Abstract: Laundry articles (20) are spread out by means of what are known as input machines in front of a feed conveyor (27) which feeds the spread-out laundry article (20) to a mangle. The respective laundry article (20) is previously fed by a transfer device (23) to a draw-on device (24) onto which the laundry article (20) is drawn. In known input machines of this type, relatively complicated transfer devices (23) are provided. According to the invention, the transfer device (23) is provided with a rectilinear conveying section ascending to the draw-on device (24). The laundry article (20) is thereby transported to the draw-on device (24) by the transfer device (23) in the plane in which it is transferred to the transfer device (23). Such a transfer device (23) needs to have only a simple set-up.

Abstract: Provided is a substrate-processing apparatus including a plurality of process chambers, a buffer unit, and a transfer member. The transfer member transfers the substrate between the process chambers and the buffer unit, and collects the substrates processed in at least two of the process chambers where processes are simultaneously finished, to transfer the processed substrates to the buffer unit at once. Accordingly, a number of times during which the transfer member transfers substrates is decreased, so that the substrate-processing apparatus reduces the process time and improves the productivity.

Abstract: The present invention is directed to a method and container locator means for moving a container among one or more work-flow stations within an apparatus. The apparatus of the present invention may include a means for automated loading, a means for automated transfer and/or a means for automated unloading of a container (e.g., a specimen container). In one embodiment, the apparatus can be an automated detection apparatus for rapid non-invasive detection of a microbial agent in a test sample. The detection system also including a heated enclosure, a holding means or rack, and/or a detection unit for monitoring and/or interrogating the specimen container to detect whether the container is positive for the presence of a microbial agent. In other embodiment, the automated instrument may include one or more, bar code readers, scanners, cameras, and/or weighing stations to aid in scanning, reading, imaging and weighing of specimen containers within the system.

Abstract: A system for loading workpieces into a process chamber for processing in a matrix configuration includes a conveyor configured to transport multiple workpieces in a linear fashion. A workpiece hotel is configured to receive the multiple workpieces from the conveyor. The workpiece hotel comprises a matrix of cells arranged in N columns and M floors. A pick blade is configured to insert into the hotel and retract from the hotel in order to unload a plurality of substrates from a first floor into a single row of the pick blade, and to repeat the unloading operation to form a matrix comprising a plurality of rows of substrates disposed on the pick blade. In one example, the workpiece hotel has a staggered configuration that provides individual accessibility of each hotel cell.

Abstract: A geometric end effector system for use on a robot. The system includes a platform and a frame secured to the platform. At least one base is arranged at a predetermined position on the frame. The system also has an anchor mount secured to the base and a component connected to an end of the anchor mount by a collar assembly. A key is arranged between the component and the anchor mount.

Abstract: A device including a sample compartment, a coil and an arm for mechanical manipulation of a sample vessel placed in the sample compartment and containing a sample is described. In at least one embodiment, the coil is surrounding the sample compartment and the sample compartment has an opening for insertion and removal of the sample vessel. A method, using the device according to at least one embodiment of the invention for detection of magnetic permeability, relative magnetic permeability or relative magnetic susceptibility, is also described.

Abstract: A system for managing semiconductor production includes a conveyor to convey a wafer carrier to or from an overhead hoist transfer system. The system also includes a cross-system transport apparatus to transfer the wafer carrier between the conveyor and an overhead shuttle system.

Abstract: Manufacturing cost or energy consumption of a substrate processing apparatus can be reduced. The substrate processing apparatus includes a substrate loading/unloading unit (a substrate transit chamber 12) that transfers a substrate 2 accommodated in a carrier 3; a substrate transfer chamber 14 (25) communicating with the substrate loading/unloading unit via a substrate loading/unloading port 37 (39); a plurality of substrate processing chambers 15 to 24 (26 to 35) arranged along the substrate transfer chamber 14 (25); a substrate transfer device 36 (38) provided in the substrate transfer chamber 14 (25) and configured to transfer the substrate 2 between the substrate loading/unloading unit and the substrate processing chambers 15 to 24 (26 to 35); and a clean air flowing unit 41 (42) that allows clean air to flow along the substrate transfer chamber 14 (25).

