Abstract: A recording medium reproducing apparatus which has a reduced height as compared to the conventional recording medium reproducing apparatus of the same type. The recording medium reproducing apparatus reproduces a selected one of a plurality of recording media accommodated therein. A recording medium reproducing unit reproduces one of the recording media. A recording medium accommodating unit has a plurality of recording medium accommodating sections each accommodating one of the recording media. A recording medium conveying mechanism conveys the recording media between the recording medium reproducing unit and the recording medium accommodating unit. A recording medium reproducing unit supporting mechanism rotatably supports the recording medium reproducing unit. A recording medium accommodating unit supporting mechanism rotatably supports the recording medium accommodating unit.

Abstract: A catalyst (3) for purifying an automotive exhaust gas, in which inner and outer catalytic layers (5,6), each of which has a base material and a catalytic material held by the base material, are stratified on a honeycomb-type carrier (4). In the catalyst (3), the inner catalytic layer (5) contains a palladium component as the catalytic component. Further the inner catalytic layer (5) contains a nickel oxide component for preventing poisoning of the palladium component. On the other hand, though the outer catalytic layer (6) contains a rhodium component as the catalytic component, it does not contain a palladium component nor a nickel oxide component.

Abstract: The present invention provides an novel polymer having 1-2,000 equivalents of an N-sulfoamino group/10.sup.6 g of weight of the polymer.The polymer has excellent dispersibility of inorganic fine particles, hygroscopicity, and dye-affinity. The polymer provides a binder resin in which a magnetic or non-magnetic metal or metal oxide can highly be dispersed. The polymer also provides a magnetic recording medium which is excellent in electromagnetic conversion characteristic, surface smoothness, adhesion to non-magnetic substrates, and durability. The polymer provides a magnetic recording medium with improved travelling, travelling durability, signal-to-noise ratio, and drop-out. The polymer also provides a polyester fiber which has a high fiber strength and an excellent hygroscopicity and can be colored with cationic dyes.

Abstract: An engine exhaust gas purifying catalyst contains, as active substances, platinum and at least one of iridium, III-B metals and IV-B metals. In particular, the catalyst contains mainly platinum and iridium and, desirably, rhodium as an additive catalyst substance.

Abstract: An intermediate tap 31 is provided on a vertical deflection coil 22 of a deflection yoke and the intermediate tap is connected to a chassis ground through a high-pass filter 32 which can pass only a ringing current to form a current path, thereby the the ringing current is prevented from passing through the vertical deflection coil 22 so that the raster ringing is substantially reduced.

Abstract: An exhaust gas purifying system for an automobile engine is equipped with a metal zeolite catalytic converter for deoxidizing and purifying nitrogen oxides in exhaust gas. The system controls and compulsorily changes the air-fuel ratio of the fuel mixture injected into the automobile engine based on a target air-fuel ratio only when the temperature of the exhaust gas, before entering the catalyst, is greater than a specific temperature.

Abstract: An exhaust gas purifying catalyst includes a metal-containing silicate and a noble metal active species carried by the metal-containing silicate. The metal-containing silicate has a solid acid characteristic wherein the amount of acid within a region where an acidity function Ho is equal to or smaller than -3.0 ranges from 0.04 to 0.55 mmol/gr. The noble metal active species burns an hydrocarbon component of exhaust gases to decompose an NOx component also contained in the exhaust gases. The catalyst may include a binder for carrying the noble metal active species on the metal-containing silicate. The binder has a solid acid characteristic wherein the amount of acid within a region where the acidity function Ho is equal to or smaller than -3.0 ranges from 0.04 to 0.55 mmol/gr.

Abstract: An exhaust gas purification system having a catalyst for removing nitrogen oxides from exhaust gas causes the temperature range of activation of the catalyst to shift toward the higher temperature side when the degree of oxidation of the catalyst becomes pronounced.

Abstract: A head-arm mechanism comprises a head-arm being provided with a head. The head-arm is supported so that the head-arm can rotate. The head-arm mechanism also comprises a first driver. The first driver drives the head-arm to rotate so as to make the head move on a data area of the disk during an access time. The data area is to be stored with information. In the access time the head records information on the disk or it reads information from the disk. The head-arm mechanism also comprise a second driver. The second driver drives the head-arm to rotate so as to move to a retaining or holding position so as to make the head move to a landing zone of the disk during an idle time. In the landing zone, no information is stored in the disk. In the idle time, the head does not record information on the disk nor does it read information from the disk. The head-arm also comprises a retainer or holder.

