Abstract: An improved scroll compressor comprises a fixed scroll and an orbiting scroll, as well as an Oldham's coupling which enables the orbiting scroll to have a orbital movement. The Oldham's ring of the Oldham's coupling is so formed that its sliding surfaces for counterpart members to slide thereon are formed by a base material containing silicon particles, while the surface of each silicon particle (remaining on the base material's surface serving as a slidable surface for counterpart members to slide thereon) is formed into a flat surface. In practice, a ratio of silicon portions formed into flat surfaces to an entire sliding area of the Oldham's coupling is in a range of 3% to 20%, preferably 5% to 15%. With the use of the scroll compressor of the present invention, it is possible to improve the wear resistance of the Oldham's ring of the Oldham's coupling and its counterpart members in the scroll compressor.

Abstract: This invention discloses a method and apparatus where a pre-treatment which reduce interfacial level density is carried out before thin film deposition on a substrate utilizing a catalytic gas phase reaction. The catalytic gas phase reaction is generated with a treatment gas which is supplied with the substrate via a thermal catalysis body provided near the substrate surface. Thin film deposition on the substrate surface is carried out after this pre-treatment. The thermal catalysis body is made of tungsten, molybdenum, tantalum, titanium or vanadium, and is heated by a heater. And, this invention also discloses a semiconductor device having a semiconductor-insulator junction with its interfacial level density is 1012 eV −1cm−2 or less, which is brought by the above pre-treatment in the insulator film deposition process.

Abstract: This invention discloses a method and apparatus where a pre-treatment which reduce interfacial level density is carried out before thin film deposition on a substrate utilizing a catalytic gas phase reaction. The catalytic gas phase reaction is generated with a treatment gas which is supplied with the substrate via a thermal catalysis body provided near the substrate surface. Thin film deposition on the substrate surface is carried out after this pre-treatment. The thermal catalysis body is made of tungsten, molybdenum, tantalum, titanium or vanadium, and is heated by a heater. And, this invention also discloses a semiconductor device having a semiconductor-insulator junction with its interfacial level density is 1012 eV−1 cm−2 or less, which is brought by the above pre-treatment in the insulator film deposition process.

Abstract: A scroll type fluid machine which can practically exhibit an appropriate meshing condition between an orbiting scroll member and an unorbiting scroll member and which can enhance the energy efficiency.

Abstract: In a film or panel having excellent near-infrared absorbability and excellent near-infrared shieldability, and having a high degree of visible ray transmittance and good color tone, in order to produce the near-infrared-absorbing film or panel having good color tone while the near-infrared-absorbing dye disposed therein is kept stable, the dye and the binder resin for the dye are specifically selected, and the production method is also specifically selected. In addition, for the purpose of producing the film or panel while the dye disposed therein is kept stable and for the purpose of making the film or panel have additional functions such as electromagnetic radiation absorbability, the film or panel is made to have a multi-layered structure.

Abstract: This invention discloses a method and apparatus where a pre-treatment which reduce interfacial level density is carried out before thin film deposition on a substrate utilizing a catalytic gas phase reaction. The catalytic gas phase reaction is generated with a treatment gas which is supplied with the substrate via a thermal catalysis body provided near the substrate surface. Thin film deposition on the substrate surface is carried out after this pre-treatment. The thermal catalysis body is made of tungsten, molybdenum, tantalum, titanium or vanadium, and is heated by a heater. And, this invention also discloses a semiconductor device having a semiconductor-insulator junction with its interfacial level density is 10.sup.12 eV .sup.-1 cm.sup.-2 or less, which is brought by the above pre-treatment in the insulator film deposition process.

Abstract: A polyester polymer includes a dicarboxylic acid or its ester-forming derivative and a dihydroxy compound, in which the dicarboxylic acid contains an alicyclic dicarboxylic acid and optionally an aromatic dicarboxylic acid, and the dihydroxy compound contains a compound of formula (1): ##STR1## wherein R.sub.1 represents a C.sub.1-4 alkylene group; and R.sub.2, R.sub.3, R.sub.4 and R.sub.5 each represents a hydrogen atom, a C.sub.1-4 alkyl group, an aryl group or an aralkyl group which may be the same or different. Also, polyester moldings of disc substrates, lenses, sheets, films, tubes or fibers are produced by molding the polyester polymer. The polyester polymer has excellent transparency, excellent heat resistance, extremely low optical anisotropy and excellent moldability.

