Abstract: A compensation membrane and a pen or the equivalent including a compensation membrane. The compensation membrane being configured for compensating a pressure difference between the outside and the inside of a free ink reservoir of a pen or the equivalent. The membrane including a first portion having a first rigidity and a second portion having a second rigidity, the first rigidity being less than the second rigidity.

Abstract: A dispelling pen including a pen case and a pen head connected with the pen case, wherein at least one accommodation cavity for storing a dispelling solution is disposed in the pen case. The accommodation cavity is connected with the pen head via a pipeline. A switch control valve is disposed on the pipeline. The dispelling pen need not frequently dip in the dispelling solution, thereby avoiding fragmentation and circuit scratch due to the dispelling pen's repeated contact with the substrate while increasing convenience significantly, and increasing the security of the substrate at the time of dispelling.

Abstract: When the rear axial cylinder (3) is rotated, the cam cylinder (17) is also rotated, thereby the cam protrusion (18a) moves forward by means of the functions of the cam groove (17a) and the slit (18b), so that the slider (18) moves forward to cause the writing body (14) to move forward against a biasing force by the biasing member (15). The cam cylinder (17) and the rear axial cylinder (3) are fixed via the adjustment mechanism of rotational positions (17n).

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.

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 writing implement may include a housing with an operating side and a writing side, a nib assembly longitudinally axially displaceably arranged in the housing with an ink reservoir and a piston longitudinally axially adjustably arranged therein, and an operating element, arranged on the operating side, which is rotatable and longitudinally axially displaceable into a first operating position and a second operating position. The operating element is mechanically connected to the nib assembly in the first operating position for the longitudinal axial displacement of the nib assembly and mechanically connected to the piston in the second operating position for the longitudinal axial adjustment of the piston.

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 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.

Abstract: A writing pen with ink storage is provided, including a writing nib, an ink storage compartment for storing ink, an ink inducing device for inducing ink into the writing nib, wherein the writing pen further includes an air pressure balancing plug which is plugged in an open end of the ink storage compartment to seal ink, and a breathable core having nanopores, the breathable core being inserted into the air pressure balancing plug with one end extending into ink and the other end communicating with ambient air. The writing pen with ink storage of the present patent application has simple structure, provides fluent writing and no ink leakage.

Abstract: A writing instrument, which has an inner and outer writing element with separate writing medium reservoirs. The writing elements are coaxially mounted in an outer barrel and axially moveable with respect to one another. A driving mechanism may be actuated to allow a user to selectively extend one writing element. The inner and outer writing elements may have an inner sleeve therebetween to improve, for instance, rigidity of the outer writing element and to prevent contamination of the writing medium reservoirs. An outer sleeve may also be provided over the outer writing element. The outer sleeve can function to hold various components of the outer writing element together, and to allow for clean and easy refill of the outer writing element, especially when the outer writing element is a nib-type writing element with a filler-type reservoir. The writing instrument is designed so that a user can replace the inner and/or outer writing elements when their respective writing medium have been expended.

Abstract: A fountain pen for traditionally writing Jewish scriptures on parchment and prolonging the time between refilling of a calamus tip is provided. The fountain pen includes a configured calamus tip. An ink loader feeds ink to the calamus tip. A reservoir stores the ink and a piston creates a customable pressure inside said reservoir. An ink collector accepts ink from the reservoir. An ink flow attenuator attenuates the ink flow that flows through the ink loader, and a hollow barrel having an open front and rear ends for housing the piston, ink loader, calamus and reservoir.

Abstract: A dosing device for demand-dosing a liquid includes a primary container, a point of release for releasing the liquid, a main liquid channel between the primary container and the point of release and a vented secondary container, wherein the secondary container is coupled to the main liquid channel at a branch point, wherein the secondary container and the main liquid channel are designed such that the main liquid channel preferably fills with the liquid before the secondary container. The dosing device further includes a liquid valve between the primary container and the branch point, a sensor for measuring the filling level in the secondary container and finally means for opening the valve responsive to a predetermined filling level in the secondary container.

