Abstract: Transfer machine, intended for transferring loads (K), especially containers, wherein the transfer machine comprises a frame (R) equipped with a wheelwork (P); a horizontal support plane (1) located in connection with the frame (R) for supporting the load (K) during the transfer, and a vertical transfer apparatus (S) for lifting the load (K) on the support of the support plane (1) and off the support of the support plane (1), wherein the vertical transfer apparatus (S) is arranged to lift and lower loads (K) from the side of the transfer machine and thereby from the side of the support plane (1). The vertical transfer apparatus (S) of the transfer machine is placed in connection with the frame (R) on the first side of the support plane (1), and the vertical transfer apparatus (S) is arranged to reach over the support plane when lifting or lowering the load (K), in order to move the load (K) onto the support plane (1) or off the support plane (1) from the second side of the support plane (1).

Abstract: A Bulk Mail Container (BMC) unloader uses a simple crossed four bar-linkage to move a predetermined point on a BMC unloader in a substantially straight line while the overall BMC unloader rotates about that predetermined point so as to upend the BMC container. This takes advantage of the crossed four-bar's substantially straight-line motion over a limited range of its motion, as well as the rotational motion of the particular unloader link disclosed herein. This is advantageous for unloading. In use, a BMC container is simply rolled into the BMC unloader, and the entire combination of the BMC container and BMC unloader is then actuated to produce substantially straight line motion along a suitably selected “center” point of the BMC unloader while the overall combination rotates about the center point so as to upend the BMC for unloading.

Abstract: An object of the present invention is to enable the orientations of chip components accommodated in groove portions of an index table to be assuredly uniformized. When a polarity judgment device finds that the orientation of the chip component accommodated in the groove portion of the index table is opposite, the polarity inversion apparatus according to the present invention moves the chip component to the component accommodating inversion portion by using compressed air and the intake air from air inlet/outlet ports. Since the bottom surface of the inlet of the inversion portion is set so as to be lower than the base surface under the index table and the width of the inlet of the inversion portion is set so as to be wider than the width of the groove portion, the chip component can move to the inversion portion without getting stuck in the vicinity of the boundary.

Abstract: A steam-powered rotary engine is provided in which a rotor arm assembly and an outer ring are positioned such that steam ejected from outlets at the two ends of the rotor arm assembly will impact at a substantially right angle onto steps or depressions formed on the inner portion of the outer ring. Both the rotor arm assembly and the outer ring are mounted or supported in a freely rotatable manner on a housing or frame. The ejection of the steam from the rotor arm causes the rotor arm to rotate in a direction opposite the direction of travel of the exiting steam. The reaction of the steam impacting the steps causes the outer ring to rotate in a direction opposite the direction of rotation of the rotor arm. Power take-off devices are provided to use the rotational movement of the rotor arm and the outer ring to generate electricity.

Abstract: Gas turbine steam passage seal structure between a blade ring and a stationary blade absorbs thermal deformation to prevent occurrence of minute gaps to thereby reduce leakage of steam as cooling medium. A blade ring steam passage hole, provided in the blade ring (10), has a stepped portion formed in a middle portion thereof. A stationary blade steam passage hole, provided in the stationary blade (50) so as to oppose the blade ring steam passage hole, has a stepped portion formed in an outer peripheral portion thereof. A cooling steam supply passage connection portion is constructed comprising a seal pipe (25) provided between the blade ring and stationary blade steam passage holes so as to communicate them with each other and a seal urging guide device (44, 47) provided at each of the stepped portions of the blade ring and stationary blade steam passage holes so as to effect a seal while fixedly supporting the seal pipe (25).

Abstract: A cooled turbine blade (either a rotor blade or a stationary vane) comprises a blade structural member whose primary function is to withstand the various loads exerted on the blade and maintain structural integrity of the blade, and a heat-transfer sheath that surrounds the outer surface of the structural member. A plurality of coolant passages are formed between the structural member and the heat-transfer sheath. Thus, when coolant is passed through the coolant passages, the heat transferred to the sheath from the hot gases passing through the turbine is in turn transferred to the coolant, which is then removed from the blade, thereby cooling the blade.

