Abstract: A glazed roof comprises glazing bars supporting glazing panels secured to a supporting structure by means of screws through fixing blocks mounted at the glazing bar ends, the fixing blocks having provision for receiving and directing the fixing screws.

Abstract: A prefabricated modular wall element (20) comprises a precast reinforced concrete wall panel (21) having a front face (24). A plurality of spaced-apart individual slabs (33) of stone or brick are partially embedded in the front face (24) of the panel (21) during casting of the panel (21) and project outwardly of the front face (24) with channels being formed between the slabs (33). The slabs are arranged on the front face (24) such that the front face (24) simulates a wall constructed of stone. A pair of spaced-apart support legs (38) are provided at a bottom (27) of the wall panel (21) for keying into a concrete foundation (42) to support the wall element (1) in an upright position.

Abstract: A corner assembly for concrete form panels has a pair of rigid members. Each member has a bend therein to form a selected dihedral angle. The members are spaced apart by a selected distance and a removable bridge is disposed between the pair of rigid members. At least one concrete panel form is juxtapositioned to and connected to each of the rigid members. One of the rigid members is disposed exteriorly of the at least one concrete panel form. Concrete is disposed interiorly of the at least one concrete panel form. The corner assembly is adjustable to provide support for the corner of the construction.

Abstract: Disclosed is a system for interconnecting two or more buildings,objects or areas by way of a series of nonpermanent structures. The nonpermanent structures preferably take the form of covered walkway units. By utilizing the system of the present invention, buildings, such as school classrooms, can be joined by covered pathways to thereby provide shelter for people traveling between buildings. The walkway units of the present invention are both portable and modular. These features allow the units to be easily transported and interconnected to form pathways of varying lengths and directions.

Abstract: A floor frame structural support assembly having a plurality of substantially parallel, longitudinal support members or beams, each of the support members having an inside-directed and an outside-directed wall surface, the inside-directed wall surfaces of the support members being substantially parallel. Disposed between the support members and affixed to the inside-directed surface thereof so as to prevent the inside surfaces from moving from their substantially parallel relationship during handling, transportation, and deployment, is a plurality of substantially rigid, bend-resistive, compression-resistive cross members. Affixed to the outside surfaces of the respective longitudinal support members so as to be substantially collinear with the axis of a respective cross member is a plurality of outriggers. The floor frame structural support assembly may include additional structure such as floor joists, marriage wall beams, exterior wall beams and wall portions which are affixed thereto.

Abstract: A metal slatted grid comprises independent and identical elongate rectangular slats out of each of which is cut a series of tongues that are bent on the same side as one face of the slat. The free ends of the tongues are conformed so that they can be fixed to an adjacent slat. The tongues terminate in lugs for fixing them permanently into corresponding holes in an adjacent slat.

Abstract: A bumper and supporting frame assembly for protecting a column or a corner, or any object which may come in contact with the column or corner. The invention includes tires having hubs or wheels rotatably mounted on a sleeve, i.e. a hollow tube. A pair of frames for mounting around a column, one above the tires and the other below the tires, support the tires in their position as bumpers to protect the column. The frames have tubular protrusions, e.g. pipes, extending towards one another and telescopically engaged. The sleeve is rotatably mounted on the pipes. Energy from an object which strikes the column is dissipated by this rotation of the sleeve relative to the pipes, as well as the rotation of the tires relative to the sleeve. Each frame includes two portions, which are removably attached to one another, allowing for the easy adjustment of the frames along a column. The adjustment of both frames allows for the height of the bumper to be varied on the column.

Abstract: A modular wall panel and mounting members for attaching a panel covering thereto. The modular wall panel has one or more flanges that connect to a frame support. A panel covering is tensioned across a face of the frame support and is connected to the flanges by the mounting members.

Abstract: The present invention relates to a process and device for the cyclic positioning of images over package troughs, said images being printed on a covering film.

Abstract: A packing machine wherein a conveying head feeds a product to a wrapping head in which a respective sheet of wrapping material is folded into a U about the product so as to have a pair of wings facing each other and projecting transversely from the product; and a movable folding device carried by the conveying head folds a first wing of the pair of wings through 90° onto the product once the product is supplied to the wrapping head.

