Abstract: Presented is an improved concept airfoil, or more properly called fluid dynamic foil, that promises coefficients of lift several times better than present day airfoils or hydrofoils. This is accomplished by use of a rotary Coanda fluid accelerator that is part of the boundary of a high camber or fat airfoil shape. Acceleration of oncoming fluids over the low static pressure side of the airfoil by the rotary element not only decreases the static pressure thereby increasing lift but also improves flow characteristics over the low static pressure side of the airfoil which reduces or eliminates flow separation and its associated turbulent drag effects. Alternative ways to eliminate the flow separation are also presented as well as are ways to control the angle of attack of the airfoil. The concept presented is applicable to aircraft wings, rotary wings such as used on helicopters, hydrofoils, wind and water turbine blades, and the like.

Abstract: A device for guiding a hose of an industrial robot, having at least one supply line, with a guide element wherein the hose can move against the restoring force of a restoring element. The guide element has an axial guide segment for guiding the hose in its longitudinal direction and a compensation segment adjoining the guide segment. The compensation segment is formed by a housing configured such that a lateral deflection of the supply line—in relation to the longitudinal direction—is made possible in the housing across an axial section. The guide element is formed so that it can swing open. At the entry side into the guide element the hose is surrounded by an abutment for the restoring element. The abutment may be inserted in the guide element or mounted in a fastening clamp block.

Abstract: A retaining device is particularly suited for suspending an electrical extension cord from a support. The retaining device features an elastomeric body section. A first holder suspends the retaining device from the support and features a base disposed at a first end of the elastomeric body and a flexible strap. The strap is wrapped around the support and secured to the base. A second holder suspends the electrical cord and features a base secured to a second end of the elastomeric body having at least one arm extending outwardly and generally towards the base. The arms define a channel size and shaped to accept the electrical cord. According to one embodiment, the second holder features at least two arms and at least two channels. Alternatively, the second holder features a single arm that is either biased towards the base or includes a flexible strap that engages the base.

Abstract: A bar clamp assembly configured to be secured to a structure through a fastener includes a bar clamp, a securing base, and a fastener retention member. The securing base may be integrally formed with the bar clamp, and is configured to receive and retain the fastener. The fastener retention member is within or on the securing base, and is configured to secure the fastener in the securing base. The bar clamp assembly may also include a plurality of braces, clips and other support structures between the bar clamp and the securing base in order to provide a more robust assembly.

Abstract: A lightweight portable holder for trash bags which comprises a ring set upon adjustable legs that is capable of holding disposable trash bags, preventing them from falling over and assisting in ease of cleanup.

Abstract: A lightweight and compactable beverage container holding device. The beverage container holding device may be made of a single piece or multiple pieces of material and is preferably foldable or otherwise collapsible into a reduced size for shipping or storage. The device preferable supports use on non-uniform surfaces, provides ample visible surface area for promotional marking and may have minimal points of contact with a beverage container. The device may be configured to accommodate different size beverage containers.

Abstract: In one set of embodiments a pool cue case is equipped with a tripod type stand adapting the pool cue case to stand in an angled upright position on its own without the need to lean against a wall or table and provide improved visibility so as not be trampled by pool players and guests. The pool cue case includes a pool cue rest where the pool cue can be placed between turns. The pool cue rest shelters the pool cue against the case while the cue is not in play while also placing the pool cue at a convenient elevation so as to be readily retrieved by a standing pool player. In another set of embodiments a musical instrument case is equipped with a tripod stand and an instrument rest for instruments such as the flute, violin, varieties of horns, as well as other instruments in a manner similar to the pool cue case discussed above.

Abstract: A monitor stand includes a base, a cylindrical housing located on the base, the housing having an opened top and bottom, and a packing assembly in the base for opening/closing the bottom of the housing. A piston is located in the housing, the piston being movable up/down. A first elastic member is located under the piston, for being compressed when the piston moves down. A bracket is located on a top of the piston, and a tilt/swivel adjusting device has one end fixedly secured to a front of the bracket, and the other end provided to a rear of the monitor. The tilt/swivel adjusting device permits the monitor to tilt forward/backward, or swivel left/right when an external force is applied.