Abstract: An ink cartridge (1) for a reservoir pen has a body (2) which encloses an ink-chamber (3) that is initially sealed near the front end of the cartridge by a closure formed by a plug (4). The plug (4) sealingly engages in an axial bore (5) which is open to the front end of the cartridge and is slidably mounted in the cartridge body (2) so as to be moved rearwardly by engagement with a peg (34) upon insertion of the cartridge (1) into a pen, thereby allowing ink flow from the ink chamber (3) through the bore (5) and to a writing tip (23) of a nib (22) of the pen. The peg (34) is sized so as to form a seal with the inner surface of the bore (3) when fully inserted thereinto.

Abstract: A writing implement includes a cylindrical shaft member, a pen tip member which is fixed to one end of the shaft member and from which colored ink seeps out, liquid for ink which is stored in the shaft member and which comprises a major component of the colored ink seeping out from an end of the pen tip member, colorant to be added to the liquid for ink, and a valve member for isolating the colorant from the liquid for ink. In the writing implement, at least a part of a cylindrical side surface of the shaft member corresponding to a part where the liquid for ink is stored is formed to be transparent, the valve member is positioned between the storing part of the liquid for ink and the colorant, and the storing part of the liquid for ink is provided with a pressure-regulating part.

Abstract: A reservoir pen includes a nib, a feed bar defining an ink channel and having an ink port, and a valve for controlling flow of ink from the ink port to an underside of the nib. The valve includes a seat, a valve member, and a resilient element engaging the valve member to bias the valve member away from the ink port toward an open position. The valve member is further positioned to engage the nib to urge the valve member against the resilient element and into sealing contact with the seat. The resilient member is disposed outside of the ink channel in at least the open position.

Abstract: A writing instrument adapted, responsive to a pressure axially applied to a pen core, to supply ink in an ink chamber to the pen core, and includes a valve seat disposed between the ink chamber and the pen core, a valve body operable to be selectively moved between a close position where the valve body is in contact with the valve seat to isolate the pen core from the ink chamber and an open position where the valve body is spaced apart from the valve seat to communicate the pen core with the ink chamber, a pressing spring for biasing the valve body toward the front end of a pen shaft, and a support member for supporting the valve body and the pressing spring to allow the valve body to be moved in the axial direction. The support member includes a communication channel for communicating the inner space thereof with the ink chamber.

Abstract: The object of the present invention is to provide a cartridge type applicator which can prevent the application liquid from flowing back from the applying portion into the cartridge and which is suitable for use with a high viscosity application liquid. This applicator includes an advancing mechanism or piston mechanism made up of a sealing plug disposed inside a cylindrical cartridge tank for constituting the rear end wall of the tank, and a rod member attached to the sealing plug for causing the sealing plug to move in the axial direction of the tank; and an actuator (actuating member) for causing the rod member to move or advance in the axial direction by rotation thereof, and is constructed such that, when the actuator is turned, the rod member causes the sealing plug to move in the axial direction so as to reduce the volume of the space inside the tank.

Abstract: An ink cartridge (1) for a reservoir pen has a body (2) which encloses an ink-chamber (3) that is initially sealed near the front end of the cartridge by a closure formed by a plug (4). The plug (4) sealingly engages in an axial bore (5) which is open to the front end of the cartridge and is slidably mounted in the cartridge body (2) so as to be moved reawardly by engagement with a peg (34) upon insertion of the cartridge (1) into a pen, thereby allowing ink flow from the ink chamber (3) through the bore (5) and to a writing tip (23) of a nib (22) of the pen. The peg (34) is sized so as to form a seal with the inner surface of the bore (5) when fully inserted thereinto.

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.

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).

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).

