Abstract: A semiconductor device formed on an epitaxial substrate includes a high-resistance region in the vicinity of an interface between a doped semiconductor substrate and an epitaxial layer thereon. The high-resistance region is advantageously formed by an ion implantation process of a dopant opposite to a dopant contained in the doped semiconductor substrate such that there is formed a depletion of carriers in the vicinity of the foregoing interface.

Abstract: The present invention provides a lenticular sheet in which cylindrical lens parts including a radiation curable resin are formed on one side of a transparent support, and at least a light-diffusing layer and light-blocking stripes are formed on the flat surface located on the opposite side of said sheet. Cylindrical lens parts with a fine pitch of 0.3 mm or less can be obtained; furthermore, finely pitched light-blocking stripes can be accurately formed in the desired positions.A projection screen constructed by combining the aforementioned lenticular sheet with a Fresnel lens sheet is ideally suited for viewing a liquid crystal projection TV with a high image definition.

Abstract: A computer joystick capable of detecting the position of a control stick in the X and Y directions, as well as the rotational (R) position of the control stick to allow three positional measurements to be made. The joystick uses an optical position detection circuit with a pair of light sources mounted either on the control stick or a printed circuit board mounted beneath the control stick. A photodetector assemble is mounted opposite the pair of light sources to detect light from the light sources. The distribution of the light intensity is indicative of the position of the control stick in the X, Y, and R directions. A single coil spring is used to return the control stick to a resting position when released by the user. The single spring provides an even return force that is dependent on displacement from the resting position. The bottom portion of the control stick moves in a three dimensional arcuate path as the control stick is manipulated by the user.

Abstract: A phase synchronizing apparatus that operates with a low power consumption so as to be particularly suited for use in battery powered data communications situations. The phase synchronizing apparatus receives reception data containing a data code portion synchronous with a transmission clock of a predetermined frequency and produces a reception clock synchronous with the transmission clock. The phase synchronizing apparatus uses a synchronization counter and a compensation circuit to achieve the phase synchronization. The invention can also be implemented as a decoder for decoding data received from a data transmission or as an integrated circuit for data communication.

Abstract: A visual panel comprising a flexible sheet having swollen portions at upper and lower edge portions thereof, respectively, a sheet stretching apparatus for slidably accommodating the swollen portions at the opposing edge portions of the sheet and for stretching the sheet over a frame, and a tension adjusting mechanism for adjusting a tension applied to the sheet.

Abstract: A sheet stretcher (7) comprises a base (7a), which has a hole (17) for slidably receiving an expanded portion (5) formed at an edge of a sheet (2), a slit (18) communicating with the hole (17) and through which the end portion (11) of the sheet (2) continuous to its expanded portion (5) is insertable, a hole (19) for slidably receiving a further expanded portion (5) formed at an edge of a further sheet (2), a slit (20) communicating with the hole (19) through which the end portion (11) of the further sheet (2) continuous to the further expanded portion (5) is insertable.

Abstract: One visual panel 1 is allotted to each of two lanes 3 in such a manner as to cover and conceal from a competitor a lifting device portion of an apparatus for automatically aligning and arranging bowling pins 4 at a distal end of the lane 3 in a bowling alley 2. The visual panels 1 are disposed in a series by being supported by columns 5 rotatably in the direction of A. Each visual panel 1 comprises a frame 6; a flexible sheet 11 having swollen portions 9 and 10 at opposite edge portions 7 and 8; sheet stretching device 12 for slidably accommodating the swollen portions 9 and 10 at the opposite edge portions 7 and 8; and tension adjusting device 13 for adjusting the tension applied to the sheet 11.

Abstract: An apparatus for mounting an advertisement notice, which comprises an attachment (3) provided between a flexible sheet-like advertisement notice (4) and an advertisement medium (1) for detachably mounting the advertisement notice (4) on the medium (1), and a lashing belt (17) with a buckle, provided between the advertisement notice (4) and the medium (1) for adjusting the strained state of the advertisement notice (4), the attachment (3) being so adapted to slidably receive a swell (125) formed on one end of the advertisement notice (4).

Abstract: An apparatus for mounting an advertisement notice, which comprises an attachment (3) provided between a flexible sheet-like advertisement notice (4) and an advertisement medium (1) for detachably mounting the advertisement notice (4) on the medium (1), and a lashing belt (17) with a buckle, provided between the advertisement notice (4) and the medium (1) for adjusting the strained state of the advertisement notice (4), the attachment (3) being so adapted to slidably receive a swell (125) formed on one end of the advertisement notice (4).

Abstract: The present invention pertains to an improvement in buttress-threaded tubular connections. In particular, the connection is improved by controlling the tubular member thread pitch diameter tolerance to .+-.0.0015 inch, to provide a thread bearing contact pressure which is relatively constant over the entire length of the connection. In addition, the improved connection provides a reduction in hoop stress of about 20% over known buttress-threaded tubing connections.The present invention typically includes the use of variable make-up in combination with the control of the tubular member thread pitch diameter tolerance.

