Abstract: A device (10) for protection of an external probe (12) of an aircraft that projects through an opening (14) that is made in the outside surface (16) of the aircraft. The protective device (10) includes a rigid flange (22) for attachment to the outside surface (16) of the aircraft and a flexible envelope (24) for protection of the probe. The flange is attached by rapid attachment elements to the outside surface of the aircraft.

Abstract: An electro-mechanical linear actuator unit comprising an actuator housing that accommodates at least two electric drives, each of which, when actuated by a control device, sets an associated drive of a respective spindle drive into rotation for adjusting linear movement of the associated spindle drive in order to produce relative linear adjustment of a control rod. The two electric drives are located in the actuator housing in such manner that relative adjustment can be produced by simultaneous actuation of the two electric drives, as the sum of the adjustment movements of the associated spindle drives, or by actuating a single electric drive, as the adjustment movement of the associated spindle drive. A respective brake is provided, in an area of each of the two electric drives, which can be selectively actuated by the control device to then prevent the adjustment movement of the respective associated spindle drive.

Abstract: In a parking release actuator, a related motion between a motor and a cable uses a number of worm gears and worm wheel gears using rotation motions in different directions, and the cable is pulled or released by a cable guide converting a rotation motion into an angular motion. Therefore, a number of worm gears and worm wheel gears and the cable guide are made compact and intensive. As a result, it is possible to reduce the entire size of a housing and significantly reduce the operation of the operator required for manual locking or manual release, thereby further improving convenience.

Abstract: A motorisation device comprises two substantially parallel winding cylinders, and at least one longitudinal linking element able to maintain a predetermined distance between the winding cylinders and wound around winding tracks, the linking element consequently having a crossing point located between the winding cylinders. The motorisation device includes two flexible tracks, fixed on each of the winding cylinders and arranged to face and to touch eachother at the contact point, a pre-stressing force being applied to the contact point under the effect of said linking element. The flexible tracks are spiral shaped and arranged such that the contact point between the two spiral-shaped flexible tracks, located between the winding cylinders, is offset relative to the crossing point of the linking element, such that a torque dependent on the distance between the contact point and the crossing point is applied to the contact point, causing reciprocal rotation of the flexible tracks.

Abstract: The invention relates to a telescopic actuator comprising: a cylinder having means for coupling it to a first external element; a rod mounted to slide telescopically in the cylinder along a sliding axis and including means for coupling it to a second external element; a lead screw mounted to rotate in the cylinder about the sliding axis and extending inside the rod to co-operate with a nut secured to the rod, such that rotating the lead screw causes the rod to slide; drive means for driving the lead screw in rotation; and retention means for axially retaining the lead screw, which means hold a bearing of the lead screw captive in an axial direction; wherein the retention means are arranged to retain the bearing of the lead screw with axial clearance suitable for absorbing movements imparted to the rod relative to the cylinder.

Abstract: A driving device having a housing tube connected to a stationary base part or a movable structural component part a protective tube connected to the other respective part a spindle drive which has a threaded spindle and a spindle nut arranged on the threaded spindle by which the housing tube and protective tube are movable axially relative to one another, and a rotary drive that drives the spindle drive via a clutch, a rotationally rigid interconnection thereof can be canceled when a determined torque is exceeded. A magnetic ring having a plurality of north and south poles is rotationally arranged near a stationary sensor element. The magnetic ring is arranged at the clutch that is connected to the threaded spindle, fixed with respect to rotation relative to it.

Abstract: A mount for a shaft includes a collar, disposable around the shaft, a first mating piece and a second mating piece. The collar includes first and second tapered outer surfaces that taper away from each other. The first mating piece has a first tapered aperture that is configured to mate with the first tapered outer surface of the collar. The second mating piece has a second tapered aperture configured to mate with the second tapered outer surface of the collar. The first and second mating pieces are adapted to be aligned such that when the collar is mated with the first and second mating pieces, the shaft is substantially perpendicular to the first mating piece.

Abstract: A manual transmission for vehicles minimizes rotational inertia and improves rattle as a consequence of preventing unnecessary idling of a first speed gear and a reverse speed gear by maintaining a first input gear to be a free gear state at all shift-speeds except a first forward speed and a reverse speed.