Abstract: A product information assembly, including a main body portion, a self-coiling information sheet, and a mounting structure. The main body portion may define a slot. The self-coiling information sheet may extend through the slot and may include a first end retained behind the main body portion and a second end positioned in front of the main body portion. The self-coiling information sheet may be operative in a display mode in which substantially all of the self-coiling information sheet is extended in front of the main body portion and a coiled mode in which substantially all of the self-coiling information sheet is coiled behind the main body portion.

Abstract: An apparatus is disclosed including a mounting bracket, one or more pegboard hooks, and a graphic strip holder. The mounting bracket can be inserted into a pegboard. The pegboard hooks can be attached to the mounting bracket. The graphic strip holder can also be attached to the mounting bracket. A plurality of product packages can be held on a hook member of one of the pegboard hooks. The mounting bracket may include a first plate and plurality of protrusions which are parallel to each other and which are attached to the first plate. Each pegboard hook may be comprised of a mounting section and a hook member fixed to the mounting section.

Abstract: A surgical clamp includes a support frame clamp member, a retraction shaft clamp member and a handle linked to the support frame clamp member and the retraction shaft clamp member for moving the clamp members between loosened and tightened positions. The shaft clamp and the support frame permit pivoting of the retraction shaft relative to the support frame. The handle is disposed to move through a throw of less than 90°, always outside the support frame and always in alignment with the retractor shaft. For a standard orientation of the clamp, the tightening throw is vertically upward, on a handle which is balanced and aligned relative to the pivot axis and possibly relative to the connection of the frame clamp to the support frame.

Abstract: A method and system are disclosed, may include a mounting device for a piece of equipment having an accessory receptacle. The mounting device may include at least two arms connected together providing at least two rotation axes, a mounting stud for mating with the accessory receptacle and connected to one of the two arms providing at least one rotation axis, and a mount for mating with an accessory of the equipment and connected to the other one of the two arms providing at least two rotation axes.

Abstract: A motorized mount for an electronic display includes a biaxially shiftable mount assembly including a positioning assembly being translatably shiftable in a plane and a rotator assembly operably coupled to the positioning assembly, the rotator assembly being rotatably shiftable about an axis, the axis being orthogonally disposed relative to the plane. A method of selectively positioning an electronic display is further included.

Abstract: A liquid crystal display (LCD) is disclosed. The LCD includes: a screen; a pivot seat mounted at the rear surface of the screen; a connection rod; a first hinge chain positioned at the pivot seat and the top end of the connection rod so as to adjust the observation angle of the screen; a seat body; a pivotal section mounted onto the seat body; and a second hinge chain positioned at the pivot seat and the other top end of the connection rod so as to adjust the height of the screen.

Abstract: A hook and method for supporting at least one of a storage and organization device from a standard using a hook are provided. The hook includes at least one engagement member configured to extend through an opening of a mounting component and configured to be removably engaged with the mounting component. The hook further includes at least one support member configured to support in a hanging configuration at least one of a storage and organization device.

Abstract: A compact, portable toothbrush carrier and toothpaste dispenser by which a toothbrush and a tube of toothpaste are held in close proximity to one another. The head and bristles of the toothbrush are received within a toothbrush retaining cavity such that the handle of the toothbrush extends outwardly from the cavity. A door is rotated across the cavity to prevent a removal of the toothbrush head and bristles. The tube of toothpaste is detachably connected to a first screw-threaded fitting which projects from a toothpaste dispensing station. A second fitting which also projects from the toothpaste dispensing station lies in fluid communication with the first fitting via a toothpaste dispensing passage therebetween. Toothpaste is dispensed from the second fitting at the toothpaste dispensing station to be applied to the toothbrush when the tube of toothpaste connected to the first fitting is squeezed to force some of the toothpaste outwardly therefrom and into the toothpaste dispensing passage.

Abstract: A medication container holder for holding at least one medication container includes at least one base having a forward end and a rear end with the base being slanted upwardly from the forward end to the rear end, and each base comprising a plurality of spaced-apart medication container holding spaces for removably holding a medication container. The plurality of medication container holding spaces are arranged successively beginning from the forward end to the rear end of the base, and adapted so that each of the successive medication containers placed in the spaced-apart medication container holding spaces formed by the slanted base is elevated relative to the preceding medication container held in a preceding medication container holding space to yield a tiered arrangement. The bases may employ an interlocking mechanism to enable bases to be removably attached to each other.

