Abstract: An operating speed change-over device is equipped with an automatic speed change-over valve which opens and closes a pilot fluid line that connects a pilot port of a capacity change-over valve of a capacity-variable hydraulic motor to a pilot pump. The automatic speed change-over valve has one pilot port that is connected to a pressurized fluid feed line leading to the hydraulic motor and has another pilot port connected to the return fluid line of the hydraulic motor. The automatic speed change-over valve is changed over by an effective differential pressure between the two fluid lines.

Abstract: A pulsimeter having a detection electrode receptive of electrocardiac signals of a person and a pulse detection circuit, a switching element connected between an input terminal of the pulse detection circuit and a ground level, and a switch for controlling the conduction state and non-conduction state of the switching element so that the detection circuit can be protected from the static electricity by conducting the switching element in the pulse detection mode.

Abstract: A pulse detector comprising an electrocardiac potential detector for detecting an electrocardiac signal induced to the skin of the person and a pulse counter for counting the pulse rate. The pulse detector comprises a pulse detection supervisory system for automatically controlling a pulse detection sensitivity and noise sensitivity at the optimum value.

Abstract: A heartbeat rate indicator has a detection electrode on the surface of the housing such as a wristwatch case and the element of a circuit-input portion in which the existence of a switch connected to the detection electrode prevents the element from destroying with electrostatic charge produced at the moment of touching the detection electrode with the human body, the clothes or the like.Because in the non-depression state of the detection electrode, the detection electrode is connected elastically through the switch to one terminal of a power source so that the electrostatic charge produced at the moment of touching the detection electrode with the human body discharges to the one terminal of the power source.

Abstract: An electrochromic display device has an electrolyte contained between two spaced-apart substrates. A plurality of display segments are disposed on the surface of at least one of the substrates in contact with the electrolyte, and a counter electrode is disposed on the surface of the other substrate in contact with the electrolyte. Each of the display segments comprises a transparent electrode and an electrochromic layer disposed on the transparent electrode such that the display segment exhibits either colored or bleached states depending on the amount of electric charge held by the display segment. A charge transfer voltage is periodically applied between preselected bleached and colored display segments to effect transfer of electric charges through the electrolyte to thereby periodically change the display state.

Abstract: An electronic timepiece provided with an electrochromic display device as a time related information display.The ECD is driven by an electric charge transfer method. The electric charges which cause coloration of segments directly transfer from non-selected segments to selected segments.In the ECD additional concealed dummy segments temporally store the excess electric charges when the total area of the selected segments decreases, and release the stored electric charges when the total area of the selected segments increases, so that the electric charge density of colorized segment is always kept constant. Moreover electric charges are periodically supplied to the display device so as to compensate the lost amount which was dissipated during transfer cycle.

Abstract: A charge control circuit has an excess charge detecting circuit for preventing the excess charge of a secondary battery responsive to the voltage of the secondary battery, and a switching circuit responsive to the output of the excess charge detecting circuit. The switching circuit and the excess charge detecting circuit are operated by the electromotive force of a solar cell without the power dissipation of the secondary battery.

Abstract: A driving circuit for an electrochromic display device in which electric charges for coloration in a colored segment group are transferred to a bleached segment group to change the display state by the application of a voltage between the colored segment group and the bleached segment group comprises an electric charge transfer control circuit for producing an electric charge transfer signal only when the display information displayed by the electrochromic display device is being changed, and an electric charge transfer-time control circuit for setting the electric charge transfer-time at a time more than the maximum transfer time required by the electrochromic display device both during low temperature operation and during electric charge transfer using the maximum number of segments for which electric charge transfer can be carried out by the electrochromic display device.

Abstract: An electrochromic display device has an electrolyte contained between two spaced-apart substrates. A set of display elements including first and second display elements are disposed on the surface of at least one of the substrates in contact with the electrolyte, and a counter electrode is disposed on the surface of the other substrate in contact with the electrolyte. Each of the display elements comprises a transparent electrode and an electrochromic layer disposed on the transparent electrode such that the display element exhibits either colored or bleached states depending on the amount of electric charge held by the display element. A charge transfer voltage is selectively applied between preselected bleached and colored display elements to effect transfer of electric charges through the electrolyte to thereby change the display state.