Abstract: In a free-ink type low-viscosity water-based ball point pen, the low viscosity water based ink 17 contains 40% or more of water as a main solvent and has a viscosity of 1.5 cps to 60 cps at a normal temperature. A collector 6 has a slender, slit-like ink groove 16 and an air vent groove 14. In a zone covering from a collector air-venting portion 15 to an outside air with which the collector air-venting portion 15 is communicated the collector 6 has a mouth piece 5 having provided therein the thin and elongate air vent groove 14. The maximum amount of ink stored in the collector 6 is made 15% or more of the capacity of an ink tank 9. The ink tank 9 is made detachable and has its main body formed of transparent or semi-transparent synthetic resin, the main body therefore enabling a residual amount of ink 17 to be visually recognizable from outside.

Abstract: A marking insturment having a fluid reservoir (1) and an application tip. A valve (7, 12, 18) controls flow of fluid from the reservoir (1) to the tip. A transfer chamber (21) is located between the reservoir and tip and is assocaited with the reserovir housing (1) in said manner as to be reduceable in volume.

Abstract: Ink and a follower advancing with consumption of the ink are stored directly in the inside of a barrel having a pen point at its forward end. An outer tail plug constituted by a closed-end cylinder is fitted to a rear outer surface of the barrel. An air course is formed between the rear outer surface of the barrel and an inner surface of the outer tail plug to communicate with the inside of the barrel through a rear end aperture portion of the barrel. At least one air hole is provided ahead of the rear end aperture portion of the barrel to make the air course communicate with the outside air.

Abstract: A writing instrument has a supply chamber connected to reserve chamber by a refilling valve actuated by a plunger which is controlled by a push button formed with a self-closing membrane type valve through which the reserve chamber can be filled from a receptacle by a hollow needle. A separating valve at the end of the plunger closes before the refilling valve is opened to ensure that no ink under pressure will be forced into the ink flow regulator and point of the instrument during the refilling process.

Abstract: A reservoir pen includes a valve operated by the pen nib (4) to allow ink to pass to the nib, the ink flow rate being controlled by a flow restricting device (8) located between a primary ink reservoir chamber (2) enclosed within the pen barrel (1) and a secondary ink reservoir chamber (6) of much smaller capacity from which an ink channel (10) leads to the valve. The device (8) is a length of an extruded rod of microporous plastics. The nib is pressed towards the feed bar (3) by one spring element (21) and the valve member (12) which cooperates with a seat defined by the feed bar is urged to its closed position by another spring element (28). The rear end of the primary ink chamber (2) is closed by a grease plug comprising a mass of grease and a skeletal reinforcing frame.

Abstract: A tool for applying a liquid to a predetermined portion is disclosed. The tool has a main ink reservoir and a sub-ink reservoir. The sub-ink reservoir communicates with a pen body. The main ink reservoir communicates with the sub-ink reservoir through a valve mechanism. When ink inside the sub-ink reservoir is depleted upon writing, and a pressure inside the sub-ink reservoir is reduced, the valve mechanism is opened.

Abstract: The housing (1') of a writing point (1) or tracing element for manual ink writing or drawing instruments or for plotter or similar automatic or mechanical tracing machines is or can be linked with a shaft (40) that contains the ink and/works as a holder and/or storage. The housing has also a compensating system and a writing body (1") and if necessary other parts. It is provided with a supply system having in the area of the housing (1') several annular spaces (52 and 57) arranged axially one after the other and having different capillarities, their capillarity increasing one or more times in the direction of the writing body (1"). At least one annular space is conically shaped (53) and has a capillarity different from that of the writing body (1"), increasing in the direction of the latter.

Abstract: Novel, improved aqueous based, shock resistant, shear-thinning ink compositions and writing instruments including the ink compositions. The ink compositions comprise a substantially uniform dispersion of colorant(s), a water dispersible polymeric shear-thinning material and a substantially water insoluble polymeric material in a polar solvent system.

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 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.