Abstract: A self-absorbent, self-conforming disposable coaster for different sized beverage holders and a method for providing targeted advertising indicia thereon, are presented. The coaster is inserted into a beverage holder prior to placing a beverage container therein. Once the beverage has been consumed, or when the coaster has reached a predetermined saturation point, the coaster is discarded and a new coaster is inserted. Thus the beverage container holder remains clean. The exterior surface of the coaster is, preferably, coated with an impermeable material, to prevent liquids absorbed through the top surface from passing through the coater to the beverage holder. The coaster further allows for the emplacement of an advertisement indicia on its surface. Data representative of advertising indicia to be provided on beverage holder coasters is received via suitable communications network.

Abstract: A device for retaining sheets of construction material in a generally upright position includes an elongated base member having an attachment structure at a first end that permits attachment of the elongated base member to a support surface with the elongated base member extending generally horizontally away from a support surface to which the base member is attached. The device further includes a retaining member having a female connecting structure at an upper end of the retaining member. The female connecting structure slidably connects the retaining member to the base member such that the retaining member can be positioned at a selected one of a plurality of positions along the base member. The retaining member further includes a retaining arm that extends downwardly from the female connecting structure. A releasable connecter structure selectively prevents movement of the retaining member relative to the base member in at least a first direction.

Abstract: A support system for a display device comprise a track system that defines a display movement path for movement of the display device. A support member that is movably engaged with the track supports the movement of the display device along the movement path. A cable management system has a cable of predetermined length that electrically connects to the display device and a flexible cable carrier disposed in the track system carries the cable. The flexible cable carrier has a fixed end along a first cable movement path and a moving end along a second cable movement path that is distinct from the first cable movement path.

Abstract: An economical foldable padding press for compressing paper and other sheet material. Adhesive is applied to the compressed edges for making pads, tablets and books. The components of the press rotate around a base to a folded and compact position for shipping and storing.

Abstract: A device for turning one or more pages of book comprising a plurality of pages, the device comprising: a book support; a device support for supporting: first page-flattener for flattening a first page; second page-flattener for further flattening the first page; a page ruckler for ruckling the first page to form a ruckled page having an exposed surface and an opposite, unexposed surface; a page turner for engaging with the unexposed surface of the ruckled page thereby to turn the ruckled page; positioning means for moving the device support relative to the book support.

Abstract: A reinforced pipe hinge includes first and second elongate hinge members, the first hinge member having stem and tail portions. A first reinforcement member is received within the stem portion and includes a main body portion and a pair of axially extending struts, the struts defining a channel therebetween. The second hinge member has a first end pivotally attached to the first hinge member at a pivot point located between the stem and tail portions to enable pivoting movement of the hinge device between an extended position and an articulated position. A second reinforcement member is secured to the second hinge member and has a tongue pivotally received within the channel. The first and second hinge members are in aligned coaxial relation and the tail portion engages the second hinge member when the first and second hinge members are in the extended position. A fastener releasably secures the first and second hinge members in the extended position.

Abstract: A mounting bracket for mounting a post on a planar surface such as a deck. The mounting bracket is used with posts which include an inner support integrally formed with an adjustment plate and having a vinyl sleeve slipped thereover. The mounting bracket comprises a trim assembly which includes a peripheral wall and a movable portion disposed inwardly of the peripheral wall. The movable portion may be one or more flexible tabs formed in a floor of the trim assembly, a base plate inserted into abutting contact with the floor of the trim assembly or one or more flexible tabs formed in a base plate which is then inserted into a recessed area in the trim assembly. The movable portion is moved relative to the peripheral wall of the trim assembly by an adjustment device. In the preferred embodiment of the invention, the adjustment devices comprise a plurality of bolts that are selectively rotatable in one or more of a first and a second direction.

Abstract: A bushing for assembling an exhaust duct liner with an exhaust duct in a gas turbine engine comprises a body, a bushing opening and a first tab. The body is insertable into a duct opening in an exhaust duct. The bushing opening receives a shaft of a liner fastener, wherein the fastener is connectable with a duct liner. The first tab extends into the duct opening and prevents rotation of the liner fastener.