Abstract: The present invention relates to a bleed deflector for a gas turbine engine. The bleed deflector comprises an inlet portion for receiving bleed air from the engine, a perforated top plate for discharging the bleed air into a duct, and an aerodynamically shaped strut for positioning the perforated top plate above an inner wall of the duct to allow dilution air to flow beneath the top plate.

Abstract: The knife edge air seal ring of a gas turbine is modified to receive a replacement or second seal ring portion having a wire brush seal. The replacement or wire brush air seal ring is mounted with the existing knife edge air seal mounting ring at a location so that the existing mounting ring may be used, while providing adequate strength and structural support for installation of the second, wire brush seal ring. The replacement seal ring may be provided with knife edge seals as well, if desired.

Abstract: A rotation device including first and second passages and a rotor shaft with a rotor which connects onto the first passage with a third passage which branches into rotor channels from the third to a fourth passage. The end zones of the third and fourth passages extend axially. The rotation device has a stator including a first central body with an outer surface which co-bounds a passage space with stator blades which have on one end zone forming a fifth passage a direction differing from the axial direction and on another end zone forming a sixth passage a direction differing little from the axial direction. The fifth passage connects onto the fourth passage and the sixth passage connects onto the second passage. The stator includes a second central body where between the sixth passage and the second passage extend manifold channels bounded by the second central body and the housing.

Abstract: An adjustable and stable pre-loading device equipped fan includes a stator, a first rigid spacer, a first bearing, an elastic device, a second bearing, a second rigid spacer, a rotor and a shaft. Among these, the stator includes a receptacle. The first bearing is formed on the first rigid spacer in the receptacle. The elastic device is formed in the receptacle and further on the first bearing. The second rigid spacer is formed on the second bearing on the elastic device. The rotor is coupled to the stator and has a blade structure. The first rigid spacer compresses the elastic device by means of the first bearing. The second rigid spacer compresses the elastic device by means of the second bearing. The distance between the first rigid spacer and the second rigid spacer is adjustable, thereby altering pre-loading applied on the first bearing and the second bearing.

Abstract: A platelike projecting component portion of a component used in gas turbines or other similar applications includes a surface upon which hot gas acts and cooling bores through which a cooling medium is capable of flowing. Effective cooling is achieved by providing at least one plenum assigned solely to the component portion. The plenum is arranged so as to be directly adjacent to the surface upon which hot gas acts and through which the cooling medium is capable of flowing to provide convective heat transfer. The cooling bores are designed as blow-out orifices which emanate from the plenum and issue the cooling medium onto the surface upon which hot gas acts, thereby forming a cooling film.

Abstract: A cast gas turbine blade through which coolant flows, includes a blade root inserted into a disk of the gas turbine; a plurality of supply ducts; and a distribution space. Coolant is fed to the supply ducts through. a feed duct of the disk, the feed duct communicating with the supply duct via the distribution space. Flow and manufacture are optimized by a cast distribution space being present which has rounded or beveled inlet openings for the supply ducts and which is manufactured by means of a one-piece casting core.

Abstract: A fan having stable pre-loading device includes a stator, at least one bearing, a rotor having a blade structure, a shaft and a rigid spacer. Among these, the bearing is formed in the space of the stator. One terminal of the shaft is coupled to the stator. The elastic device is formed on the bearing. The rigid spacer is formed on and thus compresses the elastic device. Another terminal of the shaft passing the rigid spacer as well as the elastic device is coupled to the inner ring of the bearing.