Abstract: A method of controlling a hydraulic control system for a dual clutch transmission includes controlling a plurality of pressure and flow control devices in fluid communication with a plurality of clutch actuators and with a plurality of synchronizer actuators. The clutch actuators are operable to actuate a plurality of torque transmitting devices and the synchronizer actuators are operable to actuate a plurality of synchronizer assemblies. Selective activation of combinations of the pressure control solenoids and the flow control solenoids allows for a pressurized fluid to activate at least one of the clutch actuators and synchronizer actuators in order to shift the transmission into a desired gear ratio.

Abstract: The joint mechanism includes a first link, a second link, a third link, a shaft supported on the second link to be rotatable about an axis thereof, and movable in an axis direction thereof, a first worm and a second worm mounted on the shaft, a first worm wheel in mesh with the first worm to pivotally move the first link with respect to the second link, and a second worm wheel in mesh with the second worm to pivotally move the third link with respect to the second link. The first link and the third link are pivotally moved in opposite directions to each other by rotating the shaft, and pivotally moved in identical directions to each other by moving the shaft in the axis direction.

Abstract: A motion guide device includes a ball nut attached onto a shaft and having helical grooves for forming a ball guiding raceway between the ball nut and the elongated shaft and for receiving ball bearing elements, a circulating device attached to the ball nut and having a pathway communicative with the raceway for forming an endless ball guiding passage between the ball nut and the elongated shaft and the circulating device and for engaging with bearing elements, and a retaining device includes a shorter chain for engaging into the helical grooves or raceway of the screw shaft and the ball nut, and a longer chain for engaging into the pathway of the circulating device.

Abstract: The present invention relates to a decelerator for generating a booming sound. In particular, the present invention includes a shaft connected with a motor; an input (first) gear engaged in the input shaft, and an output (second) gear mated with the input gear. The motor controls the vehicle speed and delivers the torque of the output (second) gear which is characterized in that output gear further includes an unbalanced drive (third) gear installed on the shaft spaced a predetermined distance from the input (first) gear. Further, an unbalanced driven (fourth) gear is mated with the unbalanced drive (third) gear, and an unbalanced module, having an unbalanced mass, is connected with the unbalanced driven (fourth) gear.

Abstract: A shifting range sensing device may include an electronic communication unit that includes a housing fixed to an outside of an external bracket of a shift lever, a magnet being disposed in the housing and rotatable in a forward-backward direction therein wherein the magnet pivots with rotation of the shift lever in the forward-backward direction, and a hole sensor sensing the forward-backward direction movement of the magnet, and a microswitch electrically connected with the electronic communication unit and engaged to a side of the shift lever, wherein the microswitch may be turned on/off in accordance with a left-right rotation of the shift lever, wherein the microswitch transmits on/off signal to the electronic communication unit and the electronic communication unit transmits information sensed by the hole sensor and the on/off signal sensed by the microswitch to a transmission controller.

Abstract: A vehicle includes a transmission having at least one controllable actuator provided for engaging and/or disengaging at least one transmission gear, and a selection element to be operated manually, by which the actuator can be controlled, wherein. In order to engage a transmission gear, the selection element must first be moved in the direction of a specified end position assigned to the corresponding transmission gear. The selection element can be moved into the end position assigned to the corresponding transmission gear only when the corresponding transmission gear is actually engaged.

Abstract: A shifting apparatus for a manual transmission automatically performs a selecting operation and a shifting operation through the driving of one motor according to a shift step level of a shift lever at the time when a driver operates the shift lever.

Abstract: A shift lever for an automatic transmission improves a shift manipulating feeling and simultaneously reduce a rattling noise by preventing noise generated due to contact with a rod after manipulating a push button. The shift lever for the automatic transmission may include a rod movably provided inside the shift lever in its longitudinal direction, a push button vertically provided to the rod, an operating portion provided between the push button and the rod, and having a supporting portion at which an installation hole is formed and a slant portion, and a damping unit coupled to the installation hole, and provided between the rod portion and the supporting portion to absorb and reduce vibration of a power train transferred through the rod and vibration due to a road surface.

Abstract: An external gearshift is provided for a motor vehicle shift transmission comprises a shift selector lever that can be moved in a shift degree of freedom and a selection degree of freedom, a selector lever that can be pivoted about an axis, which is coupled to the shift selector lever in order to follow a movement of the shift selector lever in the selection degree of freedom, and a torsion spring, which acts on the selector lever, in order to load the shift selector lever into a neutral position of the selection degree of freedom.

