Abstract: A refrigerating machine oil composition comprising: (A) an alicyclic polycarboxylic acid ester compound having an alicyclic ring and at least two ester groups represented by formula (1) bonded to adjacent carbon atoms of the alicyclic ring: —COOR1  (1) wherein R1 represents a hydrocarbon group having 1-30 carbon atoms, and R1 of each of the ester groups may be the same or different from each other; and (B) at least one epoxy compound selected from a group consisting of glycidyl ester epoxy compounds and alicyclic epoxy compounds.

Abstract: A generating control device for a hybrid vehicle includes a motor 13 for driving the hybrid vehicle, a battery 12 for driving the motor, a generator 11 for supplying the motor 13 and the battery 12 with electricity, an engine 10 for driving the generator 11 and a control unit 16. In operation, the unit 16 operates to change the operations of the generator 11 and the engine 10 in both of the normal generating mode and the battery protection mode. Therefore, it is possible to reduce the deterioration of the battery 12 of the hybrid vehicle and to ensure the fine driving performance.

Abstract: There is disclosed a controller for an electric vehicle that allows for securing a sufficient battery capacity and is able to substantially avoid giving an uncomfortable feeling to the crew even if an engine for power generation is started. The controller comprises a power generation control unit which makes a generator of the electric vehicle generate electric power by starting a generator-driving engine of the electric vehicle in the case that an SOC (state of charge) of a battery of the electric vehicle is equal to or less than a first value, and further makes the generator generate the electric power by starting the generator-driving engine in the case that the SOC of the battery is equal to or less than a second value larger than the first value and a predetermined condition is satisfied. Further, an electric vehicle provided with such a controller is also disclosed.

Abstract: A recording medium playing apparatus allows an arbitrary and easy selection and reproduction of each information piece of a recording medium carrying a plurality of information pieces which variously represent a scene on the same time axis position during reproduction of information. In the recording medium playing apparatus for playing a recording medium on which same-time information groups each formed by a plurality of information pieces of the same time position are recorded, reproducing means for reproducing information of the recording medium reproduces information of the recording medium by arbitrarily selecting each information piece of the recording medium based on a command for reproducing each same-time information group.

Abstract: A forming material for the fabrication of appliances for fixing, supporting, correcting and holding human bodies, characterized by a main forming material body including a quantity of granulated materials each coated with a moisture-curable urethane prepolymer contained within a water-permeable material container, the main forming material body being hermetically enclosed in a moisture-impermeable material container, wherein the moisture-curable urethane prepolymer and the water-permeable material container are unreactive with each other and have a low adhesive strength with respect to each other to provide good long term preservability and ease of operability to allow modeling and conforming the main forming material body to a desired shape.

Abstract: By calculating a fuel vapor quantity in a fuel tank based on a fuel temperature and a fuel residual quantity in the fuel tank, then calculating a fuel vapor purge quantity based on an engine revolution number and engine torque when an engine is driven, and then estimating a fuel vapor quantity captured in a vapor capturing unit based on the fuel vapor quantity and the fuel vapor purge quantity, the engine can be driven to purge the fuel vapor to the engine before the fuel vapor overflows the vapor capturing unit to thus be discharged into the air.

Abstract: A disc player includes: a plurality of pickup devices for reading information from a disc and a plurality of guide devices arranged radiately from a center of the disc, each for radially transferring one of the pickup devices. The guide devices are arranged so that each alternate pickup device is raised or lowered toward the inner circumferential portion of the disc.

Abstract: A hybrid electric vehicle comprises an electric motor, a battery pack for the electric motor, a generator driven by an engine to provide electric power used for charging the battery pack, and a battery management for the battery pack. The battery management determines a current value of battery temperature (BT) of the battery pack and a current value of state of charge (SOC) within the battery pack. What are stored are a first set of varying SOC values and a second set of varying SOC values against varying BT values. The first set of varying SOC values are minimum SOC values required for the battery pack to produce a constant electric power output at varying BT values. The second set of varying SOC values are each indicative of an allowable upper limit to the quantity of electric charge that will accumulate in the battery pack due to operation of charging the battery pack with a constant electric power input at a corresponding BT value.

Abstract: A disc player includes at least one pickup device, which includes a pair of objective lenses for reading information from a disc. The pair of objective lenses are independently movable in the radial direction of the disc by a magnetic field generated by a common magnet.

Abstract: A magnet rotor for a synchronous motor includes a yoke formed of a magnetic material. A generally cylindrical permanent magnet is disposed around the yoke magnet and has N and S poles alternately located in the circumferential direction of the permanent magnet. An adhesive is filled in the clearance between the outer peripheral surface of the yoke and the inner peripheral surface of the permanent magnet. The adhesive is hardened at a hardening temperature, which is around a maximum temperature encountered during operation of the motor to accomplish bonding between the yoke and the permanent magnet. The clearance between the yoke and the permanent magnet has a dimension L given by the following formula:L.gtoreq.(E.times..DELTA.L) / .sigma.swhere E is a tensile elastic modulus of the adhesive; .DELTA.L is a change amount of the clearance upon thermal expansion or contraction; and .sigma.s is a tensile stress applied to the adhesive.

