Abstract: A surface acoustic wave device which includes a piezoelectric substrate, and an interdigital transducer formed on a planar surface of the piezoelectric substrate, and having first and second bus bars, a first plurality of electrode fingers connected to the first bus bar, and a second plurality of electrode fingers connected to the second bus bar. The first and second plurality of electrode fingers of the interdigital transducer have an electrode cross region in which the first and second plurality of electrode fingers are arranged alternatively. Each boundary between the first and second bus bars and a grating region of the first and second plurality of electrode fingers is arranged such that the boundary is not substantially parallel, with a transmission direction of surface acoustic waves excited by the interdigital transducer.

Abstract: Aluminum is used for the interdigital transducer mounted on a piezoelectric substrate to realize a surface acoustic wave transducer having a small capacity ratio, no spurious resonance, and a low loss. A .theta. rotated Y cut lithium niobate single crystal piezoelectric substrate is used for the piezoelectric material, a metal film of which principal ingredient is aluminum is used for the interdigital transducer, the direction of the interdigital transducer is made parallel to the X-axis of the lithium niobate single crystal, and thick h and electrode pitch P of the interdigital transducer have the following relationship:(.theta.+5).sup.2 /300+11/12.ltoreq.h/P.times.100-8.ltoreq.-0.0001.times.(.theta.+5).sup.3 +0.1625.times.(.theta.+5)+5.5and-30.ltoreq..theta..ltoreq.20.

Abstract: A mask structure has two (or more) groups of device patterns formed on one transparent support plate. Each of the device patterns has a transparent partial pattern. One or both of the groups of device patterns are provided with phase shifting patterns for improvement of the resolution in the lithography. The transparent partial pattern in each of the device patterns in each of the device pattern groups is determined such that each of the transparent partial patterns held by one of the device pattern groups is adapted for combination with one transparent partial pattern held by the other device pattern group by two or more times of transmission of an exposure beam through the mask structure. Manufacturing of solid-state devices is possible by use of the mask structure, in which exposure of a photo-sensitive film on a substrate to an exposure beam through the mask structure is repeated two or more times with a relative position between the mask structure and the substrate being changed.

Abstract: A casing of a stacker is provided with an opening and a chamber for disposing a pusher within the casing adjacent to the opening so that the pusher can be removably attached within the stacker. Also provided in the pusher is a slit-shaped inlet connected with an exit of a passageway within a transporter. By removing the pusher from the stacker and attaching same to another stacker having its compartment of different capacity, bill storing capacity may easily be changed. In malfunction of the pusher, it may easily be exchanged with new one for easy maintenance.

Abstract: A currency stacker is disclosed which a pusher is positioned within a first chamber of a casing. This pusher comprises a base plate, a pusher plate and a link connecting the base plate and pusher plate for traveling the pusher plate from the retracted position within the first chamber to the extended position in a second chamber of the casing toward and away from the base plate. A bill supplied to the first chamber through a slit of the casing is moved by the pusher plate to the second chamber when the pusher plate is moved to the extended position. Disposed within the first chamber is a driver for operating the link to travel the pusher plate between the retracted and extended positions. The driver keeps the pusher in the extended position to prevent unauthorized removal of the bill from the second chamber.

Abstract: An apparatus for currency validation is disclosed in which a belt-pulley arrangement is provided in a housing to transport a bill along a passageway for identification of the bill by sensing the optical or magnetic characteristics of the bill. A lever with notches is mounted for rotation between a protective position protruded within the passageway and a release position retracted from the passageway. When a thin tool is inserted into the passageway, it is engaged with the notches of the lever to prevent movement of the lever from the protective to the release position.

Abstract: A surface acoustic wave device comprises a piezoelectric substrate and a plurality of electrode fingers which are located on the piezoelectric substrate along the propagation direction of a surface acoustic wave. The electrode fingers are located on the piezoelectric substrate at a pitch of about 1.5.lambda.o/2 (where a symbol .lambda.o indicates a wavelength of a surface acoustic wave with a frequency equivalent to the center frequency of the surface acoustic wave device). The width of each of the electrode fingers is about 1.5.lambda.o/4. The electrode fingers are located on the substrate so as to be electrically independent of an external circuit and each other.Since the width of electrode fingers is about 1.5.lambda.o/4, the surface acoustic wave device can be produced without fine processing techniques.

Abstract: An apparatus for currency validation is disclosed which comprises a validator for identifying authenticity of a bill and a stacker for storing bills. The validator includes a lower portion which has a fixing panel secured to an inner panel surface of a support, an upper portion in hinged connection to the lower portion for movement between opened and closed positions, and a belt-pulley arrangement for defining a passageway to guide a bill when the upper portion is in the closed position. The stacker is in hinged connection to the lower portion of the validator for rotation between operative and rest positions. The upper portion of the validator may be moved from the closed to the opened position after the stacker is moved from the operative to the rest position.

Abstract: A surface acoustic wave device comprises a piezoelectric substrate and a plurality of electrode fingers which are located on the piezoelectric substrate along the progagation direction of a surface acoustic wave. The electrode fingers are located on the piezoelectric substrate at a pitch of about 1.5.lambda.o/2 (where a symbol .lambda.o indicates a wavelength of a surface acoustic wave with a frequency equivalent to the center frequency of the surface acoustic wave device). The width of each of the electrode fingers is about 1.5.lambda.o/4. The electrode fingers are located on the substrate so as to be electrically independent of an external circuit and each other.Since the width of electrode fingers is about 1.5.lambda.o/4, the surface acoustic wave device can be produced without fine processing techniques.

Abstract: A method of manufacturing a bar antenna having a magnetic core incorporated therein includes removing a covering material from each end portion of parallel covered cords, the parallel covered cords being separated from each other by a length required for winding on the magnetic core, the portions wherefrom the covering material is removed being connected together. A winding start position is set beforehand so that an end portion of the magnetic core can be matched in position with the winding end of a coil. One cord, a connecting portion and the other cord are wound in sequence consecutively from the start position to the end portion of the magnetic core, starting from the base of the separated portions of the cords, so as to form the coil, and thereafter the coil thus formed is transferred to a prescribed position, while the portions of the parallel covered cords not separated from each other are used as an extension cord as they are.