Abstract: A valve actuating device is provided which may be employed in fuel injectors for automotive internal combustion engines. The valve actuating device includes an actuator, a large-diameter piston displaced by said actuator, a small-diameter piston operating a valve, a displacement amplifying chamber filled with working fluid to amplify and transmit displacement of the large-diameter piston to the small-diameter piston, and a drain passage. The drain passage communicates with the displacement amplifying chamber through a pinhole for draining the working fluid within the displacement amplifying chamber, thereby enabling the pressure in the displacement amplifying chamber to be released in order to ensure the movement of the small-diameter piston when the valve actuating device is started.

Abstract: This soldering iron cleaning apparatus comprises a main body having an introduction hole, a motor, a sensor mechanism which detects the insertion of the soldering head to the introduction hole and drives the motor, a cleaning member which removes solder remaining on the soldering head, a power transmission mechanism which drives the cleaning member by the driving force from the motor. The power transmission mechanism rotates the cleaning member, by the driving force of the motor, in such a way that the cleaning member scrapes the external surface of the soldering head from the base side to the tip side of the soldering head while turning the cleaning member around the soldering head.

Abstract: A fuel injector is provided which is designed to suppress unwanted vibrations of a nozzle needle-actuating piston, thereby avoiding the injection of an excess quantity of fuel. The fuel injector comprises an actuator and a displacement amplifying chamber filled with fluid to which a large-diameter piston and a small-diameter piston working as the nozzle needle-actuating piston are exposed. The displacement amplifying chamber works to amplify and transmit displacement of the large-diameter piston by the actuator to the small-diameter piston. The fuel injector also includes a stopper which restricts movement of the small-diameter piston toward the displacement amplifying chamber to a given range, thereby suppressing the unwanted vibrations of the small-diameter piston.

Abstract: A method of manufacturing a color filter by dividing a coloring area on a substrate into a plurality of scan areas and applying ink to each scan area from an ink jet head, wherein an amount of ink to be applied to a boundary area between adjacent scan areas is changed from an amount of ink to be applied to an area except the boundary area.

Abstract: A method for manufacturing a color filter including a black matrix having apertures, and pixels obtained by coloring the aperatures on a substrate includes the step of correcting coloring conditions for the color filter based on a distribution of areas of the respective apertures. A liquid-crystal device includes a color filter manufactured by the method, a facing substrate facing the color filter, and a liquid crystal sealed between the color filter and the facing substrate.

Abstract: In an inspecting method of a color filter, comprising irradiating light from a light source to a coloring portion, measuring a transmitting light amount transmitted through the coloring portion by a light receiving element, and calculating a coloring density of the coloring portion, the light amount of the light source is set substantially constant, the amount of incident light received by the light receiving element is adjusted by an optical element arranged within an optical path, the transmitting light amount of an uncoloring portion is measured and the coloring density of the coloring portion is inspected by comparing the transmitting light amount of the coloring portion to the transmitting light amount of the uncoloring portion.

Abstract: An angular rate sensor is provided which measures the angular rate of a moving object such as an automotive vehicle. The angular rate sensor includes an installation base and an oscillator. The oscillator is excited to oscillate in a preselected direction perpendicular to an axis of rotation of the moving object and provides a signal indicative thereof. The installation base is used for installation of the sensor on the moving object and has an improved orientation structure for orienting the oscillator relative to the installation base during installation of the oscillator on the installation base so that the oscillator may oscillate in the preselected direction. The angular rate sensor is disposed within a casing through improved vibration isolators for absorbing unwanted vibrations impinging upon an operation of the sensor.

Abstract: An elevator cab includes an indentation in the shape of the cab. The indentation permits the cab to be compact without compromising the floor area of the cab. In a particular embodiment, the indentation accommodates the presence of a machine in the hoistway when the cab is adjacent to the machine.

Abstract: An automotive seat comprises a seat back and a seat cushion, the seat cushion having a cushioned padding, a covering sheet covering front and middle sections of the cushioned padding, sides cover covering both side sections of the cushioned padding, and a back cover covering a rear section of the cushioned padding, the back cover formed into a predetermined three-dimensional shape utilizing a sheet of fiber impregnated with thermoelastic synthetic resin, the back cover having a body of a substantially C-shape in section and mounting sections provided at both sides of the C-shaped body, each of the mounting sections laminated with a sheet of hard felt serving as a reinforcement and having a through-hole, each of the side covers including a fastener having a body of a substantially square pole-shape projecting forwardly from a front surface of a rear section of the side cover and a pair of stopper pawls, said back covers disposed arranged between the side covers and secured to the side covers by causing fastene

Abstract: An angular velocity detector includes vibrator made of piezoelectric material and having a pair of arms. A pair of driving electrodes are attached to the arms in order to generate vibrations in the arms. A pair of detecting electrodes, which are attached to the arms, detect the vibrations of the arms. Therefore, the pair of driving electrodes can cause the arms to vibrate uniformly and stably, so that a S/N ratio of the angular velocity sensor can be improved.

