Abstract: An optical waveguide apparatus comprises a substrate (1), a patterned waveguide as a core (4), and an upper cladding layer (10) formed on the substrate. The core is surrounded by a cladding comprising the substrate as a lower cladding layer and the upper cladding layer and smaller in refractive index than the core. The core and the cladding are integrally coupled to each other in a manner such that temperature-dependent expansion or contraction is performed substantially in accordance the characteristic of the cladding. The core and the cladding are made of materials selected so that the variation in optical path length according to the temperature-dependent expansion or contraction of the cladding is canceled by the variation in optical path length according to temperature-dependent variation in refractive index of the core.

Abstract: A communication apparatus includes an antenna, a TDMA/TDD processing unit, a radio unit provided between the antenna and the TDMA/TDD processing unit for data transfer, a telephone directory memory that stores a plurality of telephone numbers divided into a plurality of groups, and a control unit that determines which group in the telephone directory memory an input telephone number belongs to and provides control of whether to notify calling information to a called party via the TDMA/TDD processing unit, the radio unit and the antenna according to the determination result.

Abstract: A communication apparatus includes an antenna, a TDMA/TDD processing unit, a radio unit provided between the antenna and the TDMA/TDD processing unit for data transfer, a telephone directory memory that stores a plurality of telephone numbers divided into a plurality of groups, and a control unit that determines which group in the telephone directory memory an input telephone number belongs to and provides control of whether to notify calling information to a called party via the TDMA/TDD processing unit, the radio unit and the antenna according to the determination result.

Abstract: A clutch disk assembly 1 includes an output rotary member 4, an intermediate member 3, first springs 7, a damper 8, plates 12 and 13, and third springs 5. The intermediate member 3 is disposed radially outside the output rotary member 4. The first springs 7 are arranged between the output rotary member 4 and the intermediate member 3, and are circumferentially compressed when a hub and the intermediate member 3 rotate relatively to each other in a first stage of relative rotary displacement. A damper 8 is disposed between the output rotary member 4 and the intermediate member 3, and includes second springs 10 that are not compressed in the first stage of relative rotary displacement but are compressed in a second stage of relative rotary displacement. The torsion angle corresponding to the second stage is larger than a torsion angle corresponding to the first stage. The plates 12 and 13 are arranged on the axial side of the intermediate member 3.

Abstract: A method for preparing a homogenous fluoride glass containing high purity BaF.sub.2 through the CVD process using a gaseous mixture containing a barium .beta.-diketonate complex service as a first starting material and represented by the following general formula (1) of: ##STR1## where (i) R and R' are each --C(CH.sub.3).sub.3 ; or (ii) R is CH.sub.2 CH.sub.2 CH.sub.3 and R' is --C(CH.sub.3).sub.3 ; or (iii) R and R' are each CF.sub.3 ;a gaseous or vaporizable compound of the metallic element constituting said fluoride glass, the gaseous or vaporizable compound serving as a second starting material; and a fluorine-containing gas serving as fluorinating agent. Further provided is a process for preparing a perform for a fluoride optical fiber which is low in transmission loss, by depositing the fluoride glass over the interior wall of a cylindrical tube or the wall of rod-like glass substrate through the CVD process following by collapsing.

Abstract: According to the present invention, incineration ashes of sewerage sludge are compacted with pressure, but without additives, to have the bulk specific gravity of 0.9-2.5. Since the green compact has sufficient strength and reduced volume in comparison with the incineration ashes before compacting, it enables mass dumping without causing secondary pollution. Moreover, if the green compact is fired to have the bulk specific gravity of 1.4-3.5, both the volume and weight are reduced much more, realizing easy handling of the resulted burned product.

