Abstract: A toothbrush for cleaning teeth, especially the interproximal region between adjacent, closely spaced or normally contacting teeth, has at least one fin extending from the body of the toothbrush through the bristled head. The fin is a thin, tapering, blade-like member with a distal edge for cleaning teeth by scraping motion. The fin is molded from plastic resin, and is constructed so as to resist buckling loads to tend to penetrate and clean the interproximal tooth surfaces, even to the point of temporarily separating lightly contacting surfaces of adjacent teeth. Various fin embodiments are presented, including one that has an outwardly-biasing loop portion. Methods of use and manufacture and preferred materials are also disclosed.

Abstract: A toothbrush having a novel bristle configuration and trim pattern is described. The bristles of the tufts are of varying lengths and are so arranged to form a concave shape resembling the shape of a rubber prophy cup used by dentists and hygienists for polishing teeth. The individual bristles are of varying length and so placed into or mounted in the head to yield tufts having the same concave shape but without the requirement for trimming the bristle ends. In a variant construction, the upper ends of a number of tufts are so contoured, either by trimming or by insertion of various length bristles, that each tuft upper end has a surface which is a portion of a larger concave surface. Thus in one type of arrangement each tuft has its own prophy brush shape at its upper end. In another type of arrangement there is only one prophy brush shape for the entire head, each tuft making its own partial contribution to the single prophy shape.

Abstract: A dust collector which comprises a long suction fan and a movable filter adaptable to the fan and whose filter permits dust itself caught thereon to function as a three-dimensional filter to thereby enable collection of micro dust.

Abstract: A commercial carpet brush cleaning device that removes built-up accumulations of carpet fibers and associated cleaning compound residue and dirt from a carpet cleaning brush. An elevated machine receiving area is defined having a plurality of arcuately spaced elongated openings therein and corresponding upstanding elongated cleaning tines assemblies are positioned in spaced inter-related relations to the openings. A collection and evacuation chamber below the openings removes the brush waste as it is cleaned by the rotation of the brush on the cleaning tines assembly within the device.

Abstract: The present invention provides a walk-behind mobile sweeper for cleaning dust and collecting garbage from surfaces. The sweeper has a motorized cart maneuverable by a human operator, a flow-through collection apparatus supported on the cart for collecting garbage therein, a suction inlet located forwardly of the collection apparatus and a vacuum blower for creating air suction, the vacuum blower drawing garbage and dust via suction through the suction inlet and into the collection apparatus, wherein the vacuum blower is positioned downstream of the container such that garbage does not enter the vacuum blower. The walk-behind mobile sweeper is easily maneuverable, is compact and not only cleans dust and dirt from surfaces but also collects garbage which is further compacted or compressed within a bag. The sweeper can be configured not only as a walk-behind sweeper but also as a stand-on skateboard sweeper or as a ride-on sweeper.

Abstract: A portable surface cleaning apparatus has a base for movement along a surface to be cleaned and an upright handle pivotally attached to a rearward portion of the base. A fluid dispensing nozzle for applying fluid to the surface and a suction nozzle for picking up fluid and debris from the surface are associated with the base. A clean water holding tank and a detergent holding tank are removably mounted to the handle while a recovery tank is removably mounted to the base. A mixing valve is fluidly connected between the holding tanks and the spray nozzle for changing the mixing ratio of the detergent with respect to the water. The fluid recovery tank includes an integrally molded conduit that extends from the suction nozzle and a mounting for an accessory hose that interrupts the fluid path from the suction nozzle in the conduit and redirects fluid flow through the hose.

Abstract: A doorstop system with an angled lower face comprising a top face in a rectangular configuration with long side edges and short front and rear edges, two side faces in a generally triangular configuration, each side face having a lower horizontal edge, a short vertical front edge, and a large generally vertical rear edge and an angled upper edge. Included is a five-sided front face with a horizontal upper edge and short vertical side edges and two angled lower edges, one lower edge being longer than the other lower edge; a five-sided rear face with a horizontal upper edge and long vertical side edges and two angled lower edges, one lower edge being longer than the other lower edge. Finally, two bottom faces are provided, each bottom face being in a rectangular configuration, one being larger than the other.