Abstract: A cooling fan (10) includes a plurality of blades (12) molded about a central hub plate (11) at an annular molded ring (13). A plurality of helical gussets (30) are formed on inlet side (25) of the molded ring (13) at the blade root (15) that are spaced apart to define flow gaps (32) therebetween, and are curved to substantially follow the airflow path through those gaps (32). A like plurality of radial ribs (40) may be formed at the outlet side (26) of the fan (10) that can include an indented stacking surface (41) that engages a contact surface (42) on the inlet side (25) to facilitate stacking of multiple fans. In another aspect, the fan blades (10) are configured to include elliptical or parabolic camber lines (C) that vary along the radial length of the blade so that the blade stacking, or the centers of gravity (CG) of radial blade segments, achieve a predetermined alignment under normal operating loads to minimize bending moments between blade sections.

Abstract: A vortex generating apparatus has the capability of attracting and removably adhering one or more solid objects. The apparatus comprises an impeller housed within a shell. The vortex attractor generates a vortical fluid flow generally in the form of a helical or spiral shaped flow. The fluid flow creates a low pressure region extending from the impeller end of the device. This low pressure region is contained by the walls of the fluid flow, thus directing the attractive forces toward a surface and minimizing effects of ambient fluid on the system. When the surface is part of a stationary object, wall, floor or ceiling, the vortex attractor may move toward and adhere to the surface. When the surface is part of a movable object, the vortex attractor may attract the object and maintain the attracted position.

Abstract: The invention relates to a turbo-machine (1) comprising a rotor (25) that extends along a rotational axis (15). Said rotor (25) has a peripheral surface (31) which is defined by the outer radial delimitation surface of the rotor (25) and has a receiving structure (33) as well as a first moving blade (13A) and a second moving blade (13B). Each moving blade comprises a blade footing (43A, 43B) and a blade platform (17A, 17B). The blade platform (17A) of the first moving blade (13A) and the blade platform (17B) of the second moving blade (13B) border one another, and a gap (49) is formed between the blade platforms (17A, 17B) and the peripheral surface (31). A sealing system (51) is provided in the gap (49) on the peripheral surface (31).

Abstract: A propeller fan adapted to prevent abnormal air flow to thereby increase discharge of air flow but to decrease noise, the fan including a plurality of vanes, each vane fixed at a hub secured at a rotary axle, having a predetermined length toward external radial direction thereof and circumferentially spaced out at a predetermined gap, wherein each van has a cross-sectional shape like a flat surface at an external side of a leading edge thereof while an external side of a trailing edge thereof is bent with a predetermined radius of curvature (Rc).

Abstract: A turbine blade is provided with a bracket arranged in the tip region of the blade and projecting beyond the blade profile. The bracket is formed merely in a section of a surface region of the pressure side, the surface region being enclosed by an imaginary chord bearing against the pressure side of the blade body both in the region of the leading edge and in the region of the trailing edge.

Abstract: A pump control system incorporates a programmed processor and respond to input from multiple floats. The programmed processor can respond to detected float failures in real time by reassigning control, lag, or lead functions from a failing float to one of the remaining functioning floats. Pump alternating functionality can be provided if any two of a plurality of four or more floats continue to function as expected.

Abstract: A heat-dissipating fan structure comprises a frame having a through-hole. An air inlet and an air outlet are respectively defined in two ends of the through-hole. A support section is provided in an end of the through-hole and at least two sets of windings are engaged on the frame. An IC control member is mounted on the frame and electrically connected to the windings. A rotor comprises a shaft and plural blades, and a permanent ring magnet is mounted around the blades. An end of the shaft is rotatably received in the support section of the frame. A repulsive magnetic force is directly created between the permanent ring magnet and the windings of the frame to drive the rotor to turn.

Abstract: Disclosed is a circuit for driving a linear compressor enabling to reduce a cost in detecting voltage and current applied to a linear compressor by decreasing the number of precision resistors.

Abstract: A self-aligning cartridge pump 10 is provided including a pumping mechanism 24, a curved upper plate 30, and a retaining ring 32. The curved upper plate 30 is in communication with the retaining ring 32 such that the self-aligning cartridge pump 10 can pivot into proper alignment.

