Including Reservoir And Feeder Patents (Class 401/222)
  • Patent number: 9132692
    Abstract: In order to provide a writing instrument in which a writing direction can be visually recognized in a broad range at a visual part of a pen tip and which can surely write to end of writing, the writing instrument is endowed with a constitution in which a pen tip is equipped with a porous member as a writing part and a holding member holding the above porous member and having at least one ink guiding part through which an ink contained in a barrel is provided to a writing part held by the holding member which is a visible part enabling to visually recognize a writing direction, wherein an area ratio of the visible part is 40% or more of the pen tip protruding from a tip part of the writing instrument.
    Type: Grant
    Filed: June 14, 2011
    Date of Patent: September 15, 2015
    Assignee: MITSUBISHI PENCIL COMPANY, LIMITED
    Inventors: Toshimi Kamitani, Hiroyuki Okuyama, Mitsuhiro Kawabata, Tadashi Kouriki
  • Patent number: 8915665
    Abstract: An improved nib for writing with ink on media that comprises a tube having a proximal opening, a slanted distal opening, an interior wall and an exterior wall, an exposed writing tip at a distal end of the nib, wherein the tip has a groove extending from the tip along at least a portion of the interior wall, and a slit extending from the tip along a part of the nib, wherein the tip is made of a ceramic material.
    Type: Grant
    Filed: December 8, 2011
    Date of Patent: December 23, 2014
    Inventor: Eliahou Gozlan
  • Patent number: 8684618
    Abstract: The two-side writing fountain pen of the present invention comprises an ink output means and a holding means which is provided for fastening the ink output means, and said ink output means includes a pen nib member and a feed member. The pen nib member includes a pen nib flake and a pen tip granulation element formed at the tip of the pen nib flake, wherein the pen tip granulation element is formed with a pen tip front contact section, a pen tip back contact section and an ink output passage communicating with the pen tip front contact section and the pen tip back contact section, and then the pen nib flake is provided with an ink guiding passage communicating with the ink output passage. The feed member includes an ink input section and an ink output section, said ink input section is provided within the holding means, and the ink output section connects with the ink guiding passage of the pen nib flake.
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: April 1, 2014
    Inventor: Yee-Shang Lai
  • Publication number: 20130322953
    Abstract: The two-side writing fountain pen of the present invention comprises an ink output means and a holding means which is provided for fastening the ink output means, and said ink output means includes a pen nib member and a feed member. The pen nib member includes a pen nib flake and a pen tip granulation element formed at the tip of the pen nib flake, wherein the pen tip granulation element is formed with a pen tip front contact section, a pen tip back contact section and an ink output passage communicating with the pen tip front contact section and the pen tip back contact section, and then the pen nib flake is provided with an ink guiding passage communicating with the ink output passage. The feed member includes an ink input section and an ink output section, said ink input section is provided within the holding means, and the ink output section connects with the ink guiding passage of the pen nib flake.
    Type: Application
    Filed: September 10, 2012
    Publication date: December 5, 2013
    Inventor: Yee-Shang LAI
  • Publication number: 20120294668
    Abstract: A fountain pen comprises a hollow barrel such as can be held by a user, a nib stably attached to one end of the hollow barrel, also an ink cartridge housed internally of the hollow barrel and having a given containment volume. The cartridge is connected to the nib by way of a feed through which ink flows to the nib, and deformable by expanding at least partially between a normally undeformed first configuration, and a deformed second configuration in which the containment volume created internally is greater than the containment volume in the undeformed configuration.
    Type: Application
    Filed: January 25, 2011
    Publication date: November 22, 2012
    Inventor: Gian Luca Malaguti
  • Patent number: 8162555
    Abstract: A method of forming a printing pin includes providing a printing pin having an exterior surface and an interior surface that defines a lumen or capillary tract. The pin is treated to render the exterior and interior surfaces hydrophilic. The lumen or capillary tract is filled with a blocking material. The exterior surface of the pin is coated with a hydrophobic material. The blocking material is then removed. The method produces a pin with selective wetting properties. The modified pins reduce solution or reagents use because no excess liquid is picked up on the exterior surface during loading. As a result, no pre-printing operation is needed to remove this excess liquid. Because no pre-printing operation is needed, the pins produce shorter printing times. In addition, due to improved control of liquid loading volume, it is possible to obtain smaller spots as well as more spots in a given run.
