Abstract: A protection device for a communication system is inserted between a circuit side and a subscriber side and includes a protection circuit part and trimmable resistors. The protection circuit part includes a tip line and a ring line each extending between an input terminal and an output terminal. The tip line and the ring line each contain at least one thermistor with positive temperature characteristic or one protection resistor as overcurrent-protecting element. The output terminals of the tip line and the ring lines are connected, say, by a diode bridge of which one terminal is grounded and another terminal connected to a power source. Trimmable resistors are each connected to a corresponding one of the output terminals of the protection circuit part and are adapted to be trimmed such that impedance imbalance between the tip and ring lines can be reduced.

Abstract: A chip thermistor is produced by providing a planar rectangular thermistor block with a pair of electrodes formed on its surfaces, each of the electrode being formed so as to be in part on a different one of the main surfaces and extending continuously at least onto one of the side surfaces. The thermistor block thus prepared is cut transversely to obtain a plurality of thermistor elements. A specified number of these thermistor elements are then aligned and stacked one on top of another with their main surfaces facing each other. A layer of an insulating material such as glass with thickness greater than 10 .mu.m is inserted between each mutually adjacently stacked pair of these thermistor elements. Outer electrodes are formed on the outer surfaces of the stacked structure so as to electrically connect to the electrodes on the stacked thermistor elements on their aligned end surfaces.

Abstract: An improved breadmaker capable of maintaining the freshness of the bread baked for a period of time. A temperature sensor and a humidity level sensor located inside the baking chamber of the breadmaker monitor the ambient conditions inside the baking chamber. In response to these sensors, a surface heater and humidifier are employed to maintain a predetermined temperature and humidity level inside the baking chamber.

Abstract: A degaussing circuit is formed as a series connection of a PTC element and a degaussing coil operated such that the operating frequency of the current therethrough is higher than the frequency of the power source line for the device such as a color television set in which this degaussing circuit is incorporated. This frequency conversion may be effected by a circuit which also functions to convert the alternating current from the power source line into a direct current. The degaussing circuit may further include a relay circuit for switching on and off the current through the PTC element and the degaussing coil.

Abstract: A three-dimension inductor structure formed in a conventional integrated circuit technology has a direction of magnetic field perpendicular to the normal direction of the substrate of an applied integrated circuit. Due to the direction of the magnetic field, the electromagnetic interference induced by the three-dimension inductor structure affects other components in the same integrated circuit slightly. The three-dimension inductor structure includes an N-turn coil. Each turn coil in the N-turn coil includes a first-level metal line, a second-level metal line and third-level metal line. The three levels of metal lines are separated from one another by isolating layers. Two nearby levels of metal lines are connected through via plugs in the isolating layers between them. The integral coil is accomplished by connecting the second-level metal line of the Nth turn coil to the third-level metal line of the (N+1)th turn coil.

Abstract: A weighing machine, such as a combinational weighing machine, has scale cells and a plurality of dummy cells installed on the same floor. The scale cells output weight signals corresponding to the weights of objects being loaded. The mode of vibrations of the floor is detected from dummy signals from the dummy cells, vertical displacements of the floor at the positions of the scale cells are calculated, and their effects are eliminated from the weight signals. Those of the scale cells not selected after a cycle of combinational calculations can be used as dummy cells in the next cycle. A memory device may be provided to store preferred combinations of such scale cells not selected that may be used for this purpose. Effects of the floor vibrations can be eliminated more accurately if the differences in sensitivity among the cells due to physical characteristics of the individual cells and/or due to the different loads on them can be taken into account either by a feedback calculation or by a formula.

Abstract: A method and apparatus for dilating blood vessels in vasospasm through the use of high frequency wave, e.g., hydraulic or acoustic waves. The invention is suitable to treat any vasospasm, including any vasospasm intractable to medication, including cerebral vasospasm, which currently is not susceptible to any mechanical or chemical treatments. The apparatus for dilating blood vessels includes a catheter having a fluid-filled lumen, a wave generator arranged within the catheter lumen for generating a wave front that propagates through the fluid in the lumen and is transmitted from the distal end of the catheter to propagate through the fluid in the blood vessel, and an energy source connected to the wave generator to provide energy to produce the wave front.

Abstract: The DC level of the output of an amplifier may be dynamically adjusted depending on the operating conditions of the amplifier by comparing the output of the amplifier to a set reference value using a comparator. The output of the comparator is then fed to a state machine which adjusts the DC level of the amplifier output in an autocalibration process until the DC level of the output of the amplifier is substantially equal to the reference value. An undervoltage lockout circuit detects a power supply to the amplifier and causes the calibration to be initiated only when the power supply meets certain requirements. A change in the gain setting in the amplifier is also detected for automatically initiating the calibration process.