Abstract: A tool creates a fastener-receiving cavity within a foam-filled structure that includes a panel with a slot for receiving the fastener and foam backing that is cast in place against on the underside of the panel. The tool includes a clip and a plunger. The clip is inserted into the slot and has legs joined by a hinge. The plunger is inserted between the legs to spread the legs and fills the space between the spread-apart legs that would otherwise become filled with foam. After the foam is cast, the plunger is removed so that the legs can be returned to a closely spaced relationship and the clip is removed from the slot, leaving a cavity for subsequently receiving a fastener.

Abstract: Closed loop compensation for a deformable mirror having an array of spaced actuators is achieved by: mapping an array of spaced sensors in optical space to reside between pairs of the actuators; focusing sub-apertures of a wavefront from the deformable mirror onto individual ones of the spaced array of sensors; setting a first actuator to an adjusted stroke position; and adjusting the stroke of subsequent actuators to locate, to a pre-established position, the focused sub-aperture on a sensor in the pathway between each particular subsequent actuator and a neighboring previously adjusted portion of the mirror to compensate for sub-aperture tilt while maintaining relative phase between sub-apertures.

Abstract: An electric screen for a projector is provided. The electric screen utilizes a photo-electric conversion apparatus to convert received photon energy into electric energy and stores the electric energy in a storage battery. A motor is driven by the electric energy stored in a storage battery to extend or retract a screen. The electric screen further has a switch, the electric screen cooperates with the projector more efficiently.

Abstract: Multiple pixels within a pixel array share a common output line. Each output line from the array is connected to one or more storage elements. Each of the storage elements receives a counter signal corresponding to levels of a reference voltage within each of the pixels. When an output line signal reaches a predetermined value, a storage element receiving that predetermined value latches the current value of the counter signal. Outputs from pixels of multiple columns in the array may be time-multiplexed onto the output lines or may form a serial scan chain connected to a single output line.

Abstract: An image sensor array includes a substrate having at least three image sensors located therein. The image sensor array also includes a blue filter positioned proximate to the first image sensor; a green filter proximate to the second image sensor; and a red filter proximate to the third image sensor A first microlens is positionally arranged with the blue filter and the first image sensor; a second microlens is positionally arranged with the green filter and the second image sensor; and a third microlens is positionally arranged with the red filter and the third image sensor. The first microlens has a larger effective area than the second microlens, and the second microlens has a larger effective area than the third microlens.

Abstract: Dynamic range of a differential pixel is enhanced by injecting, synchronously or asynchronously, a compensating offset (?COMP) into a differential signal capacitor whenever magnitude of the differential signal across the capacitor exceeds a predetermined value. Positive and negative magnitudes of ?COMP need not be equal. The number (N) of ?COMP offsets made is counted. Effective differential signal capacitor voltage V(t)=Vo±N·?COMP, where Vo is capacitor voltage. In other embodiments magnitude of ?COMP in a sequence of compensations can differ, and the sum total of compensations in recorded. Differential pixel signal/noise ratio is increased by dynamically maximizing operational amplifier gain AG for each differential pixel.

Abstract: A system and apparatus for controlled fusion in a field reversed configuration (FRC) magnetic topology and conversion of fusion product energies directly to electric power. Preferably, plasma ions are magnetically confined in the FRC while plasma electrons are electrostatically confined in a deep energy well, created by tuning an externally applied magnetic field. In this configuration, ions and electrons may have adequate density and temperature so that upon collisions they are fused together by the nuclear force, thus forming fusion products that emerge in the form of an annular beam. Energy is removed from the fusion product ions as they spiral past electrodes of an inverse cyclotron converter. Advantageously, the fusion fuel plasmas that can be used with the present confinement and energy conversion system include advanced (aneutronic) fuels.

Abstract: A system for capturing color images using monochrome image sensors is herein disclosed. Differences in monochrome pixel intensity are correlated with color using known reflection/transmission ratios of a beam splitter.

Abstract: Image data in an image scanner is examined to determine whether lines (light or dark) are present in the image data. By examining whether the lines are present in image data for multiple colors, and whether calibration gains for corresponding photosensors are normal, it can be determined whether the lines & likely caused by a surface defect, on a calibration target, or on a platen, or on an image being scanned.

Abstract: A package for an image sensor and an identification module is disclosed. The package for image sensor and identification module includes a substrate having an image sensing device, a central processor and a memory thereon and a holder having a window which is onto the image sensing device, wherein the holder is mounted on the substrate and seals the image sensing device, the central processor and the memory.

