Abstract: A ball-point pen having a coupling, a tip at the distal end of the coupling, and a reservoir tube at the proximal end of the coupling. The tip may held in a tip holder, which, in turn, is coupled to the distal end of the coupling. A valve chamber is formed within the coupling with a ball seat having a guide hole therethrough on the rear portion of the valve chamber and projecting ridges on the front portion of the valve chamber. When the ball-point pen is positioned with its tip upward, a ball valve is brought into contact with the ball seat to close the guide hole and thereby prevent back flow of ink. When the ball-point pen is positioned with its tip downward, the guide hole is opened and the ball valve contacts the rear ends of the projecting ridges, so that ink flows into the tip through the guide hole, the valve chamber, and grooves formed between the ridges. A spring may be interposed in the inner hole of the tip with its proximal end held in place by the coupling.

Abstract: A ball-point pen of the present invention is provided which includes: a ball-point pen refill being accommodated in the barrel cylinder and having: a tip with a tip ball held at the front end thereof; an ink reservoir which stores low-viscosity oily ink and has an ink follower provided in the rear end of the ink; and a joint disposed between the tip and the ink reservoir. The joint further includes: a valve chamber holding a ball valve in its inside and communicating with the rear end of the tip; and a ball valve seat disposed on the rear side of the valve chamber for the ball valve in order to prevent backward flow of ink. With this configuration, it is possible to provide a ball-point pen which, without need of any cap, can create dense writing traces free from blotting and unevenness even when a low viscosity oily ink is used.

Abstract: A composition for optical materials is herein disclosed which comprises the following two components (a) and (b):(a) a component containing at least one of poly isocyanates represented by the formula (1)A.paren open-st.S--B--NCO).sub.n (1)wherein A is an alkanediyl group or an alkanetetrayl group which may contain a sulfur atom, or a dithianetetrayl group, and the alkanediyl group or the alkanetetrayl group may be substituted by a phenyl group; B is a methylene chain represented by .paren open-st.CH.sub.2 .paren close-st..sub.m (m is an integer of 1 to 4) which may contain a sulfur atom, and B's may be the same or different; and n is an integer of 2 or 4, and(b) a component containing at least one of polythiols having two or more mercapto groups. The composition is useful to provide optical products such as plastic lenses, filters, substrates for recording media and optical fibers which have a very high refractive index and which are excellent in heat resistance.

Abstract: A multiplex writing implement includes a mechanical pencil refill and ball-point pen refill which can be selectively used as desired, and is equipped with a delivering mechanism for delivering a stick-shaped article such as an eraser etc. The multiplex writing implement further includes: a front barrel for accommodating at least tip portions of these refills; a middle barrel for accommodating the remaining parts of these refills; a rear barrel which is able to rotate clockwise or counterclockwise relative to the middle barrel; and a cylindrical cam which moves integrally with the rear barrel and, in accordance with the rotational direction of the rear barrel, allows selective use of one of the refills by projecting any one of the refills from the front end of the front barrel and retracting the other refill. In this configuration, the front and middle barrels are integrally joined in such a state that each barrel is prevented from rotating and falling off relative to the other barrel.

Abstract: A link configurator capable of freely forming a physical link configuration per node. This link configurator has a first selective switch logic group for selecting the termination or the relay of a first data stream on a near-end aggregate or tributary side, a second selective switch logic group for selecting the termination or the relay of a second data stream on a far-end connecting side to an adjacent node group, and a connecting group for connecting the first and the second selective switch logic groups. The first and second selective switch logic groups are set to have a terminating or relaying function by a selective control signal.

Abstract: Disclosed are lipid A analogs useful for the treatment of septic shock and LPS-mediated activation of viral infection.

Abstract: Disclosed are lipid A analogs useful for the treatment of septic shock and LPS-mediated activation of viral infection.

Abstract: A mercapto compound represented by the following formula (1): ##STR1## is obtained by reacting, in the presence of a mineral acid, thiourea with a compound represented by the following formula (2): ##STR2## wherein X means a hydroxyl group or a chlorine or bromine atom, and then adding a base to alkalinize the reaction mixture so that the reaction product is hydrolyzed.The mercapto compound represented by the formula (1) can be reacted with at least one cyanate compound selected from the group consisting of polyisocyanate compounds, polyisothiocyanate compounds and isocyanate-group-containing isothiocyanate compounds to form a sulfur- containing urethane resin. A lens made of the resin is colorless and transparent, has high refractive index and low dispersion characteristics, and is excellent especially in heat resistance.

Abstract: A multiplex writing implement comprises a plurality of writing elements, at least one which is a mechanical pencil writing element, which can be selectively projected and retracted from the front opening of the front barrel section by rotating a middle barrel section relative to the front barrel section. An eraser can be extended by rotation of a cap relative to the middle barrel section. The implement includes the following resin molded components, namely, a guide cylinder, front barrel section, cylindrical cam, middle barrel section, cap, and an eraser guide sleeve. The front half portion of the guide cylinder is fixed to the front barrel section and is attached rotatably in its rear half portion to the middle barrel section. The guide cylinder contains a plurality of writing elements fit in respective grooves and movable axially. The cylindrical cam is attached rotatably into the rear end of the guide cylinder, and is disposed in the middle barrel section, locked from relative turning.