Abstract: A support mechanism for a robot includes a support member, and a fixing member. The fixing member is placed on the support member, and includes a V-shaped resilient clip with a fixing groove. A robot securely configured with the support mechanism is also provided when the robot is being transported or stowed when not in service.

Abstract: The invention concerns a mechanism having the necessary conditions in order that the rotational motion of a body can be actuated in a decoupled and homokinetic way by motors (M1, M2, M3) installed on the same frame, by means of transmission based on homokinetic joints (CV). In particular, decoupled and constant relations are generated between the motors speeds (q1, q2, q3) and the time derivatives of the variables describing the body orientation (?1, (?2, ?3), thus maintaining the homokinetic condition of the transmission during the simultaneous movements of more motors. The invention therefore concerns new architectures of decoupled and homokinetic joints, with two or three degrees of freedom. They are characterised by uniform input-output kinetostatic relations and suitably wide working spaces.

Abstract: A power control member for manned vehicles is revealed. The power control member includes a handle, a stem support and a power controller. The handle is sleeved and assembled with the stem support of a manned vehicle, and the power controller is arranged between the handle and the stem support. A power control shaft of the power controller shares the same axis with the handle and connects to the handle. Thereby rotation of the handle drives the power controller to control the direction and speed of the manned vehicle.

Abstract: A unique motor type motor driven column apparatus may include a motor attached to a telescoping tube that slidably receives a column tube therein, wherein the telescoping tube may be pivotally coupled with a vehicle body by a tilt bracket, an actuating rod rotating by the motor, a tilt mechanism including a tilt clutch receiving the actuating rod therethrough and selectively engaged therebetween by a motor controller such that a rotation force of the actuating rod may be converted into a linear movement of the tilt mechanism to make a tilt motion of the column tube, and a telescoping mechanism including a telescoping clutch receiving the actuating rod therethrough and selectively engaged therebetween by the motor controller such that a rotation force of the actuating rod may be converted into a linear movement of the telescoping mechanism so as to make a telescoping motion of the column tube.

Abstract: The disclosed device controls a cable associated with a bicycle gearshift and is particularity configured for securing the body of the device on the forward-facing end of racing bicycle handlebars. A cable winding bobbin, having an internally toothed crown, is provided in the device's body and a drive mechanism rotates the bobbin in the chosen direction to achieve predetermined angular positions. A ratchet mechanism, located between the lever and the toothed crown, includes opposite rocker arms with cam profiles curved away from each other, and a toothed sector for engaging the toothed crown. A pointer is located to be selectively engaged with at least one of the rocker arms so that engagement results in the rocker arm's toothed section being away from the toothed crown, and disengagement results in the rocker arm's toothed section being engaged with the toothed crown.

Abstract: A cable assembly having an elongate cable and a cable fitting having an elongate body with a first end, a second end, and a tubular duct extending therethrough adapted to receive the elongate cable. First and second annular rings extend substantially circumferentially around a portion of the elongate body and define an annular groove therebetween. A circumferential support has a first section that extends from the first annular ring to the first end and a second section that extends from the second annular ring to the second end, and has ribs extending radially outwardly therefrom. An outer circumference of the annular groove is less than an outer circumference of the circumferential support.

Abstract: Disclosed is a grip (1) for the handlebars (3) of a two-wheeled vehicle and in particular of a bicycle, including an essentially cylindrical main body (2) capable of fitting onto a portion of the handlebars (3) that is rectilinear and essentially perpendicular to the frame of the vehicle. The grip (1) also includes a shaft (4) that is integral with the main body (2), forming an angle with the longitudinal axis of the handlebars of between 30° and 60°, and equipped with an abutment (5) at its free end.

Abstract: A pedal device for a vehicle may include a brake pedal and an accelerator pedal which may be pivotally installed in a movable panel, an electric device selectively moving the movable panel, and an eco device transferring a motion of the electric device to the accelerator pedal to adjust a pedal effort of the accelerator pedal or vibrate the accelerator pedal.

