Abstract: In an electronic balance used for a scale of a weighing unit of a feeder, a wiring member for supplying an electric signal from a control device to a driving source of a feeder unit is provided so as not to adversely affect a weighing pan. A flexible substrate using as the wiring member has one end provided with an electric signal input substrate and has the other end provided with an electric signal output substrate. A U-shaped curved portion is formed near the electric signal output substrate and arranged below a pan boss. The electric signal output substrate is fixed to the pan boss, the electric signal input substrate is fixed to a fixed frame, and the flexible substrate is provided in a case that houses a sensor unit.

Abstract: Provided is a viscoelasticity measuring method and a viscoelasticity measuring device which reduce the number of measurement points and simplify a device design. In order to achieve the object described above, in a viscoelasticity measuring method, a vibrator is immersed in a measurement liquid, a drive signal for driving the vibrator at a resonance frequency (f00) of the vibrator in the air is output, vibration of the vibrator is detected by a detection sensor, and a signal phase delay (?) of a sensor output signal of the detection sensor with respect to the drive signal is measured.

Abstract: Provided is a battery charger suitable for an electric pipette, improved in degree of installation freedom and expandability. A battery charger includes a pipette receiver, left and right arms extending forward from the pipette receiver, charging electrodes that come into contact with pipette side electrodes exposed to the outside of a main body of an electric pipette and charge a battery of the electric pipette, a power delivering port, and preferably, a power relay port, and a pipette receiver rear surface is formed with a vertical plane, and the vertical plane acts as a fixing part.

Abstract: A vibration unit which includes a circular direction vibrator, a liquid detector resonated by the circular direction vibrator, and a vibration transmission member for connecting the circular direction vibrator and the liquid detector and being twist vibrated when the liquid detector is resonated. The resonant liquid detecting device includes a mounting member provided at a location including a node of resonance existing in an intermediate portion of the vibration transmission member and is adapted to suspend the vibration unit in a constant position while the opposite ends of the vibration unit operate as free vibration ends.

Abstract: A twist vibrator includes a piezoelectric bimorph which vibrates at a fist end thereof in a twisting direction, and a rigid block connected to a second end of the bimorph. The rigid block restrains the second end from being deformed.

Abstract: A piezoelectric actuator has a zigzag-shaped actuator body, and an expansible piezoelectric element attached to the actuator body. The actuator body has zigzag elements. The zigzag elements are shifted toward and away from each other by expansion/contraction of the expansible piezoelectric elements. The actuator body is expanded and contracted by positional shifting of the zigzag elements.

Abstract: A viscometer has a hollow torsion bar to be dipped into a liquid, the viscosity of which is to be measured, a probe constituted by a massive hollow body mounted on the distal end of the hollow torsion bar, a vibrator mounted in the hollow body for producing vibrations in a circular direction around the axis of the torsion bar, a vibration detecting sensor mounted in the hollow body for detecting vibrations of the vibrator, a wiring pipe within the hollow torsion bar and spaced from the interior surface thereof and having conducting wires therein extending to the vibrator and to the sensor and adapted to be connected to an external vibrator driving circuit and an external vibration sensing circuit.

Abstract: A method of producing foamed thermoplastic resin articles having smooth and glossy surfaces free from swirl marks and hair cracks, which comprises melting a thermoplastic resin containing a condensable blowing agent and an organic chemical blowing agent, injecting, in full shot, the molten resin into a mold cavity to which a pressurized gas is being applied during said injection, terminating the application of the pressurized gas to the mold cavity, enlarging the volume in said molded cavity by movement of a mold wall, and thereafter cooling and solidifying the resin to form the foamed articles.