Source: https://patents.google.com/patent/EP2013032A1/en
Timestamp: 2020-08-09 19:03:10
Document Index: 765593044

Matched Legal Cases: ['art 29', 'arts 22', 'art 43', 'art 43', 'arts 22', 'art 43', 'art 29', 'art 29', 'art 29', 'art 11', 'art 11', 'art 29', 'art 29', 'art 11', 'art 11', 'art 29', 'art 32', 'art 31', 'art 32', 'art 31', 'art 32', 'art 32', 'art 31', 'art 31', 'art 43', 'art 45', 'art 43', 'art 43', 'art 22', 'art 52', 'art 51', 'art 52', 'art 43', 'art 51', 'art 52', 'art 43', 'art 31', 'art 32', 'arts 22', 'arts 22', 'art 52', 'arts 22', 'art 52', 'art 43', 'arts 22', 'art 52', 'art 43', 'art 45', 'arts 22']

EP2013032A1 - Slide type writing tools having device for preventing dryness - Google Patents
Slide type writing tools having device for preventing dryness
EP2013032A1
EP2013032A1 EP07746215A EP07746215A EP2013032A1 EP 2013032 A1 EP2013032 A1 EP 2013032A1 EP 07746215 A EP07746215 A EP 07746215A EP 07746215 A EP07746215 A EP 07746215A EP 2013032 A1 EP2013032 A1 EP 2013032A1
EP07746215A
EP2013032B1 (en
EP2013032A4 (en
2007-04-26 Application filed by Morris Corp filed Critical Morris Corp
2009-01-14 Publication of EP2013032A1 publication Critical patent/EP2013032A1/en
2011-04-13 Publication of EP2013032A4 publication Critical patent/EP2013032A4/en
2012-07-18 Publication of EP2013032B1 publication Critical patent/EP2013032B1/en
230000002265 prevention Effects 0.000 claims abstract description 24
Disclosed herein is a slide type writing tool having a dryness prevention unit. The writing tool includes a hollow shaft (10) having a nib hole, with shutter shaft seats protruding from the inner wall of the shaft. A cartridge (20) is secured to the shaft. A knock part is inserted into an insert hole formed in the shaft, and a pair of pressing parts is provided on a nib extension shaft of the cartridge. A rear 0-ring (30) surrounds an end of the cartridge. A spherical shutter (40) is held in the rear 0-ring (30), and has a spherical shutter part to isolate a nib from the exterior. A front O-ring (50) contacts the shutter part and the nib hole. A spring contacts at a first end thereof a lower end of a step of the cartridge, and at a second end thereof a step of the rear O-ring.
[DESCRI PTION]
The present invention relates, ingeneral, to writing tools and, more particularly, to a slide type writing tool having a dryness prevention unit, which is constructed so that a nib which dispenses ink supplied from a cartridge is projected out only when the writing tool is in use, and the nib is retracted into the writing tool to be sealed therein when the writing tool is not in use.
Thus, writing tools having high volatility, for example, a marker pen, a correction pen, a roller ball pen, a highlighter, etc. , must have caps, although it is inconvenient to open or close the caps . The reason why the writing tools having high volatility have the caps is that the ink of the nibs dries up when the nibs of the writing tools are exposed to the air, thus shortening the life spans of the writing tools. In order to solve the problems, efforts have been made to develop a writing tool that prevents the ink of the writing tool, which is a liquid or a semi-liquid ink, or a volatile or non-volatile ink, from drying up, while protecting a nib of the writing tool.
In order to prevent a nib from drying up and protect the nib, Japanese Patent No. 1987-0012570 was proposed, and is entitled λcapless writing tool having dryness prevention unit' . The writing tool disclosed in the document has a slide type structure. When a user presses a push-button of the writing tool once, a cover is opened so that a nib hole is opened by the tensile force of an elastic cord. Further, when the user presses the push-button one more time, the cover is closed, thus preventing ink from drying up.