Abstract: The object of the present invention is to offer an electric type swash plate compressor which is compact and reduced in weight and lightened, and which can efficiently cool down a motor chamber and a crank chamber. The compressor has an electric motor and a swash plate, which are respectively accommodated in the motor chamber and the crank chamber. In the compressor a communication route, which communicates a part except the discharge chamber communicating with an external refrigerant circuit in an inner refrigerant circuit within an outer casing with the motor chamber, is formed. The communication route is formed so as to pass through the crank chamber, and the refrigerant in lower temperature and lower pressure than discharge refrigerant is supplied into the motor chamber and the crank chamber. Accordingly, the improvement of cooling efficiency and the reduction of pressure resisting strength of the casing can be performed.

Abstract: A heating and pumping device for liquids, in particular for water of aquariums, the device comprising a pump (24) having a pump body (32) and a thermo-heating element (26) having a thermo-heating body (60). There is a casing (22) which contains both the pump (24) and the thermo-heating element (26) such that a passage section (102) for water is defined between the thermo-heating element (26) and the casing (22). To seal the electrical parts of the thermo-heating element (26) and to prevent damage, a sole sealed zone (100) filled with resin is created between the pump body (32) and the thermo-heating body (60). This resin filled sole sealed zone (100) obviates the need for using other less effective sealing elements and gaskets.

Abstract: A pump having a main pump body including a casing to which a fluid is supplied, and a pump section, an input valve section, and an output valve section which are provided opposingly to one surface in the casing. Each of the pump sections, the input valve section, and the output valve section has an actuator section. The input valve section, the pump section, and the output valve section are provided opposingly to the back surface of the casing for selectively forming a flow passage on the back surface of the casing in accordance with selective displacement action of the input valve section, the pump section, and the output valve section in a direction approaching or separating from the back surface of the casing. The fluid is controlled for its flow in accordance with the selective formation of the flow passage.

Abstract: It is an object of the present invention to provide a high-efficiency linear compressor in which even if a compression chamber is defined utilizing an inner space of the linear motor to reduce its size, an amount of heat transmitted from the linear motor to the compression chamber can be reduced by forming a space between the linear motor and a cylinder which defines the compression chamber. The linear compressor comprises a cylinder having a flange and a cylindrical portion supported in a hermetic vessel by a support mechanism, a piston movably supported in the cylindrical portion along an axial direction thereof, a spring member applying an axial direction to the piston, and a linear motor having a stator fixed to the flange of the cylinder and disposed around an outer periphery of the cylindrical portion and a moving member coupled to the piston, wherein a space is formed between the stator and the cylindrical portion.

Abstract: A positive displacement pump is composed of a first actuator for relatively moving a piston and a housing, a cylinder for accommodating the piston, and a second actuator for relatively moving the cylinder and the housing.

Abstract: A counter-rotating axial flow fan for cooling electronic components comprising two or more impellers with narrow chord blades. At least one impeller rotates in a first direction and at least one impeller rotates in a second direction opposite to the first direction. The blades of the impellers are configured so as to cause air to flow in the same axial direction. The air flow generated by this counter-rotating fan is substantially greater than the air flow of an otherwise identical co-rotating fan.

Abstract: A vertical pump which has a rotating body having an impeller arranged with its axial center being vertical, and a cylindrical rotor fixed to an upper portion of the impeller with their axial center being, aligned with each other. A main portion of the cylindrical rotor is composed of a good conductor. A casing for housing the rotating body with a gap rotatively and a rotary magnetic field generator facing the cylindrical rotor for applying a rotational force, to the cylindrical rotor are provided. As a result, the rotating body including the impeller and the cylindrical rotor is rotated without contacting with the casing.

Abstract: In its unstressed state, a suction valve is spaced from its valve seat such that the suction valve must be deformed against its inherent spring force in order to achieve seating. The spring force due to deformation provides an opening bias to the suction valve such that it opens earlier in the suction stroke and offsets the effects of adhesion due to the presence of oil between the seating surface and the valve.

