Abstract: A process for machining a lead of a plunger to be used in a variable fuel injection rate type in-line fuel injection pump includes machining a plunger blank to form a port hole and then hardening. After this, the plunger blank is additionally machined, while being chucked by a NC machine, to form a shallow hole overlapping the lower end portion of the port hole. The plunger body is then machined in the chucked state with the machining reference of the shallow hole to form a longitudinal groove and a lead.

Abstract: A radioactive catalyst is disclosed which comprises a fine particle of semiconductor and a high radioactive platinum group element deposited on the particle of semiconductor. The radioactive catalyst serves as a source of radiation and also as a catalyst for oxidation-reduction reaction. By bringing the radioactive catalyst into contact with water, the water is decomposed by the oxidation-reduction reaction to produce hydrogen and oxygen.

Abstract: A radioactive catalyst is disclosed which comprises a fine particle of semiconductor and a high radioactive platinum group element deposited on the particle of semiconductor. The radioactive catalyst serves as a source of radiation and also as a catalyst for oxidation-reduction reaction. By bringing the radioactive catalyst into contact with water, the water is decomposed by the oxidation-reduction reaction to produce hydrogen and oxygen.

Abstract: A nonvolatile memory device has a memory cell having its gate connected to a word line, its source connected to a ground potential and its drain connected to a power supply voltage via a bit line and a dummy cell having its gate connected to the word line, its source connected to the source potential and its drain connected to the power supply voltage via a dummy bit line. The bit line and the dummy bit line are connected to reset and set terminals of a sense amplifier circuit comprising a flip-flop circuit and a latch type of sense amplifier. The conductance of the dummy cell is made smaller than that of the memory cell so that the speed at which the potential on the bit line is lowered depends on the state of injection of electrons into the memory cell as compared with the speed at which the potential on the dummy bit line at a time of reading data.

Abstract: In a nonvolatile semiconductor memory system comprising a memory chip and a batttery for driving the memory chip, the memory chip includes a memory-cell matrix, a row decoder, a first level-shifting circuit for shifting the level of the output of the row decoder, a column-selecting circuit, a column decoder, a second level-shifting circuit for shifting the level of the output of the column decoder, a sense amplifier, a third level-shifting circuit for shifting the level of the data which is to be written into the memory-cell matrix, a voltage-booster circuit, a timer circuit, and an oscillator circuit. The nonvolatile semiconductor memory system operates stably when driven by a low voltage or by a voltage over a broad range.

Abstract: A voltage multiplier for a use in a non-volatile semiconductor memory and operated at a low operation voltage with a reduced area comprising a plurality of cascade-connected basic circuits.

Abstract: In a nonvolatile semiconductor memory according to the invention, a power source voltage of 5 V used in an ordinary read mode is applied to a read line in the data read mode without changing its value. If a write line, a selection gate line, a control gate line, and a read line are respectively set at 0 V, 5 V, 0 V, and 5 V in the data read mode, the potential at an n-type diffusion layer becomes 0 V. In this case, the potential at the control gate line is 0 V, and the potential at a floating gate electrode becomes substantially 0 V. That is, an electric field is not applied to a thin insulating film located between the floating gate electrode and the n-type diffusion layer. As a result, electron injection and discharge due to the tunnel effect do not occur.

Abstract: A case for compact disks which comprises two case members. One edge of each of the case members is connected with connecting or hinge members. The two case members are opened and closed at these connecting members. Furthermore, latching means for holding the two case members in the closed state are provided on the other edge of each of the case members. When the two case members are closed, a plurality of storage compartments for storing a multiplicity of compact disks are formed therein.

Abstract: A nonvolatile semiconductor memory device comprises a cell transistor formed of a floating gate type MOS transistor, for storing an electric charge, whose gate is connected to a control gate line layer, a first selecting transistor formed of an MOS transistor, whose gate is connected to a read gate line layer, whose source-drain path is connected at one end to a read line layer, and at the other end to one terminal of the source-drain path of the cell transistor, and a second selecting transistor formed of an MOS transistor, whose gate is connected to a write gate line layer, whose source-drain path is connected at one end to a write line layer, and at the other end to the other terminal of the source-drain path of a cell transistor. A power source voltage of 5 V can be supplied to the read line layer in the read mode.

Abstract: A method for fusing together the bottom of a charged tubular container, formed of a synthetic resin, with its mouth being turned down, comprising the steps of:engaging a flattened portion of the upper end of said tubular container with one side of a vibrator terminal provided at the lower end of an ultrasonic generator oscillating at a given angle to said flattened portion, andapplying ultrasonic vibrations on said one side of said terminal, thereby applying said ultrasonic vibrations on said flattened portion.

Abstract: A hair dryer is provided with a hot air vent for preventing excessive rises in the air temperature of its hair-winding attachment. This vent is in addition to the air blowing holes of the hair-winding attachment for drying the hair. The dryer includes a temperature-sensitive valve for opening the hot air vent at a predetermined abnormal air temperature in the hair-winding attachment to prevent an excessive rise in temperature of the air in the hair-winding attachment which may damage the hair or the dryer body.

Abstract: A controlled cooling apparatus for a wire rod coiled into loops immediately after hot rolling. The coiled wire rod is transported with the loops laid substantially flat with a space of a given pitch from one another on a cooling bed. Nozzles are provided to project a cooling fluid such as forced air from below the cooling bed at an angle of from 40.degree. to 140.degree. with respect to the plane of the cooling bed to cool the coiled wire during its transportation. The nozzles are open in a transverse direction of the cooling bed with a nozzle opening area ratio of from 0.8 to 1.2, to provide uniform distribution of the cooling fluid in the transverse direction, whereby uniform cooling can be accomplished to minimize the variation in the cooling rates at densely overlapped loop portions and at sparsely overlapped loop portions.

Abstract: Flat and compact hair dryer of a type having a housing and an electric cord which can be wound in an outer peripheral groove of the housing. The cord is connected to a switch by means of a bushing rotatably pivoted within the housing so that the inner end of the bushing prevents the switch from moving to its ON-position from an OFF-position when the cord is wound around the housing. When the switch is in the ON-position, the bushing is prevented from rotating to a retracted position, thereby providing an indication that the switch is on.

Abstract: An electric device having rotary type current collecting means through electric source cord which is made freely rotatable with respect to variations in using position of the device for preventing any twist of the cord. The means comprises an integral block of a first carrier of current feeding conductor connected to the cord and a second carrier of current collecting conductor slidably contacting with the current feeding conductor of the first carrier for current collection from the cord to the electric device, the first and second carriers are rotatably coupled to each other and the integral block is assembled in the device body so as to stationarily hold the second carrier while the first carrier and cord are rotatably held with respect to the second carrier and device body.

Abstract: A method and apparatus for cooling a rod of a coil form, immediately after the hot-rolling thereof and within which the rod, whose loops are spaced a given pitch from one another, is laid flat upon a chain conveyor, and more particularly upon rails thereof, and transported therealong by means of endless chains, includes the cooling of the rod with cooling fluid or air which is introduced from below the cooling floors through means of nozzle portions formed within the bodies of the cooling floors. The method and apparatus features the arrangement and construction, including the configuration, of the nozzle portions thus formed, the cooling fluid being projected upwardly at an angle within the range of 10.degree.-70.degree. with respect to the plane of the cooling bed, and horizontally at an angle within the range of 10.degree.-150.degree.