Abstract: The multifunctional handle (10) for a movable container, trolley or cart has two lateral, rounded head elements (11) fixed to the trolley (1) and a connecting bow (20) connecting the same having a flat, rounded cross-section (Q). The connecting bow rises in roof-shaped manner from the central area (B1) of the head elements and forms a hand-correct depression (16) towards the head element. This leads to an ergonomically particularly favourable handle for numerous hand positions (P1 to P7).

Abstract: An automatic locking brake shoe device for a double sash window is disclosed which is slidably disposed in the guide channel of the window jamb liner. The brake shoe device interconnects with an associated sash through a laterally projecting sash pin. The automatic locking brake shoe device comprises first and second brake shoe members that are pivotally connected for relative pivotal movement. The first member is connected to the window balance mechanism, and the second member includes a locking member that engages the jamb liner when it is rotated to the locking position. A small spring disposed between the first and second members normally urges the second member into the locking position when the sash is removed. The sash pin engages the second member when the sash is in its sliding position causing the small spring to yield and to attract the second member from the locking position.

Abstract: Pulleys of a block and tackle window balance include hub steps that interact with other components to reduce the introduction of dirt and dust particles into areas vulnerable to wear. The hub steps of some of the pulleys are recesses formed about the axial bores of the pulleys that mate with protrusions on an axle and a washer. The hub steps of other pulleys are protrusions that abut a support plate and heads of rivets that act as axles. The hub steps allow inverse mounting of the window balance so that the balance can be mounted in a shoe channel for movement with a sash of the window, attached to the sash shoe, and the cord can be attached to the jamb or frame, thus increasing sash travel.

Abstract: A resilient hinge arrangement does not utilize a principal hinge but instead includes at least two hinge parts. One or more tilting steps are arranged in series and are constructed from at least two connecting elements, each of which is formed by a rigid pressure element and a tensionally elastic tension element. The connecting element are each attached, via a hinged connection, normally a film hinge, either to intermediate members or directly to the hinge parts. The pressure and tension elements are arranged to be at least substantially shear-resistant with respect to each other through an associated shear element.

Abstract: A low-profile hinge for hingedly joining adjacent door sections of a sectional door. The low profile for the low-profile hinge is attained by using a relatively small diameter hinge pin fabricated from spring steel. The greater strength characteristic of spring steel compensates for the smaller diameter of the spring steel hinge pin to provide a hinge that has a lower profile while maintaining the necessary mechanical strength at a level equal to or greater than a conventional hinge. The spring steel hinge pin is fabricated to be incrementally shorter than the pin tube and the ends of the pin tube are crimped to retain the spring steel hinge pin in the pin tube.

Abstract: The invention is a clasp for jewellery items comprising a female element suitable for housing a protruding element belonging to a male element. Said protruding element is provided with a pair of coupling elements, each one positioned at one end of a pair of shaped rods cooperating with operating means suitable for achieving the caliper-like movement of said rods around a pin that connects them to each other and to the body of said male element in order to obtain the connection or the disconnection of said coupling elements to or from corresponding check elements belonging to said female element.

Abstract: A seat belt lock cover for use with a seat belt having a seat belt release button, for selectively preventing a child from accessing the seat belt release button, comprising a main housing and a cover plate. The main housing has a pair of side surfaces, a top surface and an elongated channel for allowing the seat belt to pass through the housing. The top surface has an open portion for selectively allowing access to the release button of the seat belt extending through the elongated channel. The cover plate selectively covers the open portion and prevents access to the release button. A pair of release latches, located on opposite side surfaces, prevent the cover plate form opening unless operated simultaneously by a large, adult-size hand.

Abstract: A hook for pleating and hanging curtains, composes of preferably of a rectangular a plate having first and second edges opposed from each other, opposed parallel edges, and a series of grooves (2, 2', 3, 3', 4, 4', 5, 5') symmetrical about an axis (6) of the plate; the series of symmetrical grooves define two end grooves, two central grooves and a strip defining a small hanging leg, fabric of the curtain is adapted to be inserted through the series of symmetrical grooves in a labryrinthine way for forming a broad pleat and a fastening of the curtain.