Abstract: An improved method and apparatus are provided for forming and individually wrapping round bales of high moisture forage within a bale forming chamber of a round baler. The bales are wrapped to cover their side surfaces and an outer peripheral portion of the ends of the bale with plastic, leaving an unwrapped central portion of the bale ends. The individually wrapped bales are placed adjacent each other end-to-end, such that the wrapped end surfaces of the individually wrapped bales are adjacent each other. By slamming the wrapped bales together end-to-end, the O-ring of plastic on each end of the bales will cooperate to form an air tight seal with an adjacent bale. In one embodiment, a baler is provided with a mechanism for altering the profile of the ends of the bale as it is being formed within the baler. The purpose of the altered profile is to let a wrapping material be brought down over the ends of the bale while the bale is rotating within the baler.

Abstract: A packaging machine comprises a filling device 13 for filling a tube T of packaging material having an open upper end and a closed lower end with contents in a predetermined amount at a time, and a device 14 for forming containers C by sealing and cutting the filled tube T transversely thereof into a length corresponding to one container at a time. The amount of contents to be filled into the container and the capacity of the container are so determined that the capacity is greater than the amount of contents to be filled.

Abstract: One aspect of the present invention is directed to an improved operator control system for a walk-behind, mid-size mower having a prime mover and two or more ground-engaging traction wheels. The control system includes a handle having a hand grip and an upper control lever wherein the latter permits engagement of one or both traction wheels for forward or reverse motion and turning. The system further includes a lower lever easily accessible by one or both hands from the hand grip. The lower lever is coupled to the upper control lever such that squeezing the lower lever towards the hand grip also engages both traction wheels. In addition, when the lower lever is squeezed toward the hand grip, it is then substantially adjacent thereto. This permits the operator to provide better lifting assistance to the mower during curb traversal while maintaining engagement of the drive wheels.

Abstract: In a tree shaking apparatus a pad positionable between the trunk of a tree to be shaken, and the apparatus itself, includes a pair of end sections. Each end section defines a bore extending therethrough for receiving a post extending from the apparatus, thereby mounting the pad on the apparatus. A resilient polymeric web extends between the end sections and defines a first surface for engaging the trunk of a tree to be shaken.

Abstract: A rake for attachment to a horizontally elongated blade on a tractor. After attachment the rake can be can be lifted, lowered, and pressed down into the soil or gravel etc. being raked with hydraulic power. The rake comprises comprises: a horizontally elongate member adapted to be carried adjacent, parallel to, and beneath the bottom portion of the blade; arms affixed along the elongate member for releasably attaching the member beneath the bottom portion of the blade; and, teeth spaced along and extending downwardly beneath the elongate member. In a preferred embodiment of this invention the elongated member comprises a channel, the blade attachment means comprises arms which extend from opposite side portions of the channel and surround the blade, and the teeth comprise hardened replaceable bolts.

Abstract: The invention provides spinning rings for textile spinning processes having an improved bearing surface formed of a coating of amorphous chromium that is typically applied by an electrodeposition process. The amorphous chromium coated spinning rings of the present invention impart a durable spinning ring that can be used in fine yarn, high speed spinning operations without the need to provide for a conventional break-in period.

Abstract: In a combined cycle system having a multi-pressure heat recovery steam generator, a gas turbine and steam turbine, steam for cooling gas turbine components is supplied from the intermediate pressure section of the heat recovery steam generator supplemented by a portion of the steam exhausting from the HP section of the steam turbine, steam from the gas turbine cooling cycle and the exhaust from the HP section of the steam turbine are combined for flow through a reheat section of the HRSG. The reheated steam is supplied to the IP section inlet of the steam turbine. Thus, where gas turbine cooling steam temperature is lower than optimum, a net improvement in performance is achieved by flowing the cooling steam exhausting from the gas turbine and the exhaust steam from the high pressure section of the steam turbine in series through the reheater of the HRSG for applying steam at optimum temperature to the IP section of the steam turbine.

Abstract: The present invention relates to a process for lubricating an aircraft engine, and preferably a turboreactor engine, comprising at least one shaft (2), in which the pressurization of oil taken from a reservoir (3), the distribution of the oil via a downstream circuit (5) to elements (6) of said engine, and the return of the oil via an upstream circuit (7) to the reservoir (3) are ensured by means of a pump (1, 15, 17), the rotational speed of said pump (1, 15, 17) being variable and adjustable, characterized in that this rotational speed of said pump (1, 15, 17) is preferably regulated by a predetermined law in order to adapt to the actual lubrication needs of said engine.

