Abstract: An indirect evaporative cooling apparatus in which a substrate is disposed between a wet channel used to induce an evaporation phenomenon and a dry channel through which cooled air passes, the wet channel and the dry channel are arrayed in layers in an alternating manner, the substrate is cooled by the evaporation phenomenon occurring within the wet channel, substrates that cool the air in the dry channel by heat transfer are layered and disposed, wherein the substrate forming the wet channel and the dry channel is formed by a plastic sheet; a substrate is used in which a plurality of projections are formed as spacers on one side of the substrate of the wet channel and the dry channel, and numerous projections are formed by emboss-patterning on the surface of the substrate on which the spacers are formed and dimples are integrally formed on a back surface.

Abstract: A pipe fitting 10 is used for connecting a large-diameter pipe and a small-diameter pipe each having a flange portion at pipe end. The pipe fitting 10 includes a pair of side pieces 12, a connecting piece 11 and a support portion 15. The side pieces 12 are disposed to face each other, and each has a fitting hole portion 13 in which the flange portions are to be inserted in a state in which the large-diameter pipe and the small-diameter pipe are connected. The connecting piece connects the side pieces 12 at each of end portions. The support portion 15 is formed at each side pieces 12 in a manner to be orthogonal to the side pieces 12 and to be faced each other.

Abstract: A monitor camera transporting apparatus (10) which comprises rails (12) laid along a transportation path of a monitor camera (11), a carriage (21) having the monitor camera mounted thereon and movable along the rails, and transporting means (31) for moving the carriage by means of compressed air. The transporting means includes a pipe (32) provided parallel to the rails and having a slit (32a) formed in its lower part along a full length of the pipe, an internal moving body (34) movable within the pipe by means of compressed air introduced into the pipe, a connecting plate (33) connected at its one end to the internal moving body and externally projected at the other end through the slit to be connected with the carriage, a sealing wire (36) disposed within the pipe along the full length of the pipe to close the slit, and a wire retracting part (37k) formed in the internal moving body or connecting plate for retracting inwardly of the pipe the sealing wire located at the connecting plate.

Abstract: There are provided a pipe (9) having a slit (6) along a longitudinal direction thereof throughout a full length thereof, a moving body (23) inserted into the pipe (9) and being movable in the pipe (9) by means of a compressed air fed into the pipe (9), and a connection member (1) comprising a wire, connected to the moving body (23) in the pipe (9) at a base end thereof, passing through the slit (6) and positioned outside the pipe (9) at a leading end thereof to which a material (15) to be laid or an object is connected. It is preferable that a sealing wire rod (8) which can blockade the slit (6) is arranged in the pipe (9) throughout the full length of the pipe, and that a guide groove (7) for guiding the sealing wire rod (8) so as to blockade the slit (6) at the time of movement of the moving body (23) is disposed on the moving body (23).

Abstract: A dielectric waveguide-type filter is fabricated by vapor depositing or coating all but one of the four sides extending in the axial direction of a six-sided dielectric block that is long in its axial direction lying perpendicular to its width and height with a conductive material and either leaving the fourth side surface open or forming it with a conductive pattern depending on whether the filter characteristics to be obtained are high-pass characteristics, band-pass characteristics or band-rejection characteristics, the conductive pattern, if formed, being formed in a configuration and distribution depending on the filter characteristics to be obtained. A pair of electrode patterns for electrical connection with an exterior circuit are provided by patterning of conductive material on the opposite axial end surfaces of the dielectric block or on the open surface at positions near the opposite axial end surfaces.

Abstract: A compact resonant wave filter capable of selectively propagating an electromagnetic wave of a prescribed frequency with excellent band-pass wave filter characteristics comprises a TM mode resonator disposed perpendicularly to the direction of propagation of electromagnetic wave energy, a pair of TEM mode resonators disposed one on either side or said TM mode resonator in the direction of propagation of electromagnetic wave energy, and a pair of cutoff waveguides disposed one between said TEM mode resonator and each of said TM mode resonators to couple said TEM mode resonator with said TM mode resonators in evanescent mode.

Abstract: A microwave filter having a filtering effect against specific frequencies is fabricated by erecting a second dielectric substrate on the upper surface of a first dielectric substrate, a resonating circuit is formed by locating strip lines facing towards each other on both surfaces of this second dielectric substrate, and the strip lines are connected to input and output lines on the first dielectric substrate.

Abstract: By inserting a rectangular conductive flat member having uninterrupted straight edges into a waveguide in contact relation of their edge portions to the waveguide walls in parallel with an electric field therein, cut-off frequencies at portions of the waveguide to which the conductive flat member is inserted become higher to form a cut-off region. The conductive flat member is composed of a conductor plate or by evaporating a conductive thick film on a dielectric or magnetic plate. The conductive flat member occasionally lined with a non-conductive flat member is provided with circuit elements such as slots formed by punching and strip lines or semiconductor diodes formed by evaporation, and microwave circuits having various functions such as filter circuits, directional couplers, oscillator circuits, frequency converter circuits, frequency multiplier circuits, switch circuits, phase shifter circuits, etc.