Abstract: A flow rate control device for a pump includes a housing, a choke tubular passageway connected between a pump pressure chamber and an output chamber, a spool valve which is slidably provided in the housing, and which has both ends exposed in the pump pressure chamber and the pressure reducing chamber, respectively, the spool valve causing a pressure medium to flow from the pump pressure chamber into the by-pass port as much as the spool valve slides in an axial direction thereof. In the device, the choke tubular passageway is formed in a central shaft member arranged in the housing, and a sleeve member is provided around the central shaft member, the sleeve member being moved, from the pump pressure chamber towards the pressure reducing chamber, with respect to the central shaft member, in such a manner as to change the opening area of the choke tubular passageway.

Abstract: The present invention provides a rechargeable battery with a nonaqueous electrolyte, comprising a cathode composite, an anode active material and a nonaqueous electrolyte, the cathode composite containing as a cathode active material an aniline-containing amorphous FeOOH having a density of 2.2 to 2.4 g/cm.sup.3 in the form of a powder and showing peaks similar to those derived from .gamma.-FeOOH at 2.theta. of 14.degree., 27.degree. and 44.degree. as analyzed by X-ray diffractometry with CuK.alpha. radiation, the anode active material comprising a lithium ion doped compound, the nonaqueous electrolyte comprising a solution prepared by dissolving a fluorine compound selected from the group consisting of lithium hexafluoroarsenate, lithium hexafluorophosphate and lithium trifluoromethanesulfonate in a solvent mixture comprising ethylene carbonate and an ethereal solvent in a volume ratio of 2:1 to 1:2 in a concentration of 1.0 to 1.5 mol/dm.sup.3.

Abstract: A method and apparatus for measuring the remaining charge of a galvanic cell effects the measurement of the remaining charge by superimposing an AC voltage or current on DC voltage or current issuing from the cell to produce a higher harmonic current or voltage, determining the value corresponding to a higher harmonic component of n'th order from the higher harmonic current or voltage, and comparing the value thus measured of the cell under test with that measured previously in the same manner of a reference galvanic cell. Since the corresponding value of the higher harmonic current or voltage of n'th order varies notably with the decrease in the remaining charge of the galvanic cell, the comparison of the found corresponding value with the reference characteristic is effected with ease and the measurement can be carried out accurately and simply.