Kugelschreibermine der Ventilverschluß aus einem im Pastenrohr angeordneten Ventilstopfen, der einen dem äußeren Ende des Pastenrohrs zugekehrten Abschnitt mit einem dem Innendurchmesser des Pastenrohrs entsprechenden Durchmesser und einen der Pastensäule zugekehrten Abschnitt kleineren Durchmessers aufweist, wobei in Achsrichtung des Ventilstopfens eine Bohrung verläuft, die sich vom äußeren Ende des Ventilstopfens bis in den Abschnitt kleineren Durchmessers erstreckt, wobei ferner im Abschnitt kleineren Durchmessers eine in dessen Außenumfang mündende radiale Bohrung vorgesehen ist, die mit der axialen Bohrung in Verbindung steht, und wobei schließlich auf dem Abschnitt kleineren Durchmessers eine Manschette aus elastischem Material angeordnet ist. Dieser Ventilverschluß zeichnet sich durch einfachen Aufbau aus und gewährleistet auch bei hohem Gasdruck in der Mine eine sichere Abdichtung.In a further embodiment of the invention, in a ballpoint pen refill manufactured according to the specified method, the valve closure consists of a valve plug arranged in the paste tube, which has a section facing the outer end of the paste tube with a diameter corresponding to the inside diameter of the paste tube and a section of smaller diameter facing the paste column, wherein a bore extends in the axial direction of the valve plug, which extends from the outer end of the valve plug into the section of smaller diameter, furthermore in the section of smaller diameter a radial bore opening into its outer circumference is provided, which communicates with the axial bore, and finally, a sleeve made of elastic material is arranged on the section of smaller diameter. This valve closure is characterized by a simple structure and ensures a secure seal even with high gas pressure in the mine.
Die Erfindung wird nachfolgend anhand der Zeichnung näher erläutert, in der eine Kugelschreibermine im Querschnitt dargestellt ist.The invention is explained in more detail below with reference to the drawing, in which a ballpoint pen refill is shown in cross section.
Die Kugelschreibermine enthält ein Pastenrohr 1, das an seiner Vorderseite mit der kugelförmigen Schreibspitze 2 und an seiner Rückseite mit einem Abschlußpfropfen 3 verschlossen ist. Vor dem Aufbringen des Abschlußpfropfens 3 wird die Schreibpaste 8 in das Pastenrohr in der erforderlichen Menge eingefüllt und im Abstand von der Pastensäule dann ein Ventilstopfen in das Pastenrohr eingesetzt. Der Ventilstopfen enthält einen dem äußeren Ende des Pastenrohrs zugekehrten Abschnitt 4, dessen Außendurchmesser dem Innendurchmesser des Pastenrohrs etwa entspricht, so daß der Ventilstopfen dichtend im Pastenrohr befestigt werden kann. An den Abschnitt 4 schließt sich in.Richtung zur Schreibspitze 2 ein Abschnitt 9 an, der einen kleineren Durchmesser als der Abschnitt 4 besitzt. In Achsri.chtung des Ventilstopfens verläuft eine Bohrung 5, die sich von dem äußeren Ende des Abschnittes 4 bis in den Abschnitt 9 erstreckt und darin als Sackbohrung endet. In radialer Richtung verläuft durch den Abschnitt 9 eine Bohrung 10, die mit der axialen Bohrung 5 in Verbindung steht und mit dieser gemeinsam den Einlaßkanal für das Gas in den Raum 7 über der Pastensäule 8 bildet. Auf dem zylindrischen Abschnitt 9 ist eine elastische Dichtmanschette stramm aufgebracht, die die Bohrung 10 verschließt und damit einen Gaseintritt in den Raum 7 zuläßt, einen Rückstrom jedoch verhindert.The ballpoint pen refill contains a paste tube 1, which has the spherical writing tip 2 on its front side and is closed at the back with a