Abstract: Provided is a brake pedal device that can effectively prevent a brake pedal from hurting a drive by forcibly rotating the brake pedal toward the front of the vehicle, away from the driver, when the brake pedal is pushed to driver by a car collision, with the brake pedal supported to the car body. The brake pedal device includes a brake pedal pivotably supported to a car body, and a pivot lever forcibly pivoting the brake pedal to the front of a vehicle, away from a driver, by forcibly pivoting by means of the car body in a collision.

Abstract: An adjustable pedal (20) comprises a rotatable plate (24) for securing to the floor (22) of a vehicle cab, and a pedal module (26) comprising a pedal pad (30) which is pivotally mounted to a base element (32) which is rotatably mounted to the plate. The position of the pedal module can be adjusted by rotation of the plate relative to the pedal module and the floor.

Abstract: A bicycle pedal includes a lateral spindle parallel to an X-axis and perpendicular to a Y-axis the X-axis, and includes an inclined surface formed in the inner and front side portion and tilted outwardly and tilted relative to the Y-axis for a tilting angle “A” ranged from five (5) to twenty five (25) degrees, and includes another inclined surface formed in the outer and rear side portion and tilted inwardly and tilted relative to the Y-axis and parallel to the feet of the user for suitably supporting the feet of the user and for allowing the pedal members to be suitably or effectively stepped or actuated by the user, and includes one or more air passages, air pathways or openings for air circulating purposes.

Abstract: A bicycle pedal includes a pedal body having a spindle on the middle and two side frames at two opposite sides; a toe clip having a curved, flexible clip body, a through hole located on the top side for the insertion of a toe strap that is mounted in the pedal body and a mounting block located on the bottom side and movably connected to one side frame of the pedal body; and a supplementary device movably connected to the other side frame of the pedal body and having a guide face curving in direction away from the toe clip.

Abstract: A filler member to be installed in a crankshaft including a crank web includes: an arm member, extending in a diametrical direction of a crank journal, and a weight member extending in a radial direction of the crank journal. The filler member includes: a fitting member, a connecting member mounted on the bodies. The fitting member is fixed to an outer side face of the crank web. The connecting member is mounted on the bodies to stride the arm member on inner side face of the crank web.

Abstract: A vehicle is described having a transmission driven through a propulsion unit such as an engine, and through a CVT. The transmission is comprised of an input shaft and an output shaft which are coaxially disposed. An idler shaft is driven by the input shaft, and the idler shaft drives the output shaft, through selected gear sets, to provide different gear ratios or drive directions. The CVT also has a fan on the driven side which feeds air through the CVT for cooling. The CVT comprises a drive side clutch and a driven side clutch with the output shaft of the extending through the CVT driven clutch.

Abstract: The present invention discloses a method for recovering rare earth particulate material from an assembly comprising a rare earth magnet and comprises the steps of exposing the assembly to hydrogen gas to effect hydrogen decrepitation of the rare earth magnet to produce a rare earth particulate material, and separating the rare earth particulate material from the rest of the assembly. The invention also resides in an apparatus for separating rare earth particulate material from an assembly comprising a rare earth magnet. The apparatus comprises a reaction vessel having an opening which can be closed to form a gas-tight seal, a separation means for separating the rare earth particulate material from the assembly, and a collection means for collecting the rare earth particulate material. The reaction vessel is connected to a vacuum pump and a gas control system, and the gas control system controls the supply of hydrogen gas to the reaction vessel.

Abstract: One embodiment of method for extracting hexavalent chromium includes preparing a liquid sample by adding a fatty acid to a polymer material, adding water or an aqueous alkali solution to this sample, and extracting hexavalent chromium contained in the sample in the water or the aqueous alkali solution.

Abstract: Porous leach pipe and method for leaching metals from mining ores. The porous pipe may be buried beneath the surface of a pile of mined ore, providing a more even and uniform distribution of the leaching solution across the pile, increasing metal yields, reducing water consumption and eliminating pooling and ponding of the solution on the top of the piles as occurs with prior art drip line emitters.

Abstract: A tactical entry tool for creating an entry point through a building structure is provided. The tool includes a shaft portion including a shaft, and a head portion attached to a first end of the shaft. The head portion includes two heads, with each head including a head shaft extending from the shaft to form a ‘Y’ shaped structure and a break head portion attached to the head shaft at an opposite end from which the head shaft is connected to the shaft. Each break head portion includes a plurality of teeth surrounding the perimeter of the break head portion and a plurality of breaker tips extending from the break head portion.