    Type: Grant
    Filed: July 20, 2006
    Date of Patent: April 24, 2012
    Assignee: The Regents of the University of California
    Inventors: Chang-Jin Kim, Jane G. Tsai
  • Publication number: 20120057924
    Abstract: A nib piece with high roundness is obtained in the following manner: in the forming of the nib piece, a punched hole is formed in a base portion of a punched plate which is to be bent; the base portion of the punched plate is bent and shaped into a tubular structure; a pipe member which is aligned with and accommodated in the tubular body, is disposed in an inner portion of the base portion of the punched plate having been bent; and the punched plate is shaped to obtain a structure to wrap an outer periphery of the pipe member. The punched plate includes an engageable joint portion, such as a protrusion and a recess, which engage each other and form a hooked edge when the punched plate is bent into a cylindrical form.
    Type: Application
    Filed: September 1, 2011
    Publication date: March 8, 2012
    Inventor: Shizuo YAMANAKA
  • Publication number: 20090273588
    Abstract: A force-sensing electronic pen comprises a user-replaceable cartridge, a retaining boot for securely retaining the cartridge, a force sensor coupled to the retaining boot, a spring for biasing the retaining boot towards engagement with the force sensor; and an end-stop for limiting travel of the retaining boot against the bias of the spring. The cartridge is extractable from the pen by pulling the cartridge against the bias of the spring until the retaining boot engages with the end-stop. When the retaining boot engages with the end-stop, further pulling of the cartridge releases the cartridge from the retaining boot.
    Type: Application
    Filed: July 5, 2009
    Publication date: November 5, 2009
    Inventors: Tobin Allen King, Kia Silverbrook
  • Patent number: 7600938
    Abstract: A refill for a correction pen is constructed of a molded article of a polyamide resin obtained from monomers having an aromatic ring or a naphthene ring, a molded article of a blend of two or more kinds of polyamide resins, or a molded article having a multi-layered structure of two or more layers whose innermost layer in contact with the correction fluid is constituted of a polyamide resin. The applying part of a refill unit mounted on a ballpoint type applicator having a pressurizing mechanism in linkage with clicking action is formed by press fitting the rear end of a ballpoint pen tip having a rotatable ball to the attachment portion at the front end of an ink reservoir and a metal tube is squeezed to cover the outer periphery of the attachment portion at the front end of the ink reservoir to which the tip is fitted.
    Type: Grant
    Filed: March 3, 2004
    Date of Patent: October 13, 2009
    Assignee: Mitsubishi Pencil Co., Ltd.
    Inventors: Kyoko Kobayashi, Makoto Ono, Akira Fukai, Takao Koyama, Hitoshi Nakamura, Kei Omoto, Tadashi Koriki
  • Publication number: 20080152420
    Abstract: A writing instrument, able to be filled with fluid from an external fluid source, and to be supplied with fluid from an internal fluid supply for enabling writing therewith. The writing instrument includes a body portion, which includes a point portion, including a tip portion, through which fluid is able to flow to enable filling of the writing instrument from the external fluid source and writing with fluid from the internal fluid supply, and a fluid filling element, able to be actuated to enable filling thereof from the external fluid source. The writing instrument also includes a housing, connectable to and disconnectable from the tip portion, for enclosing the fluid filling element upon connection to the tip portion, and for enabling access to the fluid filling element for operation upon disconnection from the tip portion. The tip portion further includes a rollerball, for enabling writing therewith.
    Type: Application
    Filed: December 20, 2006
    Publication date: June 26, 2008
    Inventor: Yair Greenberg
  • Patent number: 7325992
    Abstract: A gas-pressurized writing instrument simply constructed so that a compressed gas will not escape to the outside by providing a writing point assembly (10) at the front end (14a) of a tube member (14), storing an ink (12) to be fed to the writing point assembly (10) in the tube member (14), encasing at least part of the tube member (10) by a casing cylinder (18) formed of a material that presents low gas permeability or gas impermeability so as to form a space (16) communicating with the rear opening of tube member (14), sealing a compressed gas inside the space (16) so that the compressed gas will push the ink out to writing point assembly (10) to secure the writing performance, and covering the outer periphery of the casing cylinder (18) with an exterior member having thermal resistance or/and moisture resistance greater than that of the casing cylinder so that the casing cylinder can present low gas permeability or gas impermeability.
