Abstract: A magnetic tape cassette and a guide roller in which the magnetic tape can stably travel and the magnetic head can read/write the record correctly, and a method of manufacturing the guide roller are provided. The magnetic tape cassette of the present invention comprises a guide roller 106 rotatably supported by the lower cassette half. The guide roller is almost in the shape of a barrel of which a coefficient of curvature T expressed by the expression [1] representing the extent of curvature of the circumferential surface is in the range between 0.001 and 0.01, and comprises a primary molding and injected resin injected within the primary molding for bulging said primary molding into the shape of said barrel shaped cavity that has a largest diameter at the parting line by the injection pressure.

Abstract: A method for manufacturing a solid structural material using a three-dimensional five-axial woven fabric W. In weaving a three-dimensional five-axial woven fabric W using a three-dimensional weaving machine, divisibly woven sections S1 are formed in portions of a manufactured three-dimensional five-axial woven fabric by alternately driving upper and lower insertion members 2, 3 for inserting a vertical yarn Z from above and below, respectively, in such a manner that each of the insertion members and a weft insertion rapier are driven with different timings.

Abstract: The present invention manufactures a solid structural material using a three-dimensional five-axial woven fabric W. According to the present invention, in weaving a three-dimensional five-axial woven fabric W using a three-dimensional weaving machine, divisibly woven sections S1 are formed in portions of a manufactured three-dimensional five-axial woven fabric by alternately driving an upper and a lower insertion members 2, 3 for inserting a vertical yarn Z from above and below, respectively, in such a manner that each of the insertion members and a weft insertion rapier are driven with different timings.

Abstract: A magnetic tape cassette and a guide roller in which the magnetic tape can stably travel and the magnetic head can read/write the record correctly, and a method of manufacturing the guide roller are provided. The magnetic tape cassette of the present invention comprises a guide roller 106 rotatably supported by the lower cassette half. The guide roller is almost in the shape of a barrel of which a coefficient of curvature T expressed by the expression [1] representing the extent of curvature of the circumferential surface is in the range between 0.001 and 0.01, and comprises a primary molding and injected resin injected within the primary molding for bulging said primary molding into the shape of said barrel shaped cavity that has a largest diameter at the parting line by the injection pressure.

Abstract: A three-dimensional weaving machine that enables biased yarn guide blocks to be reduced in size and their movement to be simplified and that reliably feeds biased yarns is described. A three-dimensional mechanism contains 2N guide blocks (13), each including a biased yarn through-hole (15) extending along the length direction. A guide block receiving and supporting device (18) forms guide block arrangement spaces (S1), (S2), and (S3) in a bottom stage, a middle stage, and a top stage wherein N of the 2N guide blocks can be arranged in each stage parallel with, and adjacent to, one another. A guide block moving device (22) is provided for moving the guide blocks in each stage in opposite directions along the respective stages, and a shifting device (44) operates for simultaneously shifting two adjacent sets of guide blocks movably arranged in the respective guide block arrangement spaces, each by one stage.

Abstract: A method of manufacturing a multi-holed plate made of a composite material wherein a molding resin is filled, with a resin membrane being applied inbetween, in the previously prepared holes of a raw forming element of the composite material and the raw forming element of the composite material is hardened by heat and pressure.

Abstract: A cleaner for cleaning the nozzle portion of a powder filling apparatus for filling a container with powder by equally evacuating the inside and the outside of the container, and dropping powder through the nozzle portion into the container simultaneously with raising the pressure outside the container is provided. The cleaner includes a cleaning head having a cleaning chamber therein for enclosing the nozzle portion airtightly when the cleaning head is fitted to the nozzle portion; a gas passage disposed in the cleaner head for allowing compressed air to flow therethrough so as to spurt the compressed air to the nozzle portion; and an exhaust passage for allowing powder flowing down in the cleaning chamber together with the compressed air spurted to the nozzle portion to be discharged together with the compressed air.

Abstract: A magnetic tape cassette in which a mechanism for engaging a guard panel with a lower cassette half is simplified, the assembly process thereof is highly efficient, and the cassette is produced inexpensively and with excellent productivity. The magnetic tape cassette is constructed such that an engagement hole is formed on the inner surface of a side wall of a guard panel, and an engagement piece is formed on a side of the casette case and defined by a U-shaped slit so as to flex about a proximal end in the left and right directions relative to the cassette case. A locked state releasing projection and an engagement projection extend from the engagement piece. The engagement projection is engaged with the engagement hole when the guard is closed. The locked state releasing projection extends beyond the side wall of the guard panel and is used for releasing the engagement projection from the engagement hole.

Abstract: A method of manufacturing multiaxial thick woven fabrics (8) using healds (3) through which warps are passed, a shuttle (5) reciprocating so as to insert wefts (6) in a warp shedding portion (19) formed by the healds, a reed (9), and a woven fabric removing device (10). A large number of healds are provided in parallel in the direction of woven fabric removal. The shedding portion is formed by passing a plurality of warps so that predetermined thickness and width of the woven fabric are produced through the healds and by widely reciprocating the healds in the width direction, moving the shedding position sequentially from one side to the other side, inserting a weft sequentially in the shedding portion and arranging it by shifting the weft position in the width direction. A texture of the first row of predetermined width and thickness is formed by fixing warps.

Abstract: A magnetic tape cassette includes a slider fitted slidably along a bottom of a cassette case, as well as resiliently locking pieces formed in the bottom of the cassette case along the bottom in a cantilevered fashion and each having a head at a free end thereof for fitting in an engaging hole in the slider so as to retain the slider. Each of the resiliently locking pieces has a compression coil spring provided between the head 12a and an upper half 11a of the cassette case to maintain a resilient force for the head in a thickness-wise direction of the cassette. When the head is pushed into the cassette case by more than a predetermined amount, coils of the compression coil spring are set in a state of close contact with each other in a compressing direction of the spring so as to support the head from an inward direction of the cassette and positionally restrict the displacement of the resiliently locking piece in the inward direction of the cassette.