Abstract: A tubular knit fabric descending from a knitting head is spread and flattened by a fabric spreader disposed within the fabric just above a pair of take-down rolls forming a nip through which the fabric passes. The spreader comprises a generally flat frame formed by tubular members. The tubular members include a pair of U-shaped sections having open ends spaced apart and facing each other, and having closed ends defining opposite fabric-engaging edge surfaces of the frame. First legs of the U-shaped sections are telescopingly and adjustably joined to a tubular center section, the center section and first legs collectively forming a roll-engaging member for pressing the fabric against the take-down rolls. The width of the spreader is adjusted by releasing screws fixing the center section to the U-shaped sections, sliding the U-shaped sections inward or outward, and using the screws to fix the frame at the new width.

Abstract: A funerary urn comprises a top, a bottom and side walls connecting the side and bottom. The urn has an open area within a first storage space, the opening having a volume of between 0.25 and 2.5 cubic feet being defined by the top, bottom and side walls. The top, bottom and side walls have openings therein which allow passage of water into the storage space and allow air to pass out of the storage space. The urn, when it contains the ashes of a cremated animal and then immersed in water will attain a specific gravity of greater than 1.0 within three minutes. At least 80% by weight of the top, bottom and side walls consist essentially of materials which would decompose, degrade, dissolve or disperse in water so that the urn will lose its structural integrity within twelve months of continued immersion in water at 20.degree. C.

Abstract: A method for disposing of a radioactively contaminated steam generator with a multiplicity of U-shaped heating tubes fixed in a tube plate, includes cutting off the heating tubes above the tube plate, cutting open the dome of the steam generator and gripping the heating tubes one after the other at the U-bend with force-locking measures. Once gripped, each heating tube is drawn through crushing rollers to achieve an initial reduction in size and to reduce a bend radius of the tube and is then passed into a press where it is pressed flat.

Abstract: A novel system and method for anchoring a suture or other cord-like element to a bone or other workpiece. The system comprises a drill for forming an undercut hole in a bone or other workpiece, an anchor for securing a suture or other cord-like element in the undercut hole in the bone or other workpiece, and an inserter for deploying the anchor in the undercut hole in the bone or other workpiece.

Abstract: A modular fence system. The system includes fence planks designed for insertion into open channels of upper and lower fence rails. The fence rails are supported in a horizontal orientation between intermittent fence posts, with the fence planks extending vertically between the rails. The planks include resilient protrusions at their upper ends. The protrusions of the planks are designed to fit into internal passages formed in the open channels of the upper fence rail, into engagement with ledges defining the passages, to inhibit inadvertent removal of the planks from the upper rail.

Abstract: The metal-to-metal sealing system includes a first seal configuration on one member of the connection and a second seal configuration on the other member. Each seal configuration includes an annular groove and an adjacent annular tooth. The annular groove and annular tooth form three frustoconical surfaces with the groove having an annular undercut surface and the annular tooth having an annular shoulder surface. A seal cylindrical surface and a pre-ramp cylindrical surface extend from the mouth of the groove and a frustoconical ramp forms the transition surface between the seal and pre-ramp cylindrical surfaces. Further, at the base of the outer side of the annular tooth, there extends a cylindrical surface along the main body of the member. Upon makeup of the connection, the ramps and seal cylindrical surfaces guide and align the seal configurations. Initially the center frustoconical surfaces interferingly engage.

Abstract: A media rework tool includes a gripper assembly having a plurality of opposing arms for grasping predetermined discs within a disc pack. The gripper assembly raises the predetermined discs and any intermediate spacer rings upward for temporary storage on a media guide to allow the remainder of the disc pack to be reworked, such as for replacement of a defective disc or spindle motor. A method of reworking a disc pack includes centering the disc pack between opposing arms of a gripper assembly and beneath a cylindrical media guide. A plurality of the opposing arms close to grasp a predetermined number of discs, and the gripper assembly is raised to transfer the grasped discs, and any intermediate spacer rings, from the spindle motor to the media guide. Following reworking of the remainder of the disc pack, the spindle motor is returned to its centered position relative to the media guide and the gripper assembly.

Abstract: A method for fabricating a reed relay which includes a magnetically actuated switch and a bobbin. The switch defines an exterior surface and includes two terminals, and the switch provides a relatively low electrical resistance path between the two terminals when closed and provides a relatively high electrical resistance path between the two terminals when open. The bobbin defines an interior surface and an exterior surface, and the bobbin is disposed around the switch so that the bobbin interior surface contacts substantially all of a predetermined portion of the switch exterior surface.