Abstract: An exhaust gas purifying catalyst includes an active compound, including platinum (Pt) and iridium (Ir), as an essential active compound base and any combination of two or more metals of terbium (Tb), nickel (Ni), indium (In), tin (Sn), cobalt (Co) and cerium (Ce), excepting a combination of indium (In) and tin (Sn), as an additive active material. The base and additive active material are deposited on and carried by a silicate carrier.

Abstract: A catalytic convertor for treating exhaust gas includes a first catalyst layer formed on a base material and a second catalyst layer formed on the first catalyst layer. The first catalyst layer is composed of metal-containing silicate provided with transition metal by ion exchange and at least one precious metal borne on the silicate, and the second catalyst layer is composed of metal-containing silicate provided with transition metal by ion exchange and at least one metal borne on the silicate which is selected from the group consisting of Zr, Co, Cu, Cr, Mn, Y, Fe, Ni, V, Ti, Zn, Ga, Ba, Mg, La, Ce, Pr, Nd, Sm and Tb and differs from the transition metal provided on the silicate by ion exchange.

Abstract: A catalyst for cleaning an exhaust gas includes a metal containing silicate containing Al and a metal M constituting a crystalline structure which is selected from a group consisting of Ga, In, B, Mn, Bi, Sc Y, V and Ta, a transition metal or a precious metal being carried in said metal containing silicate. The catalytic active range can be expanded.

Abstract: A hard disk drive has a configuration in which a metal cover, which is fitted with a hard disk, is fitted on a metal base by being screwed at a plurality of places, with a gasket being sandwiched in between the metal base and the metal cover. First protuberances are provided on the base on both sides of each hole for accepting a screw, there being one protuberance on one side and another on another side of said screw hole, second protuberances being provided on the cover at positions that are opposite to said first protuberances, and such that the first protuberances and the second protuberances are in pressured contact with each other on both sides of each screw portion, when the cover is fixed onto the base.

Abstract: Coating compositions, comprising (I) blocked urethane prepolymers, particularly those derived from tetramethyl-xylylene diisocyanate, and (II) curatives, such as polyether polyamines, oxyalkylene ethers of polyamines and ketimines of polyamine, are disclosed. Plastisol compositions, which comprise vinyl chloride polymers, plasticizers, and adhesion promoters, comprising (I) a blocked polyisocyanate, such blocked urethane prepolymers as above, or isocyanurate or biuret-containing blocked polyisocyanate, and (II) active amino group-containing mono- or poly-amide compounds, are also disclosed. These compositions are useful for coating metal surface to improve resistance to chipping.

Abstract: A pulley adapted to be press-fit on a driving shaft has projections having vertex portions with flat surfaces formed on an inner peripheral surface which is defined by a center hole of the pulley. The flat surfaces of the projections make pressing contact with an outer peripheral surface of the driving shaft at a band-shaped contact area (or surface) extending spirally or concentrically along a longitudinal direction of the pulley.

Abstract: A catalytic converter apparatus for reducing pollutants from an engine having a plurality of cylinders. The converter apparatus has an upper casing for mounting on the engine and branch pipes extending to the engine and through which exhaust gas discharged from the respective cylinders in the engine is led. A lower casing is connected to the upper casing for forming an exhaust manifold in cooperation with the upper casing. The lower casing has a discharge port for the exhaust gas. A catalyst casing is disposed within the exhaust manifold and has a support member extending therefrom and held between abutting surfaces of the upper and lower casings. Bolts are inserted through the casings from above the upper casing for coupling the upper and lower casings to each other and clamping the support member therebetween.

Abstract: An ignition apparatus is disclosed for use in a multi cylinder internal combustion engine having a first group of cylinders supplied with an enriched air-fuel mixture and a second group of cylinders supplied with a lean air-fuel mixture. A first control device controls the ignition timing of the first cylinders and a second control device controls the ignition timing of the second cylinders. The first and second control devices are adapted to operate in such a way that the ignition timing for the second cylinders is retarded relative to that for the first cylinders at medium or low load conditions of the engine, and the ignition timing for the second cylinders is advanced relative to or nearly the same as that for the first cylinders under a high load condition.

Abstract: A multi cylinder internal combustion engine is disclosed having the cylinders arranged in A and B groups. The A cylinders are supplied with an enriched air-fuel mixture, and the B cylinders are supplied with a lean air-fuel mixture. An apparatus for purifying the exhaust gas gathers exhaust gas from the cylinders A and cylinders B and subjects the same to oxidation reaction. Also, the exhaust gas is recycled into the intake system for the cylinders A.