Abstract: Method and apparatus for controlling an electromagnetic powder clutch connected to a vehicle engine and including a coil for engaging the powder clutch to transmit an output torque of the engine as a function of an electric current to be applied to the coil such that a variation in the engine torque is absorbed by a slip of the powder clutch. An optimum amount of slip of the powder clutch is determined based on a currently required engine output and a detected output speed of the clutch. A basic control value for controlling a magnitude of the electric current to be applied to the coil is determined based on the detected engine torque, such that the determined magnitude of the electric current permits engagement of the clutch so as to transmit the detected engine output torque. The basic control value is compensated for the determined optimum amount of slip of the clutch, thereby adjusting the transmission torque of the clutch so as to absorb the variation in the output torque of the engine.

Abstract: A cracking catalyst composition comprising a zeolitic, crystalline aluminosilicate, a matrix material and a barium titanium oxide. The catalyst composition is particularly suitable for cracking metal-containing hydrocarbon feedstocks.

Abstract: A high strength ceramic honeycomb structure includes a number of quadrilateral cells arranged adjacent to each other. Triangular cells are arranged in a zone in the proximity of an outer circumference of the honeycomb structure. Partitions of the triangular cells are oblique to partitions forming the quadrilateral cells and extending substantially toward a center of the honeycomb structure. The oblique partitions of the triangular cells serve to improve the isostatic strength of the honeycomb structure and to decrease the pressure losses.

Abstract: A compression apparatus for solid waste includes a precompression device and main compression device. A precompression device includes a precompression sleeve for receiving therein a cylindrical vessel filled with the solid waste and a press ram arranged above said precompression sleeve and movable upward and downward for compressing, at high pressure, the cylindrical vessel in the precompression sleeve. The compression sleeve includes an upper straight large diameter portion, and an intermediate tapered portion, thereby compressing the cylindrical vessel and reducing its volume in three dimensional directions by compressing the vessel radially inwardly at the tapered inner surface of the intermediate tapered portion. The main compression device includes a main compression press ram and a main compression sleeve having an inner diameter no more than the inner diameter of a lowermost end of the intermediate tapered portion.

Abstract: Metal-ceramic composite bodies are disclosed which each comprise a metallic member and a ceramic member. The metallic member is integrally connected to the ceramic member by fitting the ceramic member itself or a projection formed on the ceramic member into a recess or a through hole formed in the metallic member. The hardness of a metallic portion of including at least a fitted portion between the metallic member and the ceramic member is not less than HRC 38. The roughness of the inner surface of the faces of the through hole of the metallic member at the fitted portion is not more than 8 .mu.m at the maximum height (R.sub.max) or not more than 0.5 .mu.m at the center line average roughness (R.sub.a). A process for manufacturing the same is also disclosed.

Abstract: A composition for a sizing agent comprising (a) 70-99.9 wt.% of a substituted alkyl succinic anhydride or a substituted alkenyl succinic anhydride or a mixture of these succinic anhydrides, and (b) 0.1-30 wt.% of phosphates of polyoxyethylene alkyl ether esters or phosphates of polyoxyethylene alkyl aryl ether esters of a mixture of these phosphate esters and a process for using the composition by dispersing the composition, adding the produced aqueous dispersion to pulse alurry of paper making material, and making the paper. This composition for the sizing agent has excellent storage stability and underwater self-emulsion, and accordingly exhibits an excellent sizing effect and provides paper having an excellent sizing effect.

Abstract: A printer having a ribbon lift mechanism for lifting a ribbon from a rest position to a printing position. The printer operates in two different modes, that is, a printer mode in which characters are printed according to the data in a memory and a typewriter mode in which characters are printed according to the data from a keyboard. The ribbon is returned from the printing position to the rest position when no subsequent data comes from the memory within a first preset time interval in the printer mode or when no subsequent data comes from the keyboard within a second preset time interval in the typewriter mode. The second time interval is preset shorter than the first time inteval in order to print successively in the printer mode and to put back the ribbon to the rest position quickly when an operator needs to check the print on a printing paper in the typewriter mode.

Abstract: A fuel tank having a fuel inlet pipe which has a normally closed closure valve arranged therein and opened by a fuel pump nozzle. A valve housing is fixed onto the outer wall of the fuel inlet pipe. A cam and a normally closed control valve actuated by the cam and controlling the fluid connection between the canister and the interior of the fuel tank are arranged in the valve housing. The cam shaft of the cam is mechanically connected to the rotary shaft of the closure valve. When the closure valve is opened by the fuel pump nozzle, the control valve is opened by the cam to feed the fuel vapor in the fuel tank into the canister.

Abstract: In a process for preparing a spherical copper fine powder having an average grain size ranging from 0.1 .mu.m to a few .mu.m, by use of chemical vapor deposition of cuprous chloride vapor with a reducing gas, the vapor deposition zone is maintained at a temperature ranging 900.degree. C. to less than 1,150.degree. C. and the generated particles are quenched subsequently. The generated powder is utilized as a conductive powder which is the main component of a conductive paste.