Abstract: The present invention provides a head set capable of improving a sense of comfort when being put on, realizing an easier attaching and detaching operation, and minimizing a feeling of being tired even when used for a long time.The head set comprises, an auricle insertion type earphone (1) including, an auricle insertion section (4) covered by a cover (3), a casing (5) incorporating an acoustic converter and a cord (6), a supporting member (7) of a rod shape attached on a body (2) of the auricle insertion type earphone, and a microphone (8) arranged in a vicinity of a tip end of the supporting member (7). The microphone (8) is positioned adjacent to a person's mouth or adjacent to an upper portion of the person's cheek.

Abstract: An apparatus and a method for manufacturing cast parts by means of a lost wax process which is fully automated and unmanned. The wax tree coating processes, ranging from after a wax tree manufacturing step to immediately before a dewaxing step comprises a handling device for handling wax trees, a pair of slurry fluid dipping baths disposed with the handling device in between, a pair of sanding fluidized bed tanks disposed with the handling device in between, and a pair of conveyors for suspending and transferring the wax trees for not less than given drying time, wherein the handling device chucks the wax tree suspended and transferred by the conveyor at a given transfer position by means of a clamp unit of the handling device, moves the wax tree to the slurry fluid dipping bath and then to the sanding fluidized bed tank to coat the wax tree with a slurry fluid and sand, and returns the coated wax tree to the hanger conveyor again, with the sequence of operations automatically controlled by a controller.

Abstract: A closed type scroll compressor has a drive shaft supported by a frame through bearings lubricated with a lubricating oil supplied from an oil reservoir via a lubricating oil passage bore formed in the drive shaft. The end of the drive shaft in which the upstream end of the lubricating oil passage bore opens is connected to the oil reservoir through a joint tube which is supported by supporting structures including a combination of a spherical slide bearing and slide bearing and capable of taking up any mounting error or displacement of the drive shaft in any direction. The compressor can be assembled easily without any risk of uneven or local contact of each sliding portion.

Abstract: A scroll compressor apparatus comprising a closed scroll compressor, an oil reservoir vessel separate from the closed scroll compressor, a discharge pipe, and an oil supply pipe. The closed scroll compressor includes a closed container having a suction port through which a compression medium is suctioned, a scroll compression mechanism encased in the closed container, a motor encased in the closed container, a first oil supply passage extending through an end plate of a fixed scroll and through which a first opening facing a sliding contact portion with an orbiting scroll is communicated with an oil supply port, a second oil supply passage formed in an end plate of the orbiting scroll and through which the first opening is communicated with a second opening facing an end face of a driving shaft, and a third oil supply passage, formed in the driving shaft, through which the second opening is communicated with the third opening facing a bearing supporting the driving shaft.

Abstract: A scroll compressor has a scroll mechanism disposed in a closed container and driven by a motor through a crank shaft rotatably supported at two points by first and second bearings disposed adjacent the opposite ends of the motor. The bearing which is remote from the scroll mechanism comprises a sliding bearing. The first end of the crank shaft remote from the scroll mechanism has a peripheral surface disposed in sliding engagement with the sliding bearing and formed therein with a lubricant supply groove communicated with an axial lubricant supply hole formed in the crank shaft and having a closed end adjacent the first end of the crank shaft and opened in an end face of a crank pin section thereof. The sliding bearing is communicated with a lubricant reservoir formed by a lower part of the container. The lubricant in the reservoir is subjected to the pressure of a compressed fluid discharged from the scroll mechanism and is forcibly fed into the lubricant supply groove through the sliding bearing.

Abstract: A head actuator for a disc drive and storage system having a plurality of discs and a plurality of read/write heads positioned on upper and lower surfaces of the discs. The head actuator includes a plurality of load springs. Each load spring has a plurality of through holes located at its inner end. A head is mounted to the outer end of each load spring for positioning the head on the upper or lower surface of a disc. The head actuator further includes an integrally formed head arm assembly. The head arm assembly has a plurality of parallel head arms integrally formed at their inner ends to a main head arm body member and extended in parallel therefrom such that they can be positioned between corresponding discs of the disc drive and storage system. Each head arm is formed with a plurality of through holes in its outer end for alignment with a plurality of corresponding through holes formed in each head load spring at its inner end.