Abstract: A disc player includes: a plurality of pickup devices for reading information from a disc; and a plurality of guide devices having a longitudinal axis for transferring the pickup device, the longitudinal axis being directed in a direction rotated by a predetermined angle with respect to a radial direction of the disc.

Abstract: An image forming lens system including a positive front lens group, a diaphragm, and a rear lens group, in this order from an object to be imaged. The front lens group is made of optical glass. The rear lens group is made of a single meniscus plastic lens having opposed aspherical lens surfaces with a concave surface adjacent to the diaphragm. The lens system satisfies the following relationships:f.sub.0 .multidot..vertline.1/f.sub.R-1 +1/f.sub.R-2 .vertline.<0.3-4<f.sub.0 /r.sub.R-1 <-0.7.DELTA.X.sub.R-1 /f.sub.0 <0.DELTA.X.sub.R-2 /f.sub.0 <00.1<d.sub.R /f.sub.0.In the above, f.sub.R-1 (=r.sub.R-1 /n-1) represents the focal length of the first surface of the plastic lens, f.sub.R-2 (=r.sub.R-2 /1-n) represents the focal length of the second surface of the plastic lens, f.sub.0 represents the focal length of the whole lens system, n represents the refractive index of the plastic lens at a reference wavelength, r.sub.

Abstract: A PLL circuit, to which an input signal is inputted, is provided with: a voltage controlled oscillator for outputting an output signal; a control voltage generation circuit for generating a control voltage to lock phases of the input and output signals by a loop, and outputting the generated control voltage to a control input terminal of the voltage controlled oscillator; and a central frequency setting circuit for setting a central frequency, to which a frequency of the output signal is to be pulled-in, to the control voltage generation circuit.

Abstract: A record medium of disc type is recorded by a constant linear velocity. The record medium is reproduced by a reproducing apparatus, which reads the information from the rotated record medium into a buffer memory by a transmission rate corresponding to the number of rotation of the record medium and outputs the read information from the buffer memory to an external apparatus by a predetermined output rate.

Abstract: A PLL circuit, to which an input signal is inputted, is provided with: a voltage controlled oscillator for outputting an output signal; a control voltage generation circuit for generating a control voltage to lock phases of the input and output signals by a loop, and outputting the generated control voltage to a control input terminal of the voltage controlled oscillator; and a central frequency setting circuit for setting a central frequency, to which a frequency of the output signal is to be pulled-in, to the control voltage generation circuit.

Abstract: A variable power optical system for a copying machine includes a first lens group having a negative power, a second lens group having a positive power, and a third lens group having a negative power. All three lens groups are moved to vary distances D.sub.1 and D.sub.2 between the first and second lens groups and between the second and third lens groups, to thereby vary the magnification in a range from an actual size to an enlargement range, while maintaining a constant distance between an object and an object image. In the range from the actual size to the enlargement range, the optical system satisfies the relationship defined by 0.60<.vertline.(D.sub.m1 -D.sub.e1)/(D.sub.m2 -D.sub.e2).vertline.<0.85, wherein "D.sub.mi " designates a value of D.sub.i (i=1,2) at a maximum magnification, and "D.sub.ei " designates a value of D.sub.i (i=1,2) at an actual size, respectively.

Abstract: An image forming lens system is provided which has at least three lens groups, wherein diameters of outer most circumferences of all of the lens groups are identical, and wherein positions of at least two of the lens groups in an optical axis direction is determined by direct contact of the two lens groups.

Abstract: An achromatic lens system includes in order, from the object side, a front lens group, a chromatic aberration correcting lens group, and a rear lens group. Aberrations, including spherical aberration, coma, astigmatism, curvature of image, as well as axial chromatic aberration of wavelengths from green to red, are substantially corrected by the front lens group and the rear lens group. The axial chromatic aberration of the wavelength blue, caused by the front lens group and the rear lens group, is corrected by the chromatic aberration correcting lens group.

Abstract: In an imaging apparatus, provided is an optical device which is capable of changing the magnifying power thereof. The optical device includes a zoom lens system having a power varying lens group and a correction lens group both of which are movable in the direction of the optical axis of the zoom lens system with respect to the zoom lens system. The zoom lens system is moved in the direction of the optical axis of the zoom lens system, and the power varying lens is driven synchronously with the movement of the zoom lens system. Further, the zoom lens system and the correction lens are moved in accordance with a magnifying power and data representing the amount of the displacement of the zoom lens system respective to the optical axis and the displacement of the correction lens with respect to the optical system.

Abstract: A steering angle detecting apparatus for accurately and surely detecting a steering angle of a motor vehicle. The apparatus is equipped with a turning angle detector for detecting a turning angle of a steering wheel of the motor vehicle. In addition, the apparatus estimates a turning angle of the steering wheel on the basis of the difference in speed between left and right wheels of the motor vehicle so as to calculate the difference in phase between the detection turning angle and the estimation turning angle. For detecting the accurate vehicle steering angle, the detection turning angle is corrected on the basis of the calculated phase difference therebetween.