Abstract: A gas turbo-machine and method of designing and constructing such machine includes preselecting specific operating conditions for the gas turbo-machine, and constructing a master stage as a model to have a given design and geometric shape which results in substantially the optimum efficiency during operation of the master stage at the preselected operating conditions.

Abstract: A land based gas turbine plant includes a turbine compressor, a turbine section, and a combustor between the compressor and the turbine section. A heat recovery boiler incorporating at least one heat exchange section is arranged to receive exhaust gas from the turbine section, the heat recovery boiler receiving water passed in heat exchange relationship with the exhaust gas to produce steam. An external compressor supplies augmenting combustion air that is mixed with the steam produced in the heat recovery boiler to produce a mixture of steam and air that is injected into the combustor.

Abstract: In a method of operating a gas turbine, in which a gaseous fuel is burned in a combustion chamber and the hot combustion gases which are produced in the process are directed through the gas turbine, and in which method the gaseous fuel is fed to the combustion chamber via a plurality of controllable burners, working in parallel and arranged on one or more concentric, essentially circular rings, and is sprayed into the combustion chamber via fuel holes, high safety and availability within various operating ranges is achieved in a simple manner owing to the fact that the burners are divided into at least two groups (40-42) of burners, these groups in each case comprise the burners of one of the rings, and these groups are individually activated as a function of the operating state of the gas turbine.

Abstract: Provided is a device for supplying seal air to the bearings of a gas turbine engine which allows the seal pressure to be kept even between the front and rear gear boxes without complicating the passages for supplying the seal air to the bearing boxes. Sealing air drawn from a part of high pressure compressor is conducted through passages defined between the inner periphery of the rotors of the high pressure compressor and a high pressure turbine and the outer periphery of the outer shaft, and is distributed to the front and rear bearing boxes. By appropriately providing narrowed parts in these passages, seal air is evenly distributed between the front and rear bearing boxes. Thus, even in case of a failure of one of the oil seals, any concentrated leakage of the lubricating oil can be avoided.

Abstract: A combined cycle power plant including a gas turbine plant, a heat recovery steam generator, and a steam turbine plant. The heat recovery steam generator includes a main stream side steam piping, a bypass side steam piping, a steam branching to branch a steam flowing from a former stage in the heat recovery steam generator into two steams, one as a main stream side steam and another as a de-superheating steam, and a steam merging portion to merge the main stream side steam superheated by the high pressure superheater and the de-superheating steam passed through the bypass side steam piping. The heat recovery steam generator is provided with a blocking prevention function to prevent blocking of the main stream side steam piping and the bypass side steam piping and a thermal stress generation protection function.

Abstract: The present invention is a method of solidifying sulfur component being the cause of “SOx poisoning” by use of a sulfur solidifier. The solidifier includes a metal element having a function of oxidizing the sulfur component and a basic metal element. And the solidifier solidifies sulfur component before exhaust gas flows into an NOx-occluding reduction-type exhaust purifying catalyst located on an exhaust path. Since the foregoing sulfur solidifier includes the above metal element and the basic metal element, it can effectively solidify the sulfur component which are the cause of the SOx poisoning, and ensure improvement in purification performance.

Abstract: An energy management system operable in three modes of operation to either drive or retard the drive shaft (110) of a vehicle, or in a neutral mode, to have no driving or retarding influence on the drive shaft. The system includes energy accumulating means (100, 101) which is operable to store and release energy through receipt and release of fluid, pumping means (104) in fluid communication with the energy communication means (100, 101), a reservoir (107) of fluid in communication with the pumping means (104), and coupling means for coupling the pumping means (110) to the drive shaft (110). Whereby in the retarding mode of the system, the drive shaft (110) drives the pumping means (104) to pump fluid to the energy accumulating means (100, 101), and whereby in the driving mode of the system, the energy accumulating means (100, 101) releases fluid to drive the pumping means (104) which drives the drive shaft (110).

Abstract: A transmission mounted in a housing and including a hydrostatic pump and motor mounted on a center section, having a motor shaft engaged to and driven by the hydraulic motor. An axle may also be mounted in the housing. The center section is secured to the housing using a plurality of bolts or other fasteners having a longitudinal axis parallel to the motor shaft and for the axle.