Abstract: The present invention is directed to an apparatus and method for determining vane wear in rotary vane pumps that operate using slideable vanes. A view port is formed in an end of the pump housing. The view port is dimensioned such that a width of the port represents a predetermined amount of vane length loss. The view port is positioned in relation to the slots such that an end of the vane not in engagement with the wall of the pump will appear in the port only after a predetermined amount of vane loss occurs, and relative to the slots and the vanes to allow a determination of vane length for each vane when the vane is in engagement with the wall.

Abstract: An improved structure for a fixed turbine assembly in a compressor by having provided in the inner edge of a fixation block vertically disposed on the housing, a corresponding second channel in the outer edge of the fixed turbine, and a retainer simultaneously inserted between both channels to restrain and form a link for the fixed turbine and the housing thus to secure the fixed turbine and present it from turning.

Abstract: An abrasion resistance structure of a scroll compressor is provided. In the abrasion resistance structure, including a main frame penetrated by a driving shaft combined with a rotor of a driving motor and supported in a radius direction, a fixed scroll fixed to the main frame, and an orbiting scroll put on the main frame, eccentric-combined with the driving shaft so as to be in an orbiting motion, and forming compression pockets together with the fixed scroll while continuously moving in a state of being geared with the fixed scroll, concavely inclined portions are formed on the back surface of an end plate of the orbiting scroll facing the upper surface of the main frame and on the upper surface of the main frame. Accordingly, it is possible to prevent abrasion between the orbiting scroll and the main frame due to the thermal deformation of the orbiting scroll during the operation of the compressor.

Abstract: A compressor assembled under desirable working conditions at a low cost is disclosed. In the compressor, the first rolling bearing for permitting axial movement of the shaft is inserted into the first housing from the side where the compression mechanism is to be provided, and the second rolling bearing for restricting axial movement of the shaft is inserted into the first housing from the other side where the driving source is to be provided. The shaft is inserted into the first housing from the side where the compression mechanism is to be provided. A seal member is further provided between the rolling bearings for sealing an area between the insertion hole and the shaft, wherein the seal member is inserted into the insertion hole of the first housing from the side where the compression mechanism is to be provided before the shaft is inserted into the insertion hole.

Abstract: A geared feed pump has a rotatably driven pair of meshed gears (16, 19) arranged in a pump chamber (14) of a housing (10, 12). The feed pump supplies fuel from a suction chamber (16) between the peripheries of the gears (16, 18) and the peripheral walls (15) of supply channels (30) formed in the pump chamber into a pressure chamber (28). One of the gears (16) has a hole (32) and is secured onto the drive shaft (22), which is rotatably positioned in the housing (10). At least one radially, resilient connecting element (40) is arranged on the drive shaft (22), and the connecting element is pressed into the hole (32) of the gear (16). The connecting element (40) makes possible the rotationally determined securement of the gear (16) onto the drive shaft (22) and forms an overload-protection device. The connecting element (40) also makes possible, through its radial resiliency, a tolerance equalization between the drive shaft (22) and the gear (16) in a radial direction.

Abstract: An apparatus for forming metal spheres includes a droplet generator, a buffering chamber, and a cooling drum. The droplet generator generates a droplet from a molten metal mass. The buffering chamber receives the droplet from the droplet generator, and diminishes internal kinetic energy of the droplet without solidifying the droplet. The cooling drum receives the droplet from the buffering chamber, and cools the droplet to the extent that the droplet solidifies into a metal sphere. The apparatus can further include a collector arrangement that receives the metal spheres from the cooling drum and makes the metal spheres available for collection.

Abstract: Apparatus for producing plastic film, of the type in which molten plastic is extruded through an annular die to form a tubular bubble which is expanded by air blown into the bubble, and a collapsing frame for forming the bubble into a flat tube prior to passing the tube through a nip formed between rollers, in which opposed, converging reaches of endless belts are used for the collapsing. The belts have their upstream ends held by a pair of first rollers spaced apart on opposite sides of the bubble, and have their downstream ends held by a pair of nip rollers which hold the belts together to form a nip for the collapsed tube. Pulleys and a belt, or gears, are provided which rotatably interconnect the pinch rollers and ensure that the belts entering the nip travel at the same surface speed.

