Abstract: A compressor compresses gas containing misted oil. The compressor has a drive plate located in a crank chamber and mounted on a drive shaft and a piston operably coupled to the drive plate and located in a cylinder bore. The drive plate converts rotation of the drive shaft to reciprocating movement of the piston in the cylinder bore to vary the capacity of the cylinder bore. The piston compresses gas supplied to the cylinder bore and discharges the compressed gas from the compressor by way of a discharge chamber and a discharge passage. An oil separating mechanism is disposed midway in the discharge passage to separate the oil from the gas flowing in the discharge passage. A storing chamber is defined in the lower portion of the separating mechanism to store the oil separated from the gas. A supplying passage connects the storing chamber with the crank chamber to supply the oil to the crank chamber from the storing chamber. A supplying valve is disposed midway in the supplying passage.

Abstract: According to the present invention, a method of producing a strong, dimensionally stable object includes providing a three dimensional, rapid free form fabricated object having a hollow internal cavity and flowing a strengthening material such as an epoxy resin into the internal cavity.

Abstract: The cable (1) comprises a plurality of optical fibre micro-modules (2) grouped together inside an external sheath (4). The external portion of the latter has four bosses (5) moulded integral therewith and which extend along the entire length of the cable and form, along the generating lines of the cable, four diametrically opposed ribs. These bosses, by creating a special arrangement for application to the cable of compressive forces, produce an improvement in crushing strength.

Abstract: A nickel base superalloy, having either columnar or equiaxed grain structure, which has significantly improved resistance to hydrogen embrittlement, and to fatigue in air is disclosed. The superalloy consists essentially of, in weight percent, about 0.006-0.17 carbon, about 6.0-22.0 chromium, up to about 17.0 cobalt, up to about 9.0 molybdenum, up to about 12.5 tungsten, up to about 5.0 titanium, up to about 6.7 aluminum, up to about 4.5 tantalum, up to about 2.5 hafnium, up to about 18.5 iron, up to about 3.25 rhenium, up to about 1.25 columbium, remainder nickel. The microstructure of the superalloy consists essentially of a plurality of fine, discrete carbide particles, .gamma.' precipitates in a .gamma. matrix, and is essentially free of script carbides, .gamma./.gamma.' eutectic islands and porosity.

Abstract: This invention relates to a process for thermally cracking waste polymer(s) comprising chlorinated polymers in a reactor in the presence of a fluidizing gas and a fluidized bed of solid, particulate fluidizable material at a temperature from 350.degree.-600.degree. C. to cracked products comprising a mixed vapor of lower hydrocarbons which have a chlorine content of less than 50 ppm. In the process, the cracked products emerging from the fluidized bed are passed through one or more guard beds comprising calcium oxide or a compound capable of giving rise to calcium oxide under the reaction conditions maintained at a temperature in the range from 400.degree.-600.degree. C. in such a way that the chlorine content of the product is less than 50 ppm.

Abstract: A method of producing a fiber tow reinforced metal matrix composite having effective alloy infiltration throughout the tow includes providing a conductive fiber tow comprised of a plurality of individual conductive ceramic fibers; providing an electrode; immersing the tow and the electrode in a slurry including particulates of a metal matrix composite material; applying an electric field between the conductive fiber tow and the electrode, wherein the individual fibers spread open thereby allowing uniform infiltration of the particulates onto the fibers; and consolidating the infiltrated tow.

Abstract: A compressor has a piston (11) that reciprocates between a top dead center and a bottom dead center in a cylinder bore (2a) by means of a driving body (9) mounted on a rotary shaft (6) in a crank chamber (5) during the rotation of the rotary shaft (6). The piston (11) has an outer circumferential surface that slides against an inner circumferential surface of the cylinder bore (2a). The outer circumferential surface of the piston (11) is provided with a groove (17; 44; 46) extending in the direction of an axis (S) of the piston (11). During reciprocation of the piston (11), lubricating oil adhered to the inner circumferential surface of the cylinder bore (2a) is collected in the groove (17; 44; 46). When the groove (17; 44; 46) is exposed to the inside of the crank chamber (5) from the cylinder bore (2a) during the reciprocation of the piston (11), the lubricating oil in the groove (17; 44; 46) is supplied to the inside of the crank chamber (5).