Abstract: The present invention includes a method and apparatus for controlling the exhaust temperature of an engine is disclosed. The method includes the steps of sensing the exhaust temperature of the engine, determining a desired air pressure in response to the exhaust temperature, and controlling the air flow into the engine in response to the desired air pressure. The apparatus includes an air temperature sensor for sensing an actual exhaust temperature within the exhaust manifold and responsively generating an exhaust temperature signal. The apparatus also includes a controlling means for receiving the exhaust temperature signal and comparing the exhaust temperature signal to a desired exhaust port temperature, determining a desired air pressure in response to said comparison.

Abstract: Disclosed is a refrigerator for kimchi, including a main body having at least one cooling chamber, an evaporator for cooling the cooling chamber, a compressor for supplying a refrigerant to the evaporator, a refrigerant tube for supplying the refrigerant from the compressor to the evaporator, and a valve installed in the refrigerant tube for controlling the supply of the refrigerant. The kimchi refrigerator further comprises a temperature sensor for detecting the temperature of the cooling chamber; a heater installed in the main body, heating and defrosting the evaporator; and a controller for controlling the heater to perform the defrosting operation when the temperature of the cooling chamber detected by the temperature sensor is not more than a predetermined temperature. With this configuration, a layer of frost frozen in the evaporators can be removed effectively, to thereby further enhance a cooling efficiency and save a consumed power.

Abstract: An improved method of operation for a vehicle air conditioning system controls an inlet air blower motor and an air inlet mixing device to reduce compressor and blower motor power consumption and achieve performance improvements associated with cabin air recirculation while maintaining a predefined level of outside air flow and a predetermined humidity level in the inlet air mixture of the system. The overall air flow is determined by the speed of the blower motor and the speed of the vehicle, and the speed of the blower motor and the position of the inlet air mixing device are adjusted as a function of both the vehicle speed and the selected blower motor speed so that the predefined level of outside air flow is preserved regardless of the vehicle speed and the selected blower motor speed.

Abstract: When an after-evaporation temperature TE remains below the wet-bulb temperature Twet, the compressor 231 is intermittently operated for a predetermined time after the elapse of a first time To from compressor 231 stopping. On the other hand, when the after-evaporation temperature TE is higher than the wet-bulb temperature Twet, the intermittent operation mode stops. This reduces dispersion of offensive smells from the evaporator.

Abstract: A preferred embodiment of the reach-in cooler incorporates a roof structure which includes a ceiling and a roof that are spaced from each other to form an air distribution plenum. The air distribution plenum includes an air return inlet and an air distribution outlet, and communicates with air return passage via the air return inlet. Preferably, the air return passage is formed between the back of the cooler and a partition. The refrigerated space of the cooler is disposed below the roof structure and communicates with the air return passage. Additionally, a refrigeration unit, which includes a refrigeration coil and a fan, communicates with the air return passage so that the fan moves air from the refrigerated space, through said air return passage, through the air return inlet and into the air distribution plenum. The air then is directed through the refrigeration coils for delivery through the air distribution outlet and into the refrigerated space for cooling the refrigerated space.

Abstract: The invention disclosed and claimed in this patent is an improved refrigerated speed rail apparatus. The speed rail permits organized storage of beverage containers and provides easy and rapid access to those containers. The included refrigeration system chills beverages stored in the speed rail apparatus thereby enhancing the flavor of those beverages.

Abstract: The present invention includes a method and apparatus for making a hydrate slurry, which prepare an aqueous solution of a guest compound for forming a clathrate hydrate, cool the aqueous solution, and contact a nuclear particles; furthermore, a thermal storage method, a thermal storage apparatus, and a thermal storage medium by using an aqueous solution of clathrate hydrate, whose concentration is a congruent melting point or lower; furthermore, an refrigerating apparatus and an air conditioner for using the thermal storage method, the thermal storage apparatus and the thermal storage medium.

Abstract: When the start button is pushed after the door of the supply chamber is closed, carbon dioxide gas is ejected from the nozzle placed at the upper part of the horn. The carbon dioxide gas is converted to powdered dry ice by adiabatic expansion in the horn, and the dry ice falls on fresh food or other items to be cooled in a box or plastic bag placed under the horn. In order to obtain a desired amount of dry ice constantly, the ambient temperature, the pressure of the carbon dioxide gas, the interval time since the last ejection are counted in determining the carbon dioxide ejecting time length.