Abstract: A system for feeding glass sheets to a processing line for processing the sheets has a sheet pickup station; a number of movable carriages which are moved into the pickup station and each support one or more packs of sheets positioned substantially on edge; a movable loading machine for removing the sheets off the carriages and transferring them to the processing line; a store for housing the carriages with respective packs of sheets; and a supply station for restocking the store and which is separate from the pickup station.

Abstract: A disclosed process module includes a substrate receiving part on which a substrate is placed and a process is carried out with respect to the substrate on the substrate receiving part; and a substrate transfer mechanism including plural substrate holding members, each of which can be positioned in a first position where the substrate is transferred to/from a substrate transfer apparatus provided outside the process module and a second position above the substrate receiving part, wherein each of the substrate holding members can hold the substrate.

Abstract: A system adapted to exchange wafer carriers between an overhead transport mechanism and a platform is provided. The system employs a wafer carrier having at least one handle extending therefrom, an overhead transfer mechanism, a transporter coupled to the overhead transfer mechanism and adapted to move therealong and having a wafer carrier coupling mechanism adapted to couple to the at least one wafer carrier handle, a platform positioned below the overhead transfer mechanism such that wafer carriers traveling along the overhead transfer mechanism travel over the platform, and an actuator coupled to the platform and adapted so as to elevate the platform to an elevation wherein the loading platform may contact the bottom of a wafer carrier coupled to the overhead transfer mechanism.

Abstract: Embodiments of the present invention provide apparatus and method for heating one or more substrates during transfer. One embodiment provides a robot blade assembly for supporting a substrate or a substrate carrier thereon. The robot blade assembly comprises a base plate, an induction heating assembly disposed on the base plate, and a top plate disposed above the induction heating assembly. Another embodiment provides an induction heating assembly disposed over a transfer chamber having a substrate transfer mechanism disposed therein.

Abstract: A method and an apparatus for producing plastic bottles, including a blow molding machine, a labeler, at least one further treatment machine, and transfer starwheels provided and arranged for the machine-to-machine transportation of the bottles in such a way that the bottles are transported without buffers between the at least three machines.

Abstract: The present invention relates to a seal carrier plate and a system of interchangeable chambers. A seal carrier plate is provided, wherein the seal carrier plate is adapted for being located between a first chamber and a second chamber and adapted for sealing the first chamber with respect to the second chamber from the environment, and wherein the seal carrier plate comprises an opening for transferring of substrates from the first chamber to the second chamber. Further, a system of interchangeable chambers is provided, wherein the chambers are adapted for accommodating a seal carrier plate on at least one side of the chamber with an opening.

Abstract: A method for transporting inventory items includes moving a mobile drive unit to a first point within a workspace. The first point is a location of an inventory holder. The method further includes docking the mobile drive unit with the inventory holder and moving the mobile drive unit and the inventory holder to a second point within the workspace. The second point is associated with conveyance equipment. The method further includes moving the inventory holder to a third point within the workspace using the conveyance equipment.

Abstract: A substrate transfer processing apparatus capable of processing a substrate at high speed is provided. A mounting table on which a substrate is mounted includes a plate-shaped main body and a recessed part formed in a rear surface of the plate-shaped main body. Since the mounting table is lightweight as compared to the mounting table before the recessed part is formed therein, the load on a motor is small and the running cost is low even when the mounting table is moved at high speed. Because the plate-shaped main body is made of granite, the mounting surface can be made flat and smooth by polishing. Since the mounting surface is flat and smooth, the accuracy in positioning the substrate is high.

Abstract: A photo spinner apparatus, including a spin coater for coating a plurality of wafers with photoresist, a bake device for hardening the photoresist coated by the spin coater, a developer for developing the photoresist hardened in the bake device, a transfer unit for transferring the plurality of wafers between the developer, the bake device, and the spin coater, and an indexer including a wafer carrier loader to vertically stack a plurality of wafer carriers into which the plurality of wafers transferred by the transfer unit are loaded.

Abstract: A batch processing platform used for ALD or CVD processing is configured for high throughput and minimal footprint. In one embodiment, the processing platform comprises an atmospheric transfer region, at least one batch processing chamber with a buffer chamber and staging platform, and a transfer robot disposed in the transfer region wherein the transfer robot has at least one substrate transfer arm that comprises multiple substrate handling blades. The platform may include two batch processing chambers configured with a service aisle disposed therebetween to provide necessary service access to the transfer robot and the deposition stations. In another embodiment, the processing platform comprises at least one batch processing chamber, a substrate transfer robot that is adapted to transfer substrates between a FOUP and a processing cassette, and a cassette transfer region containing a cassette handler robot. The cassette handler robot may be a linear actuator or a rotary table.

