Abstract: A generator unit is installed locally to supply power to an electricity consumer. A management center monitors operation status of the generator unit and monitors the amount of electricity supplied to the electricity consumer by the generator unit. A service company performs maintenance and management for the generator unit based on instructions from the management center or the operation status of the generator unit. An electricity provider operating the generator unit bills the electricity consumer for an electricity supply service fee based on information sent to the management center. The resulting electricity generation equipment management system maintains and manages a generator unit without placing a burden on an electricity consumer, allowing efficient billing and payment of electricity supply service fees.

Abstract: An electronic grand piano comprises a plurality of keys arranged on a keybed, a plurality of actions interlocked with the keys, and an electric circuit unit for performing tone-generation operations based on operations of the actions when the keys are operated. A pair of slide portions, each having an elongated shape, are arranged in parallel and are fixed to outer peripheries of the electric circuit unit. A pair of guide portions are arranged in parallel with respect to a main body of the piano and are loosely engaged with the slide portions. When the electric circuit unit is moved in a prescribed direction relative to the main body, it is automatically stopped and fixed at a prescribed position by means of a fixing structure.

Abstract: An optical position transducer is provided for each of the black/white keys incorporated in a composite keyboard musical instrument; the optical position transducer includes a photo-coupler radiating a light beam, an optical filter moved across the light beam, a recess formed in the black/white key at a proper position where the optical filter is aligned with a target trajectory crossing the light beam and an elastic coupler pressed to an inner surface defining the recess and secured to the optical filter so that a worker assembles the optical filter with the key by inserting the elastic coupler into the recess.

Abstract: An optical position transducer is provided for each of the black/white keys incorporated in a composite keyboard musical instrument; the optical position transducer includes a photo-coupler radiating a light beam, an optical filter moved across the light beam, a recess formed in the black/white key at a proper position where the optical filter is aligned with a target trajectory crossing the light beam and an elastic coupler pressed to an inner surface defining the recess and secured to the optical filter so that a worker assembles the optical filter with the key by inserting the elastic coupler into the recess.

Abstract: A key depression detection apparatus is constituted by a sensor case incorporating key sensors, which can be easily adjusted in positions relative to an arrangement of keys on a keyboard frame (or a keybed) in a keyboard instrument such as a piano. The sensor case has a case body incorporating a key sensor and is affixed to a base member that is fixed to the keyboard frame by using a fixing member, which is constituted by a lower member and a pair of upper members. The legs of the case body are securely held by the fixing member between the lower member and upper members, which are connected together using screws accompanied with springs. Thus, an operator can easily adjust the sensor case in position relative to an arrangement of keys by manually controlling screws.

Abstract: An optical position transducer is provided for each of the black/white keys incorporated in a composite keyboard musical instrument; the optical position transducer includes a photo-coupler radiating a light beam, an optical filter moved across the light beam, a recess formed in the black/white key at a proper position where the optical filter is aligned with a target trajectory crossing the light beam and an elastic coupler pressed to an inner surface defining the recess and secured to the optical filter so that a worker assembles the optical filter with the key by inserting the elastic coupler into the recess.

Abstract: An electronic grand piano comprises a plurality of keys arranged on a keybed, a plurality of actions interlocked with the keys, and an electric circuit unit for performing tone-generation operations based on operations of the actions when the keys are operated. A pair of slide portions, each having an elongated shape, are arranged in parallel and are fixed to outer peripheries of the electric circuit unit. A pair of guide portions are arranged in parallel with respect to a main body of the piano and are loosely engaged with the slide portions. When the electric circuit unit is moved in a prescribed direction relative to the main body, it is automatically stopped and fixed at a prescribed position by means of a fixing structure.

Abstract: A key depression detection apparatus is constituted by a sensor case incorporating key sensors, which can be easily adjusted in positions relative to an arrangement of keys on a keyboard frame (or a keybed) in a keyboard instrument such as a piano. The sensor case has a case body incorporating a key sensor and is affixed to a base member that is fixed to the keyboard frame by using a fixing member, which is constituted by a lower member and a pair of upper members. The legs of the case body are securely held by the fixing member between the lower member and upper members, which are connected together using screws accompanied with springs. Thus, an operator can easily adjust the sensor case in position relative to an arrangement of keys by manually controlling screws.

Abstract: An optical position transducer is provided for each of the black/white keys incorporated in a composite keyboard musical instrument; the optical position transducer includes a photo-coupler radiating a light beam, an optical filter moved across the light beam, a recess formed in the black/white key at a proper position where the optical filter is aligned with a target trajectory crossing the light beam and an elastic coupler pressed to an inner surface defining the recess and secured to the optical filter so that a worker assembles the optical filter with the key by inserting the elastic coupler into the recess.