Abstract: A high-strength steel for valve springs, consisting of 0.50-0.70 wt. % of carbon, 1.50-2.50 wt. % of silicon, 0.50-1.20 wt. % of manganese, 1.50-2.50 wt. % of nickel, 0.50-1.00 wt. % of chromium, 0.20-0.50 wt. % of molybdenum, 0.15-0.25 wt. % of vanadium, and the balance being iron and inevitably included inclusions. Also disclosed is a process for producing such a high-strength steel, which includes a step of minimizing oxygen in a melt of the steel, so as to reduce the oxygen content of the steel to 15 ppm or less, and a step of adding calcium to the melt and thereby controlling the form of the inclusions. The process may further includes a step of minimizing titanium and nitrogen in the melt, so as to reduce the titanium and nitrogen content of the steel to 50 ppm or less, and 60 ppm or less, respectively.

Abstract: A ceramic fiber is prepared without the need for a fiber-forming organic polymer or a coagulating bath by forming a homogeneous clear solution from an aluminum halohydrate organic complex dissolved in a mixture of water and a C1-C4 alcohol from which a clear homogeneous precursor filament is drawn and fired, which complex is obtained from an aluminum halohydrate and a polyol containing 2 to 6 carbon atoms and at least 2 hydroxy groups.

Abstract: A system for controlling an engine torque is provided, wherein the engine torque is changed by predetermined values when an automatic transmission is shifting to satisfactorily maintain the shift characteristics of an automatic transmission. An operating area for controlling the engine torque change and/or the predetermined values are corrected in accordance with temperature in an exhaust system of engine, or the frequency of the engine torque change. As a result, rise in temperature in the exhaust system, worsened fuel consumption rate and deteriorated contents of exhaust gas, which are caused due to the frequent torque changes can be avoided.

Abstract: A Tonpilz type piezoelectric transducer which can be used alternately as a wide-band receiver and an emitter includes a stack of pairs of piezoelectric segments separated by electrodes, the stack being placed between a horn and a countermass. An emitter is connected by a conductor to one of the two electrodes for each segment pair. One pair of segments next to the countermass is separated from the others by an insulator. The two electrodes to either side of the one pair are connected in parallel to a receiver and, through two diodes connected in opposition, to a grounded common conductor.

Abstract: Disclosed herein is a method of manufacturing dense cordierite, which includes steps of molding a powder mainly consisting of cordierite crystals and having an average particle size of not more than 5 .mu.m, firing a resulting molding at a temperature of from 1,350.degree. to 1,430.degree. C., whereby the sintered body having a porosity of not more than 6% and a bulk specific gravity of not less than 2.4 is obtained.

Abstract: Chitosan derivatives in the form of coordinated complexes with ferrous ions in which coordinated bonds are established between the ferrous ion and the amino group and hydroxyl group present respectively in position 2 and position 3 of the chitosanglucosamine ring.Said chitosan derivatives are soluble in an aqueous medium and are able to release iron into the gastrointestinal tract in a controlled manner.

Abstract: In a double air-fuel sensor system including two air-fuel ratio sensors upstream and downstream of a catalyst converter provided in an exhaust gas passage, an air-fuel ratio correction amount is calculated in accordance with the results of the comparison of the outputs of the upstream-side and downstream-side air-fuel ratio sensors with first and second reference voltages, respectively, thereby obtaining an actual air-fuel ratio. The second reference voltage is changed in accordance with the load of the engine, to change the mean air-fuel ratio.

Abstract: A ceramic body is continuously extruded through a die of an extruder and held on a porous support at a slightly floating state by air pressure jetted from pores of the support.

Abstract: Optical fiber-containing insulators each comprises an insulator body having a through hole provided in its central portion and extending along an axial direction thereof, an optical fiber core wire passing through the through hole, an insulating material filled between an inner peripheral surface of the through hole and the optical fiber core wire, and arrangements for preventing the filled insulating material from axially protruding out of the insulator body even at high temperature or spacers for holding the optical fiber core wire at the central portion of the through hole of the insulator body.

Abstract: In a gear synchronizer mechanism including a gear member rotatable on a shaft and having a cylindrical hub portion, a hub member mounted on the shaft for rotation therewith, a clutch sleeve formed at its one side with an internal conical surface and at its inner periphery with internal spline teeth in continual engagement with external spline teeth of the hub member and being axially shiftable on the hub member to be engaged at its internal spline teeth with external spline teeth of the hub portion, and a synchronizer ring formed with an external conical surface for frictional engagement with the internal conical surface of the sleeve and being axially movable on the hub portion to establish synchronization between the shaft and the gear member when engaged with the sleeve, a plurality of leaf springs are disposed within a plurality of circumferentially equally spaced radial recesses defined in the hub portion and engaged with the synchornizer ring in such a manner as to restrict axial movement of the synchro

Abstract: The installation comprises a self-cleaning filter (19), a heater (23), a centrifugal separator (25) and a belt filter (51) for filtering the solid sediments from separator (25).