Abstract: Provided is a process for preparing a homogeneous fluoride glass containing high purity BaF.sub.2 through the CVD process characterized in that the used gaseous mixture comprising: a barium .beta.-diketonate complex serving as a first starting material and represented by the following general formula (1) of: ##STR1## wherein R is an alkyl group having 1 to 7 carbon atoms, R' is a substituted alkyl group having fluorine atoms substituting hydrogen atoms and represented by C.sub.n F.sub.2n+1 where n is an integer of from 1 to 3;a gaseous or vaporizable compound of the metallic element constituting said fluoride glass, the gaseous or vaporizable compound serving as a second starting material; and a fluorine-containing gas serving as fluorinating agent.

Abstract: According to the present invention, incineration ashes of sewerage sludge are compacted with pressure, but without additives, to have the bulk specific gravity of 0.9-2.5. Since the green compact has sufficient strength and reduced volume in comparison with the incineration ashes before compacting, it enables mass dumping without causing secondary pollution. Moreover, if the green compact is fired to have the bulk specific gravity of 1.4-3.5, both the volume and weight are reduced much more, realizing easy handling of the resulted burned product.

Abstract: A fluid pressure regulating apparatus comprises a body having a fluid passage to be connected to a machine driven by a pressurized fluid and to a pressurized fluid supplying source. The rotation of a ring member on the outer surface of the body, around the longitudinal center line thereof, responsively moves a regulating member inside the body, so as to vary selectively the pressing force, applied by the regulating member to an urging member sandwiched between the regulating member and an actuator member when the actuator member is moved from a first position to a second position inside the body by an increased urging force of the urging member, a valve body is driven by the actuator member and moved from a closed position to an open position. The valve body is maintained in its open position by the actuator member, to which the increased urging force is applied, against the pressure of the fluid in the passage. When the actuator member is in its first position (i.e.

Abstract: A vice has a base fixed to the worktable of a machine, a slider slidable on the base and a fixing-releasing mechanism for selectively fixing the slider to the base and releasing the slider from the base. The fixing-releasing mechanism is provided with an actuator extending through a large hole formed in the base and engageable with the base and the slider. When not applied by pressurized fluid, the actuator fixes the slider to the base, and when applied by the fluid, it releases the slider from the base for the positional adjustment of the slider. The vice also has a piston-cylinder assembly composed of a cylinder tube and a piston assembly slidable in the cylinder tube and surrounding a lead screw in a telescopic manner. When applied by pressurized fluid, the piston assembly as well as the lead screw advances to move a movable clamp element on the slider towards a stationary clamp element fixed on the slider, for clamping a work between both the clamp elements.

Abstract: A clamping apparatus comprises a clamping unit having a pair of clamping plates and clamping plate drive unit, and a fixing unit for fixing the clamping unit to an arbitrary position on a base frame. The clamping unit has a sub base to which one clamping plate and drive unit for driving the other plate are fixed. The drive unit has a leadscrew fixed at its one end to the other plate, and an outer cylindrical member rotatably provided on the sub base and holding the other end of the leadscrew. An inner cylindrical member and a piston are provided in the bore of the outer member. The inner member is threadably fitted over the other end of the leadscrew, and is rotated integrally with the outer one so as to move the leadscrew for a relatively long distance in the longitudinal direction.

Abstract: A pneumatic structure a part or the whole of which can desirably be put in motion when the pneumatic structure is shaped into, for example, outlines of living things or the like. A spare portion having at least a pair of bending fulcra is formed on the structure main body on the opposite side to a bending direction of the structure, and a length of arc between the respective fulcra of the spare portion is made shorter than 1/2 outer circumferential length of the pneumatic structure containing a set of the respective fulcra, whereby the structure can positively be maintained in a desired state under normal conditions and bending operation thereof can be promptly effected at a large angle by means of small external force.

Abstract: Electromagnetic reciprocating pump including a plurality of pumps combined in such a manner that the mode of connection between the suction inlet and the discharge outlet in each of the pumps is allowed to be changed and, as the result, the amount of suction or discharge or the degree of vacuum or compression is allowed to be selected at a multiplicity of stages without any loss of the energy of the alternating current power. The plurality of pumps are disposed in such a manner that the axes of their respective pistons intersect one another at one point and the pumps themselves are rotationally symmetrical with respect to the point mentioned above.