Abstract: A catalyst composition comprising at least one metallocene complex of general formula I or II ##STR1## wherein R is a univalent of divalent 1-20c hydrocarbyl, or a 1-20c hydrocarbyl containing substituent oxygen, silicon, phosphorus, nitrogen of sulphur atoms with the proviso that at least one R group contains a lewis base functionality and when there are two or more R groups present they may be the same or different, and when R is divalent it is directly attached to M and replaces a Y ligand, and wherein M is a Group IVA metal,Y is a univalent anionic ligandX is an organic group containing a cyclopentadienyl nucleus and for formula In is an integer of 1 to 10x is either 1 or 2, and for formula II,n, m and l are integers or 0 such that n +m +l .gtoreq.1, p =0-2, andz is a c.sub.1 to c.sub.

Abstract: An analog-external-modulation optical, emitter is described which comprises an electro-optical modulator and a piloting circuit. The piloting circuit comprises a pilot-tone-generating circuit; an electric control signal generated by the optical signal coming out of the modulator and a predetermined bias voltage are fed to the input of a differential amplifier the output of which is added to the pilot tone to feed an electric input of the electro-optical modulator. The RF input of the analog electric signal is connected to a linearizer circuit to which the pilot-tone-generating circuit is also connected. The output of the linearizer circuit is sent to an electric input of the electro-optical modulator through a band-stop filter adapted to eliminate the pilot tone downstream of the linearizer circuit.

Abstract: Methods and apparatus for kinematic studies of the movable joints of the body using magnetic resonance imaging. The apparatus controls the position of movable joints at a multiplicity of predetermined positions, enabling the controlled movement of the joints to each of the predetermined positions. It also includes a device which automatically sequences the movement of a movable joint to each position among the multiplicity of predetermined positions, and the acquisition of magnetic resonance imaging data at each of these positions. These features enhance the clinical utility of kinematic studies of movable joint functionality by magnetic resonance imaging.

Abstract: A viscous fluid type heater including a heating chamber and a heat exchange chamber, which is adjacent to the heating chamber. The heating chamber contains viscous fluid and a rotor. The heat exchange chamber is connected to a coolant circuit. The rotor is rotated by a drive shaft to shear the viscous fluid and produce heat in the heating chamber. The heat is transferred to the heat exchange chamber from the heating chamber to heat coolant passing through the heat exchange chamber and circulating in the fluid circuit. The heating chamber has a rear wall. The rotor has a rear surface facing the rear wall. Viscous fluid located between the wall and the rotor is sheared when the rotor rotates. A support shaft is supported by the rotor. The support shaft is eccentrically coupled to the drive shaft, which forces the viscous fluid located between the wall and the rotor to be periodically displaced. This prevents prolonged heating of any part of the fluid, which extends the life of the fluid.

Abstract: A multi-wavelength optical telecommunication method includes the steps of generating at least one optical transmission signal in a predetermined wavelength band, transmitting the optical transmission signal through an optical fibre to a receiving station, receiving the optical transmission signal through a passband filter and filtering the signal to let the transmission signal alone pass. The wavelength band is scanned in order to identify in the band a recognizable portion of the optical spectrum being received, thus determining, based on the operating conditions corresponding to the recognizable spectrum portion, a search range of the transmission signal within which the transmission signal is searched out and recognized based on its spectral profile.