Abstract: A vibrating, body-piercing jewelry item having a vibrating motor unit, a housing for the vibrating motor unit, a post, a keeper, retainer or clamping device for holding the item on a wearer's body, a power source for operating the vibrating motor unit, and an actuator for the vibrating motor unit. The vibrating, body-piercing jewelry may be worn on a part of the body that is either unpierced or pierced.

Abstract: Deuterium oxide, D2O, also called heavy water, is used for the hydrolysis of silanes and metal compounds. The D2O-hydrolyzed silanes polycondense much easier than H2O-hydrolyzed silanes, resulting in a fast Si—O—Si network build up. The most important feature of using D2O is that the final materials are 100% free of O—H and the residual O—D bond does not have an absorption peak in the wavelength range of 1.0 to 1.8 &mgr;m, which is crucial in reducing optical loss at the wavelengths of 1.3 and especially 1.55 &mgr;m. O—H free sol-gel materials with low optical loss have been developed based on this process. D2O may be applied in all kinds of hydrolysis-processes, such as the sol-gel process of silanes and metal compounds, the synthesis of polysiloxane, and may be extended to other silica and metal-oxides deposition processes for example, flame hydrolysis deposition (FHD) whenever water is used or O—H bond involved.

Abstract: In a method of manufacturing a porous glass preform for an optical fiber which preform is formed as a deposit of fine glass particles by using a burner, a method to prevent the contamination of any glass particles having failed to be properly deposited so that the generation of voids may be minimized in a transparent glass preform which is produced by heating the porous glass preform. An inert gas is caused to flow through the burner at a rate of at least 25 m/s before fine glass particles are formed by the hydrolysis and/or oxidation of a glass material in a flame produced by the burner supplied with a mixture of a gas of the glass material and a gas for combustion and are deposited on a rotating starting member. It is desirable to elevate the pressure of the inert gas above the atmospheric pressure by a device connected to the burner by a pipeline, and cause it to flow rapidly through the burner.

Abstract: The method consists of increasing the flowrate of argon injected into the bottom of a fiber-drawing furnace when a weld between two sections of a preform is being drawn during the operation of drawing a fiber from a preform. This prevents the weld causing an excessive increase in the diameter of the resulting fiber and/or an excessive variation in the drawing speed.

Abstract: A method for connecting two glass fibers, which comprises abutting the end surfaces to be connected of the two glass fibers so that their axes are in a line, and raising the temperature at the abutted end surfaces so that the end surfaces are fusion-spliced to connect the two glass fibers, wherein one of the two glass fibers is a high-melting glass fiber having a higher glass transition point and the other is a low-melting glass fiber having a lower glass transition point, and the heating is carried out in such a manner that the temperature is highest at a portion on the high-melting glass fiber distant by at least 1 &mgr;m from the end surface to raise the temperature at the end surfaces.

Abstract: A process of poling a silica material such as an optical fiber whereby electro-optic non-linearities are induced so that the material can function as a phase modulator and switch in optical communications applications. The poling is effected at an elevated temperature on the order of 450° C. or higher, using an electric field on the order of 800 V/&mgr;m or higher for a period of time in the range of one minute to several tens of minutes.

Abstract: This invention relates a control for an automatic washer incorporating a spray pretreatment or stain care cycle. In order to manage the occurrence of the condition of suds lock, the state of the washing machine related to the suds lock condition during spray pretreatment is determined by one or more of a number of methods. With this information concerning the state of the spray pretreatment process, the occurrence of suds lock can be ascertained and the cycle can be controlled accordingly to minimize negative effects resulting from a prolonged suds lock condition. Additionally, with certain information related to the occurrence of suds lock, steps can be taken during the spray pretreatment portion of the cycle to avoid the condition of suds lock altogether. Using the same primary process for measuring suds lock, load size can also be ascertained. Information about load size can be used to control the wash cycle.

