Abstract: The electromagnet includes a valve-opening side coil portion supplied with a current to thereby generate a first magnetic flux and generate electromagnetic force in a direction moving the valve-opening side moving element toward a valve-opening position, and a valve-closing side coil portion supplied with a current to thereby generate a second magnetic flux and generate electromagnetic force in a direction moving the valve-closing side moving element toward the valve-closing position. The valve-opening side coil portion and the valve-closing side coil portion are constituted of an identical connection. The electromagnet further has a sub-coil constituted of a separate connection from the valve-opening side coil portion and the valve-closing side coil portion. By the current supply to the sub-coil, a third magnetic flux reducing at least one of the first magnetic flux and the second magnetic flux is generated.

Abstract: An electromagnetically driven valve includes a driven valve having a stem extending in a prescribed direction and an umbrella-shaped portion provided at a tip end of the stem and opening/closing an intake/exhaust port, a lower disc and an upper disc having one ends coupled to the stem and the other ends supported by a disc support base so as to allow free oscillation of the disc respectively and oscillating around the other ends so as to cause the driven valve to carry out reciprocating motion in the prescribed direction, a lash adjuster provided in the stem, and a guide ring guiding the lash adjuster along the prescribed direction. The lash adjuster contracts and expands in the prescribed direction and accommodates displacement of the stem produced in a direction orthogonal to the prescribed direction as a result of reciprocating motion of the driven valve. With such a structure, the driven valve carries out smooth reciprocating motion.

Abstract: An electromagnetically driven valve is actuated by cooperation of electromagnetic force and elastic force. The electromagnetically driven valve includes a driven valve having a stem and carrying out reciprocating motion along a direction in which the stem extends, a lower disc and an upper disc spaced apart from each other and each having one end coupled to the stem so as to allow free oscillation of the disc and the other end supported by a disc base so as to allow free oscillation of the disc, and a lower spring and an upper spring provided at the other end of the lower disc and at the other end of the upper disc respectively and applying elastic force to the lower disc and the upper disc. With such a structure, an electromagnetically driven valve reduced in height and attaining excellent mounting characteristic can be provided.

Abstract: An electromagnetically driven valve includes: a valve, including a valve shaft, which reciprocates to and fro along a direction in which the valve shaft extends; a disk, which is a magnetic member, and which is connected to and drives the valve; a first electromagnet which attracts the disk and keeps it in a valve closed position; and a torsion bar, which is a first elastic member, and which applies, to the disk, a force to remove the disk from the first electromagnet. In this first electromagnet, when the disk has been attracted to the first electromagnet and is in the valve closed position, a magnetic gap is provided at least in a portion of at least one magnetic circuit constituted by the electromagnet core and the disk.

Abstract: An electromagnetically driven valve includes: a valve reciprocating to and fro along a direction in which the valve shaft extends; a disk connected to the valve; a first electromagnet including a first coil; a torsion bar, which is a first elastic member; and an ECU which controls the electromagnet force of the first electromagnet. This ECU controls electrical current so as, when weakening the electromagnetic force of the first electromagnet and separating the disk from the first electromagnet, to reduce the electrical current which flows in the first coil towards zero, after having temporarily increased it from a first holding current to a second holding current which is larger than the first holding current, and then, after the disk has separated from the first electromagnet, so as to flow a braking current for adjusting the speed of the disk.

Abstract: An electromagnetically driven valve includes a valve element that has a valve stem and moves in reciprocating motion in a direction in which the valve stem extends; a disc that is interlocked with the valve element at a driving end, extending to a pivoting end, from which a central axis extends and around which the disc oscillates; a coil that oscillates the disc; a power supply that supplies electric current to the coil; and an ECU that controls the flow of current from the power supply to the coil. During the initial period of operation of the disc, the ECU controls the current so that it is supplied from the power supply to the coil in cycles, and in accordance with the voltage and temperature, controls the number of current cycles, the cycle length, and the value of the current.

Abstract: An electromagnetically driven valve has a valve stem; a valve element which reciprocates in the direction in which the valve stem extends; a disc which extends from a driving end, which is operatively linked with the valve element, to a pivoting end, and pivots around the pivoting end; a valve opening coil and a valve closing coil which oscillate the disc; and a electric current supply portion which supplies electric current to the valve opening coil and the valve closing coil. The valve opening coil and the valve closing coil are serially connected. The reduced electric current, which in greater than 0, runs through the valve opening coil and the valve closing coil when moving the disc from one of the valve opening coil and the valve closing coil to the other.

Abstract: An electromagnetically driven valve includes a valve element, a main body, a disc, and a lower electromagnet. The valve element includes a valve stem, and is reciprocated in the direction in which the valve stem extends. The main body is provided at a position distant from the valve element. The disc includes a driving end that is moved in conjunction with the valve stem, and a pivoting end that is supported by the main body such that the pivoting end can be oscillated. The disc is oscillated around a central axis that extends at the pivoting end. The lower electromagnet is disposed so as to face the disc. The lower electromagnet includes a core made of magnetic material, and a coil wound in the core. The central axis is surrounded by a cylindrical bearing portion of the disc, which is made of magnetic material. The core has a cylindrical surface that faces the bearing portion.

Abstract: An electromagnetically driven valve that is driven by the combined action of electromagnetic force and elastic force includes first and second valve elements that have valve shafts and move in reciprocating motions in the directions in which the valve shafts extend. It also includes first and second oscillating members that extend from driving ends to pivoting ends, and that pivot around respective central axes extending at the respective pivoting ends. The driving ends are operatively linked with the first and second valve elements, respectively. The electromagnetically driven valve also includes first and second coils that cause the first and second oscillating members to oscillate. The first and second coils are interconnected.