Abstract: A melt spinning apparatus including a spinpack with a die tip block having a recess with a converging portion, such as an angled trough, which terminates in a row of filament discharge outlets. The recess selectively receives a configuration insert, such as a side-by-side insert or a sheath-core insert, that separates the converging portion of the recess into two sheets of liquid that combine at the filament discharge outlets. The spinpack may be configured by inserting either of the inserts to produce filaments having different cross sectional configurations of two different materials. Separation of the two liquids prevents premature interaction between the two liquid flows which minimizes instabilities between the liquid flow interface. The minimization of these instabilities can result in less formation of shot and improve other significant finished product properties. In addition, each type of liquid material may be maintained at an optimum temperature for proper extrusion.

Abstract: The invention relates to an extrusion device (1) for compacting metal parts, in particular shavings (3), for example made of Fe, Cu, Mg or alloys of these elements or other low melting metals or their alloys, into homogenous extrusion mouldings with at least one extrusion unit with an extrusion die (5) formed by a die housing (9) which forms a die cavity (8) and has a guide arrangement for an extrusion element (7) adjustable by a drive device (6), and with an inlet opening (28) for the shavings (3) in the die housing (9), whereby a compression channel (18) is arranged opposite a front face of the extrusion element (7) facing the mould cavity (8) and adjacent to the mould cavity (8) in the direction of a passage surface (15) for a material strand (2).

Abstract: An apparatus for producing a plastic molded article or product for use in an optical device is a mold assembly. The mold assembly includes a pair of molds having an inner mold surface forming a cavity with a preselected volume into which a molten molding material is injected via a gate or sprue to fill the cavity and thereby form a molded product having a sink surface and at least one mirror surface after the molten molding material has cooled. The inner mold surface includes at least one transfer surface portion against which the at least one mirror surface of the molded product is formed, and at least one non-transfer surface portion against which the sink surface portion of the molded product is formed. The mold assembly also includes at least one vent hole, at least one bore in communication with the vent hole so that a preselected air pressure is applied to the molten molding material in the cavity via the bore and the vent hole, and at least one exhaust hole adjacent to, but spaced from the vent hole.

Abstract: An extruder die head comprises an internal cylindrical mandrel and a shell, which encloses said mandrel concentrically. Between said mandrel and shell an annular channel is formed that empties into the die slit. A polymer melt is fed through a line to the annular channel. To prevent the polymer melt in the area of the start of the annular channel from penetrating into a slit that forms between the mandrel and the shell due to heat expansion, there is between both mandrel and shell a ring with such a coefficient of thermal expansion that when heated up due to the polymer melt said ring seals the slit between the shell and the mandrel.

Abstract: A polymer is fed upstream into an extruder. The polymer is melted and mixed in a zone (A). Cellulosic fibres are fed into the extruder in a zone (B). A mixture of the polymer and the fibres obtained in zone (B) is transported through a degassing zone (C) and then through a pressure building zone (D). The mixture is released from zone (D) into a die. Each of zones (A), (C) and (D) includes at least one positive transportation screw element. The zone (B) includes at least one positive transportation screw element, at least one kneading section and at least one negative transportation screw element such that the cellulosic fibres are fibrillated to obtain cellulosic fibres with an aspect ratio as high as possible while simultaneously mixing the cellulosic fibres with the melted polymer.

Abstract: A production line including a molding press for molding a resin on a strand of material and a cutting press for cutting parts from the strand. The production line feeds the strand at a uniform rate without slack. The cutting press includes a die that moves toward and away from the strand. The die moves transversely to the strand to transport cut parts.

Abstract: A pipe section formed of a polymeric material which has a substantially constant thickness throughout, the terminal edge of the female connection having a reinforcement structure which rigidifies the end of the female connection and prevents deformation, the pipe section preferably having a flared end, and the reinforcement structure preferably being a semicircular channel formed at the end of the pipe section by a mandrel after initial extrusion of the pipe section; along with a method and apparatus for forming the pipe section, a pipe assembly including such pipe section, and a method of forming the pipe assembly.