Abstract: A workpiece W2 is grasped by inserting a first jig into a concave portion which is formed in a rotor forming process, and by interfitting a second jig to a convex portion which is also formed in the rotor forming process. Thereby, the workpiece W2 is firmly grasped, and a groove-forming roller can be strongly pressed into the workpiece W2. A time for forming a pulley groove is shortened, and a manufacturing cost thereof is reduced.

Abstract: A rod constituting a suspending rod is automatically connected or detached, and a rod is easily conveyed between a position where the rod is delivered to rod attaching/detaching means and a position where the rod is contained. A plurality of jacks are operated in synchronism. In the upper part of a boiler-side steel structure (58) is provided a boiler jack (60) for moving a boiler module (56) up and down via a suspending rod (52). Above the boiler jack is provided a device (68) for automatically attaching/detaching a rod. The device (68) is movable horizontally. The rod attaching/detaching device (68) grips a rod (52S) at the end of the suspending rod pushed up by the boiler jack, rotates it to remove, and transfer it to a rod conveyor device (70). Upon receiving the rod from the rod attaching/detaching device, the rod conveyor device conveys it ro a rod container (54) provided on a working floor (42).

Abstract: A spoke inserting apparatus for inserting spokes into a hub of a wheel of a bicycle. The operation for adjusting a position, a direction and the like of driving apparatuses, photo-sensors and spoke entanglement preventive apparatuses constituting the spoke inserting apparatus is facilitated.

Abstract: A rivet tool has a rivet pin which can be moved in a bore of a stamp die. The tool consists of a hydraulic cylinder having two pistons in which the first piston carries the rivet pin and the second piston carries the stamp die. The chamber between the pistons is connected with a variable volume pressure chamber. The cylinder chamber, which is facing the first piston, is connected with a pressure cylinder. After a rivet has been conveyed to beneath the rivet pin, a pressure cylinder is activated and a throttle interconnected between the chamber between the pistons and the pressure chamber. The stamping process is carried out hereby and the first piston is then pressed in direction of the second piston, whereby the first piston then lies on top of the second piston to effect the stamping process.

Abstract: The maintenance of nozzles is carried out efficiently and smoothly by automatically identifying a defective nozzle, hence contributing to the increase of productivity.

Abstract: A first method of manufacturing a printed circuit board includes steps of (a) preparing a board which has a chip mounting area and circuit patterns on an upper surface and metal pads to be electrically connected to the circuit patterns on a lower surface, (b) attaching a metal plate to the lower surface of the board, (c) forming metal patterns on the metal pads by etching the metal plate, and (d) forming metal bumps by plating the metal patterns.

Abstract: The present invention relates to multi-layer ceramic packaging of hybrid micro-electronic devices, including those for implantable medical devices. The invention permits size reduction and design simplification in such packaging by eliminating the need for electrolytic or electroless plating, and by eliminating or substantially eliminating the shrinkage variation typically associated with surface metallization techniques.

Abstract: A high-voltage variable resistor includes a structure which makes it possible to achieve stable and reliable contact conduction between a connection terminal 7 and a terminal electrode 2a. The connection terminal 7 comprises a spring portion 7b. At the end of the spring terminal 7b there is provided a flat contact section 7d which is wider than the other portions thereof. A plurality of protrusions 7e, 7f are formed on this contact section 7d. The outer edge portion of a lead line connecting section 7a of the connection terminal 7, which is accommodated in and fixed to a connection terminal accommodating section 6, is held in a terminal holding groove 6a of the connection terminal holding section 6, and the protrusions 7e, 7f are held in contact with the terminal electrode 2a of an insulating substrate 2 and pressed against the insulating substrate 2.

Abstract: A contact assembly (90) includes separate conductive members (42,54) with insulative material (90) molded about body sections (50,64) to define an integral unit for handling during connector assembly. The method includes stamping the conductive members (656,658,660,662) from a common blank (680) to have beams (610,612,614,616) associated in pairs to define sockets (606,608), second contact sections (648,650,652,654) at other ends, and body sections (656,658,660,662) joining the respective beams and second contact sections (648,650,652,654). Final separation of the conductive members may occur after molding of the insulative material (670), prior to which the conductive members may be retained on carrier strip facilitating the stamping, plating and molding processes.