Abstract: An electromagnetically driven valve that operates by a combination of electromagnetic force and elastic force includes a valve element that has a valve shaft and that reciprocates in directions of extension of the valve shaft, and first and second oscillating members that extend from driving ends to pivoting ends, and that pivot about central axes extending at the pivoting ends. The driving ends are operatively linked with the valve element. An electromagnet oscillates the first and second oscillating members. First and second measuring portions measure at least one of the oscillation angle, the amount of lift and the oscillating speed of the first and second oscillating members. A control portion computes energization control logics based on measurement values provided by the first and second measuring portions, and averages the energization control logics to control energization of the electromagnet.

Abstract: An electromagnetically driven valve includes a valve element, a main body, a disc, and a lower electromagnet. The valve element includes a valve stem, and is reciprocated in the direction in which the valve stem extends. The main body is provided at a position distant from the valve element. The disc includes a driving end that is moved in conjunction with the valve stem, and a pivoting end that is supported by the main body such that the pivoting end can be oscillated. The disc is oscillated around a central axis that extends at the pivoting end. The lower electromagnet is disposed so as to face the disc. The lower electromagnet includes a core made of magnetic material, and a coil wound in the core. The coil is offset to a driving end side with respect to a center of the core.

Abstract: An electromagnetically driven valve device is formed by attaching a lower core assy, an armature, an upper core assy, and an upper case in that order from bottom, to a cylinder head of an engine. Each of the lower core assy and the upper core assy is unitarily formed so as to have a predetermined shape by resin-molding a core and a coil that form an electromagnet as well as an armature bearing, etc. The lower core assy is fastened together with the upper core assy to the cylinder head, and is thus attached to the mounting surface.

Abstract: The electromagnet includes a valve-opening side coil portion supplied with a current to thereby generate a first magnetic flux and generate electromagnetic force in a direction moving the valve-opening side moving element toward a valve-opening position, and a valve-closing side coil portion supplied with a current to thereby generate a second magnetic flux and generate electromagnetic force in a direction moving the valve-closing side moving element toward the valve-closing position. The valve-opening side coil portion and the valve-closing side coil portion are constituted of an identical connection. The electromagnet further has a sub-coil constituted of a separate connection from the valve-opening side coil portion and the valve-closing side coil portion. By the current supply to the sub-coil, a third magnetic flux reducing at least one of the first magnetic flux and the second magnetic flux is generated.

Abstract: An electromagnetically driven value includes a valve element that has a valve stem and that reciprocates in a direction in which the valve stem extends; a disc that extends from a driving end, which is operatively linked with the valve stem, to a pivoting end, and that pivots around a central axis which extends along the pivoting end; and a nonmagnetic body that is arranged between the disc and the valve stem.

Abstract: An electromagnetically driven valve includes multiple valve elements that have respective valve shafts and reciprocate in a direction in which the valve shafts extend; a pivoting member that extends from a driving end, which is operatively linked with the valve shafts, to a pivoting end, and that pivots around a central axis which extends along the pivoting end; a support member that supports the valve elements; and a single push plate that drives the multiple valve elements when being pressed by the pivoting member.

Abstract: An electromagnetically driven valve device is formed by attaching a lower core assy, an armature, an upper core assy, and an upper case in that order from bottom, to a cylinder head of an engine. Each of the lower core assy and the upper core assy is unitarily formed so as to have a predetermined shape by resin-molding a core and a coil that form an electromagnet as well as an armature bearing, etc. The lower core assy is fastened together with the upper core assy to the cylinder head, and is thus attached to the mounting surface.

Abstract: This invention provides a compound of formula (I): or pharmaceutically acceptable salts thereof, wherein X1 and X2 are C or N, respectively; R1 and R2 are independently phenyl optionally substituted with a hydroxy group with proviso that X1 and X2 are not simultaneously C or N, when X1 is N, R1 is absent, and when X2 is N, R2 is absent; R3 is methyl or hydroxymethyl; R4 is formyl, hydroxymethyl or hydroxy C3-6 alkenyl; R5 is hydroxy, C3-6 alkenyl or hydroxy C3-6 alkenyl; or R4 and R5, together with the carbon atoms in the furopyridine ring to which they are attached, may form the following ring (to be fused with the furopyridine ring): with the proviso that when R3 is methyl and R5 is 2-buten-2-yl, X2 is not N. These compounds and pharmaceutical compositions containing such compounds are useful for treating infectious diseases caused by bacteria.

Abstract: A paving apparatus for rails for a guide rail type vehicle like a suspension type mono-rail in which drive wheels travel on left and right travelling paths and guide wheels travel along a pair of guide rails. The paving apparatus comprises a bogie bridged between a pair of guide rails and travelling along upper edges thereof and a base plate suspended adjustably in height with respect to the bogie, said base plate having a pair of pressing rollers supported on the base plate so as to oppose to respective left and right travelling road surfaces. A spot light from the base plate is irradiated on a marking tape indicative of an execution reference line provided on the guide rail to thereby adjust the height thereof.

Abstract: A paving arrangement for coating a base with a self-setting synthetic molding material comprises a rigid frame in the form of a shallow box having an open bottom. The frame is supported by a pair of sleigh members mounted on the lower portion of the frame in spaced relationship from each other so that the frame can be slid over the base. One of the sleigh members is shorter than the other and has its rear end terminating forwardly of the rear end of the longer sleigh member. A hopper is mounted on the frame for storing therein the molding material. A transversely elongate outlet opening is formed at the bottom of the hopper at a position rearwardly of the rear end of the shorter sleigh member and extending in the transverse direction between the inner edge of the longer sleigh member and an imaginary extension of the outer edge of the shorter sleigh member.