Abstract: A deionized water producing apparatus includes a pretreatment apparatus having a reverse osmosis apparatus, and an electrodeionization apparatus having a diluting compartment filled with an ion exchanger. In order to disinfect the deionized water producing apparatus, hot water of higher than 80° C. is flown through the pretreatment apparatus, and hot water of higher than 60° C. is flown through the electrodeionization apparatus. Hot water flowing thorough the electrodeionization apparatus is gradually heated at a rate of 0.1-10° C./min.

Abstract: A composite keyboard musical instrument includes an acoustic grand piano, an electronic sound generating system and a silent system, and an electric motor, a hammer stopper, a link work and a controller form in combination the silent system, wherein rigid arms and rigid rods are assembled into the link work so as to promptly transmit the force from the actuator to the hammer stopper without substantial time lug.

Abstract: A generator unit is installed locally to supply power to an electricity consumer. A management center monitors operation status of the generator unit and monitors the amount of electricity supplied to the electricity consumer by the generator unit. A service company performs maintenance and management for the generator unit based on instructions from the management center or the operation status of the generator unit. An electricity provider operating the generator unit bills the electricity consumer for an electricity supply service fee based on information sent to the management center. The resulting electricity generation equipment management system maintains and manages a generator unit without placing a burden on an electricity consumer, allowing efficient billing and payment of electricity supply service fees.

Abstract: A composite keyboard musical instrument includes an acoustic grand piano, an electronic sound generating system and a silent system, and an electric motor, a hammer stopper, a link work and a controller form in combination the silent system, wherein rigid arms and rigid rods are assembled into the link work so as to promptly transmit the force from the actuator to the hammer stopper without substantial time lug.

Abstract: A grand piano has a split top board, i.e., plural sub-boards selectively opened by a pianist for emphasizing higher registered sounds or lower registered sounds and a visual display, which teaches the pianist how to tune the grand piano in the desired mode for selectively emphasizing the higher/lower registered sounds.

Abstract: A high-strength low-thermal-expansion alloy consisting of, by weight, 0.06 to 0.50% C, 25 to 65% in total of one or both of 65% or less Co and less than 30% Ni, and balance of Fe as a main component, other optional elements and unavoidable impurities, and having a primary phase of austenite phase and martensite phase induced by working. A wire is made from the alloy.

Abstract: Low conductivity cooling water for a fuel cell body is obtained by a water treatment apparatus which removes dissolved carbon dioxide gas in the exhaust gas condensate by a decarbonation column. Iron oxide is eliminated from the condensate as well as blowdown water by a MF membrane separator device. Iron ions are removed by a chelate resin column. Deionization occurs with an electrodeionizer which has an internal ion exchange resin.

Abstract: A tool holder holding in a fluid supply hole 3d having an inner diameter a tool 1 having the diameter of identical with or smaller than said inner diameter through a collet 2, wherein a fluid can be supplied from the fluid supply hole 3d to a fluid channel 1c of the tool 1, in the fluid supply hole 3d, a seal block 11 as a regulating means which regulates a flowing amount of the fluid to the fluid channel 1c of the tool 1 and the flowing amount of the fluid to the gap between the fluid supply hole and the tool 1 is provided slidably in the longitudinal direction of the fluid supply hole. The seal block 11 adheres close to the end of the tool 1 due to the fluid pressure in the fluid supply hole 3d and the fluid is supplied to the close adhesion portion, thereby the fluid flowing amount to the channel 1c of the tool 1 can be regulated.

Abstract: An acoustic upright piano, an electronic sound system and a hammer stopper form in combination a keyboard musical instrument for generating acoustic sounds in an acoustic sound mode and electronic sounds in an electronic sound mode, and the hammer stopper has a rotatable shaft extending in a lower space under damper blocks of damper assemblies, cushion members projecting into an upper space over the damper blocks and connecting brackets provided between the rotatable shaft and the cushion members, thereby perfectly interrupting hammer motions before an impact on strings in the electronic sound mode.

Abstract: A granular composition for a ruminant containing as a main component choline or a physiologically acceptable derivative thereof, wherein the composition is prepared by (1) granulating the choline or it derivative having an average particle size of 100 .mu.m or less and a maximum particle size of 150 .mu.m or less, an excipient having an average particle size of 10 .mu.m or less and a maximum particle size of 20 .mu.m or less, and a hydrophobic binder under a relative humidity of 10% or less by using an agitation granulator, followed by cooling, separating and classifying the resultant granules to obtain spherical granules having a particle size of 0.5 to 2.5 mm and (ii) forming a thin film on the surface of the granules at a temperature of at least 5.degree. C. less than a melting point of the binder and 5.degree. C. to 25.degree. C.

Abstract: In construction of a keyboard unit accommodable upright piano, a vertically turnable keyboard is held by a holder unit so that the keyboard unit can be stably held in a horizontal position at one state of the holder unit and easily be accommodated in the main casing at the other state of the holder unit.