    Type: Grant
    Filed: January 30, 2003
    Date of Patent: February 5, 2008
    Assignee: Mitsubishi Pencil Kabushiki Kaisha
    Inventors: Kazuhiko Furukawa, Kiyoshi Fujisawa
  • Patent number: 7303351
    Abstract: A writing point assembly and an ink tube and/or a holder can be welded appropriately at a predetermined area without using ultrasonic waves, so as to be able to prevent dislodging of the writing point assembly, ink leakage and the like. The rear end part, of a metallic writing point assembly as a part of a writing instrument, is inserted into a joint, and is heated at the predetermined area (at least the fitted area in contact with the front end part of the joint), so as to weld the predetermined area of the writing point assembly to the surrounding part of the joint.
    Type: Grant
    Filed: January 30, 2003
    Date of Patent: December 4, 2007
    Assignee: Mitsubishi Pencil Kabushiki Kaisha
    Inventors: Kazuhiko Furukawa, Kiyoshi Fujisawa, Yoshihide Ishii, Daisen Kato
  • Patent number: 7223037
    Abstract: Provided is a writing instrument comprising an ink tank, an ink holder which can hold an ink, a pen tip, an ink guiding part for guiding the ink in the ink tank to the pen tip and an ink occlusion body which can feed the ink to the ink guiding part and which has an outer skin, wherein through parts are provide in the outer skin of the ink occlusion body.
    Type: Grant
    Filed: June 26, 2002
    Date of Patent: May 29, 2007
    Assignee: Mitsubishi Pencil Kabushiki Kaisha
    Inventors: Kazuhiko Furukawa, Yojiro Sano
  • Patent number: 7063475
    Abstract: An ink reservoir for a Writing instrument molded from a gas barrier resin such as polyvinyl alcohol, an ethylene vinyl alcohol copolymer resin, polyacrylonitrile, polyamide, a cellulose resin, polyester, polycarbonate and polystyrene, wherein a vapor-scarcely permeable coating layer having a vapor permeability (P1) of 0.5 g/m2* atm*24hr/25 ?m or less at 40° and 90% RH is formed on the above reservoir for a writing instrument. In this ink reservoir for a writing instrument, a gas barrier property is not reduced under the environment of high moisture even if a wall of the ink reservoir is relatively thin and a resin having an excellent transparency is used, and releasing of pressurized air in the ink reservoir and falling of the tip member are not caused.
    Type: Grant
    Filed: August 28, 2002
    Date of Patent: June 20, 2006
    Assignee: Mitsubishi Pencil Kabushiki Kaisha
    Inventors: Kazuhisa Kirita, Toshimi Kamitani, Takao Koyama
  • Patent number: 7056052
    Abstract: In order to provide an ink reservoir for a writing instrument which has satisfactory permeation resistance and moisture-absorption resistance against permeation of a solvent and absorption of moisture and which is excellent in a storing property of the ink with the passage of time, an ink reservoir for a writing instrument in which an ink for a writing instrument is stored is constituted of at least one selected from the group consisting of a cyclic olefin resin, a fluorine base resin and a high molecular weight olefin resin or the ink reservoir for a writing instrument described above is constituted of a laminated structure which is formed by extrusion molding of two or more kinds of thermoplastic resins.
    Type: Grant
    Filed: May 1, 2003
    Date of Patent: June 6, 2006
    Assignee: Mitsubishi Pencil Co., Ltd.
    Inventors: Shuji Ichikawa, Kazuhiko Furukawa, Takeshi Kobayashi
  • Patent number: 7037019
    Abstract: An ink-storing member for a writing instrument which can inhibit deterioration in the ink caused by permeation of oxygen and nitrogen contained in air, inhibit leaking of the ink and generation of bubbles, enhance discharge stability of the ink, improve fragrance retention of a perfume-containing ink, prevent inferior writing brought about by reduction in an internal pressure of an ink-storing vessel in a pressure type writing instrument and prevent deterioration in the ink due to vaporization of moisture of a water-based ink and deterioration in the ink caused y moisture absorption in an oil-based ink. Such ink-storing member includes, for example, an ink-storing member for a writing instrument which is constituted of a multilayer structure having an organic high molecular compound layer constituted of an organic high molecular compound an inorganic compound layer constituted of an inorganic compound.