Abstract: An apparatus for transferring objects includes a receiving arrangement, a transferring arrangement for transferring an object towards the receiving arrangement, the transferring arrangement having a recess for receiving the object, the recess being defined by a wall arrangement, and a driving arrangement arranged for moving at least part of the wall arrangement so as to change a passage section of the object through the recess.

Abstract: A die sorter for sorting a semiconductor dice is provided. The die sorter comprising of a rotary turret module (19) with indexing mechanism for die sorting; the rotary turret module (19) is further coupled with a motor for generating rotating movements. A plurality of flipper modules (20) with rotary actuating means (72) is coupled with the rotary turret module (19) for enabling the flipping process of the flipper module (20). In one embodiment, a plurality of shutter openers (55) are operatively coupled to the flipper module (20) to move the cavity shuttle (93) to open position for pick and place operation of die. In one preferred embodiment, a plurality of cavity releasing means (57) are operatively coupled to the flipper module (20) to unlock the cavity holder (74) prior to activate the flipping mechanism, whereby the cavity releasing means (57) is a cam mechanism which is mounted on the rotary turret module (19).

Abstract: Methods and apparatuses for a batch processing system with in-line interfaces are provided to batch processing substrates in an in-line processing facility. In an embodiment, the batch processing system comprises carrier assembling and carrier disassembling stations interfacing the in-line path and the batch processing stations.

Abstract: A stage apparatus includes a stage over which a substrate is to be transferred, and a levitation mechanism which levitates the substrate over the stage. The stage includes a plurality of gas spray ports (16a) to spray a gas for levitating the substrate (G), and a plurality of suction ports (16b) to take in air sprayed from the gas spray ports (16a). The plurality of gas spray ports (16a) and the plurality of suction ports (16b) are set not to be arranged on straight lines parallel to a substrate transfer direction in a predetermined length along the substrate transfer direction.

Abstract: A pallet transfer system capable of smoothly transferring a pallet between a machine tool and a pallet conveying device is provided. The pallet transfer system includes an intermediated station to temporally place a pallet between a front ward position of a pallet stand-by position and the pallet stand by position. The pallet on a conveying plate at a stand-by position is carried to a temporary placing position by horizontally moving the conveying plate. Then the pallet is transferred to the intermediate position by being supported by lift arms which are raised from the conveying plate. Further, the pallet, supported by the lift arms, is transferred from the intermediate station to a stacker crane by advancing the stacker crane toward the intermediate station side and entered into an entering space below the pallet.

Abstract: A feed and removal system for a machine tool has a supply device and a removal device for workpieces. Arranged at the front side of the machine tool are loading arms and unloading arms, which are pivotable about vertical pivot axes and, at their free ends, carry workpiece carrying devices.

Abstract: A device for transporting a magnetic head, a device for inspecting a magnetic head, and a method for manufacturing a magnetic head are provided. The device for transporting a magnetic head is capable of freely changing a posture of a thin film magnetic head when transporting a row bar-shaped thin film magnetic head. The transporting device for transporting a slender rectangular plate-like, that is, row bar-shaped magnetic head, cut from a wafer is capable of performing vertical installation and horizontal installation. The transporting device for transporting a slender rectangular plate-like, i.e., row bar-shaped magnetic head, is capable of performing the vertical installation and horizontal installation, and changing the posture of the magnetic head from vertical installation into horizontal installation and from horizontal installation into vertical installation when transporting the magnetic head between processes.

Abstract: A substrate processing system includes a processing unit, a substrate loading unit, a substrate unloading unit, and a carrying unit. A carrying device has a constitution in which a suction portion suctioning and holding a substrate is rotatable about an arm portion provided in a base portion and the substrate is rotated in the state where the substrate is held by a holding portion. A coating device has a constitution in which a liquid material is ejected from a nozzle to both surfaces of the substrate rotating in an upright state.

