Abstract: An exhalation valve assembly that controls the pressure of exhaled gas in a ventilation system is described. The exhalation valve assembly includes an actuator module that may be fixed to the ventilation system and a valve module, removable for cleaning or disposal, through which the exhaled gas flows and that controls the pressure and release of the exhaled gas to the environment. Other components may also be incorporated into the assembly including a filter module, a flow meter and a condensate trap.

Abstract: An exhalation valve assembly that controls the pressure of exhaled gas in a ventilation system is described. The exhalation valve assembly includes an actuator module that may be fixed to the ventilation system and a valve module, removable for cleaning or disposal, through which the exhaled gas flows and that controls the pressure and release of the exhaled gas to the environment. Other components may also be incorporated into the assembly including a filter module, a flow meter and a condensate trap.

Abstract: An exhalation valve assembly that controls the pressure of exhaled gas in a ventilation system is described. The exhalation valve assembly includes an actuator module that may be fixed to the ventilation system and a valve module, removable for cleaning or disposal, through which the exhaled gas flows and that controls the pressure and release of the exhaled gas to the environment. Other components may also be incorporated into the assembly including a filter module, a flow meter and a condensate trap.

Abstract: A respiratory mask, in particular a nasal mask, comprising a mask body (1) with an internal chamber (10), an expansion part (2) being arranged on the mask body (1) and projecting upwardly from said mask body (1), said expansion part (2) comprising a traversing orifice (3), a holding arm (4) pivotable around a first axis (AA) located on said mask body (1) or on said expansion part (2), a forehead support (9) fixed to said holding arm (4) and pivotable around an axis (BB) located on said holding arm (4), and an acting piece (5) mobile in said traversing orifice (3), wherein the acting piece (5) cooperates with the holding arm (4) for pivoting said holding arm (4) around the first axis (AA) when said acting piece (5) moves in the traversing orifice (3) of the expansion part (2). The mask of the present invention is useable for treating sleep disordered breathing (SDB) conditions, such as, for example, obstructive sleep apnea.

Abstract: A respiratory therapy facemask configured to be positioned against a patient's face and adjacent the patient's mouth, includes a face plate configured for attachment to the patient and defining an opening, the face plate including a laterally extending track defining a slot. A tube rest assembly is configured for being slidably engaged in the slot and for securely accommodating an endotracheal tube. The tube rest assembly is configured for directly engaging the track for lateral movement in the opening.

Abstract: Some embodiments include oral airway assemblies that can include a body having an opening extending from a first end of the body to a second end of the body with the body having upper and lower portions in one cross section. A flange can be included that extends from the first end of the body and outwardly from the opening. An upper member extending from the upper portion of the second end of the body and outwardly from the opening away from the lower portion can be provided. The assemblies can include a lower member slidably engaged with the body, with at least a portion of the lower member extending outwardly from the lower portion of the second end of the body and away from the upper portion when engaged with the body. In accordance with other embodiments a member can be provided to slidably engage with the body, and include a tab at one end, with the tab being pivotably coupled to the member.

Abstract: A patient interface device that includes a support member sized and configured to span at least a portion of a patient's face while remaining below the patient's eyes responsive to the patient interface device being donned by such a patient and a sealing assembly operatively coupled to the support member such that the support member is moveable relative to the support member. The support member defines a gas carrying conduit adapted to carry a flow of gas to the sealing assembly. The support member is a single-piece unitary member and includes a conduit coupling portion adapted to be coupled to a patient circuit.

Abstract: A compacted sexual-transmitted-disease controller brief which encases the lower abdomen, pelvic region (including genitalia and anus) and upper thigh regions of a user. The compacted controller brief is comprised of a waist enclosure, a pelvic enclosure, left and right upper thigh enclosures and a condom enclosure that are each compacted and a folding arrangement that compacts each of the compacted enclosures. The compacted brief is suitable for a user to slide onto the user's pelvis region and to unravel and unfurl so as to extend about the users waist region, upper thighs and erect penis.

Abstract: One embodiment comprises a limb support device that includes a vertical support, a base connected to a lower end of the vertical support and a head portion connected to an upper end of the vertical support. In this embodiment, the base includes a set of foldable legs that can be positioned upward, where each leg is substantially parallel to the vertical support, or downward, where each leg is substantially perpendicular to the vertical support so that the vertical support is held upright. The head portion has a generally concave saddle that can hold a limitation above the vertical support. The saddle can be pivoted so that it can be positioned at a variable angle with respect to the vertical support. The vertical support itself is adjustable in length.