    Type: Grant
    Filed: November 24, 2003
    Date of Patent: May 2, 2006
    Assignee: Mitsubishi Pencil Co., Ltd.
    Inventors: Masaru Miyamoto, Kenji Sato
  • Patent number: 7004659
    Abstract: A method and apparatus for dispensing solution on toilet paper includes a container. A pump assembly is adapted for selectively pumping a fluid outwardly out of the container. An actuator panel is attached to a top side of the pump assembly. A fluid receiving housing includes a lower wall, an upper wall and a resiliently collapsible perimeter wall. The upper wall has a plurality of holes extending therethrough. The actuator panel is positioned within the housing and the pump extends downwardly through the bottom wall. The upper wall may be selectively positioned toward the lower wall to actuate the pump such that fluid may be drawn outwardly of the container and into the housing. A coupler attaches the housing to the container. Toilet paper may be positioned on an outer surface of the upper wall such that fluid expelled through the holes is positioned on the toilet paper.
    Type: Grant
    Filed: November 12, 2003
    Date of Patent: February 28, 2006
    Inventor: Avery Goodman
  • Publication number: 20040265041
    Abstract: Provided is an ink-storing member for a writing instrument which can inhibit deterioration in the ink itself caused by permeation of oxygen and nitrogen contained in air, inhibit leaking of the ink and generation of bubbles, enhance discharge stability of the ink, improve fragrance retention of a perfume-containing ink, prevent inferior writing brought about by reduction in an internal pressure of an ink-storing vessel in a pressure type writing instrument and prevent deterioration in the ink due to vaporization of moisture of a water-based ink and deterioration in the ink caused by moisture absorption in an oil-based ink.
    Type: Application
    Filed: November 24, 2003
    Publication date: December 30, 2004
    Applicant: Mitsubishi Pencil Co., Ltd.
    Inventors: Masaru Miyamoto, Kenji Sato
  • Publication number: 20040228673
    Abstract: Provided is an ink reservoir for a writing instrument molded from a gas barriering resin such as polyvinyl alcohol, an ethylene*vinyl alcohol copolymer resin, polyacrylonitrile, polyamide, a cellulose resin, polyester, polycarbonate and polystyrene, wherein a vapor-scarcely permeable coating layer having a vapor permeability (P1) of 0.5 g/m2*atm*24 hr/25 &mgr;m or less at 40° and 90% RH is formed on the above reservoir for a writing instrument.
    Type: Application
    Filed: February 26, 2004
    Publication date: November 18, 2004
    Inventors: Kazuhisa Kirita, Toshimi Kamitani, Takao Koyama
  • Publication number: 20040131415
    Abstract: Provided is a writing instrument comprising an ink tank, an ink holder which can hold an ink, a pen tip, an ink guiding part for guiding the ink in the ink tank to the pen tip and an ink occlusion body which can feed the ink to the ink guiding part and which has an outer skin, wherein through parts are provide in the outer skin of the ink occlusion body.
    Type: Application
    Filed: December 16, 2003
    Publication date: July 8, 2004
    Inventors: Kazuhiko Furukawa, Yojiro Sano
  • Patent number: 6742952
    Abstract: A writing medium reservoir that exhibits clear drain of a writing medium, and preferably in which the writing medium is readily visible to the user. A method of making a writing medium reservoir that exhibits clear drain of a writing medium, and preferably in which the writing medium is readily visible to the user. The method may include forming the writing medium reservoir by co-extruding an inner layer and an outer layer. In addition, the present invention relates to a multi-layer tubular structure that exhibits clear drain of a liquid, and preferably in which the relative presence or relative absence of liquid is readily visible to the user.
    Type: Grant
    Filed: February 28, 2003
    Date of Patent: June 1, 2004
    Assignee: BIC Corporation
    Inventors: Qingping Chen, Michael T. Nowak
  • Publication number: 20040028463
    Abstract: A writing instrument ink cartridge is described. Preferred is a coil or wave shaped cartridge in various colors and configurations.