Abstract: A locking device for a door (1), window, or the like, with a main lock casing (2), at least one additional lock casing (3) and at least one pushrod (11) connecting the additional lock casing (3) with the main lock casing (2), wherein the additional lock casing (3) has a retractable latch bolt (10), which can be freely pushed out of the latch position into the additional lock casing (3), which can be pushed into its locking position by means of a spring (28) and/or a gear, and wherein the latch bolt (10) on its side located opposite a leading incline (22) and in the area of the latch end (34) has a protrusion (43), on which a latch restoring lever (40) acts, and the latch restoring lever (40) has a first catch (46), by means of which a pushrod (11) is taken along in the one direction,

Abstract: A removable thumbturn core assembly which replaces a key core assembly after removing a key cylinder with a control key. The control key feature is preserved for removing the key cylinder.

Abstract: The invention relates to a locking device having a barrel housing (2) which consists of a lower part (3) and a metallic upper part (4) and which surrounds a cylinder housing (5) which consists of metal and in which there is rotatably mounted a cylinder core (6) which can be locked to the cylinder housing (5) via tumblers (7).

Abstract: A crimping including a stand at which a motor and a transmission are arranged. Moreover, first guides, at which a crimping bar is guided, are arranged at the stand. A shaft driven by the transmission has an eccentric pin at one end, and a resolver for detection of rotational angle is coupled to the other end. The crimping bar includes of a slide member guided in the first guides and of a tool holder with a retaining fork. The slide member stands in loose connection with the eccentric pin, wherein the rotational movement of the eccentric pin is converted into a linear movement of the slide member. The tool holder actuates a tool, which together with an anvil produces the crimp connection. An operator terminal is provided as an interface between the operator and the crimping press. The operator terminal includes a rotary knob and a keypad for input of operating data and commands into a control. A display is provided for visualization of data.

Abstract: An abrasive water treatment method and apparatus includes supporting a metal workpiece on a workpiece support and arranging a nozzle above a target surface of the workpiece so that the nozzle is pointed towards the target surface of the workpiece. A pressurized fluid having entrained abrasive particles is then generated and discharged through the nozzle and toward the target surface of the workpiece. The nozzle is located a texturing standoff distance from the target surface such that the periphery of the pressurized fluid stream discharged from the nozzle expands after being discharged from the nozzle and prior to impinging upon the target surface of the workpiece. As a result, a textured surface is created on the workpiece.

Abstract: A method of sealing the orifice of a metal tube by: rotating the metal tube to be sealed and using a heat source to soften the orifice of the metal tube to be sealed, and then using a mold to mold the softened material of the metal tube, enabling an end wall, which can have any of a variety of shapes, to be formed integral with the metal tube to seal the orifice.

Abstract: An apparatus and method for creating a flange around a preformed opening in a wall of a tubular member. The apparatus includes an elongated guidance housing adapted to fit within the tubular member. An elongated presser having at least one pressing surface is slidably received within the guidance housing. A punch member is located adjacent the pressing surface within the guidance housing. The punch member is sized to fit at least partially through a side opening in the guidance housing and at least partially through the preformed opening. When the presser is advanced relative to the guidance housing, the pressing surface to urges the punch-through the side opening and through the preformed opening. The movement of the punch thereby forms an outwardly upstanding annular flange extending around the preformed opening in the tubular member.

Abstract: The cutting edge of a die and the cutting edge of a punch are spaced more widely from each other in a range of an element which includes a neck and undercuts than in the other range of the element. The element is blanked out of a metal sheet by the die and the punch. Edges of the neck and the undercuts are formed of a sheared surface in a transverse direction and a ruptured surface contiguous to the sheared surface. A burr is formed next to the ruptured surface in a position out of contact with endless rings.

Abstract: The device consists of a rigid pendulum (1) pivoted at its upper end (2) and upon which a ball (5) is retained at its lower end in a holder (6), so that the center of the ball lies on or close to the longitudinal axis of the pendulum. The holder itself is attached to a shoe (3) which pivots about a point (4) on a projection offset from the bottom end of the pendulum, such that the shoe moves in an arc which lies in a vertical plane perpendicular to the vertical plane in which the pendulum swings. Movement of the shoe about this pivot allows the ball holder (6) and thus the ball (5) to move in an approximately radial direction with respect to the pendulum pivot (that is, along the axis of the pendulum when the ball center is on that axis) and the degree of movement of the shoe about its pivot is limited by stops (7a, 7b) provided on the pendulum. The complete pendulum device is supported in a tripod framework or alternative rigid support.