Abstract: A tail plug to be attached to a tail end of a shaft part of a writing instrument includes an inner plug that is fitted into the shaft part and an outer plug that is coupled with the inner plug. The inner plug has a first opening through which a fluid can flow in an axial direction of the shaft part; the outer plug has a second opening through which a fluid can flow in the axial direction of the shaft part, and at least one of the first opening and the second opening are configured to be closed when the outer plug and the inner plug are coupled with each other.

Abstract: A device for applying or removing nail polish or nail art has a replaceable cartridge with a distal end removably coupleable to a proximal end of a handle. The cartridge has a reservoir that contains a liquid, such as nail polish or nail polish remover and a flow control member (e.g., valve) actuatable to allow flow of the liquid out of the distal end of the cartridge. The handle has a flow path therethrough that extends between its proximal end to an applicator implement (e.g., brush, sponge) attached to its distal end, the flow path in fluid communication with the flow control member when the cartridge is coupled to the handle. Selective actuation of the flow control member by the user (e.g., by squeezing the cartridge) allows fluid to flow out the reservoir and through the flow path in the handle to the applicator implement for application of the fluid by the user to a finger or toe nail.

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: A writing instrument of the present invention has an ink chamber 2 formed inside a main body 1 of the writing instrument, a writing element 5 provided on a front end portion of the main body 1 of the writing instrument, a reservoir chamber 10 which is formed between the ink chamber 2 and the writing element 5 and communicates with the atmosphere and with the writing element 5, a plurality of walls 14 and 14a which partitions the reservoir chamber 10 and the ink chamber 2 and further partitions the ink chamber 10 into a plurality of small chambers in the axis direction, and an ink supply member 16 which penetrates the plurality of walls and supplies ink from the ink chamber 2 to the writing element 5, where each of the walls is provided with a communication hole 15 capable of holding the ink by capillary force, and these communication holes are sealed with an ink membrane.

Abstract: A free-ink collector type writing implement includes ink (12) having a low viscosity of 2 to 100 mPa S, a collector (6) having both an internal pressure regulating function and an ink guiding feed, and a thin reservoir (1) having an ink holding capability connected with the ink guiding feed is accommodated in an ink tank (7), wherein the volumes of the reservoir (1), the ink tank (7) and the collector (6) are set to have an optimum relationship. Furthermore, the ink tank (7) is separated into two parts by a ring (13).

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 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. In another embodiment, ink is supplied to the center core as the ink feeder only through the duct pipe.

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.

Abstract: The fountain-pen comprises a large capacity reserve reservoir (3) for the ink, with a piston type valve (14) that can be operated to fill the pen by suction, and a smaller supply reservoir (10) which is adjacent to the nib (5) and supplies ink to it; the piston type valve (14) is provided in order to hermetically close and open the passage between said reserve reservoir (3) and the supply reservoir (10) so as to transfer ink from said reserve reservoir (3) to said supply reservoir (10) and shut off said supply reservoir (10) from the reserve reservoir (3).

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 liquid-depositing implement includes a tubular case (1) containing a supply chamber (2) and a reservoir (3) isolated from the chamber with both the chamber and reservoir being fillable with a deposition liquid. A depositing element (6) can be mounted to the case (1) and connected to the supply chamber (2). The supply chamber includes a valve-system (4) composed of two mutually telescoping and displaceable bushes (9, 10) resting tightly against each other and enclosing a cell (16) bounded at each of its axial ends by at least one base (14, 15) affixed to the inner or outer bush. Two sets of cooperating valve apertures (17, 18; 19, 20) are present in such manner in the walls of the bushes (9, 10) that by rotating one bush (10) relative to the other bush (9), first one set of valve apertures (19, 20) passes from a communicating position to a sealed position and thereupon the other set of valve apertures (17, 18) passes from the sealed position into the communicating position.

Abstract: A writing instrument has an ink reservoir, a nib and a feeder which temporarily stores ink which is pushed out of or pulled into the ink reservoir. The ink reservoir communicates with the nib through an ink supplying passage. The feeder chamber communicates with the atmosphere through an atmosphere communicating passage and with the ink reservoir through a capillary flow passage. The cross-sectional area of the capillary flow passage is small enough to hold ink in the capillary flow passage due to a surface tension of the ink. When the pressure in the ink reservoir due to a temperature change, etc., ink flows in the feeder chamber through the capillary flow passage or is returned from the feeder chamber to the ink reservoir. Since the feeder chamber is hollow, its volume is large and has a simple structure, the feeder can be manufactured easily. A low flow resistance of the capillary flow passage provides good response for compensation for a pressure change.

Abstract: A refillable pen having a writing reservoir for supplying a writing tip with ink and an additional supply reservoir for refilling the writing reservoir by operating a first valve. The additional supply reservoir is refilled from outside of the pen through a second valve by an accompanying refill container. The accompanying refill container has an injection needle with a valve and a wall of the refill container forms bellows for increasing the pressure on the liquid inside the refill container.

