Abstract: A performance data processing section that receives performance data generated by a manufacturing site system; a performance data storage section that stores received performance data; a master data storage section that stores master data that has data to be basic information when the performance data is managed; a business data generation section that generates business data by processing the performance data into a structure used by a business application based on data to be the basic information in the master data; and a business data storage section that stores the business data are included, in which the master data includes an attribute that represents start of an effective period of data to be the basic information and an attribute that represents end of the effective period.

Abstract: An electromagnetic reciprocating fluid device in which a movable member is equipped with permanent magnets, resists a torque rotating the movable member about an axis thereof in the reciprocating direction. The electromagnetic reciprocating fluid device has a pair of electromagnets facing each other, and permanent magnets disposed in a space between the opposed electromagnets and held by a movable member. When an alternating current is applied to coils formed in the electromagnets, a magnetic force is generated between the electromagnets and the permanent magnets, whereby a driving force for reciprocation is applied to the movable member. One end of the movable member is connected to a piston of a first piston-cylinder assembly, while the other end is connected to a piston of a second piston-cylinder assembly.

Abstract: An electromagnetic reciprocating fluid device in which a movable member is equipped with permanent magnets, resists a torque rotating the movable member about an axis thereof in the reciprocating direction. The electromagnetic reciprocating fluid device has a pair of electromagnets facing each other, and permanent magnets disposed in a space between the opposed electromagnets and held by a movable member. When an alternating current is applied to coils formed in the electromagnets, a magnetic force is generated between the electromagnets and the permanent magnets, whereby a driving force for reciprocation is applied to the movable member. One end of the movable member is connected to a piston of a first piston-cylinder assembly, while the other end is connected to a piston of a second piston-cylinder assembly.

Abstract: An electromagnetic reciprocating fluid device in which a movable member is equipped with permanent magnets, resists a torque rotating the movable member about an axis thereof in the reciprocating direction. The electromagnetic reciprocating fluid device has a pair of electromagnets facing each other, and permanent magnets disposed in a space between the opposed electromagnets and held by a movable member. When an alternating current is applied to coils formed in the electromagnets, a magnetic force is generated between the electromagnets and the permanent magnets, whereby a driving force for reciprocation is applied to the movable member. One end of the movable member is connected to a piston of a first piston-cylinder assembly, while the other end is connected to a piston of a second piston-cylinder assembly.

Abstract: A magnetic armature is attracted and driven by a magnetic force which is intermittently generated between magnetic poles, and a piston reciprocated by being pushed back by a coil spring is not rotated by the coil spring. When the magnetic armature (28) as attracted between the magnetic pole members (10,12) by the magnetic force comes to a predetermined rotational angle position about the axis, the armature receives a rotational torque that is derived from the magnetic force and acts in a direction opposite to that of the rotational torque applied by a coil spring (30), thereby preventing the armature from being rotated in the predetermined direction. More specifically, the armature (28) has a circular cross-section as a whole and has a chamfered part (28?) parallel to the axis. When the chamfered part enters between the magnetic pole members, the armature receives a rotational torque that is derived from the magnetic force.

Abstract: It is an object of the present invention, in an electromagnetic reciprocating fluid device in which a movable member is equipped with permanent magnets, to resist a torque rotating the movable member about an axis thereof in the reciprocating direction. The electromagnetic reciprocating fluid device has a pair of electromagnets 28, 28? facing each other, and permanent magnets 26, 26? disposed in a space between the opposed electromagnets and held by a movable member 27. When an alternating current is applied to coils 34 formed in the electromagnets, a magnetic force is generated between the electromagnets and the permanent magnets, whereby a driving force for reciprocation is applied to the movable member. One end of the movable member is connected to a piston 18 of a first piston-cylinder assembly 12, while the other end is connected to a piston 18? of a second piston-cylinder assembly 12?.