In Korean Patent Appln. No. 10-2000-65693 there was proposed a λwriting tool with inseparable elastic cap' . According to the cited document, the writing tool is provided with an elastic cap. The elastic cap has, at a predetermined position thereof, a cut slit through which a nib passes . Further, a predetermined portion of the elastic cap, which is opposite the cut slit, is in close contact with a guide groove of the writing tool. Thus, when the cap moves backward, the nib is exposed outside so that a user can write with the instrument. Conversely, when the cap moves forward, the cap prevents the ink from drying. The middle portion of the writing tool has the same shape as the body of a typical writing tool. However,., the writing tool according to Korean Patent Appln. No. 10-2000-65693 has a problem in that the portion around the cut slit may be stained with the ink of the nib, as the nib is exposed outside through the cut slit. Further, since the cut slit is closed by a subsidiary unit, such as a rubber ring, which is readily elastically deformed, the nib is in direct contact with the cut slit and is thereby broken or damaged, and the durability of the writing tool is relatively low. The writing tool is problematic in that the rubber ring is exposed outside the cut slit, so that the rubber ring may be damaged when the rubber ring comes into contact with an external object. Further, the cut slit may become deformed after frequent use of the writing tool, and thus the efficiency with which the nib is sealed may be deteriorated.
[Disclosure] [Technical. Problem]
Another object of the present invention is to provide a slide type writing tool having a dryness prevention unit, in which front and rear 0-rings having a sealing function are made of special rubber, thus minimizing the volatilization of ink of a nib.
In order to accomplish the objects, the present invention provides a slide type writing tool having a dryness prevention unit, including a hollow shaft 10 having at a first end thereof a nib hole 13, with a shutter shaft seat 12 protruding from an inner wall of the shaft; a cartridge 20 secured to an interior of the shaft 10 to correspond to a center of the nib hole 13, and including a knock part 29 inserted into an insert hole 14 formed in a second end of the shaft 10, and a pair of pressing parts 22 provided on an end of a nib extension shaft of the cartridge; a rear 0-ring 30 surrounding an end of the cartridge 20; a spherical shutter 40 having a shape of a hollow sphere, held in the rear 0-ring 30, and having a spherical shutter part 43 to isolate a nib 24 from an exterior; a front 0-ring 50 contacting the shutter part 43, and coming into close contact' with the nib hole 13; and a spring 7 contacting at a first end thereof a lower end of a step of the cartridge 20, and contacting at a second end thereof a step of the rear 0-ring 30, thus axially biasing either the rear 0-ring 30 or the cartridge 20 within a stroke distance of the cartridge 20, whereby the spherical shutter 40 is rotated by the pressing parts 22, so that the shutter part 43 opens the front 0-ring 50, and thus the nib 24 is projected from the nib hole 13.
Further, the slide type writing tool having the dryness prevention unit according to the present invention has an integrated control module, so that the assembly of the writing tool is simple, and the production cost of parts can- be reduced, and thus the writing tool has high marketability, and appeals to consumers.
[Description of Drawings] Fig.1 is an exploded perspective view illustrating the external appearance of a slide type writing tool having a dryness prevention unit, according to an embodiment of the present invention;
Fig. 3^ is a perspective view showing a spherical shutter; Fig. 4 is a front view showing the spherical shutter of Fig. 3;
Fig. 6 is a perspective view showing a rear 0-ring; Fig. 7 is a front sectional view showing a shaft of the writing tool ; Fig. 8 is a side sectional view showing the shaft of the writing tool ;
Fig. 9 is a perspective view showing a front 0-ring;
Hereinafter, a slide type writing tool having a dryness prevention unit , according to the preferred embodiment of the present invention, will be described in detail with reference to the accompanying drawings .
Fig .1 is an exploded perspective view illustrating the external appearance of a slide type writing tool having a dryness prevention unit, according to an embodiment of the present invention, and Fig. 2 is a perspective view showing -the slide type writing tool having the dryness prevention unit, according to the present invention.
