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.

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.

Abstract: A writing implement. A tubular outer shell (11) is provided outside a grip member (10), an inner shell (12) made of a soft material is provided entirely inside the outer shell (11), and the inner shell (12) is covered with the moderately hard outer shell (11). Thus, while the inner shell (12) inside can allow the user to feel the fit, the outer shell (11) outside prevents the inner shell (12) from getting damaged or worn even if the inner shell (12) is soft, so as to fully secure durability of the grip member (10). Since a thin part (11A) of the outer shell (11) is sufficiently thin on a swell (13), the excellent fit can be given to the user even if the outer shell (11) is formed of a hard elastic material to fully secure the durability of the grip member (10).

Abstract: A nib of a writing instrument is made of a carbon-resin mixture obtained by mixing a plastic material with carbon fiber. An ink feed core is provided with a nib cover. The nib cover is disposed on an outer periphery of the ink feed core between the nib and the ink feed core. The nib cover is configured to closely adhere at least to an inner periphery of the nib at the tip of the nib. A space defined between the nib and the ink feed core is filled up with the nib cover. The nib is made of a carbon-resin mixture obtained by mixing a plastic material with carbon fiber. With this configuration, a nib having high wear resistance can be obtained and duration of the nib and the writing instrument can be prolonged.

Abstract: The present invention provides a joining member for connecting an ink accommodating member and a ballpoint pen tip provided in a ballpoint pen, the joining member comprising, as a constituent material, a resin comprising a copolymer of polyethylene terephthalate and polyethylene naphthalate. By this means, it is possible to provide a joining member for a ballpoint pen having, in particular, both sufficiently excellent transparency and gas barrier properties.

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.

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.

Abstract: A casing for a writing instrument comprises an outer shaft, an inner shaft, and a nib. The outer shaft is formed using dual injection molding. An outer surface of the outer shaft includes a raised hard part and a raised soft part. The inner shaft is formed of a thin-wall tube having an upper end and a lower end, the inner shaft being configured for insertion inside the outer shaft. The inner shaft further includes a fastener protruding on its upper end that engages an upper end of the outer shaft. The nib is configured to engage the lower end of the inner shaft to help secure the inner shaft within the outer shaft. The raised hard or soft parts on the outer surface of the outer shaft may include an oblique loop-shaped part, a strip-shaped part, and/or an arc-shaped part.

Abstract: An ecological friendly disposable pen includes a main housing, a plug, a cap, an ink reservoir set within the main housing, and a nib sub-assembly. The nib sub-assembly may include a nib, which provides the writing end of the pen, and a wick, which carries ink from the reservoir to the nib. The plug plugs one end of the main housing, and the nib sub-assembly is set within the other end of the main housing. The ink reservoir stores a non-toxic ink. The plug, cap, ink reservoir and main housing are all formed from biodegradable, non-toxic materials.

Abstract: A dry-erase ink is disclosed for writing or marking on glossy and non-porous surfaces, in particular whiteboards or dry-erase boards, which ink is wipeable or erasable after drying without leaving visible colored residues. The ink contains a solvent, one or more dye(s) soluble in the solvent, a film forming resin such as polyvinylpyrrolidone or a derivative thereof, a strongly-alkaline substance such as a diamine and/or a quaternary organic ammonium hydroxide, an organic acid or a salt thereof and, if desired, a nonvolatile, liquid component serving as a release agent.

Abstract: The ink compositions comprise at least one solvent, at least one colorant, and at east one oil, and may be delivered from any of a variety of writing instruments including but not limited to ball pens, fountain pens, felt tip pens, and markers.

Abstract: A pen includes a housing, and an ink reservoir to be received in the housing. The ink reservoir includes a cartridge received in the housing and for receiving ink, a barrel attaching to front of the cartridge, and a nib attached to the barrel, for extending out through the front opening of the housing. The provision of the barrel between the cartridge and the nib allows the ink reservoir to be accommodated into various housings of different lengths and of different structures. The barrel includes a peripheral rib extended from a peripheral swelling for engaging with a spring member which may bias the barrel against the housing.