Abstract: A magnetic armature is attracted and driven by a magnetic force which is intermittently generated between magnetic poles, and a piston reciprocated by being pushed back by a coil spring is not rotated by the coil spring. When the magnetic armature (28) as attracted between the magnetic pole members (10,12) by the magnetic force comes to a predetermined rotational angle position about the axis, the armature receives a rotational torque that is derived from the magnetic force and acts in a direction opposite to that of the rotational torque applied by a coil spring (30), thereby preventing the armature from being rotated in the predetermined direction. More specifically, the armature (28) has a circular cross-section as a whole and has a chamfered part (28?) parallel to the axis. When the chamfered part enters between the magnetic pole members, the armature receives a rotational torque that is derived from the magnetic force.

Abstract: A first power plug for inserting in a wall outlet and a tapping table consisting of more than one outlet for accepting power plugs of slave units are connected by an electric cord, a switch is provided in the cord, the switch is ON/OFF controlled by a switch control means which detects through a second power plug connected with a service outlet of a master electronic equipment power voltage provided in parallel with power voltage to be supplied to the master electronic equipment; the switch control means controls whether to provide slave units connected with outlets of the tapping table with power supply voltage when the master electronic equipment is energized.

Abstract: A piston slidably inserted in the cylinder of a gas pump, said cylinder having a cylinder head and an outlet valve located near the cylinder head. The piston comprises a cylindrical piston body and a wear-reducing sheet wound one time around the piston body. The opposing edges of the wear-reducing sheet are cut stepwise, such that at least two gaps are formed between the edges, which are set apart from each other for a predetermined distance in the circumferential direction of the piston body, and such that no gap portion is formed between the edges, which connects the two gaps and extends substantially in the circumferential direction of the piston body.

Abstract: A free piston to be slidably inserted in the cylinder of an electromagnetic reciprocating compressor. The piston has a partition wall dividing the inner space of the cylinder into chambers, and a rod connected to the partition wall. The partition wall has an air hole. A valve member is attached to the front surface of the partition wall, and usually closes the air hole of the partition wall. The rod extends rearwardly from the rear-end surface of the partition wall. The rod has a substantially conical hole which extends rearwardly from the front-end surface of the partition wall. The piston further comprises a retainer cap closing the opening of the substantially conical hole and holding the valve member in an openable condition.

Abstract: A cabinet having a loudspeaker window has a mesh screen structure covering the window. This mesh screen structure is made by the use of a plastics molding technique and comprises a plurality of latitudinal threads and a plurality of longitudinal threads molded together to give a shape or appearance similar in all aspects to a woven metal mesh.

Abstract: An improved printed circuit board for use in electrical and electronic appliances includes an electronic part for a jumper having crossover wiring and disposed on an electrically insulative substrate or base plate for the printed circuit board provided with a cross pattern of conductors in which sets of separated or cut-off conductive layers are arranged to confront each other on X-Y cross coordinates for connecting the cross pattern portions on the substrate to each other by the jumper electronic part.

Abstract: A printed circuit board which is an electrically insulative substrate of synthetic resin having at least one pair of spaced electroconductive layers. An electric and/or electronic component, such as resistor or capacitor, of a type which has no lead wires extending outwardly therefrom for external electric connection, but which is constituted by a substantially cubic body having its opposed area applied with respective films or foils of electroconductive material which serve as terminal electrodes, is mounted on the substrate with the terminal electrodes soldered to the respective electroconductive layers. To this end, each of the electroconductive layers has a round portion for connection with the associated terminal electrode of the component. Each round portion has an effective surface area equal to or smaller than any of the terminal electrodes.

Abstract: A component container for use in accommodating electric and/or electronic components, such as resistors, capacitors or semi-conductor elements, of a type having no lead wire outwardly extending therefrom, which comprises a casing having a plurality of elongated storage chambers defined therein and extending in parallel relation to each other in a common plane. Each of the storage chambers has a first end opening on one side surface of the casing and a second end opposite to the first end and opening on the other side surface of the casing opposed to the one side surface. The component container further comprises separate barrier members each for providing removably an obstruction to a group of the first or second open ends of the storage chambers to substantially close them with the components accommodated within the storage chambers in respective rows.