Further, Fig. 3 is a perspective view showing a spherical shutter, and Fig. 4 is a front view showing the spherical shutter of Fig . 3 ,
Further, Fig. 5 is a partial enlarged view showing a protrusion of the spherical shutter of Fig. 3, and Fig. 6 is a perspective view showing a rear 0-ring. Further, Fig. 7 is a front sectional view showing a shaft of the writing tool, and Fig. 8 is a side sectional view showing the shaft of the writing tool.
Fig. 9 is a perspective view showing a front 0-ring, Fig. 10 is a front sectional view showing the assembled state of the slide type writing tool having the dryness prevention unit, according to the present invention, and Fig. 11 is a side sectional view of Fig.
That is, the user holds the shaft 10 of the writing tool in one hand, and then presses the knock part 29, which is provided at the upper end of the writing tool and corresponds to a pushing part, with his or her thumb. At this time, the spherical shutter, which is operated in conjunction with the knock part 29 and a cartridge, rotates at a rotating angle of +90° in an opening direction, so that a passage is axially aligned with a nib 24, and simultaneously, the nib hole 13 of the shaft 10 is opened. Afterwards, the nib 24 projects out from the nib hole 13 through the passage of the spherical shutter, so that the user can write with the writing tool.
Conversely, when the user presses the knock part 29, the projected nib 24 is returned to its original position, that is, is retracted into the shaft 10 by a spring which is provided in the shaft. At this time, the spherical shutter is rotated at a rotating angle of 90° in a closing direction, so that the passage is perpendicular to the nib 24, and simultaneously, the nib hole 13 of the shaft 10 is closed.
Referring to Fig. 1, the slide type writing tool having the dryness prevention unit according to the present invention mainly includes five parts, that is, the shaft 10, the cartridge 20, a rear 0-ring 30, the spherical shutter 40, and a front O-ring 50. The writing tool of this invention requires a smaller number of parts than a conventional writing tool, which requires ten or more parts, and is thus easy to assemble.
In the present invention, the shaft 10 may be manufactured through an injection molding process or a molding process using one of rubber, silicone, and soft plastics, thus providing a single body or a body which is divided into two parts .
Further, the shaft 10 has the general characteristics of plastics, namely, elasticity and flexibility. The nib hole 13 is formed in one end of the shaft 10 and has a size which is sufficient to accommodate the nib 24 of the cartridge 20, while an insert hole 14 is formed in the other end of the shaft 10 and has a size which is sufficient to accommodate the body of the cartridge 20. Further, an extension control part 11, which is designed to have various forms, is integrated with or is mechanically coupled to the outer circumference of the other end of the shaft 10. Preferably, the extension control part 11 is coupled to a locking part, so that the nib 24 maintains an extended or retracted state.
Referring to Fig. 1, the knock part 29 serves to transmit a user's pushing force to the cartridge 20. Such a knock part 29 has the shape of a tube which has a smaller circumferential part and a larger circumferential part. One end of the knock part, corresponding to the smaller circumferential part, is open, while the other end of the knock part, corresponding to the larger circumferential part, is closed. Further, according to the present invention, the cartridge 20 has a large-capacity tank, which is capable of continuously and evenly discharging ink through the nib 24 for a predetermined period of time depending on the capacity of the ink tank.
The nib extension shaft 23 has the shape of a hollow circular tube, supplies ink to the nib, and has a diameter smaller than that o f the tank .
For the nib 24, a tip for oil- or water-based ink, a correction fluid discharge tip, a tip for highlighters, a tip for marker pens, or another kind of tip is used according to the kind of writing tool.
It is possible to use an ink feeding method appropriate to the kind of tip.