Abstract: An electrochromic display device comprising a display electrode group, a refresh electrode and a counter electrode, is driven by an electric charge transmisson method.Initially the coloration electric charge is injected into some of the display electrodes from the counter electrode. Thereafter the stored coloration electrode charge is cyclically transmitted among the display electrode group to display a variant pattern. The repeat of the transmission causes deterioration of an amount of the coloration electric charge. In order to compensate a lack of the amount of the coloration electric charge, periodically a coloration electric charge is injected into the refresh electrode from the counter electrode. Then the newly added coloration electric charge is transmitted into the display electrode group to maintain display contrast.

Abstract: An electrochromic display device comprises; an electrolyte held between two substrates at least one of which is transparent. A display electrode is formed on a surface of one substrate and has an electrochromic substance film formed thereon, the surface being in contact with the electrolyte. A first counter electrode is formed on a counter surface of the other substrate in opposed spaced-apart relationship with respect to the display electrode, and a second counter electrode is formed on a face of either one of the substrates, the face being in contact with the electrolyte. Circuitry applies a first voltage between the display electrode and the first counter electrode to effect coloration of the display electrode, and applies a second voltage between the first and second counter electrodes to establish an electric field therebetween effective to remove a negative ion region which forms in the vicinity of the first counter electrode during coloration of the display electrode.

Abstract: A charging control circuit for an electronic timepiece has a power source circuit including a charging device and a secondary battery, an electronic timepiece circuit, a drive signal change-over circuit for changing an alarm signal and warning signal for excessive charge, and a buzzer driving circuit for driving a buzzer.The buzzer sound for indicating excessive charge to the secondary battery is different from that of time alarm.

Abstract: A detecting circuit for a power source voltage comprises a reference voltage generating circuit for generating a reference voltage, a voltage dividing circuit for dividing the power source voltage, and a voltage comparing circuit having one input terminal connected to receive the reference voltage from the reference voltage generating circuit and another input terminal connected to receive the divided voltage from the voltage dividing circuit. In one embodiment, the reference voltage generating circuit comprises at least two MOS-transistors having different threshold voltages and having the same polarity, one of the MOS-transistors having its gate and drain connected together with the drain being connected to the gate of the other MOS-transistor, the drain and source of the other MOS-transistor each being connected to a resistor, and the drain of the other MOS-transistor being connected to one input terminal of the voltage comparing circuit.

Abstract: A driving system for an electro chromic display, comprising a display information signal generator, a generator of a coloring pulse and an erasing pulse, a memory time counter, a refresh pulse arrange circuit and a driver. The display means is refreshed when a memory time determined by the memory time counter has elapsed, to maintain color regularity.

Abstract: In contact-printing the image of a transmission type original on a photosensitive plate material positioned on a printing stage, the original is in advance fixed to a transparent sheet which is movable between an open position and a closed position. The original is fixed to the transparent sheet at a predetermined position thereon at which the original will be registered with the plate material when the transparent sheet is moved to its closed position. In the open position, the transparent sheet is held away from the printing stage to permit change of the plate material and in the closed position, the transparent sheet sealingly covers the plate material in a predetermined positional relationship therewith and the space under the transparent sheet is evacuated to bring the transparent sheet, the original and the plate material into close contact with each other. Then, the three members are exposed to light.

Abstract: A case-back of an electronic timepiece is provided with a means to detect whether said timepiece is on a human arm or not. When the timepiece is put on the arm, said detecting means operates a switching means to enable a display. When the timepiece is taken off the arm the display is not operated, so the consumption is reduced and the battery is saved.

Abstract: With a storage tank temporarily held in the correct position, an abutment plate is applied to the lower surface of each of support chocks projecting from a plurality of places circumferentially of the storage tank toward a support deck and in this condition such adjusting plates are temporarily fixed at the support deck as by bolts. A molding flask for preventing the outflow of resin material is placed to surround each abutment plate. Subsequently, a liquid resin material which, upon setting, becomes resistant to pressure and low temperature is poured into a space surrounded with the molding flask between the abutment plate and the support deck. After the resin has set, the storage tank is in the correctly installed condition supported by a support block formed of the resin. The upper surface of the support block serves as a slide surface provided by the abutment plate.