Abstract: A magnetic disk apparatus includes a magnetic disk with normal and double servo sectors arranged alternately. If a servo interruption period corresponding to adjacent first servo sectors is a first servo interruption period, then a second servo interruption period that is a servo interruption period corresponding to adjacent first servo sector and second servo sector is equal to or less than half of the first servo interruption period.

Abstract: The controller circuit is designed to generate the positioning control signal based on the positional deviation of the head from a target recording track on a recording medium. A feedback control is effected to position the head right on a trajectory corresponding to the target recording track based on the generated positioning control signal. The positioning control signal is subjected to filtering at a notch filter. The cutoff frequency of the notch filter is set depending on the temperature detected at a thermal sensor. Even when the resonant frequency shifts in response to variation in temperature, the cutoff frequency of the notch filter follows the shift of the resonant frequency. A narrower bandwidth of the cutoff frequency still achieves reduction in the amplitude of the frequency component corresponding to the resonant frequency. The resonance or continuous vibration can reliably be prevented in the head.

Abstract: A magnetic disk apparatus includes a magnetic disk with normal and double servo sectors arranged alternately. If a servo interruption period corresponding to adjacent first servo sectors is a first servo interruption period, then a second servo interruption period that is a servo interruption period corresponding to adjacent first servo sector and second servo sector is equal to or less than half of the first servo interruption period.

Abstract: A tire anti-skid apparatus has a plurality of non-metallic anti-skid members adapted to be arranged along a peripheral direction of a tire, the anti-skid members including: an anti-skid tread portion; and a plurality of connecting portions extending from the anti-skid tread portion in a direction perpendicular to the peripheral direction; and linking portions adapted to be disposed on a vehicle outside portion and a vehicle inside portion of the tire and linking the connecting portions of the anti-skid members, the linking portions including a linking member provided in the anti-skid member and linking the adjacent connecting portions of the anti-skid member which are situated in the tire peripheral direction. The linking member, the connecting portions and the anti-skid tread portion are formed integrally with one another. The linking member is formed expandable and compressible, and the connecting portion is formed deformable in the tire peripheral direction.

Abstract: A tire anti-skid apparatus has a plurality of non-metallic anti-skid members adapted to be arranged along a peripheral direction of a tire, the anti-skid members including: an anti-skid tread portion; and a plurality of connecting portions extending from the anti-skid tread portion in a direction perpendicular to the peripheral direction; and linking portions adapted to be disposed on a vehicle outside portion and a vehicle inside portion of the tire and linking the connecting portions of the anti-skid members, the linking portions including a linking member provided in the anti-skid member and linking the adjacent connecting portions of the anti-skid member which are situated in the tire peripheral direction. The linking member, the connecting portions and the anti-skid tread portion are formed integrally with one another. The linking member is formed expandable and compressible, and the connecting portion is formed deformable in the tire peripheral direction.

Abstract: A mechanism for controlling the flow of air from an air-conditioning unit includes a row of guide vanes which are pivotally held by an outlet nozzle. The guide vanes are located at the lower end of an air course which has been formed within a body of the air-conditioning unit. The guide vanes control the flow of air in both left and right directions. This new design is characterized in that the angle of inclination of each guide vane progressively changes toward the end of the row. The air flow is controlled accurately in both the left and right directions so that the air flow reaches the desired location.

Abstract: In an apparatus in which a blow-out nozzle is provided at a lower end of an air course formed in the inside of a body of the air-conditioning equipment and blown air passed through the air course is blown out of a blow-outlet while guided in the left/right direction by a plurality of parallel guide vanes pivotally held by the blow-out nozzle, wherein each vane has a C-shaped annular pivotal bearing and a sleeve fitted into the bearing, a shaft extending from an inner wall of the nozzle being inserted into the sleeve, the shaft having claws which project from the upper end portion of the shaft so as to retain the sleeve.

Abstract: A mechanism for controlling the flow of air from an air-conditioning unit includes a row of guide vanes which are pivotally held by an outlet nozzle. The guide vanes are located at the lower end of an air course which has been formed within a body of the air-conditioning unit. The guide vanes control the flow of air in both left and right directions. This new design is characterized in that the angle of inclination of each guide vane progressively changes toward the end of the row. The air flow is controlled accurately in both the left and right directions so that the air flow reaches the desired location.

Abstract: A tire anti-skid apparatus including a plurality of non-metallic anti-skid members which are coupled at their side edges to an outer tightening member and to an inner tightening member via joints, the inner tightening member being in a form of a string comprised of stranded wires, and at least one of the anti-skid members being movable substantially parallel to the inner tightening member.

Abstract: A mechanism for controlling the flow of air from an air-conditioning unit includes a row of guide vanes which are pivotally held by an outlet nozzle. The guide vanes are located at the lower end of an air course which has been formed within a body of the air-conditioning unit. The guide vanes control the flow of air in both left and right directions. This new design is characterized in that the angle of inclination of each guide vane progressively changes toward the end of the row. The air flow is controlled accurately in both the left and right directions so that the air flow reaches the desired location.

Abstract: A mechanism for controlling the flow of air from an air-conditioning unit includes a row of guide vanes which are pivotally held by an outlet nozzle. The guide vanes are located at the lower end of an air course which has been formed within a body of the air-conditioning unit. The guide vanes control the flow of air in both left and right directions. This new design is characterized in that the angle of inclination of each guide vane progressively changes toward the end of the row. The air flow is controlled accurately in both the left and right directions so that the air flow reaches the desired location.