Abstract: A toothbrush capable of permitting tips of fillings thereof to enter or reach areas such as recesses between teeth, boundaries between teeth and gingivae, and the like to effectively remove dental plaque and the like and exhibit a soft feeling sufficient to prevent damage to gingivae. The toothbrush includes fillings made of a synthetic filament material. The fillings are each formed at both tips thereof into a pointed tapered shape and tied up into a plurality of bundles. The pointed tapered tips of the fillings are each formed with a length of 4 to 8 mm and a non-tapered section of each of the fillings is formed with a maximum diameter of 0.16 to 0.20 mm. Filling setting holes of a filling setting base provided at distal end of a handle of the toothbrush so as to set the bundles of the fillings thereon are formed with a diameter of 1.5 to 2.0 mm and spaced from other holes at an interval of 1.0 to 1.2 mm in the longitudinal direction of the handle.

Abstract: Liquid dentrifice compositions having an abrasive uniformly dispersed in aqueous medium have a low viscosity to maintain flow and stability with the lapse of time. The compositions contain 5-40% of silica or similar abrasive and an optional xanthan gum/polyacrylate binder such that they have a visocity of 20-180 poise at 25.degree.C. and a yield value of 1-60 Pa at 25.degree. C.

Abstract: According to the present invention there is provided a piezoelectric type actuator wherein a compressive force is exerted on a piezoelectric laminate, using a coil spring having a relatively small spring constant and a coned disc spring having a relatively large spring constant, the said compressive force being in the range of 4.0 to 50 in terms of the ratio of the spring constant of the coned disc spring to that of the coil spring.Under the above construction, the performance of the piezoelectric laminate is not deteriorated under any conditions during use, and the size of the piezoelectric type actuator can be reduced.

Abstract: A pilot injection system according to the present invention, which is used in a fuel injection pump, has a casing attached to the pump. The casing connects internally with a pump chamber of the injection pump. A partition wall is fixed in the casing, whereby the pump chamber is divided from the inside of the casing. A movable wall, which is movably located in the casing, divides the inside space of the casing between a fuel-spill chamber and a holding chamber. The partition wall is formed with a valve hole, which connects the pump chamber and the spill chamber. The valve hole has a seat surface which faces the pump chamber. A valve plug, which is located in the pump chamber, can be seated on the seat surface. The valve plug is connected to the movable wall by means of a coupling rod, which extends through the valve hole. Located in the spill chamber is a return spring which urges the movable wall in a direction such that the valve plug closes the valve hole.

Abstract: A disk brake arrangement for a motor vehicle includes a metal backing plate shaped so as to have at each end thereof, a recessed portion. The support, rigidly attached to the motor vehicle, includes peripheral wall portions shaped to fit within a corresponding receased portion of the pad assembly. The cooperation of these portions prevents a rotation of the pad assembly during braking.

Abstract: A dental filling material capable of forming a cured product with improved physical properties comprises a polymerizable monomer to be polymerized upon application, characterized in that the polymerizable monomer comprises a reaction product of two moles of a compound selected from the group consisting of hydroxyalkyl diacrylates and hydroxyalkyl dimethacrylates with on mole of an organic diisocyanate alone or in admixture with another polymerizable monomer. The reaction product may be bis(1,3-dimethacryloyloxy-2-propanetriyl)-N,N'-hexamethylene dicarbamate or bis(1,3-diacryloyloxy-2-propanetriyl)-N,N'-hexamethylene dicarbamate. The reaction product may be used in admixture with trimethylolpropane triacrylate and/or trimethacrylate and (mono-, di- or tri-)ethylene glycol diacrylate and/or dimethacrylate. The reaction product may also be used in admixture with bis-oxyethylenic bisphenol-A diacrylate and/or dimethacrylate and (mono-, di- or tri-)ethylene glycol diacrylate and/or dimethacrylate.

Abstract: An oral composition for caries prophylaxis which comprises a highly soluble stannous compound such as stannous fluoride preferably in an amount of 0.03 to 5% by weight of the composition as stannous tin, a difficultly soluble stannous compound such as stannous pyrophosphate preferably in an amount of 0.05 to 10% by weight of the composition as stannous tin, a phytic acid compound such as sodium phytate preferably in an amount of 0.1 to 20% by weight of the composition, and the pH of the composition being preferably acidic. A portion of the difficultly soluble stannous compound may be in a precipitate form. The oral composition which may be used as dentifrices, prophylactic pastes, dental flosses and the like permits n.sup.2+ ions to exert its effect because the storage stability is high enough to maintain the increased concentration of active dissolved stannous ions in the composition for a prolonged period of time and can render the tooth enamel more resistant to acid attack when applied to teeth.

Abstract: An oral composition for caries prophylaxis which comprises 0.04 to 10% by weight of stannous fluoride and not less than 0.1% by weight of a phytic acid compound, the molar ratio of the phytic acid compound to stannous fluoride being in the range of from 0.01:1 to 4:1 and the composition being acidic, is effective in inhibiting dental caries and shows a prolonged effect after application. The oral composition may be used as mouthwashes, oral bands, topical solutions, cavity sealers, prophylactic pastes, dentifrices, dental flosses and the like.

Abstract: A filler for an .alpha.-cyanoacrylate dental material comprising a silica powder coated with at least one solid catalyst having a weak catalytic activity to the .alpha.-cyanoacrylate. Solid catalysts include amino acids and acid-amide compounds. The dental material is prepared by mixing an .alpha.-cyanoacrylate with the filler. The mixture is applied to the tooth and a setter composition comprising a basic amine compound having a strong catalytic activity to the .alpha.-cyanoacrylate is applied to cure the dental material.