    Type: Application
    Filed: August 8, 2002
    Publication date: February 12, 2004
    Inventors: Jennifer Michelle Weaver, Kenneth Wayne Long
  • Publication number: 20040013462
    Abstract: A mechanism for automatically adjusting the chamber length in a writing instrument to accommodate refills of different lengths. The mechanism comprises a first element and a second element operably engaged with the first element. When contacted by a refill, the second element automatically moves from a first position associated with a first chamber length to a second position associated with a second chamber length. The mechanism may have a biasing member to releasably hold the second element in the first position. In one embodiment, the automatically-adjusting refill seat mechanism has a third element that fits in the second element, and is operably and movably engaged with the first and second elements. When contacted by a refill, the third element automatically moves from a first position associated with a first chamber length to a second position associated with a second chamber length.
    Type: Application
    Filed: July 17, 2002
    Publication date: January 22, 2004
    Inventor: Ryan S. Eddington
  • Publication number: 20030156887
    Abstract: A mechanism for a writing implement prevents back flow of writing fluid from a writing tip back to a fluid reservoir of the implement. The mechanism has a valve chamber with a proximal end and a distal end. The mechanism also has a valve seat disposed at the distal end of the valve chamber. A first fluid passage in the writing implement defines a first opening into the valve chamber at the valve seat. The first fluid passage is in fluid communication with both the fluid reservoir and the valve chamber. A valve body has a body diameter and is loosely held within the valve chamber. The valve body prevents fluid back flow from the valve chamber to the first fluid passage when borne against the valve seat. A second fluid passage in the writing implement is in fluid communication with both the writing tip and the valve chamber. The second fluid passage has a second opening disposed at the proximal end of the valve chamber.
    Type: Application
    Filed: February 19, 2002
    Publication date: August 21, 2003
    Inventors: Jason E. Cantu, Bret R. Marschand
  • Pen
    Patent number: 6599047
    Abstract: A pen includes a reservoir tube holding a reservoir tube and a writing tip at one end for writing, a barrel fastened to one end of the reservoir tube remote from the writing tip by a connector to hold a barrel, a top cap capped on the barrel and adapted to hold a spare writing tip, a spring holder fixedly provided inside the barrel to hold a spring holder, and a movable stopper supported on a spring at the spring holder and adapted to open an air passage hole between the atmosphere and the inside space of the reservoir tube subject to the level of ink in the reservoir tube.
    Type: Grant
    Filed: November 1, 2002
    Date of Patent: July 29, 2003
    Inventor: Wen-Shiung Lin
  • Publication number: 20030118393
    Abstract: The present invention provides a pen which includes a marking device, the pen being operative to mark a visible path onto a surface, the marking device being electronically controllable to change an attribute of the path, the pen including a user interface whereby a user may modify the attribute, the pen including at least one sensing device for sensing images or colors or both.
    Type: Application
    Filed: December 4, 2002
    Publication date: June 26, 2003
    Inventors: Paul Lapstun, Kia Silverbrook, Tobin Allen King
  • Publication number: 20030118394
    Abstract: A cartridge for a pen has an electronically controllable marking device, such as an ink jet printhead, for marking a visible path on a surface, a non marking stylus nib that in use contacts the surface with the marking device directed toward or contacting the surface The cartridge includes an on/off switch that turns the marking device on and off. Movement of the stylus nib or application of more than a predetermined compressive force to the stylus nib turns on the on/off switch and so causes the marking device to be turned on, so marking a path on the surface.
    Type: Application
    Filed: December 4, 2002
    Publication date: June 26, 2003
    Inventors: Tobin Allen King, Kia Silverbrook
  • Publication number: 20030113155
    Abstract: A writing instrument is provided having an elongated shell having a longitudinal axis and an elongated assembly having a writing tip disposed at a first end of the elongated assembly. The elongated assembly is disposed at least partially in the elongated shell. The elongated assembly moves relative to the elongated shell between first and second positions along the longitudinal axis, a surface of the elongated assembly abutting a surface of the elongated shell with the elongated assembly in the first position and the surface of the elongated assembly spaced from the surface of the elongated shell with the elongated assembly in the second position. The writing instrument also includes a flexible bushing having a first end and a second end. The first end of the flexible bushing is secured to the elongated shell and the second end of the flexible bushing secured to the elongated assembly. The flexible bushing biases the elongated assembly toward the second position.
