Abstract: A combustion chamber of an in-cylinder direct fuel injection spark ignition engine having a pentroof composed of an intake side roof and an exhaust side roof, a piston, and a cylinder. The combustion chamber has a fuel injector provided between the intake side roof and the exhaust side roof inclined toward the exhaust side port, an intake port provided on the intake port side roof at an acute angle with respect to an extended line from the exhaust side roof so as to form a tumble flow of intake air along the exhaust side roof, a piston cavity with a curved surface formed on the top surface of the piston so as to reflect a fuel spray injected from the fuel injector together with that tumble flow in the direction of the intake side roof, and an electrode of a spark plug projected from the intake side roof so as just to collide with the tumble flow.

Abstract: The present invention relates to an improved yo-yo wherein a clutching device is disposed between the shaft and the disks such that the spinning stroke can be prolonged. The yo-yo includes first and second disks that are fixedly connected together by means of a shaft. A bushing is rotationally enveloped onto the shaft and is rotationally disposed within one of the disks. One of the disks is provided with a clutching device that is engaged with the bushing that is rotationally disposed therein by means of a resilient force. Wherein when those disks are spun, the centrifugal force generated thereof will overcome the resilient force such that the bushing will be released by the clutching device and the first and second disks and the shaft will spin independently to the bushing. When the spinning of the first and second disks and the shaft slows down, the clutching device engages the bushing again such that the bushing will spin with the first and second disks and the shaft jointly.

Abstract: A roller gear cam index mechanism including a turret having pairs of adjacent rollers radially arranged on a circumference thereof. Each pair of rollers is engaged between adjacent ribs on a globoidal cam. The angle between the line up direction of every pair of rollers and the tangent direction of the turret circumference is a variable between 0 to 90 degrees. The rollers are modified globoidal rollers which are selected having difference maximum radii and vertex positions.

Abstract: The porous capslues were prepared by mechanical drilling, addition of effervescent to gelatin solution, or purging of inert gas into the gelatin solution. The porous capsules were then hardened by exposure to the cross-linking reagent, or by radiating under the UV, or microwave, or .gamma.-Ray. The usage of these porous gelatin capsules apart for pharmaceuticals extends to veterinary, cosmetic, and nutrient purposes. They are also utilized in the delivering of required beneficial agents to the chemical reactor, environment, and for agricultural purposes.

Abstract: After the release of the application of an attraction voltage to an electrostatic chuck that is attracting a semiconductor wafer, the wafer is pushed upward by lifting pins through only a very small projection distance. Immediately after processing has ended, the temperature of the wafer is several tens of degrees higher than that of the electrostatic chuck so that, if the wafer has detached, the temperature of the rear surface thereof will fall toward the original temperature of the electrostatic chuck. If the wafer has not detached, the temperature thereof will not fall. Therefore, a determination is made as to whether the wafer has detached or whether it is being subjected to residual attraction, based on temperature change data obtained for the wafer in combination with the electrostatic chuck, by a temperature sensor after the wafer has been pushed upward by a very small projection distance. If there is residual attraction, wafer transfer is halted.

Abstract: A device for steering a wheel assembly in a riding mower has a steering sprocket nonrotatably connected to a rotatable steering column and a transmission chain which is flexible in the plane of the steering sprocket and extends over the steering sprocket and forms, on both sides of the steering sprocket, a rectilinear chain run. Two deflecting wheels arranged on both sides of the steering sprocket are positioned in a deflecting wheel plane turned around the respective chain run lines relative to the plane of the steering sprocket. Each of two transmission chains, which extend over the respective deflecting wheels between the free end of the respective chain runs and the wheel assembly, is, between the steering sprocket and the respective deflecting wheels, coupled by way of a link element to the chain, which is flexible in the plane of the steering sprocket, so as to form a straight line with the chain.

Abstract: A plastic container closure having tamper evident properties of a type in which axial breakage means disposed in a tamper evident bottom portion is constituted from a slit continuously extending from the upper end of the tamper evident bottom portion substantially to its lower end. A first high strength bridging portion is disposed on one circumferential side of an upper end of the axial breakage means, while a second high strength bridging portion is disposed on the other circumferential side of the upper end of the axial breakage means, whereby when the container closure is mounted on a mouth-and-neck portion of a container, the tamper evident bottom portion is prevented from being enlarged at a site where its axial breakage means exists.

Abstract: A handwriting storing and reproducing method which takes small images including a leading edge for writing and stores the small images in a time sequential manner following a movement of a writing device. The method then reads out the stored small images and overlaps a just read out small image to a previously read out small image so as to obatain a partial image when both small images include portions which include partial handwritings coincident to one another. Thereafter, the method overlaps one partial image to another partial image-so as to obtain a larger image when both partial images include portions which include partial handwritings coincident to one another.