Further, the cartridge 20 is operated in conjunction with the extension control part 11. An extension mechanism which is similar or equal to a safe knock type mechanism, disclosed in Korean Patent Appln. Nos. 10-2003-55414 and 10-2003-56940, which relate to a safe knock-type writing tool having a low noise cartridge extension mechanism and were filed with the KIPO by the applicant of this invention, may be provided on the locking part. When the cartridge 20 is inserted into the cartridge insert hole 14 of the shaft 10, and a user then manipulates the extension control part 11, the nib 24 can reciprocate within a predetermined stroke range such that the nib 24 is extended out from or retracted into the nib hole 13 of the shaft 10 by the above extension mechanism, and can temporarily stop at both ends of the stroke.
One end of the spring 7 contacts the lower end of a step of the cartridge 20. The spring 7 is operated to axially bias either the rear O-ring 30 or the cartridge 20 within the stroke distance of the cartridge 20.
For example, when the cartridge 20 and the knock part 29 move forwards by a predetermined stroke distance, the spring 7 is compressed. Thereby, the spring 7 generates elastic restoring force, such that the compressed state is restored to an extended state .
The rear 0-ring 30 and the front 0-ring 50 are formed by a hydraulic press using a rubber-type elastic material. Thus, even if the rear 0-ring and the front 0-ring are repeatedly bent, they are resistant to fatigue, so that durability is good. Further, the rear 0-ring 30, the spherical shutter 40, and the front 0-ring 50 can be in closer surface contact with each other, thus very effectively preventing ink from drying up.
Further, in order to minimize rubber friction between the rear 0-ring 30 and the spherical shutter 40 or between the spherical shutter 40 and the front O-ring 50 when the corresponding parts are coupled to or separated from each other, a lubricant is applied to the parts. The lubricant uses silicone oil, having a viscosity of 100, 000 or higher.
As shown in Fig. 6, the rear O-ring 30 has a sealing part 32 and a spherical-shutter support part 31. The sealing part 32 is a cylinder which has a diameter corresponding to that of the nib extension shaft 23, so that the sealing part air-tightly surrounds the outer circumference of the nib extension shaft 23 of the cartridge 20. Further, the spherical-shutter support part 31 extends from one end of the sealing part 32, and has a larger diameter than the sealing part 32, to thus accommodate the spherical shutter 40 therein. The spherical-shutter support part 31 has wings, each having the shape of a half moon. The wings are provided on both sides of one end of the spherical-shutter support part 31 in such a way as to protrude downwards. Thus, the spherical-shutter support part serves to support the spherical shutter 40 such that the spherical , shutter rotates around protrusions without being dislodged from a predetermined position.
As shown in Figs. 3 ~ 5, the spherical shutter 40 includes shutter shafts 41, locking steps 42, a shutter part 43, side surfaces 44, and a holding part 45. The shutter part 43 serves as a door for opening or closing the nib hole 13. The spherical shutter 40 has a hollow spherical shape. A passage, which passes through both sides of the spherical shutter, is- axially defined in the spherical shutter, thus serving as a path along which the cartridge is extended or retracted when the writing tool is operated.
The shutter part 43 is in close contact with the front 0-ring 50, which will be described below in detail, and seals the nib in conjunction with the rear 0-ring 30 so as to prevent the ink of the nib from being volatilized.
Each side surface 44 is a fan-shaped flat plate having an arc of about 270°, with the locking st^p 42 formed in the center of the side surface. The locking step 42 is shaped to be concave, and is directly subjected to the pressure of the corresponding pressing part 22 of the cartridge 20.
As shown in Fig. 3, each shutter shaft 41 is seated on a corresponding shutter shaft seat 12 of the shaft 10, which will be described below in detail, so that the shutter shaft moves along the shutter shaft seat 12. Each shutter shaft 41 is a rounded bar, and has a cam shape. Thus, when each shutter shaft 41 rotates, as shown by the dotted lines, the center of the shutter shaft moves upwards . This is upward movement of the spherical shutter 40. That is, each shutter shaft 41 has a half-moon-shaped section, which has a major axis a and a minor axis b. When the shutter shaft rotates, the center of the shutter shaft moves upwards by a length which is obtained by subtracting b from a. Thus, the spherical shutter moves upwards by about 0.3mm, thus being disconnected from the front 0-ring 50.