Der Ventilstopfen wird einschließlich der Dichtmanschette als vorgefertigtes Element in das Pastenrohr eingeschoben und darin befestigt, worauf der Abschlußpfropfen 3 angebracht wird, der hohl ausgebildet ist, so daß das Gas ungehindert zum Ventilstopfen gelangen kann. Die Beaufschlagung des Raums 7 mit dem gewünschten Gasdruck erfolgt dadurch, daß die fertig fabrizierte Kugelschreibermine zugleich mit einer Vielzahl anderer Minen gemeinsam in einen Behälter eingegeben wird, in dem Gas auf einen Druck komprimiert wird, der dem Druck entspricht, der auch im Raum 7 der Mine erwünscht ist. Über den Ventilverschluß gleicht sich dann der Druck im Raum 7 dem im Druckbehälter herrschenden Druck an, der in dem Raum 7 auch erhalten bleibt, wenn der Druckbehälter wieder drucklos gemacht wird. Bs/ge --- The valve plug, including the sealing sleeve, is inserted as a prefabricated element into the paste tube and fastened therein, whereupon the
Claims (2)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2951611 | 1979-12-21 | ||
| DE2951611 | 1979-12-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0031092A1 true EP0031092A1 (en) | 1981-07-01 |
| EP0031092B1 EP0031092B1 (en) | 1985-09-04 |
Family
ID=6089195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP80107824A Expired EP0031092B1 (en) | 1979-12-21 | 1980-12-11 | Method for manufacturing large numbers of ball-point pen refills |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4587999A (en) |
| EP (1) | EP0031092B1 (en) |
| AU (1) | AU542356B2 (en) |
| DE (1) | DE3071063D1 (en) |
| FI (1) | FI70181C (en) |
| NO (1) | NO152927C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1028854A1 (en) * | 1997-11-05 | 2000-08-23 | Bic Corporation | Double seal system for pressurized writing device |
| CN103085533A (en) * | 2013-01-18 | 2013-05-08 | 四川大学 | Pen core capable of being recycled |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4716945A (en) * | 1984-06-06 | 1988-01-05 | Canon Kabushiki Kaisha | Recording instrument ink-path treatment process |
| US5738459A (en) * | 1995-05-08 | 1998-04-14 | Eversharp Pen Company | "Pressurized refill with multiple seal valve core plug and a method for pressurizing a refill" |
| US5628576A (en) * | 1995-05-08 | 1997-05-13 | Eversharp Pen Company | Pressurized refill with double seal valve core plug and a method for pressurizing a refill |
| US5975151A (en) * | 1998-08-06 | 1999-11-02 | Ipg Corporation | Charging a refrigerator with non-volatile liquid |
| US6539987B1 (en) | 2000-08-10 | 2003-04-01 | Louis Dischler | Method of pressure processing enclosures having bi-stable valves |
| US6345649B1 (en) | 2000-08-10 | 2002-02-12 | Louis Dischler | Bi-stable valve especially useful for pressurizing pen refills |
| US7661121B2 (en) * | 2006-06-22 | 2010-02-09 | Tivo, Inc. | In-band data recognition and synchronization system |
| CN110667281A (en) * | 2019-10-09 | 2020-01-10 | 汪江 | Pen |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE857772C (en) * | 1950-03-22 | 1952-12-01 | Mentmore Mfg Co Ltd | Ball point instrument, especially ballpoint pen |
| DE900909C (en) * | 1949-06-23 | 1954-01-04 | Compania Uruguaya De Fomento I | pen |
| DE2153579A1 (en) * | 1970-11-06 | 1972-05-10 | Mitsubishi Pencil Co. Ltd., Tokio | Ballpoint pen refills and process for their manufacture |