Abstract: A powder charging apparatus includes a low pressure chamber for accommodating a container to be charged with powder. The low pressure chamber is separable into an upper section and a lower section. A pressure reducer reduces the pressures in the low pressure chamber and the container at the same time. A pressure riser increases the pressure in the low pressure chamber. A powder supplier allows a predetermined quantity of powder to fall into the container under a difference in the pressures between inside and outside the container. The powder supplier includes a hopper having an outlet port. The container has an inlet neck portion engageable with a nozzle secured to the low pressure chamber. The nozzle is connected to the outlet port of the hopper. A buffering member is disposed at a space from the nozzle.

Abstract: A profiled cross-section three-dimensional woven fabric having a plurality of woven, mutually intersecting filaments woven in longitudinal, transverse and vertical planes, with transverse planes of different widths and vertical planes of different height within a cross-section of the woven fabric perpendicular to the longitudinal woven filament planes. The woven filament in the transverse planes moving upward or downward while transversely reciprocating over a width which changes with the width of the woven filaments in each longitudinal woven plane and being disposed between vertically adjacent planes of longitudinal filaments. The woven filaments in the vertical planes moving longitudinally to the height of disposition of the longitudinal and transverse filaments in a plane perpendicular to the transverse filaments and being continuously disposed between longitudinally adjacent layers of transverse filaments, clamping the transverse and longitudinal filaments to unite them together.

Abstract: A powder filling apparatus for filling a container with powder is provided. In the powder filling apparatus, a bottle is carried into a plurality of work units moving around successively. While the work units move to work stations disposed in a circumferential direction successively, the bottle is filled with powder by equally evacuating the inside and the outside of the container and dropping powder into the container simultaneously with raising the pressure outside the container. The bottle filled with powder is then taken out from the work units successively while the work units move around.

Abstract: A mass flowmeter has a U-shaped sensor tube provided on a support base which is supported on a vibration absorbing member, and both ends of the sensor tube are respectively connected to an inlet and an outlet of a manifold. Vibrators are provided at an intermediate part of each straight tube part provided between the inlet and outlet sides of the sensor tube. Pickups are provided on the upstream and downstream sides of each vibrator so as to detect the displacement of the sensor tube. An external vibration is in an opposite direction between the inlet and outlet sides relative to the vibrating direction. Hence, outputs of the pickups located on the upstream sides of the vibrators are added, and outputs of the pickups located on the downstream sides of the vibrators are added. The external vibration is cancelled by obtaining a phase difference of the two added values.

Abstract: A profiled cross-section three-dimensional woven fabric having a plurality of woven, mutually intersecting filaments woven in longitudinal, transverse and vertical planes, with transverse planes of different widths and vertical planes of different height within a cross-section of the woven fabric perpendicular to the longitudinal woven filament planes. The woven filament in the transverse planes moving upward or downward while transversely reciprocating over a width which changes with the width of the woven filaments in each longitudinal woven plane and being disposed between vertically adjacent planes of longitudinal filaments. The woven filaments in the vertical planes moving longitudinally to the height of disposition of the longitudinal and transverse filaments in a plane perpendicular to the transverse filaments and being continuously disposed between longitudinally adjacent layers of transverse filaments, clamping the transverse and longitudinal filaments to unite them together.

Abstract: A cassette casing for a magnetic tape cassette has a casing body and a slider member mounted for sliding motion between a closed position and an open position. The slider member has a pair of guide grooves formed on the outer surface thereof remote from the casing body and extending from a first end of the cassette casing toward the other end, each of the guide grooves having first and second engaging holes which are formed on the bottom of the guide groove to extend through the slider member and open to the inner surface of the same and are spaced from each other in the longitudinal direction of the guide groove. The casing body is provided with a pair of locking projections each of which is resiliently urged toward one of the guide grooves from the inner surface of the slider member and is adapted to be selectively engaged with the first and second engaging holes so that its tip portion projects into the guide groove.

Abstract: Textile structures for producing structural members such as reinforced spars of composite material and a method for producing the textile structures. In the textile structure at least two textile planar members, or plates, are integrally joined together by textile filaments such that the planes of the members intersect each other, at least one member being formed of layers of textile filaments which extend obliquely in at least two directions in a brace fashion with respect to the longitudinal and transverse directions of the member while the remaining members are each formed of layers of textile filaments extending along the longitudinal, transverse and vertical directions of the member.

Abstract: Textile structures for producing structural members such as reinforced spars of composite material and a method for producing the textile structures. In the textile structure at least two textile planar members, or plates, are integrally joined together by textile filaments such that the planes of the members intersect each other, at least one member being formed of layers of textile filaments which extend obliquely in at least two directions in a brace fashion with respect to the longitudinal and transverse directions of the member while the remaining members are each formed of layers of textile filaments extending along the longitudinal, transverse and vertical directions of the member.

Abstract: A magnetic tape cassette casing is formed of upper and lower cassette halves each of which has a rear wall portion extending in the direction of thickness of the casing. The cassette halves are mated together with the top surfaces of the rear wall portions thereof abutting against each other. The cassette casing is provided with a hole defined by recesses formed in the top surfaces of the rear wall portions of the cassette halves substantially at the center between the left and right side ends. The hole is 0.04 to 1.0 mm in width and 2 to 20 mm in length.