Abstract: An input light beam is deflected by a totally reflective surface of a corner prism towards another surface of the prism which is coated by a partially reflective coating. A predetermined percentage of the input power is reflected by this coating and the remainder transmitted therethrough. The reflected optical power is collected by an output fiber and the transmitted power is directed towards another coating which either totally or partially reflects such power to another output fiber to accomplish optical coupling.

Abstract: Compositions of the invention include particular hydroxy-functional polyesters and a natural polymer. Among articles that can be made from such compositions are those with sufficiently strong tensile strengths as to form disposable utensils. However, the compositions are more environmentally friendly than commodity plastics such as polyethylene or polystyrene. Starches are particularly preferred as the natural polymers for inclusion in the compositions.

Abstract: An electronic component includes a main element such as a thermistor having electrodes formed on its surfaces, and lead terminals are electrically connected to these electrodes. A resin coating covers the main element, and both the main element and the lead terminals, except their tip parts away from the main element, are covered with another resin coating of an electrically insulating and flexible resin material.

Abstract: An improved fluid management system for irrigation of a body cavity and in particular for use in arthroscopic surgery having a pressurized fluid circuit for supplying irrigation fluid and a vacuum fluid circuit for withdrawing waste fluid from the cavity. In a preferred embodiment there is an uninterrupted fluid supply comprised of a plurality of sterile solution saline bags with an automatic spiker to perforate the bags. The system is processor controlled with numerous safety and design features to automate arthroscopy to the highest degree possible. Some of the features include the monitoring and tracking of cavity pressure and flow rates to predetermined pressure and flow rates, tracking cavity to mean blood pressure, overpressure protection, a plurality of pressure and flow rate baseline settings, monitoring, setting and controlling saline supply, and specialized functions for providing pressure and flow rates for typical surgical procedures such as lavage, clear view, and burr/shaver.

Abstract: A paper supplying apparatus has a rotatable member around a horizontal axis, a pair of clamp plates supported by this rotatable member mutually parallel and in face-to-face relationship for clamping a book block in between, and guide plates each attached to an associated one of these clamp plates, extending downward from the clamp plates to a lower edge part of the book block when the book block is held vertically. Such a paper supplying apparatus can be removably connected to a book binding machine by attaching a guide rail to an outer wall of the book binding machine and a runner to the paper supplying apparatus. The runner is slidably engageable with the guide rail, allowing the paper supplying apparatus to move along the guide rail selectably towards or away from the book binding machine.

Abstract: A thermistor with positive resistance-to-temperature characteristic used in a overcurrent protection circuit has electrodes on mutually opposite main surfaces and is mounted to a substrate having electrically conductive members such that deterioration of its voltage resistance due to heat emission can be controlled. A spacer with smaller thermal conductivity than the substrate and penetrated by a conductor piece with a small cross-sectional area is inserted between solder materials connecting to one of the thermistor electrodes. The other electrode is contacted by an elongated connecting member through its sectional surface transverse to its longitudinal direction such that the cross-sectional area of electrical conduction is reduced.

Abstract: Bleaching compositions are provided that comprise two nitrile groups where each nitrile is bonded to a quaternary nitrogen through a methylene unit. The quaternary nitrogens are part of a saturated ring. This saturated ring contains from two to eight atoms in addition to the quaternary nitrogen. A source of active oxygen will react with the nitrites for bleaching applications.

Abstract: Antibacterial compounds for Ralstonia solanacearum having substantially (S)-3-(3-indolyl) butanoic acid of a specified structure or its salt as active component can selectively inhibit the growth of Ralstonia solanacearum and suppress bacterial wilt dependably even if used at relatively lower concentration.

Abstract: A multi-point cell type weighing machine has a plural number of scale cells set on a floor to support a table and to output weight signals indicative of weights measured thereby of a target object placed on the table. One or more floor vibration detecting cells are set on the same floor and output floor vibration detection signals indicative of the vibrations of the floor. The weight signals are corrected on the basis of vibration components of the floor vibration detection signals. A standard weight is placed at a larger plural number of places on the table than there are scale cells and output sensitivity ratios among the scale cells are calculated from outputted values from the scale cells, and the weight signals are further corrected on the basis of the output sensitivity ratios. These weight signals are added together and the weight of the target object is obtained from the added signal.

Abstract: After a plurality of electronic devices such as thermistor elements are produced, each having electrodes formed on the surface of a ceramic body, they are separated into groups according to their measured resistance values. Those with resistance values smaller than a specified allowable range are repaired, having their electrodes abraded such that their resistance values are increased and brought into the specified allowable range.

Abstract: A keyboard comprising a plurality of Alpha-Numeric keys, a plurality of Direction keys and a Backspace key, a Delete key or a Enter key is provided. The plurality of Direction keys includes .fwdarw.,.rarw.,.uparw.,.dwnarw. keys to form an area of Direction keys. The Backspace key, a Delete key or a Enter key is disposed adjacent to the area of Direction keys for allowing a user's fingers to move between Direction keys and Backspace key, a Delete key or a Enter key without moving the palm.