As shown in Fig. I1 the shutter shaft seats 12 are provided at positions corresponding to the spherical shutter 40, which is held in the shaft, and are protruded to support the corresponding shutter shafts 41.
The lower surface of each shutter shaft seat 12 is a plane.
Both sides of the shutter shaft seat are inclined upwards from the lower surface in such a way that the upper portion of the shutter shaft seat is wide and the lower portion of the shutter shaft seat is narrow.
As shown in Fig. 9, the front O-ring 50 has a sealing part 52 and a head part 51. The sealing part 52 is the part which is in close contact with the shutter part 43 of the spherical shutter 40. Further, the sealing part is inserted into the shaft 10 in such a way as to be in close contact with the inner wall of the shaft 10. The head part 51 is inserted into the shaft 10 in such a way as to be in close contact with the inner wall and end of the nib hole 13 of the shaft 10.
As shown in the front sectional view and the side sectional view of Figs. 10 and 11, the front 0-ring 50 is secured to the shaft 10 in such a way that the outer surface of the front 0-ring is in close contact with the inner wall of the shaft. Particularly, the sealing part 52 is in close contact with the shutter part 43 of the spherical shutter 40.
The spherical-shutter support part 31 of the rear 0-ring 30 holds the spherical shutter 40, and especially surrounds the side surfaces 44 of the spherical shutter, thus preventing the undesirable removal of the spherical shutter 40.
Further, the sealing part 32 of the rear 0-ring 30 surrounds the nib extension shaft 23 of the cartridge 20.
Further, both ends of the spring 7 contact the step of the coupling part of the cartridge 20 and the step of the rear 0-ring 30, so that the spring biases the rear 0-ring 30 and the cartridge
20, which are secured to the shaft 10, by a small restoring force.
Further, the terms "forward direction" and "backward direction, " which will be used below, mean the direction facing the nib hole 13 and the direction facing the knock part '29, respectively. In particular, the closed state of Fig. 12 is the state in which the assembly of the parts of Figs. 10 and 11 has been completed.
As shown in Fig. 12, the nib 24 is surrounded by the spherical shutter 40. The rear 0-ring 30 and the cartridge 20 are biased relative to each other by the small restoring force of the spring 7, which contacts both the step of the coupling part of the cartridge 20 and the step of the rear 0-ring 30, and surrounds the nib extension shaft 23.
Further, the pressing parts 22 are separated from the locking steps 42 .
In this state, when force is applied to the knock part, as shown in Fig. 13, the cartridge 20 moves forwards. AL this Lime, Lhe pressing parts 22 press the locking steps 42 of the spherical shutter 40, so that the spherical shutter rotates around the shutter shafts
Further, as the spherical shutter 40 rotates, the close contact of the spherical shutter with the sealing part 52 of the front 0-ring 50 is released.
When the knock part is continuously pressed, as shown in Fig.
14, the pressing parts 22 continue to press the locking steps 42.
Thereby, the spherical shutter 40 rotates further, so that the sealing part 52 is rotated further from the shutter part 43 and is opened .
Further, as the pressing parts 22 continue to move forwards, as shown in Fig. 15, the nib 24 is projected through an opening between the sealing part 52 and the shutter part 43. Further, the entire spherical shutter 40 is moved upwards by the rotation of the shutter shafts 41.
Thereby, as shown in Fig. 16, the nib extension shaft 23, as well as the nib of the cartridge 20, is projected out of the nib hole 13. Until the knock part becomes locked to the shaft 10 and thus does not move forwards any more, the cartridge 20 passes through the holding part 45 of the spherical shutter 40 and moves forwards, thus being projected out of the nib hole 13. As such, the nib 24, which is projected out of the shaft 10 and is then locked in the projected position, is used.