    Type: Application
    Filed: October 30, 2002
    Publication date: June 19, 2003
    Inventors: William Dowst, Vitaly Pesikov, Andrew Szczepanowski, Neville E. Andrews, Jim Salemme
  • Publication number: 20020181997
    Abstract: In a writing implement having a feeder core for feeding ink in an ink tank to a pen tip and an ink collector in which a plurality of comb-tooth like elements formed with an air-liquid exchange groove are arranged at intervals in a feeder core axial direction, an ink holding plate is provided so as to face a rear end face of the ink collector in such a manner as to form a gap for holding the ink in the ink tank by means of the capillary phenomenon between the ink holding plate and the rear end face, and also a plurality of air exchange grooves for flowing and discharging ink of an amount responding to a change in pressure in the ink tank into and from grooves between the comb-tooth like elements are formed between an outer edge portion of the comb-tooth like element and a feeder core contact portion.
    Type: Application
    Filed: May 28, 2002
    Publication date: December 5, 2002
    Inventor: Yoshiomi Konose
  • Publication number: 20020081142
    Abstract: A free-ink type writing instrument having a temporary ink collector having a sectionally combed configuration, between an ink tank chamber and an writing tip and inside the front barrel, wherein all or part of the gaps between neighboring combed teeth for retaining ink in the temporary ink collector are set equal to 0.15 mm or smaller, and the ink tank is charged with an ink having a surface tension equal to 30 mN/m or lower at 25° C.
    Type: Application
    Filed: December 11, 2001
    Publication date: June 27, 2002
    Inventors: Takao Koyama, Kazuhisa Kirita, Atsushi Iwasa
  • Patent number: 6409408
    Abstract: Provided is a free ink type writing instrument having an ink tank part for storing an ink, in which an amount of the ink can visually be observed. The free ink type writing instrument is characterized by that the whole or a part of an internal surface part in contact with the ink in the ink tank part has a smaller critical surface tension than a surface tension of the ink, and a contact angle between the ink and the whole or a part of the internal surface part in contact with the ink in the ink tank part is 30° or more at a temperature of 25° C.
    Type: Grant
    Filed: January 26, 2001
    Date of Patent: June 25, 2002
    Assignee: Mitsubishi Pencil Kabushiki Kaisha
    Inventor: Takao Koyama
  • Patent number: 6354756
    Abstract: An ink reservoir which can allow a visual color to display a blue color without coloring the ink reservoir with a specific colorant. It is an ink reservoir for a ball point pen, in which fine particles for scattering light are contained in a resin composing the ink reservoir for a ball point pen and which makes it possible to transmit light.
    Type: Grant
    Filed: November 22, 2000
    Date of Patent: March 12, 2002
    Assignee: Mitsubishi Pencil Kabushiki Kaisha
    Inventor: Masaaki Morita
  • Publication number: 20020018690
    Abstract: A writing instrument has an accurate operation and simple structure in a mechanism for controlling ink supply by air enclosed in an ink passage, and a method of producing the same. The ink is blocked by the air enclosed in a blocking chamber (11), the blocking chamber communicates with an ink holding passage (18) and has a porous relay body (15) inserted therein, an ink storing portion (17) is formed in a base portion of the relay body, the ink in the ink holding passage (18) descends and contacts the relay body (15) as the ink in the ink storing portion is consumed, and thereby is transferred to the ink storing portion, and the air is prevented from being absorbed into the porous relay body (15).
    Type: Application
    Filed: May 24, 2001
    Publication date: February 14, 2002
    Inventor: Jiro Hori
  • Publication number: 20010053307
    Abstract: A handwriting instrument consists of a top part (1) and a connected intermediate part (2), on the end of which a tip (3) is fastened. To make it possible to insert the intermediate part (2) into the top part (1) rapidly and securely during the assembly of the handwriting instrument, there are two detent elements (5) and two lead-in bevels (8) on the top part (1), which guide two flexible studs (4) into the detent elements (5), where the studs (4) are locked. A sleeve (11) fastened to the intermediate part (2) by means of a bayonet connection (13, 21; 12, 14, 20) covers the studs (4) and the detent elements (5). For easy handling of the writing instrument, there is a grip (18) made of non-slip but soft rubber on the intermediate part (2).