Abstract: A scroll compressor comprises an orbiting scroll and a fixed scroll, each of which has a wrap formed on an end plate in upstanding position. These orbiting and fixed scrolls are assembled together with the wraps facing inwardly to each other so as to define a plurality of spaces by the wraps and the end plates of both scrolls. These spaces move toward the center of both scrolls during the orbiting movement of the orbiting scroll so as to reduce the respective capacities of the spaces. Thus, compression of a fluid is carried out. This compressor also includes a motor for driving the orbiting scroll and a driving shaft for connecting the orbiting scroll and the motor. At the end of the driving shaft on the motor side, a first oil supply pump is provided with its suction port communicating to an oil sump of the compressor.

Abstract: A compressor unit composed of a fixed scroll and an orbiting scroll which are engaged with each other, and a variable speed motor are disposed in a hermetic chamber. A first bearing is provided in an engagement portion between a crankshaft and the orbiting scroll in an intermediate pressure chamber provided on a back surface of the orbiting scroll for applying thereto an intermediate pressure between a discharge pressure and a suction pressure. The crankshaft is supported by a second bearing provided close to the orbiting scroll and a third bearing provided close to the motor. The first, second and third bearings are lubricated by force of a differential pressure between the discharge pressure and the intermediate pressure through an oil passage. The oil passage is in communication at one end thereof with the lubricant oil on which the discharge pressure is applied, and opens at the other end thereof into the intermediate pressure chamber.

Abstract: An oil feeding system for a scroll compressor includes an enclosed vessel accommodating therein an electric motor disposed at an upper position and a scroll compressor section disposed at a lower section and adjacent to the motor. A suction pipe opens into the enclosed vessel for the purpose of maintaining a low-pressure atmosphere in the interior of the enclosed vessel. A gyratory shaft of a gyratory scroll engages with an eccentric hole formed in the end of the drive shaft, and a trochoid pump is disposed at the end of the gyratory shaft. A pump case has a portion below the pump, which is formed with a circular-arc large-volume suction port on one side thereof and a circular-arc discharge-side oil sump on the other side thereof.

Abstract: A hermetic scroll compressor comprising a compressor component and an electric motor arranged respectively in upper and lower portions of a closed housing. The compressor component includes fixed and orbiting scrolls in mesh with each other. A frame is fixedly connected to the fixed scroll and supports the orbiting scroll for orbiting motion, with at least one passage group of a plurality of vertically extending passages being provided at a peripheral surface of the frame for communicating a space above the compressor component with a space between the compressor component and the electric motor. One of th e passages has a higher fluid resistance than the remaining passages, with the passage having high fluid resistance being vertically aligned with a passage provided at the periphery of the electric motor for communicating the space above the electric motor with a lubricating oil reservoir below the electric motor.

Abstract: A scroll fluid machine comprising a pair of fixed and orbiting scrolls having their respective wraps in mesh with each other. A drive shaft engaging the orbiting scroll is connected to an electric motor and is supported by a frame. An end plate of the oribiting scroll is slidably held between the frame and an end plate of the fixed scroll. A first feed oil passage is formed in at least one of the end plate of the fixed scroll and the frame. The first passage has one end communicates with an oil reservoir defined at a bottom of the housing and the other end opening on a sliding surface contacting with the orbiting scroll. A second feed oil passage formed in the end plate of the orbiting scroll has one end always communicating with the other end of the first passage. The other end of the second passage is located in the vicinity of the axis of the orbiting scroll. A third feed oil passage formed in the drive shaft has one end communicating with the other end of the second passage.

Abstract: A multiphase solid-state contactor for controlling a principal circuit, comprising a plurality of thyristors connected in anti-parallel relation, and an electronic control circuit connected to the thyristors including a firing control circuit, an input circuit and a surge absorbing circuit. The input circuit may include a rectifier and voltage detector for compensating for variations in the operating voltage of the principal circuit. Each of the firing control circuit, the input circuit and the surge absorbing circuit may comprise separate printed circuit boards which may be mounted in stacked relation in a casing for ease of handling and repair. Auxiliary terminals are also provided for outputting an auxiliary output signal from the device.

Abstract: A scroll compressor is disclosed. A first main bearing and a second main bearing is coaxially formed on the sole frame but a balancer can be easily attached to a drive shaft by forming a space and an opening in the frame of the scroll compressor. The balancer is inserted through the opening formed in the periphery of the frame. One end of the drive shaft is inserted in the hole of the balancer and the first and second main bearings. The drive shaft and the balancer are fixed by suitable fixing means, so that the drive shaft is rotatably supported by the first and second main bearings, and the balancer can be rotated together with the drive shaft. Accordingly, since the frame of this invention has a single, integral frame structure, it is possible to coaxially form the first main bearing and the second main bearing, both of which are mounted on the frame.