Abstract: A flexible container for medical fluid including a flexible housing with an adapter secured to the housing for connecting an outlet to a complementary inlet of another container sealed by a stopper having an outlet connected to an inlet and disposed to serve as a conduit for fluid flow, with a movable member sealing the inlet and having a flexible body for controlling flow by the extent to which the flexible body is buckled and the removal of flex restores the seal; the stopper can take the form of a flow control device with an inlet for fluid and a slotted movable member sealing the inlet and closing the slot, with the unsealing of the inlet and the opening of the slot permitting the passage of fluid to an outlet, advantageously through a cannula that is surrounded by the opened slot and extends to the outlet; a member external to the flow control device, such as the tip of a Luer taper, can activate the moveable member by depressing it to allow the flow of fluid.

Abstract: An electromagnetic valve (32) opens and closes a pressurizing passage (31). When the pressurizing passage (31) is opened, a swash plate (15) mounted on a rotary shaft (9) inclines toward the minimum inclination. As the swash plate (15) inclines toward the minimum inclination, the swash plate (15) counteracts the spring force of a suction passage opening spring (24) and pushes a transmitting cylinder (28) and a shutter (21). The shutter (21) abuts against a positioning surface (27) when the swash plate inclination corresponds to a minimum inclination and disconnects a suction passage (26) from a suction chamber (3a). The disconnection impedes refrigerant circulation in the external refrigerant circuit (35). A refrigerant circulation controlling circuit (42) energizes the electromagnetic valve (32) and opens the pressurizing passage (31) for a certain time period starting from when a drive electric source (14) is activated.

Abstract: A pickup device has a core to which a coil is wound about. The core has a body formed by laminating a plurality of plates having a predetermined shape. Eddy currents produced by leakage flux is suppressed at the ends of the core. This is achieved by laminating a plate, which has a certain shape and is made of a material having a higher electric resistance value than the body, to the ends of the body. The generation of eddy currents may also be suppressed by providing notches at the ends of the core to obstruct the formation of a magnetic circuit at the ends. As another option, space may be provided at the ends of the core to disconnect the path of eddy currents.

Abstract: A method of repairing a metallic alloy article having a defect cavity greater than about 0.010 inches (2.5.times.10.sup.-4 m) in maximum width is disclosed. One aspect of the invention includes providing a first metallic filler material (10) in the defect cavity such that the first metallic filler material (10) substantially fills the cavity. The composition of the first metallic filler material (10) corresponds substantially to that of the metallic article. A second metallic filler material (12) is provided over the first metallic filler material (10). The second metallic filler material (12) includes between about 0 wt. % and about 40 wt. % metallic filler material of a composition corresponding substantially to the metallic article, and between about 100 wt. % and about 60 wt. % metallic filler material having the same basis as the composition of the metallic alloy article and including a melting point depressant in an amount substantially in excess of that in the metallic alloy article.

Abstract: A catalyst composition having high epoxidation activity and resistant to leaching of its metal comprises molybdenum, vanadium, tungsten and/or titanium complexed to an organic or inorganic support through the intermediacy of an imidazole ligand. The catalyst may be used in epoxidation of olefinic compounds.

Abstract: An improved viscous fluid heater is disclosed. The heater has a rotor that is operably coupled to a drive shaft. The rotor is disposed in a heating chamber filled with viscous fluid. The rotor is rotated with the drive shaft to shear the viscous fluid and generate heat in the heating chamber. The rotor has a flat rotor body and a boss. The boss has an axial length greater than that of the rotor body. A mechanism is provided with at least the boss. The mechanism mounts the rotor on the drive shaft and transmits torque of the drive shaft to the rotor.

Abstract: The invention relates to the straightening of the lugs of cast anodes, used in the electrolytic refining of metals, prior to immersing the anodes in an electrolytic cell. The method includes straightening of the lugs with both vertical and horizontal compression, and the smoothening of the bottom surface of the anode lug by means of machining.

Abstract: The support is designed to keep in expanded condition an elastic covering sleeve for elongated cylindrical elements such as electric cable joints and the like. The support comprises a tape wound spirally in side-by-side turns so as to take on a cylindrical tubular form and mutual constraint means between the turns to keep the tape in wound condition. In accordance with the invention the tape and the constraint means are provided in different materials.