Abstract: A strip of paperboard material having a thickness of 170 to 600 .mu.m and a multiplicity of fold lines formed widthwise thereof at a predetermined spacing and U-shaped in cross section is caused to travel as reeved around two prefolding rolls, 5 to 30 mm in diameter, from different directions at a contact angle of 40 to 270 degrees to bring the projecting side of the fold lines into contact with the peripheral suface of one of the rolls and the indented side of the fold lines with the peripheral surface of the other roll. This method imparts increased foldability to the fold lines.

Abstract: A triazole compound having the formula (I): ##STR1## wherein R.sub.1 and R.sub.2 represent a hydrogen atom, a lower alkyl group or a dialkylcarbamoyl group, or R.sub.1 and R.sub.2 may be bonded to form an alkylene group, an oxyalkylene group or a thioalkylene group which may be substituted with a lower alkyl group, R.sub.3 represents a hydrogen atom or CONRR' where R and R' represent an alkyl group, an alkenyl group, an alkynyl group, a cyanoalkyl group or a phenyl group or benzyl group which may be substituted, or R and R' may be bonded to form an alkylene group, an oxyalkylene group or a thioalkylene group which may be substituted with a lower alkyl group; R.sub.4 represents ##STR2## where R.sub.5 represents a hydrogen atom, a lower alkyl group or a phenyl group, R.sub.6 represents a lower alkyl group, or R.sub.5 and R.sub.6 may be bonded to form an alkylene group, with a proviso that R.sub.1 and R.sub.

Abstract: An anti-skid device for automobie tires having a plurality of members joined together with hooks wherein mutually spaced tightening end portions of the anti-skid device body which extend radially inward along the side surfaces of a tire when the device body is set on the tire are connected to each other by a length-variable fastener consisting of hooks connected at one ends thereof to the opposed tightening end portions, and a plate having holes in its base portion and pivotably supporting the other ends of the hooks in different holes therein. A length of separation between the opposite tightening end portions can be set smaller than the free length thereof by rotating the plate.

Abstract: A triazole compound having the formula (I): ##STR1## wherein R.sub.1 and R.sub.2 represent a hydrogen atom, a lower alkyl group or a dialkylcarbamoyl group, or R.sub.1 and R.sub.2 may be bonded to form an alkylene group, an oxyalkylene group or a thioalkylene group which may be substituted with a lower alkyl group, R.sub.3 represents a hydrogen atom or CONRR' where R and R' represent an alkyl group, an alkenyl group, an alkynyl group, a cyanoalkyl group or a phenyl group or benzyl group which may be substituted, or R and R' may be bonded to form an alkylene group, an oxyalkylene group or a thioalkylene group which may be substituted with a lower alkyl group; R.sub.4 represents ##STR2## where R.sub.5 represents a hydrogen atom, a lower alkyl group or a phenyl group, R.sub.6 represents a lower alkyl group, or R.sub.5 and R.sub.6 may be bonded to form an alkylene group, with a proviso that R.sub.1 and R.sub.

Abstract: A method and apparatus measures thermal conductivity of a material effected by measuring a change in the temperature of the material in contact with a heat source maintained at a predetermined temperature. A temperature change characteristic is obtained from the result of the temperature measurement, and the thermal conductivity is obtained by comparison of the temperature change characteristic and unsteady heat transfer characteristics of solid bodies previously determined in consideration of the heat transfer resistance of the interfaces. The present invention is suitable for the measurement of extensive materials, metallic materials to heat insulating materials, specifically suitable for the measurement of materials of high thermal conductivity and heterogeneous or anisotropic and is capable of accurately measuring the thermal conductivity without any special consideration on the interface heat transfer resistance at the measurement stage.

Abstract: A fin-and-tube heat exchanger comprises a fin plate, a heat exchanger tube having portions extending through the fin plate, a plurality of fin collars formed in the plate, wherein louvers are provided so as to surround the tube portions except areas nearest to the collars, the louvers are in parallel with one another and project from alternately both surfaces of the plate, the louver which is located at the trailing edge side and at a position near to a central line of the tube bank is longitudinally extended so as to be along the collars and has opposite rising ends extending from the plate slanted toward the corresponding tube portions at an angle of 35 deg or below to the flow direction of the fluid, and the louver which is located at a position nearer to the trailing edge is also longitudinally extended and has opposite rising ends extending from the plate slanted toward the corresponding tube portions at an angle of 35 deg or above to the flow direction of the fluid so that the angle between the rising e

Abstract: A heat exchanger tube for evaporation or condensation, comprising:projected parts having cavities and provided on at least one of the inner wall surface and the outer wall surface of a tubular body, andplain parts formed on the same surface as the projected parts so that the projected parts and the plain parts mingle together.

Abstract: A heat exchanger is disclosed, which comprises a plurality of heat-transfer elements (1) placed side by side each of which has more than one through-hole (3) and which are cyclically bent in a generally trapezoidal wave form in the direction of the flow of a fluid, the bends in one heat-transfer element (1 ) being in phase with those in an adjacent heat-transfer element (1) in such a manner that the main stream of said fluid will flow not through the holes in each of said heat-transfer elements (1) but through the passage formed by adjacent heat-transfer elements (1). This arrangement not only provides improved heat-transfer characteristics; it also serves to offer a lighter product because of the presence of throught-holes (3).

Abstract: A heat exchanger is disclosed, which comprises a plurality of heat-transfer elements (1) placed side by side each of which has more than one through-hole (3) and which are cyclically bent in a generally trapezoidal waveform in the direction of the flow of a fluid, the bends in one heat-transfer element (1) being out of phase with those in an adjacent heat-transfer element (1) by one-half cycle in such a manner that the main stream of said fluid will flow not through the holes in each of said heat-transfer elements (1) but through the passage formed by adjacent heat-transfer elements (1). This arrangement serves to provide improved heat-transfer characteristics.