Abstract: A high reliability and low power consumption anti-lock brake system is disclosed in the present invention. The two pilot valves in the present invention are controlled so as not to be energized concurrently. The secondary battery of the anti-lock brake system is charged by power supply and/or generator. An electric double layer capacitor comprising a housing made of functionally graded aluminum—ceramic material is used as the secondary battery.

Abstract: A dielectric ceramic composition having high static capacitance and high dielectric constant and satisfying X7R characteristics and a multilayer ceramic capacitor using the same is provided. The dielectric ceramic composition comprises barium titanate as a main component, and comprises magnesium oxide, dysprosium oxide, barium oxide, calcium oxide, and vanadium oxide, as subcomponents, wherein magnesium oxide converted into MgO is 1 to 3 mol, dysprosium oxide converted into Dy2O3 is 1 to 5 mol, total of barium oxide and calcium oxide converted into BaO and CaO, respectively, is 0.1 to 5 mol, and vanadium oxide converted into V2O5 is 0.01 to 0.1 mol, when barium titanate converted into BaTiO3 is 100 mol.

Abstract: In a microactuator device (2) having a cut face formed by cutting or splitting, the cut face is subjected to anti-release treatment for preventing release of particles produced by cutting. The microactuator device may have a multilayer structure including a plurality of piezoelectric elements and a plurality of internal electrodes alternately laminated. In this case, the multilayer structure has the above-mentioned cut face. It is preferable that the microactuator device is mounted between a base plate (3) to be fixed and a support spring (5) for supporting a head (4), and that the microactuator device and portions of the base plate and the support spring which are adjacent to the microactuator device are collectively coated with a coating film.

Abstract: In a microactuator device (2) having a cut face formed by cutting or splitting, the cut face is subjected to anti-release treatment for preventing release of particles produced by cutting. The microactuator device may have a multilayer structure including a plurality of piezoelectric elements and a plurality of internal electrodes alternately laminated. In this case, the multilayer structure has the above-mentioned cut face. It is preferable that the microactuator device is mounted between a base plate (3) to be fixed and a support spring (5) for supporting a head (4), and that the microactuator device and portions of the base plate and the support spring which are adjacent to the microactuator device are collectively coated with a coating film.

Abstract: A stacked-type capacitor with a fuse function for breaking an abnormal current wherein internal electrodes of a same polarity stacked in a ceramic body are led out to an outer surface of the ceramic body through lead-out electrodes. The lead-out electrodes have end surfaces exposed in the outer surface of the ceramic body. A film electrode for fuse function is formed on the outer surface to overlie the end surfaces of the lead-out electrodes and to be connected to an external electrode formed on the ceramic body. The film electrode is made from metallic powder and/or metallo-organic compound paste. The paste can contain powder of glass forming elements.

Abstract: In a microactuator device (2) having a cut face formed by cutting or splitting, the cut face is subjected to anti-release treatment for preventing release of particles produced by cutting. The microactuator device may has a multilayer structure including a plurality of piezoelectric ceramics elements and a plurality of internal electrodes alternately laminated. In this case, the multilayer structure has the above-mentioned cut face. It is preferable that the microactuator device is mounted between a base plate (3) to be fixed and a support spring (5) for supporting a head (4), wherein the microactuator device and portions of the base plate and the support spring which are adjacent to the microactuator device are collectively coated with a coating film.

Abstract: In a multilayer piezoelectric actuator device having a laminated structure (3) of a plurality of piezoelectric elements (3a) and a plurality of internal electrodes (3b) alternately stacked, a pair of external electrodes (5) are connected alternately to said internal electrodes. Each of the external electrodes has an electrode layer (11) and a composite layer (13). The electrode layer is formed on a side surface of the laminated structure. The composite layer is formed on the electrode layer and made of a conductive resin including a conductive material. It is preferable that a carbon paper (7) is placed on the composite layer.

Abstract: An actuator device comprises an actuator element which has a shortest length when no electric voltage is applied and which is increased in length as an electric voltage applied thereto becomes higher, a displacement extracting part 17, and a converter mechanism for carrying out conversion of converting the change in length of the actuator element 11 into the displacement of the displacement extracting part 17. The converter mechanism comprises holders 14 and 13 and a transmission member 16 and carries out the conversion so that the displacement of the displacement extracting part 17 is decreased as the length of the actuator element 11 is increased. The converter mechanism carries out the conversion so that the displacement of the displacement extracting part 17 becomes maximum when the actuator element 11 has the shortest length.

Abstract: A stacked-type piezoelectric actuator includes a rectangular stack body having a plurality of piezoelectric ceramic layers and a plurality of internal electrode layers stacked alternately in a stacking direction. Alternate internal electrode layers disposed in the stacking direction are only exposed in two outer side surfaces of the stack body, while the alternate internal electrode layers are exposed in the other two outer side surfaces of the stack body. Two external electrodes are formed on opposite ones of the four outer side surfaces of the stack body. Thus, alternate internal electrode layers are connected to one of the external electrodes but electrically insulated from the other external electrodes. While the other internal electrode layers are insulated from the external electrodes and are connected to the other one of the external electrodes.