In order to retract the nib 24 into the shaft 10 and seal the nib in the shaft again, a user presses the knock part so as to release it from the shaft 10. Thus, as shown in Fig. 17, the cartridge 20 moves backwards. At this time, the pressing parts 22 are locked to the locking steps 42 of the spherical shutter 40, thus pushing up the locking steps 42.
A slide type writing tool having a dryness prevention unit, comprising : a hollow shaft (10) having at a first end thereof a nib hole (13) , with a shutter shaft seat (12) protruding from an inner wall of the shaft; a cartridge (20) secured to an interior of the shaft (10) to correspond to a center of the nib hole (13) , and comprising a knock part (29) inserted into an insert hole (14) formed in a second end of the shaft (10) , and a pair of pressing parts (22) provided on an end of a nib extension shaft of the cartridge; a rear 0-ring (30) surrounding an end of the cartridge (20) ; a spherical shutter (40) having a shape of a hollow sphere, held in the rear 0-ring (30) , and having a spherical shutter part (43) to isolate a nib (24) from an exterior; a front 0-ring (50) contacting the shutter part (43), and coming into close contact with the nib hole (13) ; and a spring (7) contacting at a first end thereof a lower end of a step of the cartridge (20) , and contacting at a second end thereof a step of the rear 0-ring (30) , thus axially biasing either the rear
0-ring (30) or the cartridge (20) within a stroke distance of the cartridge (20) , whereby the spherical shutter (40) is rotated by the pressing parts (22), so that the shutter part (43) opens the front 0-ring (50) , and thus the nib (24) is projected from the nib hole (13) .
The slide type writing tool according to claim 1, wherein the rearO-ring (30) and the front 0-ring (50) are made of a thermosetting butyl rubber material, and are manufactured through a forming method which is suitable therefor.
The slide type writing tool according to claim 2, wherein a lubricant, which is applied between the rear 0-ring (30) "and the spherical shutter (40) or between the spherical shutter (40) and the front O-riήg (50) so as to minimize friction of rubber when the rear 0-ring is coupled to or separated from the spherical shutter or the spherical shutter is coupled to or separated from the front 0-ring, is silicone oil, which is harmless to people.
The slide- type writing tool according to claim 1, wherein the rear 0-ring (30) comprises: a sealing part (32) having a shape of a cylinder which has a diameter corresponding to a diameter of the nib extension shaft (23) such that the sealing part air-tightly surrounds an outer circumference of the nib extension shaft (23) of the cartridge (20) ; and a spherical -shutter support part (31) having a diameter which is larger than the diameter of the sealing part (32) , and supporting the spherical shutter (40) .
[Claim 5] The slide type writing tool according to claim 4, wherein the spherical -shutter support part (31) comprises half-moon-shaped wings protruding from both sides of an end of the spherical-shutter support part, thus supporting the spherical shutter (40) so that the spherical shutter rotates around protrusions without being dislodged from a predetermined position, and causing the nib (24) to be sealed by the spherical shutter (40) .
The slide type writing tool according to claim 1, wherein the spherical shutter (40) comprises: a spherical shutter part (43) provided on a lower portion of the spherical shutter; a pair of side surfaces (44) extending perpendicularly from both ends of the shutter part (43) , and arranged to be parallel to each other, thus being in surface contact with the spherical-shutter support part (31), each of the side surfaces being a fan- shaped plate; a locking step provided on a center of each of the side surfaces, and shaped to be concave, thus being directly subjected to pressure of each of the pressing parts (22) of the cartridge (20) ; and a shutter shaft (41) comprising a protrusion which perpendicularly extends outwards from the locking step (42) of each of the side surfaces (44) , and is seated on the shutter shaft seat (12) of the shaft (10) .
The slide type writing tool according to claim 5, wherein the spherical shutter (40) comprises the cam-shaped shutter shaft (41) , so that, when the shutter shaft (41) is rotated, a center of the shutter shaft is moved upwards, and the spherical shutter (40) thus moves upwards .