Abstract: A rod tong assembly has inner and outer rings. The outer ring has rollers disposed about a central opening. The inner ring disposes in the outer ring and has three jaws for engaging a rod element. The outer ring is rotated clockwise to make a rod connection and is rotated counter-clockwise to break the rod connection. When rotated, the rollers pivot the opposing jaws pivot against flats of the rod element. Further rotation of the outer ring then rotates the inner ring to respectively tighten or loosen the connection. To return the assembly to its default condition, operators switch a lock disposed on the inner ring to a return condition. When the outer ring is then rotated back, the lock catches on the outer ring and allows the inner ring to rotate in the same direction as the outer ring.

Abstract: A jaw assembly for a power tong or back-up tong is provided with a jaw die plate and a die seating surface that are shaped to permit radial insertion of the die plate (7) onto its seating surface (2). Both vertical (4) and horizontally (6) aligned splines, or spline segments are present on the seating surface. The vertical splines are interrupted along on at the end of their lengths by gaps (5a). Grooves (11) along with the protrusions (10) on the mating surface of the die plate interfit between the splines and/or spline segments and gaps to stabilize, or anchor the die plate on the seating surface against vertical displacement and to absorb rotational torque forces. The portion of the protrusions on the die plate that are positioned to extend into the gaps in the vertical splines support the die plate against vertical shearing forces, resisting disengagement of the die plate from its seating surface.

Abstract: A standard mechanic's ratchet modified with a square-receiving hole at the bottom of the handle receives the square drive of a second ratchet to provide additional leverage for the removal of nuts and bolts. Existing mechanics ratchets do not have a hole to accept the square drive of a second ratchet. The Adrin Leverage Ratchet provides mechanics with additional leverage for the removal of over-tightened nuts and bolts.

Abstract: A ratcheting wrench includes a driving head having a receiving hole defined through the driving head. The driving head includes an inner flange and multiple teeth. The inner flange inwardly extends from an inner surface of the receiving hole. The multiple teeth extend from the inner surface of the receiving hole. Each tooth has a bottom connected to the inner flange and includes an upper edge, a first side, a second side and beveled ridge. The beveled ridge extends from a juncture between the first side and the upper edge to the inner flange, gradually and inwardly protrudes from an inner surface of the tooth, and includes an engaging bevel and a guiding bevel. The present invention allows the wrench body to continuously rotate a fastener without detaching from the fastener.

Abstract: The present invention relates to the compact multi socket capable of turning a plurality of bolts or nuts having different diameters by one tool. The outer socket A at the upper part is provided with the handle connecting hole 1, the installed inner socket C and the coil spring 26 installed between the outer socket A and the inner socket C so as to bias the inner socket in a direction for pushing out the inner socket from the outer socket A. The outer socket A, the polygonal sliding inner peripheral surface 4 having the large holding part 5 is formed from the opening part to a part near the intermediate part, the sliding inner peripheral surface 31 is formed at the intermediate part, and a ring sliding inner peripheral surface 17 is formed from a part near the intermediate part to the upper part.

Abstract: A wrench may have a cord extending from the wrench to tether the wrench to an adjacent object. The first end of the wrench may be configured to enclose a nut or a bolt. The second end of the wrench may have one or more holes through which the cord may be inserted. Each end of the cord may have a hook. The cord and/or the hooks may be used to secure the second end of the wrench to the adjacent object. Cords having different lengths may be provided so that a distance between the second end of the wrench and the adjacent object may be accommodated.

Abstract: A wrench may have a cord extending from the wrench to tether the wrench to an adjacent object. The first end of the wrench may be configured to enclose a nut or a bolt. The second end of the wrench may have one or more holes through which the cord may be inserted. The portion of the wrench having the one or more holes may be perpendicular to the rest of the wrench. Each end of the cord may have a hook. The cord and/or the hooks may be used to secure the second end of the wrench to the adjacent object. Cords having different lengths may be provided so that a distance between the second end of the wrench and the adjacent object may be accommodated.

Abstract: A tool, such as fixed-joint pliers, has first and second levers which are movably joined. The levers are joined at a joint comprising a housing and a coupler. The housing is defined by a first housing portion of the first lever and a second housing portion of the second lever. The housing has an interior area which houses a biasing member, such as a torsion spring. The coupler may comprise first and second bushings which extend through a passage through the housing and the torsion spring therein, and a male fastener which extends through one of the bushings and into engagement with the other bushing. The pliers have a thin profile and are biased to an open position for use.