Abstract: An apparatus for manufacturing capable of reducing footprint and a working time for loading substrates as short as possible, and a method using the same are disclosed. The apparatus includes a cassette to accommodate a plurality of substrates, a stocker in which the cassette is loaded, a process progressing unit to receive the respective substrates in the cassette and to perform a process, a loader having at least two hands and disposed between the stocker and the process progressing unit to receive and supply the respective substrates accommodated in the cassette on the stocker to the process progressing unit, and at least one withdrawing unit to withdraw and supply the respective substrates from the cassette to at least one of the hands in the loader.

Abstract: A substrate transfer apparatus, for transferring a substrate from a first module to a second module, includes a moving base having a Y-motion axis for moving the moving base in Y-direction, and a substrate holding member mounted to the moving base via X-motion axis so as to move relative to the moving base to be in an advanced position and a retracted position relative to the moving base. The X-motion axis operates when the Y-motion axis is operating, if the X-motion axis must be parallel to the Y-motion axis when transferring the substrate from the substrate holding member to the second module.

Abstract: Methods and apparatuses for integrated cleaning of objects comprising a sequence of wet cleaning and vacuum drying in a same process chamber. The present integrated cleaning process can eliminate moving parts, improving the system reliability. Vacuum decontamination can be included for degassing and decontaminating the cleaned objects. In an embodiment, a cleaner system combines various movements into an integrated movement to be handled by a robot, for example, to improve the throughput. For example, an integrated robot movement comprising picking up a closed container from the input load port, moving both the lid and body together, and then depositing the body and lid separately into the appropriate positions in the cleaner to be cleaned.

Abstract: A method and an apparatus for transferring a substrate are described. In the method, a substrate is provided on the surface of a first plate at a first position, the first plate is moved from the first position to a second position in an upper space of a second plate, the substrate is lifted away from the surface of the first plate, the first plate is moved away from the second position, and the substrate is put on the surface of the second plate from the upper space. The apparatus includes a first plate and a second plate each having a surface for carrying the substrate, wherein the first plate can be moved between the first position and the second position.

Abstract: A system and a method for moving a wafer during scanning the wafer by an ion beam. The proposed system includes an extendable/retractable arm, a holding apparatus and a driving apparatus. At least a length of the extendable/retractable arm is adjustable. The holding apparatus is capable of holding a wafer and is fixed on a specific portion of the extendable/retractable arm. Furthermore, the driving apparatus is capable of extending and/or retracting the extendable/retractable arm, such that the holding apparatus is moved together with the specific portion. In addition, the proposed method includes the following steps. First, hold the wafer by a holding apparatus fixed on a specific portion of an extendable/retractable arm. After that, adjust a length of the extendable/retractable. Therefore, the holding apparatus, i.e. the wafer, can be moved by the extension/retraction of the extendable/retractable arm.

Abstract: The invention is an operating device (1, 100, 200) comprising means (2) suited to move a support (3) with an alternating motion (A) around an axis (4). The means (2) comprise one or more permanent magnets (5) arranged along a section of a circumference that is concentric with the axis (4) and a winding (6) controlled by a control unit (7). The invention also concerns a machine for checking and inspecting containers.

Abstract: The invention relates to a system for handling slides comprising a tray moving on a carriage provided with seats for the slides and with a tray moving mechanism; a slide loading arm; and a slide holding frame provided with a slide loading arm driving motor, wherein the slide holder (30) is provided with slide holding elements; there are outstretched Maltese crosses (13) on the lower side of the tray (6 ) of the slide feeder (1) and a crank (14) is arranged in the carriage (4), opposite to and parallel with the crosses (13), said crank being coupled to said crosses; said slide loading arm (9) is arranged movably and tillable above (30) and a supporting plate (11) is arranged movably and tiltable below the slide holder, said supporting plate cooperating with said slide loading arm. The slide holding frame (7) is provided with lifting means for tilting the slide loading arm (9) and the supporting plate (11), said lifting means being actuated by controlling means arranged on the disk (15) of the crank (14).

Abstract: To provide a chip supply pallet preventing destruction of a chip and preventing a reduction in a productivity from being brought about in exchanging a wafer sheet, the chip supply pallet includes a first member 33 having a tension ring 51 brought into contact with a wafer sheet from a lower side, and a fixing member 54 of fixing a ring frame holding the wafer sheet on an inner side on a lower side of the wafer sheet brought into contact with the tension ring 51, and a second member 34 having a fixed portion for fixing to a predetermined position of a chip supply apparatus and a held portion 36 of being held when the chip interchanging pallet 3 is transferred, and the first member 33 is configured to be able to rotationally displace relative to the second member 34 fixed to the predetermined position of the chip supply apparatus.