Abstract: A device for applying writing, drawing, printing and painting fluids onto a surface is provided. The device comprises a fluid container, a respective applicating tip, an air inlet tube that connects an interior of the fluid container to the surrounding atmosphere, and a capillary fluid reservoir. The capillary fluid reservoir is arranged within a fluid conveying connection between the fluid that is contained in the fluid container and the applicating tip whereby the fluid conveying connection is interrupted when the applicating tip is pointed in a downward direction.

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 barrel, and a hollow cup-shape insert in the front end thereof, forming a capillary space between itself and the barrel. The insert has a closed front end, the tip portions of the insert and the barrel form a ball seat in which the writing ball is positioned, and the capillary space leads to the ball. The rear end of the insert is open and communicates with the main space in the rear portion of the barrel. A flexible bag is positioned in the rear of the barrel, for filling through a filler tube which constantly vents the interior. The main space in the rear portion of the barrel and that in the insert together form a single continuous space, substantially without internal obstruction. The ink is in the form of a main body of fluid, freely flowing, aqueous ink. When the pen is laid on its side, the body of ink communicates with the capillary space, filling it by capillarity action, and that ink feeds by capillary action to the ball.

Abstract: A supply system is provided for a device that operates with capillary forces and is used to apply liquids. The system includes receptacles that accommodate the liquid and are closed off relative to the atmosphere. Also provided is an application element that communicates with the receptacles via a feed mechanism and serves for the application of the liquid, for which purpose the application element has a discharge. Each of the receptacles is provided with an inlet and an outlet, with the receptacles being interconnected in the manner of a series connection by having the outlet of one receptacle communicate with the inlet of another receptacle. The capillarity of the inlets and outlets is greater than the capillarity of the receptacles in the vicinity of the inlets and outlets thereof, and is less than the capillarity of the discharge of the application element.

Abstract: A leakproof fountain pen with a ballbearing tip includes an upper casing threadedly engaged to an ink flow guide. An ink reservoir has an open end received by an annular base of the ink flow guide. The upper casing combines with the ink flow guide to form a chamber for collecting ink which may flow from the ink reservoir. The ink flow guide further comprises an axial vent hole communicated with the atmosphere; an axial ink hole to serve as a path for ink flowing to and from the chamber and the ink reservoir; and an axial control hole having a flow portion with a bigger diameter. A gravity post is movably disposed inside the flow portion and can block the passage of ink between the ink reservoir and the control hole. A plug unit acts as a support for the gravity post. A first end of the ink flow guide is substantially V-shaped with the lowest point at the opening of the ink hole to direct the collected ink from the chamber towards the ink hole when the pen is held upright.

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: An ink supply system for writing instruments which operate with liquid ink. The writing instrument has a large-volume ink reservoir which communicates via a recharge valve with a small-volume ink reservoir which is adjacent to the writing element. The transmission of ink from the large-volume ink reservoir to the secondary reservoir is controlled by a sensor as a function of the quantity of ink which is present in the secondary ink reservoir. In order to simplify the recharging of the ink, and to be able to operate with the least possible electrical energy, the present invention utilizes as a recharge valve a tube pump which is rotatably driven by an electric motor and also can generate the pressure necessary to convey the ink to the secondary ink reservoir.

Abstract: A combination writing instrument comprising a plurality of nib devices detachably mounted at the front of pen holder, all of the nib devices being mounted in a head-to-tail connection with a uniform ink flow system to induce a constant and uniform ink flow from an ink reservoir to the front-most writing point for immediate and smooth writing, so that the user can select one of the nib devices to perform a desired writing purpose and enjoy a variety of writing modes.

Abstract: A ball-point writing instrument in which dislodging of the rotating ball as a result of accidental droppage on a hard surface is prevented by employing an ink reservoir construction designed to prevent propagation of a travelling pressure step in the column of ink above the rotating ball.

Abstract: A writing instrument of an extremely simple structure in which stored ink previously extruded upon increase of the internal pressure of an ink chamber is subsequently sucked up by decrease of the internal pressure of the ink chamber and returned to the ink chamber, thereby preventing the outputting of ink drops in a downward orientation of pen, particularly when a large amount of ink is stored.

Abstract: A pen nib construction comprising a pen nib and a holder in which the pen nib is fitted. The pen nib is provided at its pointed end with long splits and short chinks 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 ink feed tongues which are in contact with the outer surface of the pen nib. At least one of the ink feed tongues is provided on its inner surface with a groove which continues at one end thereof to one of the splits and at the other end thereof to an ink reservoir of the pen. Thus, ink is supplied from the ink reservoir to the ink containing portion mainly or only through the groove and the split, in preference to or instead of through an ink channel which may or may not be provided in the center of the pen nib. From the ink containing portion, ink flows out through the chinks and the splits onto the paper.

Abstract: A ball point pen writing instrument capable of being simply filled in aqueous ink solution and fitted with a ball point pen to be used as an ordinary writing instrument. When the ink is exhausted it can be refilled for use in the same manner as an ordinary fountain pen.