Abstract: A writing instrument ink cartridge is described. Preferred is a coil or wave shaped cartridge in various colors and configurations.

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.

Abstract: A highly durable conical nib is provided which also realizes a significant improvement in a nib productivity and a significant cost reduction. The conical nib comprises: a plurality of separated combtooth pieces being able to converge progressively toward front ends thereof and combine to form a virtually conical shape and that the front ends thereof combine to form a virtually spherical shape; a holding member capable of arranging the combtooth pieces along a circumference; and a converging member capable of converging these combtooth pieces; wherein the plurality of separated combtooth pieces are assembled by the holding member and the converging member, both separate from the combtooth pieces, into a conical nib having a writing tip at the front end thereof and an ink feeding path between each combtooth piece.

Abstract: The present disclosure provides a method of pressurizing enclosures having bi-stable valves. The valve has an invertible element having a port therethrough, and is converted from an open mode into a closed mode by a sudden change of pressure across the valve. The method is particularly suited for pressurization of enclosures en masse.

Abstract: Applicator devices for depositing a fluid sample onto a substrate, as well as methods for their use, are provided. The subject devices are elongate in shape and have a first end and a second end. The first end has a planar surface of substantially circular shape with a conical protuberance arising therefrom. The second end may have a means for attaching to an automated movement means. In using the subject devices, the first end is dipped into a fluid sample and then contacted with the surface of a substrate in a manner sufficient to deposit a fluid sample onto the substrate surface. The subject devices and methods find use in a variety of different applications, particularly in the preparation of biopolymeric arrays.

Abstract: The present disclosure provides for a bi-stable valve especially useful for pressurizing pen refills. Pen refills so equipped may be inflated en masse in a pressure chamber, with a sudden drop in chamber pressure causing the bi-stable element to move from a valve open to a valve closed position.

Abstract: A refillable reservoir, particularly an ink converter for a fountain pen, has a cylinder in which a piston is slidable, and an actuating device for displacing the piston for refilling the ink chamber. Without needing to be detached from the piston, the actuating device can be stored substantially within the length of the chamber. The actuating device can be a rod which is disengageable from and slidable through the piston. Alternatively the actuating device can be a flexible ribbon coupled to a sleeve slidably mounted on the cylinder.

Abstract: A penpoint has a base portion and a plurality of comb-tooth pieces and a converging member fitted over the portion of the penpoint body between the base portion and the comb-tooth pieces. The uniform pressure of the converging member converges the comb-tooth pieces front ends into an undistorted hemispheric writing portion having ink passages between the adjoining comb-tooth pieces. When the penpoint is pressed against paper with the pen axis inclined, the front ends of the comb-tooth pieces shift and elastically deform to expand the outer diameter of the hemispheric portion. When pressure is relieved it returns to its original hemispherical shape. The thickness of strokes varies according to writing pressure. The penpoint can write in any direction.

Abstract: A conical penpoint is disclosed which resiliently deflects at its end by the pressure of writing to allow the thickness of written lines to be varied easily. The conical penpoint comprises: a penpoint body having a cylindrical base portion and a conical portion formed of a plurality of comb-tooth pieces continuous to and extending forwardly from the base portion; and an ink supply core installed inside the penpoint body and extending longitudinally therein. The front ends of the comb-tooth pieces are joined together so that the front ends of the adjacent comb-tooth pieces are in resilient contact with each other. When the apex portion formed by the joined front ends of the comb-tooth pieces is pressed against paper with its axis at an angle with respect to the paper, the penpoint elastically deforms allowing the thickness of written lines to be varied.