Abstract: A mailpiece transfer system uses a transfer box to unload a plurality of mailpieces from an open tray, while maintaining an orientation alignment of the flat items. The tray is placed in the transfer box, after which the transfer box, holding the tray, is rotated to cause the mailpieces to rest against a cover of the transfer box. The tray is then removed, and the transfer box rotated again, allowing the substantially flat items to rest against a bottom of the transfer box, but without the tray. The mailpieces are then guided to a next workstation. The mailpieces may be edged for delivery to the next workstation.

Abstract: A feeder device is disclosed for insertion machines for printed circuit boards, including a housing, a drive motor, a gear unit and a pin wheel engaging with a transport tape. The drive motor and the gear unit are arranged on a common side wall of the housing such that the axles thereof are perpendicular to the side wall. A narrow structural design of the feeder device can be provided, which also allows easy mounting. To this end, the rotor of the drive motor is rotatably mounted on only one axle which is fixedly connected to the side wall of the housing.

Abstract: An apparatus is provided that includes a load port for receiving a container that houses a wafer and a detector disposed proximate the load port such that the detector detects a metal characteristic of the wafer. The detected metal characteristic indicates whether the wafer is at a proper location. Also, provided is a method for use in semiconductor manufacture that includes providing a container that houses a wafer, receiving the container in a load port, detecting a metal characteristic of the wafer, and determining whether the wafer is at a proper location based on the detected metal characteristic of the wafer.

Abstract: An automated inspection system for inspecting, sorting and re-coining each of the locking bar, the rack, and the pin of a rekeyable lock cylinder, as well as other small close-tolerance components in an average cycle time of 1.5 seconds. The inspection system includes a high-speed pneumatic sorting matrix which selectively transfers the components into various length measuring stations, camera inspection stations, mechanical gauge stations, and/or coining stations, and then positions the parts at those stations for combined gauge and visual tolerance checking and sorting. Defects are identified by a combination of visual and machine-gauge inspection, and the sorted components are sorted into three bins: rejects; good parts; and parts for coining. The inspection/sorting system is capable of tolerance-checking down to 0.00011811?, with a repeatability of 0.00005906.

Abstract: A system for handling wafers comprising: at least one unload station; at least one intermediate station designed to hold the wafers at an angle; a processing station; and a transfer device configured to move the wafers between the stations. The intermediate station may be configured to receive the wafers in a back-to-back arrangement. An apparatus for handling wafers comprising: on one side, a vacuum gripper configured to grip individual wafers; and, on the other side, a gravity gripper configured to support one or more wafers when positioned beneath the wafers and lifted. A method for handling wafers, comprising: unloading wafers; transferring the wafers to an intermediate station; transferring the wafers from the intermediate station to a processing station; treating the wafers; unloading the wafers from the processing station; and reloading the wafers in a carrier, wherein the wafers are unloaded, transferred and reloaded by a transfer device.

Abstract: A measurement apparatus includes a support frame to support a feed mechanism, an orientation mechanism, a measurement mechanism, a transfer mechanism, and an unloading mechanism. The feed mechanism includes a first holding assembly, a first elevation assembly, a second elevation assembly, and a first clipping assembly. The first elevation assembly and the second elevation assembly are positioned under the holding assembly, and the first clipping assembly is positioned over the holding assembly. The measurement mechanism includes a support stage and at least one calibration head. The transfer mechanism includes at least one pickup head. The orientation mechanism includes a driving member and a securing assembly driven by the driving member. The unloading mechanism has the same structure as the feed mechanism. The disclosure further provides a measuring method using the measurement apparatus.

Abstract: Positioning device to position electronic circuit boards with respect to an operating unit. The device comprises a rotary member which rotates selectively between a first operating position and a second operating position, and a positioning member mounted on the rotary member. The positioning member comprises a frame which is mounted removably on the rotary member, and a strip made of transpirant material on which each board is rested, wherein the strip is wound between a pair of winding/unwinding rollers pivoted on the frame.