Abstract: An image sensor module includes a substrate having a central protrusion formed on an upper surface thereof, an optical sensor chip disposed on the central protrusion and electrically coupled to the substrate, and a lens module disposed on the upper surface of substrate at a location outside the central protrusion. The lens module has a cavity for receiving the optical sensor chip. The central protrusion of the substrate fits to the opening of the cavity of the lens module.

Abstract: Radiation systems, including apparatuses and methods, for providing multiple independent RF electron accelerators with RF power from a single RF generator. The radiation systems may be employed in radiation treatment systems for treating subject objects by irradiating them from different directions and in inspection systems for producing images of the contents of a container or other volume in multiple planes using RF electron accelerators that receive RF electromagnetic power from a single RF generator. The radiation systems include RF drive subsystems each having a 3 dB directional coupler connected between an RF generator and RF electron accelerators. Each 3 dB directional coupler divides RF electromagnetic power received from the RF generator into equal or unequal portions for delivery to respective RF electron accelerators.

Abstract: A liquid trap (10), in particular, for collecting liquids a vacuum device is described, with a trap container (11), which has an inner space (13) and an inflow element (13), through which liquid can enter from an outer space (20) of the liquid trap (10) into the inner space (12) of the trap container (11), whereby the inflow element (13) is formed by an inlet channel (15) in a wall (14) of the trap container (11) and the inlet channel (15) has an inner diameter (D) with D<2 mm and an inner length (L) with L<4 mm.

Abstract: A trapping position 30 is defined on a substrate 1, and an electrode pattern 2 is formed on the substrate 1, having a first pair of electrodes 21 including electrodes 22 and 23 formed at positions opposite each other with the trapping position 30 placed therebetween along a diagonal x-axis, and a second pair of electrodes 26 including electrodes 27 and 28 formed at positions opposite each other with the trapping position 30 placed therebetween along a y-axis orthogonal to the x-axis. The atomic device alternately switches between a first state and a second state to trap a neutral atom at the trapping position 30; in the first state, the electrode 22 of the first pair of electrodes 21 is set at a positive potential +V0 with respect to a reference potential and the electrode 23 is set at a negative potential ?V0, and in the second state, the electrode 27 of the second pair of electrodes 26 is set at the positive potential +V0 and the electrode 28 is set at the negative potential ?V0.

Abstract: Provided is a method for processing data from a mass spectrum generated from a sample, which method comprises: (a) selecting a first peak in the mass spectrum; (b) selecting a first monoisotopic reference ion having a first charge state, which first reference ion could contribute to the first peak; (c) for one or more other isotopic forms of the first reference ion determining one or more further expected peaks in the mass spectrum; (d) comparing one or more of the determined further expected peaks with the mass spectrum to determine whether there are one or more peaks present in the spectrum that match the one or more determined further expected peaks; (e) if one or more of the determined further expected peaks match one or more of the peaks in the mass spectrum, designating the first peak as a data peak, and optionally designating the one or more peaks present in the spectrum that match the one or more determined further expected peaks as data peaks; (f) if the determined further expected peaks do not match

Abstract: Particular aspects provide novel methods for analysis of ion populations, the methods comprising filtering and selecting an ion population using a low-field dual-gate ion mobility spectrometer comprising a drift tube, the spectrometer operating at a pressure of at least 100 Torr, to provide mobility-selected ions. Certain aspects comprise: (i) subsequently accumulating the low-field selected ions in an ion trap (e.g., an MS ion trap) and mass spectrometry analysis; (ii) introducing the low-field selected ions into a high-field ion mobility spectrometer for separating thereby (optionally followed by mass spectrometry); and (iii) introducing the low-field selected ions into an ion trap mass spectrometer, and subsequently into a second low-field ion mobility spectrometer (e.g., a non-dual gate spectrometer operating at less than about 100 Torr). Additional aspects provide novel apparatus and combination thereof for performing the disclosed methods.

Abstract: In an RF ion trap mass spectrometer, selected parent ions are fragmented by collisions or electrons and a spectrum of the ion fragments is measured. The measured fragment ion spectrum is then analyzed for the presence of a dominant ion species and, when a dominant ion species is present, selected parent ions are fragmented and a spectrum of the ion fragments is again measured, but with an additional collision excitation of the dominant ion species. The resulting daughter ion spectrum is qualitatively improved.