    Type: Application
    Filed: May 30, 2001
    Publication date: December 20, 2001
    Inventor: Michael Rigoni
  • Publication number: 20010053308
    Abstract: An application liquid reservoir (collector) that is made to achieve an object of the invention is the application liquid reservoir which reserves the application liquid in the vicinity of an application liquid guide that is interposed between an application liquid cartridge and an applicator. Said application liquid reservoir is comprised of a cylinder having an inner hole to receive an ink guide and fin means projecting from the said cylinder. Said fin means includes a plurality of fins that stand parallel to axial direction of the inner hole at predetermined intervals, said annular application liquid reserving slots being defined between said respective adjacent two fins such that said application liquid reserving slot are set to be narrower in part.
    Type: Application
    Filed: June 6, 2001
    Publication date: December 20, 2001
    Applicant: Mitsubishi Pencil Co., Ltd.
    Inventors: Sakae Hayao, Kazuhiko Furukawa
  • Patent number: 6287035
    Abstract: Pressure generating gas-releasing compositions which are microcmulsions, siloxane or hydrocarbon greases or elastomers, are used to aid dispensation of a fluid from a reservoir without the composition itself being dispensed. Dispensers containing such compositions can include writing implements.
    Type: Grant
    Filed: January 11, 2000
    Date of Patent: September 11, 2001
    Assignee: Berol Corporation
    Inventors: Brian Edward Causton, Dawn Elizabeth Ann Gough
  • Publication number: 20010016142
    Abstract: Provided is a free ink type writing instrument having an ink tank part for storing an ink, in which an amount of the ink can visually be observed. The free ink type writing instrument is characterized by that the whole or a part of an internal surface part in contact with the ink in the ink tank part has a smaller critical surface tension than a surface tension of the ink, and a contact angle between the ink and the whole or a part of the internal surface part in contact with the ink in the ink tank part is 30° or more at a temperature of 25° C.
    Type: Application
    Filed: January 26, 2001
    Publication date: August 23, 2001
    Applicant: Mitsubishi Pencil Kabushiki Kaisha
    Inventor: Takao Koyama
  • Patent number: 6267523
    Abstract: An ink pen refill consists of a single writing point connected to an elongated barrel in which gel ink is stored in distinctly colored layers. At the proximal end of the barrel, just behind the most proximal color band of ink, a quantity of grease is inserted in the barrel to seal the ink within the barrel. In manufacturing the ink pen refill, after installing the elongated barrel on the proximal end of the writing point, a quantity of gel ink of a first particular color is inserted within the barrel just proximal of the writing point using a filling pipe. When the desired quantity of ink has been so inserted, the elongated barrel with the writing point is placed in a centrifuge and is centrifuged to remove any air bubbles contained within the ink. Next, the next color of gel ink is dispensed into the barrel just proximal of the first layer of ink. The entire refill is again centrifuged to remove any bubbles from the newest layer of ink.
    Type: Grant
    Filed: August 4, 2000
    Date of Patent: July 31, 2001
    Assignee: Raymond Geddes & Company, Inc.
    Inventors: Edward John Poels, Sin-Hwa Huang
  • Publication number: 20010004429
    Abstract: A direct-feed type writing implement includes: a point assembly having a writing point at the tip thereof; an ink tank directly storing a relatively low viscosity ink having a viscosity of 2 to 100 mPa.S at room temperature; an ink collector made up of a multiple number of vanes for adjusting the internal pressure of the ink tank by utilizing capillarity; a feeder including a center core, for feeding ink from the ink tank to the writing point; an ink absorber connected to the center core as the ink feeder; and a duct pipe connecting the ink collector and the ink tank; and preferably, ink is supplied to the center core as the ink feeder only through the ink absorber and the duct pipe.
