Abstract: The cold resistance of chloroprene rubber can be improved by blending an ester derived from a specified glycol component and a specified fatty acid component without any adverse effect upon the other physical and chemical properties of the rubber. This ester is not extracted with oily matters such as oil or grease, so that the resulting chloroprene rubber composition hardly exhibits a decrease in cold resistance even after extraction with oily matters.

Abstract: A cathode ray tube including first and second cathodes mounted parallel to each other in the horizontal direction, and a deflecting device disposed along the passages of the first and second electron beams which are emitted from the first and second cathodes so as to apply to the first and second electron beams a rotational force with the axis of the tube as its center, and whereby the first and second electron beams impinge on the phosphor screen at positions which are spaced apart from each other by a distance of approximately half the distance between adjacent scanning lines in the vertical direction.

Abstract: In a full-wave rectifier circuit, a sinusoidal signal is applied to a differential amplifier, first and second current mirror circuits obtain outputs from the differential amplifier which are opposite in phase to each other. Outputs of the first and second current mirror circuits are applied respectively to the input and output sides of a third mirror circuit and other outputs of the first and second current mirror circuits are applied respectively to the input and output sides of a fourth mirror circuit. The connecting point of the first and fourth current mirror circuits is connected to the base of a first emitter-follower-connected transistor, while the connecting point of the second and third current mirror circuits is connected to the base of a second emitter-follower-connected transistor. The connecting points are connected to a current source circuit. The first and second emitter-follower-connected transistors have their emitters connected together, to provide a full-wave-rectified output.

Abstract: A reflection type kerosene stove of which the kerosene meter and kerosene inlet are located in a space provided in the stove body and closed by a door, thus hiding the kerosene meter and inlet which are liable to be soiled with kerosene, when not used.

Abstract: In a non-linear integration circuit, an audio sine wave signal is processed by a rectifier circuit and a smoothing circuit so that a DC output is obtained according to the amplitude of the signal. A hybrid diode which is similar in voltage-current characteristic to a silicon diode and is referred to as an "analogous diode" is connected to the smoothing circuit, so that a DC output is obtained by means of the analogous diode in response to an abrupt change in amplitude of the input signal. The signal can be processed on a low supply voltage, and employment of the analogous diode provides an output which is similar to that which is provided by the use of a silicon diode.

Abstract: A variable impedance circuit is disclosed which comprises a pair of diodes having their cathodes connected together, a first current source coupled to the connection between the diodes, and a second and a third current source which are connected to the anodes of the diodes respectively. The second and third current sources are controlled by means of current mirror circuits so that equal forward currents are caused to flow therefrom to the paired diodes, thus making it possible to set up a desired impedance variation range.

Abstract: Kerosene combustion apparatus of a type having a vertically movable wick disposed between coaxial outer and inner cylinders, the outer cylinder being provided with slits formed at the edges of the projections whereby complete and quick extinction of flame may be achieved with considerably reduced odor.

Abstract: A semiconductor integrated circuit device including a power amplifier circuit which includes a first PNP transistor, first NPN transistor, second PNP transistor and second NPN transistor which are formed in a common semiconductor substrate. The first PNP transistor is formed as a vertical type one which constitutes, together with the second NPN transistor, a first inverted Darlington circuit. The first NPN transistor, together with the second PNP transistor, constitutes a second inverted Darlington circuit. A d.c. power source is supplied to the emitter of the vertical type PNP transistor, with the emitter of the first NPN transistor being grounded.

Abstract: A comparator receives an input voltage as well as one of two comparator levels and compares them to selectively produce one of two outputs having different values. A comparator level generator is connected to the comparator for selectively applying one of the two comparator levels to the comparator under the control of a controlling means. The controlling means is connected to both of the comparator level generator and the comparator for controlling the comparator level generator so as to change the comparator level in response to the new state of the comparator.

Abstract: In a loudness control circuit, the output DC voltage of a first variable DC voltage source is applied to a first amplifier for increasing volume to vary the gain of the latter, and to first and second differential amplifiers, while the output DC voltages of second and third variable DC sources are applied to the first and second differential amplifiers to provide difference voltages, which the applied to second and third tone control amplifiers which amplify the low and high frequency ranges, respectively, to control the gains thereof, so that the components of the sound in the low and high frequency ranges are boosted, thus achieving the weighting.

Abstract: A level indicating device for indicating input signal level purely electrically which includes a plurality of voltage comparators having threshold values set in order in terms of level, and a fluorescent indicator tube incorporating therein a plurality of anode electrodes aligned in a row. The outputs of the voltage comparators are connected to respective anode electrodes, so that when a signal is applied to the voltage comparators, the level of the signal is indicated by the number of the anode electrodes illuminated.

Abstract: A coffee maker includes a housing provided with a hinged cover at its top. An arcuate flange adjacent the hinge side of the cover extends downwardly from the inner surface of the cover in the closed position of the cover; and a flange extends radially inwardly and obliquely downwardly from the lower edge of the arcuate flange to form a receptacle. When the cover is moved into its opened position, condensation water on the inner surface of the cover flows into the receptacle. When the cover is returned to its closed position, such condensation water flows into the housing.

Abstract: In a noise cancelling system for FM receivers, means is provided whereby a pilot signal of 19 KHz is always detected from a stereo composite signal, whether or not a noise canceller circuit is operated. The 19 KHz pilot signal is injected into a phase locked loop, and a signal of 38 KHz in synchronism with the 19 KHz pilot signal is generated which in turn is injected into the multiplex demodulation circuit. Furthermore, means may also be provided which eliminates, from the 19 KHz pilot signal, noise mixed into the stereo composite signal and having a frequency characteristic of (19/n) KHz (n=1, 2, . . .) and then detects the foregoing pilot signal, thereby achieving satisfactory stereophonic separation.

Abstract: Magnetic recording and playback means employing cassette tape in which signals representative of the rotation period of a tape reel stand are supplied to a flip-flop ring counter which also receives reference input signals from another pulse emitter and which can actuate a linear array of externally viewable display means, the number of display means actuated in this array being dependent on the rotation period of the reel stand, whereby, since this rotation period is proportional to the amount of tape on a reel supported by the stand, there is given an immediately appreciable indication of the amount of tape remaining available for recording or playback.