Abstract: A printed circuit board (PCB) testing system includes two gear groups, a pair of transmission belts and a driver. The pair of transmission belts geared onto and driven by the two gear groups is parallel and respectively perpendicular to the PCB transmission guideway so as to define a PCB accommodation space therebetween. Each transmission belt includes a plurality of projections. The two gear groups are rotated synchronously and inversely. During operation, the projections on the pair of transmission belts, facing the PCB accommodation space, move down, the projections move away from each other and to the bottom of the corresponding transmission belts, and a PCB supported by the pair of projections drops onto the PCB transmission guideway.

Abstract: A substrate processing apparatus is provided. The apparatus has a casing, a low port interface and a carrier holding station. The casing has processing devices within for processing substrates. The load port interface is connected to the casing for loading substrates into the processing device. The carrier holding station is connected to the casing. The carrier holding station is adapted for holding at least one substrate transport carrier at the load port interface. The carrier holding station is arranged to provide a fast swap section for replacement of the substrate transport carrier from the carrier holding station.

Abstract: In the case of transporting an article to a load port which is occupied by another article, at the time of generating a transportation command, estimated arrival time T1 when the article arrives at the load port and estimated removal time T2 when the article which occupies the load port is removed are compared with each other. If the time T2 is earlier than the time T1, a transportation command for transporting the article to the load port is assigned. If the time t2 is later than the time T1, a transportation command for transporting the article to a buffer on the upstream side of the load port is assigned.

Abstract: A substrate handling structure is provided that is particularly useful with an imaging optical system that images a single reticle to a pair of imaging locations. The principles of the present invention provide substrate handling structures with new and useful metrology structures, and new and useful ways of moving substrates in relation to the imaging locations, that are designed to provide benefits in providing information as to the substrate position as a substrate is being imaged, while reducing the size of the support structure. These features are believed to be important as imaging of substrates in the 450 mm diameter range is developing.

Abstract: A repositionable support (1) includes a stationary portion (2) having a movable portion (3) mounted thereon to move in at least one adjustment direction (4) via a link member (5) associated with an actuator for adjusting the position of the movable portion along the adjustment direction, the link member being associated with a member for holding the movable portion in position relative to the stationary portion. A work station including such a support is also disclosed.

Abstract: A route setting method according to the present invention sets, in a work transfer system including a plurality of work transfer units which connect a plurality of loading places to a plurality of unloading places, a route of the work transfer units to pass a work between a planned loading place and a planned unloading place which are required to transfer the work in the plurality of loading places and the plurality of unloading places. The route setting method includes the steps of setting, based on layout information representing a layout of the plurality of work transfer units, a plurality of candidates of the route between the planned loading place and the planned unloading place, and selecting, based on a predetermined condition, one route from the plurality of candidates of the route set in the candidate setting step.

Abstract: A semiconductor workpiece processing system having at least one processing apparatus for processing workpieces, a primary transport system, a secondary transport system and one or more interfaces between first transport system and second transport system. The primary and secondary transport systems each have one or more sections of substantially constant velocity and in queue sections communicating with the constant velocity sections.

Abstract: Equipment and a method for transporting red-hot coke are provided, which do not need increase in size of a hoist, reinforcement of a CDQ system, and the like, even when the amount capacity of a coke bucket does not correspond to an amount equivalent to the coke amount from one oven chamber. In particular, transporting equipment for red-hot coke, includes: a non-rotary coke receiving car for receiving coke out of a coke oven; a coke bucket for receiving the coke discharged from the coke receiving car; a transporting device for transporting the coke bucket to a hoist position; and a hoist for transporting the coke bucket to a coke dry quenching system.

Abstract: A substrate transfer apparatus that transfers a substrate with respect to a processing apparatus includes a substrate accommodation unit for accommodating a plurality of substrates to be loaded into the processing apparatus in a vertical direction in a multi-stage; a substrate accommodation unit for accommodating a plurality of substrates unloaded from the processing apparatus in a vertical direction in a multi-stage; a substrate holder for transferring the substrates from the substrate accommodation unit to the processing apparatus; a substrate holder for transferring the substrates from the processing apparatus to the substrate accommodation unit. The substrate accommodation unit has an elevating mechanism for moving at least one of the substrate and the substrate holder in a vertical direction relative to each other and the substrate accommodation unit has an elevating mechanism for moving at least one of the substrate and the substrate holder in a vertical direction relative to each other.