Abstract: The names in a directory stored in a personal terminal having a display are displayed as groups of names in which illustratively the first name in each group of names serves as a displayed tab which is pointed to by the user to display the respective group of names. The individual tabs are dynamically changed to conform with any change in the first name of the respective groups of names that may occur as a result of a change in the composition of the directory.

Abstract: A vibrating transducer for detecting the resonant frequency of a vibrating diaphragm and using that frequency to determine the pressure or density of a fluid contacting the diaphragm. The device includes a container having a diaphragm separating the cavity in the container into two chambers with the diaphragm preventing flow communication between the two chambers. A first fluid inlet in flow communication with the first chamber introduces fluid to the first chamber with that first chamber having an acoustic compliance less than the mechanical compliance of the diaphragm. The second fluid input is in flow communication with the second chamber and introduces fluid into the second chamber. By controlling the acoustic compliance of the chamber with respect to the diaphragm accurate measurements of the density or pressure of the fluid can be obtained.

Abstract: The invention relates to a method for the automatic correction of the variations of efficiency of an electroacoustic transducer as a function of the frequency for improving the accuracy of a device measuring the thickness of layers of materials by ultrasonic interferometry.

Abstract: A system is provided for regulating the field of a high homogeneity magnet. The fluid used for cooling the main magnet is placed in thermal contact with a high homogeneity auxiliary magnet in which is placed an NMR probe which controls the current supply to the two magnets connected in series.

Abstract: An accelerometer is composed of a pair of housings each of which forms a magnetic structure together with a permanent magnet and a flapper flexurally supported by hinge portions between the magnetic structures. The permanent magnet is secured to the housing of the magnetic structure by means of a spacer so as to prevent a harmful thermal stress which will be caused by the difference of thermal expansion between the magnet and the housing. A bobbin with a torquer coil is secured to the flapper by means of a base member to take no effect of thermal stress which will be caused by the difference between the materials of the bobbin and the flapper. The above elements are housed in a case which is installed in an instrument board so as to be unaffected by changes in temperature in surroundings of the accelerometer.

Abstract: A method, apparatus and system for the ultrasonic detection and evaluation of flaws in annular test objects including an arrangement of ultrasonic transducers that are rotated about the outer surface of the test object and provide an ultrasonic indication fo flaws in the object, and for electronically collecting, storing, and analyzing the flaw data gathered by the ultrasonic transducers, to further provide a predetermined objective indicia of acceptablility concerning the structural integrity of the test object.

Abstract: The temperature range for stable operation of a flueric partial pressure sensor (300) is improved by temperature-responsive means (80, 60) which vary with temperature change the suction applied by a flueric aspirator (27) in drawing gas through sensor bridge legs (12, 13) and a power line (37) of a flueric amplifier (11). The temperature-responsive means may comprise temperature-sensitive adjustment means (107, FIG. 2) embodied in a pressure reducing valve (80) to vary the pressure of working gas supplied by way of delivery line (28) for driving the flueric aspirator. Alternatively or additionally the temperature-responsive means may comprise a temperature-sensitive bleed valve (60) incorporated in a common outlet (14) from the bridge legs and the flueric amplifier power line.

Abstract: There is disclosed a data transmitting and receiving circuit extremely advantageous when applied to a key telephone system. The data transmitting circuit comprises a voltage dividing circuit for dividing a power supply voltage to apply the divided voltage to one end of a primary winding of a transformer, and a driver circuit comprising a pair of transistors connected in series between the power supply and a common potential terminal, the node of the transistors being connected to the other end of the primary winding of the transformer. When data signal is transmitted, the data transmitting circuit is operative to complementarily turn and off the pair of transistors in accordance with the data signal. In contrast, when data is not transmitted, the data transmitting circuit is operative to cut off both the transistors. Thus, the data transmitting circuit can eliminate the possibility that a DC voltage on which a data signal to be transmitted is superimposed undesirably changes.