    Type: Application
    Filed: December 15, 2000
    Publication date: June 21, 2001
    Applicant: Mitsubishi Pencil Kabushiki Kaisha
    Inventors: Yosuke Mito, Kazuhiko Furukawa
  • Publication number: 20010004430
    Abstract: A direct-feed type writing implement includes: a point assembly having a writing point at the tip thereof; an ink tank directly storing a relatively low viscosity ink having a viscosity of 2 to 100 mPa·S at room temperature; an ink collector for adjusting the internal pressure in the ink tank by utilizing capillarity; a feeder means including a center core, for feeding ink from the ink tank to the writing point; a duct pipe connecting the ink collector and the ink tank; and a duct pipe ink storage portion provided for the duct pipe; and preferably, ink is supplied to the center core as the ink feeder means only through the duct pipe.
    Type: Application
    Filed: December 15, 2000
    Publication date: June 21, 2001
    Applicant: Mitsubishi Pencil Kabushiki Kaisha
    Inventors: Yosuke Mito, Kazuhiko Furukawa
  • Patent number: 6203228
    Abstract: A writing implement comprising a dispensing device for writing liquid at the front end of the implement and a liquid reservoir for holding the writing liquid which is at least partly transparent at the rear end of the instrument, the improvement comprising the liquid reservoir is coated on the inside surface, at least in part, with a silicone rubber layer which allows the writing liquid to run off the inside surface.
    Type: Grant
    Filed: July 7, 2000
    Date of Patent: March 20, 2001
    Assignee: Schwan-Stabilo Schwanhausser GmbH & Co.
    Inventor: Manfred Schweizer
  • Patent number: 5775828
    Abstract: A writing implement of the present invention is capable of stably feeding ink to the tip of a writing member so that the writing member is able to draw lines in a fixed width and in a fixed ink density. The writing member is formed by superposing thin strips so as to form an ink passage of the shape of a minute gap therebetween. The ink is fed to the tip of the writing member by capillarity of the ink passage. Thus, the ink can be always stably fed to the tip of the writing member regardless of changes of the environment.
    Type: Grant
    Filed: December 4, 1995
    Date of Patent: July 7, 1998
    Assignee: Kabushiki Kaisha Pilot
    Inventor: Yasuo Ikeda
  • Patent number: 5399041
    Abstract: An writing instrument having an elongated tubular body formed from a thin sheet of material being rolled upon itself. A marking substance positioned within a bore of the body is prevented from leaking through the body by the application of a coating to at least one side of the sheet so that a lining is formed in the bore.
    Type: Grant
    Filed: December 3, 1993
    Date of Patent: March 21, 1995
    Assignee: BIC Corporation
    Inventor: Edgar B. Chiswell
  • Patent number: 4545819
    Abstract: An implement for writing on an absorbent or porous surface as provided, said implement including a writing or marking tip and said implement containing a writing medium, wherein said writing medium comprises an ink composition including:a first colorant,a second colorant anda vehicle,said first colorant being dispersed throughout said vehicle and having a particle size sufficiently large so as to substantially not permeate or be absorbed into said writing surface andsaid second colorant being dispersed or dissolved throughout said vehicle and being capable of substantially permeating or being absorbed into said writing surface and diffusing into the area on said surface proximate to said writing,whereby writing applied by said implement to said surface includes an inner portion of said first colorant bordered by substantial outer portions formed by said second colorant.
    Type: Grant
    Filed: July 31, 1984
    Date of Patent: October 8, 1985
    Assignee: Sakupa Color Products Corp.
    Inventors: Keiko Shioi, Yukito Shoji
  • Patent number: 4386867
    Abstract: A pen nib construction comprising a pen nib and a holder in which the pen nib is fitted. The pen nib is constructed by a plurality of pen nib pieces fixed back-to-back to each other and forming an ink channel extending axially, and the pen nib is provided at its pointed end with long splits and relatively short recesses which are disposed alternately and at equal angular distances. The pen nib contains an ink-containing portion near its pointed end. One end of the holder is divided into a plurality of ink feed tongues which are in contact with the outer surface of the pen nib. The other end of the holder is connected to an ink reservoir of the pen. At least one of the pen nib pieces is provided on its intermediate portion with another split which connects the ink channel with outside of the pen nib. Thus, ink is supplied from the ink reservoir to the pointed end of the pen nib through a plurality of passages including the ink channel and the narrow gap between the pen nib and the ink feed tongues.
    Type: Grant
    Filed: March 24, 1981
    Date of Patent: June 7, 1983
    Inventor: Shizuo Yamanaka