| DE2559158A1 (en) * | 1975-01-21 | 1976-07-22 | Intrama Sa | MARKING DEVICE WITH A RESILIENT TUBE CONTAINING A MARKING SUBSTANCE AND AUTOMATIC MARKING MACHINE PROVIDED WITH THIS DEVICE |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US744750A (en) * | 1902-04-17 | 1903-11-24 | James William Green | Process of preserving eggs. |
| US722505A (en) * | 1902-05-03 | 1903-03-10 | Louis Hanson | Apparatus for preserving and creosoting wood. |
| US2519341A (en) * | 1947-02-17 | 1950-08-22 | Carl A Barstow | Fountain pen |
| FR58110E (en) * | 1948-03-25 | 1953-09-21 | Process for supplying ink to a stylograph and stylograph for carrying out this process | |
| US2938499A (en) * | 1956-07-20 | 1960-05-31 | Lindenbaum Bernard | Combination pen and pressurized filling means |
| US3115868A (en) * | 1958-03-05 | 1963-12-31 | Molin Arrigo Varettoni De | Pressurized stopper construction |
| US3094152A (en) * | 1962-01-26 | 1963-06-18 | Power Spray Company Inc | Liquid dispensing device for floor machines |
| US3286741A (en) * | 1963-06-24 | 1966-11-22 | Elgin American International I | Fuel valve |
| US3282306A (en) * | 1964-04-02 | 1966-11-01 | Pastemaster Inc | Process and apparatus for the charging of containers |
| US3799218A (en) * | 1972-03-27 | 1974-03-26 | M Douglass | Apparatus for dispensing compressed gas at programmed pressure and volume |
| US3850136A (en) * | 1972-05-24 | 1974-11-26 | Gen Electric | Positive pressure coating device |
| US3863686A (en) * | 1972-10-16 | 1975-02-04 | V Mark Automation Ltd | Apparatus and process for article filling under reduced pressure |
| US3854826A (en) * | 1973-12-26 | 1974-12-17 | Artex Hobby | Fluid applicator pressure control device |
| GB2035147A (en) * | 1978-11-16 | 1980-06-18 | Composite Applic Inc | Fluid dispensing |
-
1980
- 1980-12-11 EP EP80107824A patent/EP0031092B1/en not_active Expired
- 1980-12-11 DE DE8080107824T patent/DE3071063D1/en not_active Expired
- 1980-12-15 FI FI803911A patent/FI70181C/en not_active IP Right Cessation
- 1980-12-19 NO NO803888A patent/NO152927C/en unknown
- 1980-12-22 AU AU65663/80A patent/AU542356B2/en not_active Ceased
- 1980-12-22 US US06/219,284 patent/US4587999A/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE900909C (en) * | 1949-06-23 | 1954-01-04 | Compania Uruguaya De Fomento I | pen |
| DE857772C (en) * | 1950-03-22 | 1952-12-01 | Mentmore Mfg Co Ltd | Ball point instrument, especially ballpoint pen |
| DE2153579A1 (en) * | 1970-11-06 | 1972-05-10 | Mitsubishi Pencil Co. Ltd., Tokio | Ballpoint pen refills and process for their manufacture |
| DE2559158A1 (en) * | 1975-01-21 | 1976-07-22 | Intrama Sa | MARKING DEVICE WITH A RESILIENT TUBE CONTAINING A MARKING SUBSTANCE AND AUTOMATIC MARKING MACHINE PROVIDED WITH THIS DEVICE |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1028854A1 (en) * | 1997-11-05 | 2000-08-23 | Bic Corporation | Double seal system for pressurized writing device |
| EP1028854A4 (en) * | 1997-11-05 | 2005-06-22 | Bic Corp | Double seal system for pressurized writing device |
| CN103085533A (en) * | 2013-01-18 | 2013-05-08 | 四川大学 | Pen core capable of being recycled |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3071063D1 (en) | 1985-10-10 |
| FI70181B (en) | 1986-02-28 |
| NO152927B (en) | 1985-09-09 |
| FI803911L (en) | 1981-06-22 |
| FI70181C (en) | 1986-09-15 |
| NO803888L (en) | 1981-06-23 |
| EP0031092B1 (en) | 1985-09-04 |
| AU6566380A (en) | 1981-06-25 |
| AU542356B2 (en) | 1985-02-21 |
| NO152927C (en) | 1985-12-18 |
| US4587999A (en) | 1986-05-13 |
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