Abstract: An annular hole cutter including a barrel and cutting teeth attached to a lower portion of the barrel. A portion of a cutting edge of the cutting teeth including hard teeth each having an outer cutting edge formed into a segment which is concentric with respect to an outer circumferential surface of the barrel and an inner cutting edge formed into a segment which is eccentric a slight distance with respect to an inner circumferential surface of the barrel in the radial direction. Eccentric regions of the hard tooth project from the inner circumference of the barrel in the centripetal direction. A gullet is defined between adjacent edges of the cutting teeth for the removal of chips. An inner peripheral surface of the hard teeth located above a stepped portion of the gullets each being formed into a segment which is concentric with respect to the inner circumferential surface of the barrel, and has the same radius of curvature as that of the inner circumferential surface.

Abstract: An instrument for recovering the functions of the carpal joint, the hand and the fingers including a ballonet operatively connected to an air supply for subjecting the ballonet to repeated expansion and contraction by feeding and discharging compressed air thereto. Finger-engaging members being provided on the outer surface of the ballonet. Fastening members being provided on the outer surface of the ballonet for fixation of the carpal joint region and the region adjacent thereto. An individual's hand positioned within the finger-engaging members and the fastening members is extended and fanned as the ballonet is inflated and contracted as the ballonet is deflated.

Abstract: A drilling machine including a spindle and an elevating hollow shaft rotatable in unison with the spindle. An annular cutter is mounted in axial alignment with the hollow shaft and an elevating center drill is mounted in axial alignment with the annular cutter. The drill is movable to descend relative to the annular cutter to initiate the formation of a center hole in a workpiece prior to drilling. The drilling machine further includes a cylindrical member vertically movable and rotatably supported within a holder with the elevating hollow shaft being vertically movable and rotatably supported within the cylindrical member.

Abstract: A sliding member made with amorphous metallic material on the sliding surface. The sliding member has a small coefficient of friction with magnetic tape by constructing the member in this manner together with high hardness. Accordingly, it can prevent magnetic tape from adhering to the member and thus has excellent running characteristic.

Abstract: A process and apparatus for drying or heating a particulate material by means of heat transfer media which is brought into direct contact with the particulate material within a continuously rotating cylindrical drum. The particulate material flows in one general overall direction through the drum and the heat transfer media flows in a generally opposite direction through the drum. The particulate material is subjected to heat treatment by repeatedly coming into direct and immediate physical contact with the heat transfer media in the course of flowing through the drum while it is subsequently separated from the heat transfer media per revolution of the drum.

Abstract: A method for heating a riser of a molten refractory material in which after a heat molten refractory material is poured into a mold, a melt of the molten refractory material at an upper portion of the mold is directly subjected to induction heating by conducting an electric current by application of an AC voltage at a frequency of from 50 to 1,000 KHz to an induction coil with at least 2 windings around the riser portion containing said melt without induction heating the upper portion of the mold.

Abstract: A method for forming a cured resin coating having a desired pattern on the surface of a substrate, which comprisesa first step of applying a coating of an ultraviolet light-curable resin to the surface of the substrate;a second step of pre-curing said coating by irradiating ultraviolet light thereto;a third step of applying a printed layer of a predetermined pattern partly to the surface of the precured coating with a light-insensitive non-transparent printing ink;a fourth step of irradiating ultraviolet light to the product obtained in the third step to cure completely that part of the pre-cured coating on which the printed layer is absent, while that part of the pre-cured coating which exists beneath the printed layer is maintained intact; anddissolving or peeling the printed layer and the pre-cured layer existing beneath it, whereby the resin coating having the desired pattern which is in a complementary relation to the pattern of said printed layer is formed on the surface of the substrate.