Abstract: A press-set threaded screw assembly includes a first member having an aperture. A second member abutting the first member includes a threaded bore co-axially aligned with the aperture. A screw body includes a body flange, a neck portion, and a threaded member. The threaded member in a non-installed condition has first and second displacement portions separated by a tapered slot, each having a main thread portion. A pin is frictionally received in a bore created through the body flange and neck portion in a screw non-installed condition. The threaded member is inserted through the aperture and received in the threaded bore in an initial installation condition. The pin is axially aligned to slide into the tapered slot, whereby the pin oppositely displaces the first and second displacement portions away from each other to contact a plurality of female threads of the threaded bore, defining an installed condition.

Abstract: A fastener includes a connecting portion and a head portion connected with the connecting portion. The head portion defines an engaging hole and includes a plurality of protruding teeth separately formed on an inner peripheral wall of the engaging hole, respectively, toward a central axis of the engaging hole of the head portion, and a plurality of recesses are formed between every two adjacent protruding teeth, respectively. The head portion further includes a plurality of resisting projections separately formed on the inner peripheral wall of the engaging hole, toward the central axis of the engaging hole, and received within the corresponding plurality of the recesses of the head portion, respectively. The present disclosure further provides a driver engaging with the fastener and a punch producing the fastener.

Abstract: A knife holder (402) for a tube cutting unit is adapted to receiving a rotating tube fed out from a tube manufacturing device in a feed direction (316). The feed direction is parallel with the tube's longitudinal direction and the rotation takes place about an axis in the tube's longitudinal direction. The knife holder is adapted to following the rotating tube in the latter's longitudinal direction and to bringing a knife element into contact with the tube in a cutting direction and thereby creating in the rotating tube a cut at right angles to the longitudinal direction of the tube. The knife holder is further provided with at least a first bearing element (414) and a second bearing element (415) configured to engage in respective brackets (416, 417) in the tube cutting unit.

Abstract: A device for cutting food products for a slicer is provided including a product feed, at least one cutting blade, a common drive, and respective transmission units. The product feed includes a plurality of conveying devices arranged generally parallel next to one another, each having a conveying speed for simultaneously feeding a plurality of food products to a cutting plane. A respective one of the plurality of conveying devices is associated with each of the plurality of food products. At least one cutting blade is configured for moving in the cutting plane. The common drive is for the plurality of conveying devices. The respective transmission units are for each of the plurality conveying devices. Each transmission unit has a variable transmission ratio. The transmission ratios are variable to individually vary each of the conveying speeds of the plurality of conveying devices.

Abstract: A device for slicing a food product is provided including a product feed and an adjustment apparatus. The product feed feeds the food product to be sliced along a product conveying direction to a cutting plane, in which a cutting blade moves. The food product has a contour and a front product end region. The product feed includes at least one end element which has at least one of a product guiding support surface and a product contact surface for the front product end region. The adjustment apparatus adjusts the at least one end element to have a component of movement generally perpendicular to the product conveying direction. The adjustment apparatus is configured to adjust at least one of the product guiding support surface and the product contact surface of the at least one end element to the contour of the food product during a slicing operation.

Abstract: The invention relates to a process and device for cutting materials, such as metals, concrete, wood, plastics or any other type of material, by means of a jet of cryogenic fluid at very high pressure with added abrasive, in particular corundum. Materials can be cut using a disk cutter (concrete, stone, metals, etc.), with a saw (metals, wood, plastics, etc.), by laser beam (metals, plastics, etc.), using a plasma jet (metals), using an ultrahigh pressure (UHP) water jet with or without abrasives (any type of material).

Abstract: A cutting apparatus including a chuck table for holding a workpiece, a cutting unit having a cutting blade for cutting the workpiece held on the chuck table, a cutting water supplying unit for supplying a cutting water to a work portion to be cut by the cutting blade, a pair of vibrating plates provided on the opposite sides of the cutting blade in such a manner that a spacing for forming a cutting water layer is defined between the upper surface of the workpiece held on the chuck table and the lower surface of each vibrating plate, and an ultrasonic vibrator for giving ultrasonic vibration to the vibrating plates.