[Claim 8] The slide type writing tool according to claim 5, wherein a lower portion of the shutter shaft seat (12) is a plane, and both sides of the shutter shaft seat are inclined upwards from the lower portion in such a way that an upper portion of the shutter shaft seat is wide and the lower portion of the shutter shaft seat is narrow, so that, as the shutter shaft rotates while contacting the lower portion and inclined sides of the shutter shaft seat (12), the spherical shutter (40) is pushed up.
The slide type writing tool according to claim 1, wherein the front 0-ring (50) comprises: a sealing part (52) , closely contacting the shutter part (43) of the spherical shutter (40), and inserted into the shaft (10) in such a way as to be in close contact with the inner wall of the shaft; and a head part (51) inserted into the shaft in such a way as to be in close contact with an inner wall and an end of the nib hole (13).
EP20070746215 2006-04-28 2007-04-26 Slide type writing tools having device for preventing dryness Active EP2013032B1 (en)
EP2013032A1 true EP2013032A1 (en) 2009-01-14
EP2013032A4 EP2013032A4 (en) 2011-04-13
EP2013032B1 EP2013032B1 (en) 2012-07-18
EP20070746215 Active EP2013032B1 (en) 2006-04-28 2007-04-26 Slide type writing tools having device for preventing dryness
JP5365013B2 (en) * 2008-01-31 2013-12-11 ぺんてる株式会社 Retractable applicator
JP4973688B2 (en) * 2009-05-20 2012-07-11 ぺんてる株式会社 Intrusive writing instrument
JP4973693B2 (en) * 2009-06-09 2012-07-11 ぺんてる株式会社 Intrusive writing instrument
JP5496046B2 (en) * 2010-10-06 2014-05-21 ゼブラ株式会社 Writing instrument
JP6366757B1 (en) * 2017-02-06 2018-08-01 モリス コーポレーションＭｏｒｒｉｓ Ｃｏｒｐｏｒａｔｉｏｎ Writing instrument with automatic sealing structure
JP6387129B2 (en) * 2017-02-10 2018-09-05 モリス コーポレーションＭｏｒｒｉｓ Ｃｏｒｐｏｒａｔｉｏｎ Writing instrument assembly structure
CA2475861A1 (en) * 2002-02-13 2003-08-21 Innodesk, Inc. Capless retractable sealed marking instrument with forward chamber
See also references of WO2007126253A1 *
JP2009535233A (en) 2009-10-01
TWI224056B (en) 2004-11-21 Writing instrument
WO2011096357A1 (en) 2011-08-11 Writing tool
JP5551235B2 (en) 2014-07-16 Rotating and retractable writing instrument with anti-drying device
KR20060127117A (en) 2006-12-11 Advancing/retracting mechanism
JP4955072B2 (en) 2012-06-20 Seal assembly for retractable tools
KR20050071700A (en) 2005-07-07 Retractable writing material
KR101293138B1 (en) 2013-08-12 Slide type writing tools having device for preventing dryness
US7303349B2 (en) 2007-12-04 Pen adapted to be pressurized
KR100549117B1 (en) 2006-02-06 Slide type writing tools having device for preventing dryness
JP5969601B2 (en) 2016-08-17 Multifunctional writing instrument with extrusion mechanism
KR100734903B1 (en) 2007-07-03 Slide type writing tools having device for preventing dryness
Ipc: B43K 5/17 20060101AFI20080207BHEP
Ipc: A45D 40/02 20060101ALI20110310BHEP
Ipc: A45D 40/20 20060101ALI20110310BHEP
Ipc: A45D 40/20 20060101ALI20120104BHEP
Ipc: B43K 5/17 20060101AFI20120104BHEP
Ipc: B43K 8/02 20060101ALI20120104BHEP
Ipc: B43K 24/08 20060101ALI20120104BHEP
Ipc: A45D 40/02 20060101ALI20120104BHEP
Ipc: B43L 19/00 20060101ALI20120104BHEP
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