Abstract: A reverse osmosis drinking water treatment system with a backwashable precise prefilter unit includes a super precise filter, a pressure pump and its automatic control system, a reverse osmosis membrane (or a nano-filtration membrane), a pressure tank, a post filter, and a drinking water dispensing apparatus. In front of the super precise filter, there is an independent backwashable precise prefilter unit. This unit is composed of three filter columns: the first packed with quartz sand, the second with a Cu--Zn alloy of high purity, and the third with sintered microporous PE. A five channel ball valve connects the water supply with the backwashable precise prefilter unit, and then with the super precise filter. The five channel ball valve has three different working positions, namely, a cleaning water position, a discharging water position, and a backwashing position. The useful life of this backwashable precise prefilter unit can be more than three years.

Abstract: In a facsimile apparatus having a facsimile modem function for a personal computer to perform communications through the facsimile apparatus, the changeover between a facsimile mode and a facsimile modem mode is automatically made based on whether an AT command is transmitted from the personal computer or not. When an AT command is received while the facsimile apparatus is in the standby state in the facsimile mode, the operation mode is changed to the facsimile modem mode to execute the command. When no AT command is received within a predetermined period of time after the execution of the AT command, the operation mode is returned to the facsimile mode. In changing the mode, the facsimile apparatus is disconnected from the telephone line.

Abstract: An interactive monitor trouble-shooting device includes a micro-processor based control unit which detects the horizontal synchronization signal and the vertical synchronization signal from the video card of a computer. If no such signals are detected, the control unit displays a series of trouble-shooting steps to be followed by the monitor user for fixing the problem of receiving no such synchronization signals. The trouble-shooting steps may also be displayed in such a manner to test the color display function of the monitor, wherein the monitor screen is divided into at least three sections or areas, each having a background color of one of the three elementary colors. The control unit also allows the monitor to enter a power saving mode when such synchronization signals are cut off during normal operation of the monitor.

Abstract: The sensor is a small-sized vibratory angular velocity sensor, and making use of anisotropic etching characteristics of single crystal silicon substrate, as shown in FIG. 1, four cantilever beams 103 of leading end load (masses 102) type are disposed in a cross form, and the center of gravity (coupling portion 104) thereof is supported by a bridge 105 to form a vibrator, which is excited by electrostatic force by utilizing electrodes 110, 115 formed above and below the end portion of the masses 102, and the angular rate is detected from the capacitance change.

Abstract: A step-separating shearing tool includes a first handle and a second handle. A first blade portion is connected to the first handle, and a second blade portion, which includes an L-shaped slot, is hinge-connected to the first blade portion and to the first handle. A rocker arm connects the second handle and the first blade portion. The step-separating shearing tool also includes an automatic step-separating mechanism. This mechanism includes: a double-oscillating rod, which is hinge-connected to the rocker arm; a slider on the double oscillating rod, which is received in the L-shaped slot of the second blade portion; and a torsion spring connected between the rocker arm and the double oscillating rod. When the shearing tool is used in a cutting operation for cutting items having a relatively small diameter, the slider is located in a short slot portion of the L-shaped slot during the entire cutting operation.

Abstract: Disclosed is an assembly of flexible metal contact bars for a coin-operated path game unit. The assembly includes a fixed supporting block having a rubber-ring-attached shaft frictionally contacting with a driven sliding block having a rubber-pad-attached top. Two electrodes are fixedly attached to the sliding block and extend toward a rotating spiral path in the game unit. When the path game unit is actuated by an inserted coin, the shaft of the fixed supporting block rotates with the rubber ring thereof frictionally contacting with the rubber pad on the driven sliding block to move the sliding block toward the path, so that the two electrodes separately locate above and below the path. The electrode each is formed from at least two metal contact bars flexibly connected to one another by a spring between them, such that the metal contact bar forming a free end of the electrode may bias in any direction to avoid damage when the electrode collides with the path.

Abstract: The present invention provides an image forming apparatus in which paper sheets are not forgotten in a paper discharging section so provided in the main body of the apparatus so as to open toward the front. An operation panel is arranged in an upper part on the front side of the main body of the image forming apparatus 16, and a side space 16 is provided on the right of the operation panel. An operator can visually confirm paper sheets discharged into a paper discharging section from above through the side space. The paper discharging section is in the main body of the image forming apparatus, whereby economy of space can be achieved.

Abstract: A plasma generating gas and a reactive gas are fed into a vacuum container. A magnetic field and microwaves for plasma generation are applied to the vacuum container, whereupon plasma is generated by ECR, and whereupon, for example, an SiO.sub.2 or SiOF film is formed on aluminum wiring. In the initial phase of film deposition, the level of the radio-frequency power for plasma lead-in applied to the stage is adjusted, for example, to zero (first value includes zero) in advance. Then, after the SiO.sub.2 or SiOF film has been deposited to a thickness of tens of nanometers, for example, the radio-frequency power for plasma lead-in is adjusted to a normal power level (second value) and applied to the stage. Thereupon, an intensive anisotropic plasma is generated, and a potential distribution corresponding to the self-bias is formed in the plane direction of the wafer. Since the thin SiO.sub.