Abstract: A combustion gas powered tool includes a member defining a part of cylindrical combustion chamber having an axis. A piston is movable in a direction along the axis of the combustion chamber. The piston defines the combustion chamber in conjunction with the member. A mixture of air and fuel is generated in the combustion chamber. The air-fuel mixture in the combustion chamber is burned to drive the piston. An orifice grille extends in the combustion chamber, and is parallel to the axis of the combustion chamber.

Abstract: A reflective type screen comprising a reflective surface layer a polarizing plate layer located in front of said reflective surface layer and a diffusion layer located in front of the polarized plate layer, wherein the reflective surface layer, the polarizing plate layer and the diffusion layer are laminated together using an adhesive to form an integral structure is disclosed. In addition, a reflective type screen comprising a reflective surface layer subjected to mirror-surface processing and laid on a flexible substrate, a polarizer and a diffusion layer arranged for covering the polarizer therewith wherein the reflective surface layer, the polarizer and the diffusion layer are laminated together using an adhesive to form an integral structure is disclosed.

Abstract: A combustion gas powered fastener driving tool includes inlet and outlet openings through which the combustion gases are discharged from a combustion chamber. These openings are located above the uppermost driving position (top dead center) of a slidable piston, so that an air and fuel mixture is fully trapped in the combustion chamber until after it is combusted. Since an outflow of the unburnt air and fuel mixture is completely prevented, the rate of fuel consumption of the fastener driving tool is high and there is no danger of accidental explosion of unburned fuel even when the fastener driving tool is used in a badly ventilated working place or site. An electric fan for forcing fresh air into the combustion chamber is disposed outside the cylinder and isolated from high temperatures. The fan is durable in structure and reliable in operation.

Abstract: An advertising device for detachably attaching a flexible sheet-like advertising bill. The device comprises a flexible sheet member on which the advertising bill is disposed. An expansible member is disposed in an intermediate portion of the sheet member. The advertising bill is detachably fastened to the sheet member by a fastener comprising a pair of fastening elements, namely a first element and a second element. The first element is secured to the sheet member. The second element is secured to the advertising bill. The first and the second elements cooperate with each other to fasten the advertising bill to the sheet member. The peripheral edge of the sheet member is connected to an advertising place. And an adjuster is provided for adjusting a state of tension of the sheet member.

Abstract: In the production of a tunneling probe tip having a sharp point by utilizing electropolishing, the present invention has enabled the production of a platinum tunneling probe tip always produceable in an identical conical form having high point sharpness without scattering in the shape caused by the anisotropy of crystal face with respect to the rate of polishing during polishing of a platinum material through adoption of a two-stage polishing process, which comprises subjecting a platinum tunneling probe tip material to a primary polishing for primary shaping of the tunneling probe tip material into a tunneling probe tip form, and then subjecting the shaped material to a secondary polishing for sharpening of the point with a mixed acid comprising sulfuric acid, nitric acid, and phosphoric acid.

Abstract: The invention relates to a method of making permanent magnets, especially rare-earth ion permanent magnets composed of compacted Fe-B-R type alloy particles. Accordingly, the method provides compacting the magnetic particles into a desired shape having voids between some of the compacted particles. The voids between the particles are filled with a sealing agent and the compact is further coated with either an organic coating or metallic coating.

Abstract: A color original is picked up by a pickup head and B, G, and R image signals are obtained and supplied to a color process circuit including masking correction, under-color removal, and gradation correction circuits. Y, M, C, and K image signals output from the color process circuit are supplied to an exposure head to form a color separation plate. A print simulation unit having first and second frame memories is connected in parallel with the color process circuit. The B, G, and R signals are also written into the first frame memory. The signal read out from the first frame memory is supplied to the color process circuit and is color-corrected. The output from the color process circuit is written into the second frame memory and output to a color monitor. The second frame memory stores two frames, and can display both frames on the color monitor for comparison.

Abstract: A transmission electron microscope for irradiating a specimen with an electron beam, wherein the electron beam passed through the specimen is imaged on an imaging screen by a magnifying lens system. The electron microscope includes a deflector for deflecting the electron beam to thereby scan a specimen with the electron beam, and a memory for storing a range within which the specimen is to be preliminarily scanned with the electron beams and the number of scans to be performed. The specimen is preliminarily scanned with the electron beam within the preliminary scan range for the number of times on the basis of the corresponding data read out from the memory.

Abstract: A silhouette cutting apparatus includes a two-dimensional image scanner for reading a color separation film, a frame memory for storing a read image signal, a CRT display for displaying an image of any color separation film selectively output from the frame memory, a pointer for displaying a cross mark at one point in a desired figure in a displayed image, a latch for latching color or brightness of a displayed point of the cross mark, a comparator for comparing the data from the latch with color or brightness of all other points of image signals of any separation film selectively output from the frame memory and detecting silhouette image information of the desired figure in accordance with whether or not their difference exceeds a predetermined value, and a cutting plotter for cutting a peel-off film in accordance with the detected silhouette image information.