Abstract: An imbalanced radio frequency (RF) field creates a retarding barrier near the exit aperture of a multipole ion guide, in combination with the extracting DC field such that the barrier provides an m/z dependent cut of ion sampling. Contrary to the prior art, the mass dependent sampling provides a well-conditioned ion beam suitable for other mass spectrometric devices. The mass selective sampling is suggested for improving duty cycle of o-TOF MS, for injecting ions into a multi-reflecting TOF MS in a zoom mode, for parallel MS-MS analysis in a trap-TOF MS, as well as for moderate mass filtering in fragmentation cells and ion reactors. With the aid of resonant excitation, the mass selective ion sampling is suggested for mass analysis.

Abstract: Systems, methods, and computer program products useful in controlling the fragmentation of ions. Control of fragmentation is achieved by varying the collision energy imparted to precursor ions.

Abstract: The invention provides a probe and a method of making the probe that is removably insertable into a gas phase ion spectrometer, the probe comprising a substrate having a surface and a hydrogel material on the surface, the hydrogel material comprising binding functionalities for binding with an analyte detectable by the gas phase ion spectrometer. The invention also provides a probe and a method of making the probe that is removably insertable into a gas phase ion spectrometer, the probe comprising a substrate having a surface and a plurality of particles that are uniform in diameter on the surface, the particles comprising binding functionalities for binding with an analyte detectable by the gas phase ion spectrometer.

Abstract: An ITMS includes an inlet for receiving a sample that will be tested for a substance of interest. The inlet communicates with an ionization chamber and a drift chamber communicates with the downstream end of the ionization chamber. A first grid electrode extends across the downstream end of the ionization chamber and a second grid electrode is slightly downstream from and parallel to the first grid electrode. A slight potential bias is applied to the first grid electrode to hold the ions in the potential well between the first and second grid electrodes. However a pulse is applied periodically to the first grid electrode to accelerate ions into the drift chamber. The accumulation of the ions in the potential well prior to generation of the pulse results in a thinner band of ions ejected into the drift chamber and hence achieves higher resolution.

Abstract: A base plate for mass spectrometry analysis is disclosed, which is used in a method in which a substance immobilized on a surface of the base plate is desorbed from the surface by application of laser light thereto and the ion of the desorbed substance is captured for mass spectrometry analysis. The base plate includes, on at least a portion of the surface thereof, a roughened metal surface capable of exciting local plasmon when exposed to laser light. The roughened metal surface is formed, for example, by forming numerous micropores in a surface of an alumina layer and filling gold particles in the micropores. Each gold particle has a head portion having a size larger than a diameter of the micropore and projecting from the surface of the alumina layer. Use of this base plate allows use of lower-power laser light.

Abstract: In a method for increasing the kinetic energy of an ion in a linear electrode structure, axial motion of the ion is constrained substantially to a selected axial end the electrode structure. The ion is driven to move axially from the selected end toward the other end and to reflect back toward the selected end. Constraining may be effected by adjusting one or more DC voltages applied to the ends and a central region of the electrode structure to create an axial potential well in the selected end. Driving may be affected by adjusting the DC voltage applied to the selected end to a magnitude greater than the value applied during the constraining step. The constraining and driving steps may be repeated a number of times. The method may be performed in connection with collision-induced dissociation.

Abstract: A device for measuring exposure to radiations including at least a component for detecting photons including at least a component for detecting photons or particles associated with at least one circuit for acquiring and counting detection events. The response curve of the number of counted events versus the number of photons or particles sensed by each detection component is a monotonous increasing curve.

Abstract: A two-axis micro scanner is provided in which horizontal driving required for high frequency motion uses a vertical comb-type electrode structure and vertical driving required for low frequency motion uses a piezo-actuator. The micro scanner includes: a frame; a horizontal driving unit including a micro mirror, a plurality of vertical moving comb-electrodes formed parallel to each other along opposite sides of the micro mirror, a plurality of vertical static comb-electrodes formed to alternate with the moving comb-electrodes; and a vertical driving unit including a plurality of cantilevers extending from the frame and respectively connecting opposite ends of the horizontal driving unit to support the horizontal driving unit. A piezo-actuator is installed on an upper surface of each of the cantilevers, wherein the cantilevers are upwardly/downwardly bent according to contraction/expansion of the piezo-actuators.