Abstract: A method for making a mottled and patterned pen barrel is disclosed, wherein a tube is preformed to have two ends and an intermediate portion, At least one mold cavity is provided in a mold for forming the pen barrel. A pair of positioning members are sleeved respectively around two ends of the tube, and the positioning members are positioned in the mold cavity so as to center the tube in the mold cavity and so as to create, in the mold cavity, a molding space surrounding an entire peripheral surface of the intermediate portion. A liquid coating composition is poured into the molding space to form a cover integral with the entire peripheral surface of the intermediate portion. Finally, the covered tube is removed from the mold cavity and the positioning members are removed from the covered tube.

Abstract: An integrated feather ink pen enables one to enjoy all of the benefits of the historic form of writing without the disadvantages. A shaped grip provides a comfortable means of operating the pen. A feather is attached to the grip to provide balance and a reservoir for ink or a compartment for an ink cartridge. The grip, together with an ink transport mechanism, serve to bind the nib to the feather. The ink transport mechanism is an ink feeder tube or a fibrous filament. Alternatively, the nib is dipped in ink.

Abstract: A method for making tubular members, each of which is coated with a decorative layer that has a randomly distributed chip pattern, includes the steps of: (A) preparing tube products, each of which having two ends and an intermediate portion between the two ends; (B) preparing a mold having a plurality of mold cavities; (C) sleeving detachably a pair of positioning members around the two ends of each of the tube products for enclosing and centering the two ends, and placing each of the tube products and the positioning members associated therewith in a respective one of the mold cavities; (D) forming a covering around the intermediate portion of each of the tube products by filling each of the mold cavities with a coating composition containing chips; (E) removing each of the covered tube products and the positioning members associated therewith from the mold, and detaching the positioning members from each of the covered tube products; and (F) machining and polishing the covered tube products, and cutting off

Abstract: A cartridge refill pen is provided with a cartridge refill cavity which allows a cartridge to be laterally loaded into the pan. The cavity is opened and closed on relative rotational movement of interconnected generally tubular parts of the pen.

Abstract: A washing liquid cartridge removably positionable in a writing instrument of the type having a removable ink container. The washing liquid container contains therein a washing liquid and has an engagement portion at one end removably engagable with an inner element of the writing instrument and an openable seal adjacent to the engagement portion. When the seal of the cartridge is opened and the cartridge is snugly fitted in position within the writing instrument in place of the ink container, the washing liquid in the cartridge flows and washes the ink passage within the writing instrument.

Abstract: A pen point for writing with an ink, having a pen nib with two nib points separated by a slit. The surfaces of the nib points perpendicular to the slit have, over a part of their length, a film chemically inert to the ink and wettable thereby, thus forming two lips which substantially cover the slit and abut with one another when the nib is in an unflexed state. The lips extend substantially from the slit origin to the nib tips and consist of a varnish, a plastic material or a metal. The pen point is manufactured by a process wherein a pen nib having two nib points and a slit therebetween is coated with a continuous film of material, chemically inert to the ink and wettable thereby, with the film then being divided to form the two lips.

Abstract: A writing instrument is described, which includes a writing assembly, a holder for an ink reservoir joined to the writing assembly, a removable barrel secured by rotation to the holder, and a removable cap which, in the closed position, fits over and protects the writing assembly. The cap and writing assembly are rotatably integrated in both rotational directions when the cap is in the closed position, so that removal of the barrel is effected simply by rotating the barrel relative to the cap without it being necessary to remove the cap and hold the writing assembly in the hand.

Abstract: A fountain pen in which ink is supplied to the tip of the pen under the control of a motor-actuated ink delivery device. An ink holder is formed covering the slit formation region of the pen tip to form an ink pool between the holder and pen tip. A detector is provided in the ink pool for detecting the quantity of ink therein at any time. A pen holder coupled to the pen tip includes an ink storing section opening into the ink pool, an ink delivery device coupled to the ink storing section for delivering ink under pressure, and an electrical power source and a power delivery circuit for controlling the flow of current to an operating motor.