Abstract: The present invention discloses a composition for high refractive index plastic lens consisting of a monomer mixture wherein a particular aliphatic thiol compound is added to a polyisocyanate represented by general formula (1): ##STR1## wherein each X represents a hydrogen atom or a methyl group; each R represents a chlorine atom, a bromine atom, a methyl group or an ethyl group; m represents an integer of 0-4; and n represents an integer of 2-4, and a polythiol of formula (2): ##STR2## and a high refractive index plastic lens made of a urethane-containing resin obtained by polymerizing said composition.

Abstract: A communication system containing a plurality of node elements. Each node element contains: a main communication unit containing a multiplexer/demultiplexer unit, a management control unit, a data input/output terminal unit, a switch unit, a connection mode control unit, and a link establishing unit. The connection mode control unit connects the data input/output terminal unit to either the management control unit in its own node element or another management control unit in another remote node element, by controlling the switch unit. The link establishing unit establishes a link for the data input/output terminal unit to access the management control unit in another remote node element through an overhead channel between the node elements.

Abstract: A mercapto compound represented by the following formula (1): ##STR1## is obtained by reacting, in the presence of a mineral acid, thiourea with a compound represented by the following formula (2): wherein X means a hydroxyl group or a chlorine or bromine atom, and then adding a base to alkalinize the reaction mixture so that the reaction product is hydrolyzed.The mercapto compound represented by the formula (1) can be reacted with at least one cyanate compound selected from the group consisting of polyisocyanate compounds, polyisothiocyanate compounds and isocyanate-group-containing isothiocyanate compounds to form a sulfur-containing urethane resin lens made of the resin is colorless and transparent, has high refractive index and low dispersion characteristics, and is excellent especially in heat resistance.

Abstract: A link changeover control system for a LAN of a broadcasting arrangement has one master supervisor node station and a plurality of normal node stations connected by an active LAN link path and spare LAN link paths. A pilot signal is inserted into a communication signal in the master supervisor node station and the pilot signal is detected in the normal node stations, whereby the active LAN link path is maintained to be used for communication. In the vent of the pilot signal becoming undetectable at least by one of the normal node stations, the master supervisor node station changes the link path used for communication from the acitve LAN link path to one of the spare LAN link paths and, at the same time, the normal node stations changes the link path used for communication from the active LAN link path to the spare LAN link path through which the pilot signal has become detectable.

Abstract: In a distributed transaction processing system of a two-phase commit scheme, a client sequentially requests all the servers to perform PHASE I processing. When all the servers complete the PHASE I processing, the client stores data indicating the completion of the processing. When an operation is restarted after a system down of a given server, the server inquires of the client whether all the servers have completed the PHASE I processing. If all the servers have completed the PHASE I processing, the server executes PHASE II processing. If not all the servers have completed the PHASE I processing, the server in which failures occur, causing abnormal system termination performs rollback processing, and the client requests other servers which have completed the PHASE I processing to perform rollback processing.

Abstract: A synchronous communication system includes a plurality of node elements and at least one two-way transmission line.

Abstract: 3-(3,5-di-tert-butyl-4-hydroxy-benzylidene)-2-pyrrolidone and N-substituted derivatives thereof are described. The substituent includes alkyl, alkoxy, alkynyl phenyl-alkylene, hydroxy-alkylene and amino-alkylene. They are effective as an anti-inflammatory, analgesic and antithermic agent, and they have a low toxicity.

Abstract: A cleaning blade and process for use in an image forming apparatus wherein the blade removes residual developer from a photosensitive member. The cleaning blade can be in close contact with the photosensitive member. The blade extends substantially at right angles to the direction in which the photosensitive member moves. It has a lubricant layer formed on both end portions in the longitudinal direction of the blade, which forms part of a surface contacting the photosensitive member.

Abstract: Non-steroidal, anti-inflammatory drugs are disclosed which are polyprenyl alcohol esters of indolyl lower carboxylic acids, phenyl lower carboxylic acids, acetyl salicyclic acid, anthranilic acid and derivatives thereof.

Abstract: An original transfer apparatus used in an image-forming apparatus for forming an image in accordance with image information from an original set on an original table, whereby the original is transferred to the original table, is provided with a housing which is removably attached to the image-forming apparatus. The housing contains therein a transfer mechanism for swallowing and transferring the original to the original table. A drive source for driving the transfer mechanism is integrally provided in the housing. Since the drive source is contained in the housing, the original transfer apparatus can be mounted on the image-forming apparatus with ease.

Abstract: Non-steroidal, anti-inflammatory drugs are disclosed which are polyprenyl alcohol esters of indolyl lower carboxylic acids, phenyl lower carboxylic acids, acetyl salicylic acid, anthranilic acid and derivatives thereof.