Abstract: A steam turbine having a fork-type joint structure is provided that secures sufficient strength for endurance of stress corrosion cracking, low-cycle fatigue, and high-cycle fatigue, and extends an operating life while making it possible to endure long-term operation. The turbine includes a rotor having a plurality of rotor forks rowed in an axial direction; a turbine blade having blade forks arranged in the axial direction of the rotor, the blade forks engaged with the rotor forks; a plurality of pin holes whose positions are different from each other in the radial direction of the rotor; and a plurality of fork pins inserted into the plurality of pin holes in the axial direction of the rotor. A clearance exists between an inner diameter of the pin hole of the blade fork and a diameter of the fork pin, the clearance varying depending on positions in the axial direction of the turbine.

Abstract: In a liquid level sensor according to the present invention, a first detecting electrode being always in a liquid to be measured, a second detecting electrode which measures a level of the liquid to be measured, and a third detecting electrode being always out of the liquid to be measured are arranged, an operation of charging capacitor 45 for a time being in proportion to a ratio of a length of a part of the second detecting electrode in the liquid to be measured to a total length of the second detecting electrode and an operation of discharging the electric charge of the capacitor for a time being in proportion to a ratio of a length of a part of the second detecting electrode being out of the liquid to be measured to the total length of the second detecting electrode is repeated. With this configuration, the liquid level can be precisely detected without arranging a complex operational device even though a dielectric constant or a temperature of the liquid to be measured changes.

Abstract: A steam turbine having a fork-type joint structure is provided that secures sufficient strength for endurance of stress corrosion cracking, low-cycle fatigue, and high-cycle fatigue, and extends an operating life while making it possible to endure long-term operation. The turbine includes a rotor having a plurality of rotor forks rowed in an axial direction; a turbine blade having blade forks arranged in the axial direction of the rotor, the blade forks engaged with the rotor forks; a plurality of pin holes whose positions are different from each other in the radial direction of the rotor; and a plurality of fork pins inserted into the plurality of pin holes in the axial direction of the rotor. A clearance exists between an inner diameter of the pin hole of the blade fork and a diameter of the fork pin, the clearance varying depending on positions in the axial direction of the turbine.

Abstract: In a liquid level sensor according to the present invention, a first detecting electrode being always in a liquid to be measured, a second detecting electrode which measures a level of the liquid to be measured, and a third detecting electrode being always out of the liquid to be measured are arranged, an operation of charging capacitor 45 for a time being in proportion to a ratio of a length of a part of the second detecting electrode in the liquid to be measured to a total length of the second detecting electrode and an operation of discharging the electric charge of the capacitor for a time being in proportion to a ratio of a length of a part of the second detecting electrode being out of the liquid to be measured to the total length of the second detecting electrode is repeated. With this configuration, the liquid level can be precisely detected without arranging a complex operational device even though a dielectric constant or a temperature of the liquid to be measured changes.

Abstract: A method and an apparatus for producing a product having a magnetically formed pattern, capable of forming any desired pattern in diversely different shapes with a clear visual recognizability, at high speed, by a simple procedure, and a painted product produced by these method and apparatus. The product is produced by forming a paint layer from a paint medium mixed with magnetic non-spherical particles, and applying a magnetic field containing the lines of magnetic field in a shape corresponding to the desired pattern to be formed.

Abstract: A process for preparing an aromatic polycarbonate resin from an aromatic dihydroxy compound and a carbonate diester by transesterification in the presence of a transesterification catalyst comprising; reacting a purified carbonate diester with an aromatic dihydroxy compound in the presence of a transesterification catalyst to form a polycarbonate prepolymer; said carbonate diester containing benzophenone and benzoate ester derivatives having a molecular weight of less than 1,000, each in an amount of 100 ppm or less, said polycarbonate prepolymer having a viscosity average molecular weight of 5,000 to 20,000 at a temperature of 140.degree. to 280.degree. C., the reaction pressure being from 0.1 Torr to normal pressure; polymerizing said prepolymer at a temperature of 240.degree. to 350.degree. C. in a lateral, bi-axial, self-cleaning reactor to obtain an aromatic polycarbonate resin having a viscosity average molecular weight of 15,000 to 60,000.

Abstract: Disclosed herein is an aromatic polycarbonate resin containing benzophenone and benzoate ester derivatives which have a molecular weight less than 1,000, each in an amount of 100 ppm or less. Also disclosed is a process for preparing an aromatic polycarbonate resin from an aromatic dihydroxy compound and a carbonate diester in which the benzophenone derivative content is 100 ppm or less by transesterification, comprising preparing a polycarbonate prepolymer having a viscosity average molecular weight of 5,000 to 20,000 using an iminocarboxylic acid or salt thereof as a transesterification catalyst and polymerizing the prepolymer in an extruder.The aromatic polycarbonate is colorless and transparent and is suitable for extrusion molding.

Abstract: A method and an apparatus for producing a product having a magnetically formed pattern, capable of forming any desired pattern in diversely different shapes with a clear visual recognizability, at high speed, by a simple procedure, and a painted product produced by these method and apparatus. The product is produced by forming a paint layer from a paint medium mixed with magnetic non-spherical particles, and applying a magnetic field containing the lines of magnetic field in a shape corresponding to the desired pattern to be formed.

Abstract: A synthetic resin window, e.g. for automotive vehicles, includes a window body member in the form of a sheet of transparent or semi-transparent synthetic resin, a hard coated layer covering and fusion-bonded to at the outer surface of the window body member, a frame member of a synthetic resin formed integrally with the body member to extend along a peripheral edge thereof, and connection between the frame member and the outer surface of the window body member. The connection may include a core element which is integrally connected to the window body member in a form-locking manner from outer and inner sides thereof, and at least partly embedded in said frame member. Alternatively, the connection may include bare surfaces of the synthetic resin forming the window body member, which are not covered by the hard coated layer and which are directly adhered to the frame member by an adhesive agent.