Abstract: A method for manufacturing a cylinder for a two-stroke internal combustion engine provided with a pair of hollow scavenging passages, which comprises the steps of casting a raw cylinder body provided with the hollow scavenging passages and forming scavenging ports and/or air-fuel mixture inlet ports communicating respectively with said scavenging passages in the raw cylinder body by means of non-contact machining method.

Abstract: An apparatus and method for automatically assembling a plurality of identical first articles onto a second article. The second article is supported by a platform which is movable about three linear axes and three rotational axes by a six-axis positioning device. The first articles are held in a fixed position and the second article is positioned so as to insert the first articles into the second article as required. In the preferred embodiment, a torque converter turbine drum is supported by the platform to engage turbine blades which are supported in fixed position with respect thereto. The turbine drum is rotated with respect to the blades so as to permit the insertion of the blades into the drum by rotation and positioning of the drum in six axes.

Abstract: The process of the present invention for producing an ink-jet recording head is simple and does not require an additional solid layer on a first solid layer.

Abstract: A method for seriatim feeding and aligning of a plurality of fluid seals spaced apart on a carrier member to a fixed location in a punch mechanism. After each fluid seal is aligned at the fixed location, the carrier member is gripped on opposing sides of the aligned fluid seal by a pair of clamps and, in one embodiment, the clamps lowered with the gripped portion of the carrier member therebetween. A set of parallel needles mounted in a plate located directly beneath the gripped portion of the carrier member penetrate the lowered portion of the carrier member and lift the fluid seal from the carrier member. The removed fluid seal is held atop the needle points for ease of access by a robotic installation mechanism which will pickup and place the fluid seal onto a device, such as an ink jet cartridge.

Abstract: An aroma therapy delivery system is disclosed which incorporates a shaving unit as the delivery vehicle and a water soluble chemical encapsulator as the scent delivery package. The shaving assembly unit may be of a disposable cartridge type adapted for coupling to and uncoupling from a razor handle or may be integral with a handle so that the complete razor is discarded as a unit when the blade or blades become dulled. In either example, the top side of the handle of the shaving unit provides a surface for the affixing of a timed water soluble encapsulated material which comprises varying quantities of scent emitting substances. As the shaving assembly unit is immersed in water during the act of shaving, the particular aroma is released and delivered for the user's olfactory enjoyment.

Abstract: A device for progressively breaking the woody shell on fruits of the drupe type includes a double handle, of which a first handle is static and second handle is dynamic. The first handle includes a spoon-shaped seat to hold the fruit whose shell is to be broken and the seat has a longitudinal opening along its center. The second handle is connected to the first handle by a pivot and a movable breaking blade is also connected by the pivot to the two handles. The movable breaking blade is provided with a ratchet in the form of a wheel with teeth around its periphery. The ratchet progressively moves the blade so as to surpass the spoon-shaped seat through the longitudinal opening. The blade moves in response to the dynamic handle acting on a first pawl that engages with the teeth of the wheel.

Abstract: An illuminating knife device with two outer housings joined together to form an opening and a lighting hole at one end to construct a knife kit. A control mechanism associated with a blade is positioned inside the knife kit and is selectively movable to extend the blade out of the outer housings or to retract the blade back into the interior of the outer housing via the opening. A lighting device is installed in the other outer housings next to the opening for the blade, that can emit light to a desired range.

Abstract: A hole-forming device includes a pointed shaft which is raisable to a position facing a bottom of a can. The shaft is slidably supported on a support plate, with its lower end projecting downward below the support plate. With the hole-forming device mounted on the bottom of the can, and the bottom of the hole-forming device on a surface, such as a floor, a downward force on the can urges the pointed end of the shaft into the bottom of the can to safely puncture the can.

Abstract: The multiple line drawing aid is a generally U-shaped device or channel which has holes in one side member and a tension friction plate attached to the holding member opposite. The tension friction plate has slots on the edge which are located to correspond to the holes in the aperture member. A drawing instrument such as a dry erase marker is then inserted in each hole and pushed into the structure formed by the friction plate and face plate to retain the marker. The holes and slots then serve to hold the inserted markers when the users moves them across a drawing surface to draw parallel lines.