Abstract: An apparatus (100) for fabricating composite structures is provided that includes first and second tooling portions (110, 120) that are configured to support at least one layer (160) of composite materials during curing to form a composite structure. The apparatus (100) further includes a flexible hinge (140) that is disposed between and couples the first and second tooling portions (110, 120). The flexible hinge (140) couples the tooling portions (110, 120) such that they may be peeled away from the composite material after curing by bending the apparatus (100) at the flexible hinge (140).

Abstract: A smoke density monitor for mounting on a ship smokestack. The smoke density monitor provides a transmitter head and a receiver head mounted to a smokestack. The transmitter head and receiver head are optically connected with a density monitor by means of fiber-optic lines. The density monitor is electrically connected to an alarm monitor, which at pre-set smokestack smoke densities activates an alarm and/or shuts down the ship's burner(s). An optional recorder may be connected to the alarm monitor to preserve a record of smoke density. Each transmitter and recorder head has an optical head slidably attached to a head housing for ease of servicing and maintenance.

Abstract: An improved ignition system incorporated with a lighter includes a flint supported by a flint-spring between two supporting walls of the lighter. A striker wheel having a circumferential coarse striking surface positioned right above the flint is rotatably mounted between the two supporting walls. At least a driving wheel, having a plurality of gear teeth, is coaxially attached to a side of the striker wheel. A pusher button slidably disposed in a pusher cavity in a vertically movable manner. At least a trigger protrusion is outwardly protruded from a front wall of the pusher button wherein the trigger protrusion has at least an engaging tooth adapted for slidably engaging the gear teeth of the driving wheel to drive the striker wheel to rotate. And, a resilient element normally retaining and urging the pusher button in an upper normal position.

Abstract: A safety electronic lighter includes an ignition control switch, which is operated to drive a high voltage coil, causing it to discharge a high voltage in producing sparks, the ignition control switch being rotatable between the operative position and the non-operative position, a safety lock, which is operated to lock the ignition control switch, prohibiting the ignition control switch from operation, a first power control switch, which is operated to switch on/off the power supply circuit of the electronic lighter, a second power control switch adapted to control the operation of the first power control switch and being rotated between the operative position and the non-operative position.

Abstract: In an apparatus for precisely locating an orthodontic bracket at a predetermined position on a surface of a tooth, orthodontic brackets for holding orthodontic wires can be easily and precisely located at and adhered to a predetermined position on a surface of a tooth, not only at an initial time but also even when the used orthodontic brackets are separated from the surface of the tooth in the course of the orthodontic treatment. The apparatus has a suspension body, a ring, and a molding spacer. The suspension body is disposed extending in parallel with the tooth from an apex toward a dental root of the tooth with a predetermined gap. The ring is inserted in the groove and hooked around the hook after the holding member has been fittedly inserted in the fitting recess, to thereby tightly assemble the suspension body and the orthodontic bracket together. The molding spacer is disposed between the suspension body and the tooth.

Abstract: A dental diamond bur is provided, which is applicable for operations including from opening of a pulp chamber to spreading of a root canal orifice to any teeth of anterior teeth and molars; does not cut out a tooth orifice portion more than needed; cuts out a tooth orifice surface into a smooth curve surface form, thereby improving the adhesion between a filler and a tooth in that cut-out site; and is free from occurrence of perforation, in the root canal treatment. The dental diamond bur includes a tip portion that is a body of revolution with a convergent smooth curve, having a diameter in a shank portion side thereof of 0.5 to 0.8 mm and a height of 0.5 to 0.85 mm; and a diamond grains-attached portion that is a body of revolution with an externally convex curve from a rear end of the front end portion toward a shank portion, a maximum diameter portion of the diamond grains-attached portion being positioned in a range of 5.0 to 10.