Abstract: An apparatus for aiming a device such as a gun or a camera at a target without holding the device near the user's face. The apparatus has two sections: a viewer and an irradiator. The irradiator is rigidly attached to the device to be aimed, and projects towards the viewer an indication of the direction in which the device is aimed. The viewer includes an eyeport, through which the user observes the target, and a mechanism for projecting on the eyeport an indication of the deviation from the target of the aim of the device to be aimed. Preferably, the irradiator includes two light sources collinear with the aiming axis of the device to be aimed, and the viewer mechanism is based on planar optics.

Abstract: The essence of the proposed method resides in that assumed as the datum point of measurement of the well azimuth is an azimuthally stabilized housing of a down-the-hole inclinometer and the magnitude of the azimuth is determined by measuring the angle of rotation of the housing of the down-the-hole instrument (1) round its longitudinal axis, which rotation occurs in response to an azimuthal deviation of the longitudinal axis of a well (5). According to a first embodiment of the proposed device, it comprises a plurality of spring-loaded arcuate elements (3) secured on an external surface (2) of the housing of the down-the-hole instrument (1) so as to form at least three rows, each row consisting of at least three elements (3), each of the latter establishing, together with an internal surface (4) of the well (5), a contact spot (6) whose portion having a greater size (h) is arranged lengthwise the longitudinal axis of the well (5).

Abstract: This invention relates to an extendable level which, by means of two slidable extension members on a central body, can more than double its collapsible length. The invention comprises a device which can lock the level in any length from fully collapsed to fully extended. An attachment is provided which can convert the invented level into a large carpenter's square. Further, the extension level, with a scale on its top edge, can measure inside lengths between opposing wall surfaces.

Abstract: A coordinate measuring equipment has at least one part that is movably guided on a guideway for measuring a workpiece and a drive for moving the part along the guideway. The drive for moving the part is connected to the guideway by means of a frictional connection.

Abstract: An apparatus for measuring sidewall thickness of a container includes a support coupled to a first motor for holding the container in stationary position while rotating the container about its axis. A gauge mechanism engages opposed interior and exterior points on the sidewall of the container, and provides an electrical signal as a function of sidewall thickness between such points. A second motor is coupled to the gauge mechanism for moving the gauge mechanism in the direction of the container axis. A controller is coupled to the first and second motors, and is responsive to the electrical signal from the gauge mechanism for obtaining and storing a three-dimensional data map of sidewall thickness at increments of motion of both the first and second motors. Thus, there is provided thickness data related to angular orientation and axial position, which can then be analyzed to identify specific problems associated with container manufacture.

Abstract: A self-adhesive polymer anchor for clasping a scoring device such as a pencil lead or scratcher to the housing of a conventional tape measure. The marker is secured in the anchor in a concave recess and oriented such that the marking device is in precise alignment with the tape at a given distance from the point the tape extends from the housing.

Abstract: The invention is directed to an impeller (1) for a hair dryer or a hair dryer accessory device, which includes an impeller blade (6) by means of which the impeller (1) is adapted to be set in rotation about an axis (3) by a current of air (8). The impeller blade (6) possesses variable aerodynamic properties, particularly an effective surface impinged by the current of air (8) which is variable in response to the rotational frequency of the impeller blade (6). In particular the free end (7) of the impeller blade (6) is of an elastic configuration, causing it to be bent more or less severely under the action of the centrifugal force. This variation in the effective surface of the impeller blade (6) enables the rotational frequency of the impeller (1) to be maintained at an approximately constant value.

Abstract: An apparatus and method for quickly drying solutions in one or more arrays of vessels includes a manifold that receives gas and a base plate that receives the one or more arrays of vessels. The manifold includes one or more hollow tubes that direct the gas into the vessels, where the gas evaporates the solutions. A variety of types of hollow tubes are disclosed. In an exemplary embodiment, the gas is filtered, pressurized and/or heated. In an exemplary embodiment, the solutions are heated. The base plate is hingeably coupled to the manifold so that the base plate has an open position and a closed position. The open position permits users to place and remove the vessels that contain solutions to be dried. In the closed position, the base plate and the manifold are in sealing engagement with one another, wherein the one or more of the hollow tubes extend into the vessels.

Abstract: An article for cooling an imaging material which has been heated to a first temperature by a thermal processor. The article includes a first cooling section on which the imaging material rides after the imaging material exits the thermal processor. The first cooling section is at a lower temperature than the first temperature. The first cooling section has a curved shape such that the imaging material is curved when riding on and being cooled by the first cooling section.