Abstract: The present disclosure relates to a device for positioning and/or orienting, in the body of a patient, a surgical tool carried by a tool-holder, including a platform capable of being placed on the body of the patient, an orientable carrier, at least one part of which is rigidly connected to the tool-holder, means for guiding the orientable carrier rotationally relative to the platform in two directions of a plane parallel to the platform, at least 2 pneumatic actuators which engage with the orientable carrier such that a variation in pressure of at least one of the pneumatic actuators causes the orientable carrier to rotate in the first direction and/or the second direction, in which the pneumatic actuators are volumes that can deform in a predetermined direction as a function of the internal pressure.

Abstract: The invention relates to a disposable surgical cover having a fluid impermeable base cover material with a lower side facing the patient during use and an upper side, wherein the upper side comprises an absorbent layer, a first absorbent region, and at least one second absorbent region. For this purpose the second absorbent region is overlapped by a fluid absorbent and fluid permeable material section having outer edges and adjoining edge regions. The surgical cover as such extends in a longitudinal direction LR between an upper end and a lower end. The absorbent material section is undetachably fixed across the entire circumference on the upper side of the base cover material, and is substantially not connected to the base cover material outside of the edge regions such that a pocket is formed between the absorbent material section and the fluid impermeable base cover material.

Abstract: The present invention device provides a device designed to prevent ear pain or discomfort due to air pressure changes when flying, comprising a head unit resembling a set of lightweight headphones, featuring an adjustable bridge that allows the unit to be worn by adults and children alike. The unique aspects of this product are found in its dual ear cover housings. Each circular covering features a comfortable, padded exterior to fit over the ears; directly behind the padding is a small section of empty space. Extending inward, an area of padded foam provides a blocking agent for air as well as noise. Further helping to protect the ears from changes in air pressure, each side of the Original Ear Popper Stopper is lined with bubble wrap, offering even more insulation.

Abstract: A method of making palladium-containing nanoscale catalyst particles comprising subjecting a starting material to laser energy so as to form a vapor and condensing the vapor so as to form the catalyst particles. The catalyst comprises nanoscale particles of palladium and/or palladium oxide incorporated in and/or on nanoscale particles of a metal or metal oxide. The nanoscale catalyst, which can be incorporated in the tobacco cut filler, cigarette wrapper and/or cigarette filter of a cigarette, is useful for low-temperature and near-ambient temperature catalysis. The nanoscale catalyst can convert carbon monoxide and nitric oxide that are found in mainstream smoke to carbon dioxide and nitrogen, respectively. The nanoscale catalyst may also be incorporated into a hydrocarbon conversion reactor, into a vehicle exhaust emissions system, into a laser, into a fuel cell or used in an air filter or for emissions reduction in the cold starting of an automobile engine.

Abstract: An electrically heated smoking system for receiving an aerosol forming substrate includes a heater for heating the substrate to form the aerosol. The heater includes a heating element. The electrically heated smoking system and the heating element are arranged such that, when the aerosol forming substrate is received in the electrically heated smoking system, the heating element extends a distance only partially along the length of the aerosol forming-substrate, and the heating element is positioned towards the downstream end of the aerosol forming substrate.

Abstract: A hair building solid comprising a coating, wherein the coating facilitates the formation of a dipolar electrostatic charge on the surface of the coated solid.

Abstract: The present invention is related to an aqueous cleansing composition especially for keratin fibres such as human hair with excellent volume enhancing effect. First object of the present invention is a cleansing composition for hair comprising at least one surfactant selected from anionic, non-ionic and amphoteric ones and furthermore comprising at least one ethoxylated monoglyceride according to the general formula wherein R1 is a saturated or unsaturated and branched or straight alkyl chain with a chain length of 7 to 21 C atoms and x+y+z has a value of 3 to 200 and at least one (poly)propylene glycol according to the following formula wherein n has a value between 1 and 70.

Abstract: A cosmetics case includes a bottom case, a top case which covers the bottom case, a storing member which is positioned inside the bottom case to store a predetermined contents and includes a spring holder formed at a bottom side of the storing member for holding a spring and a rotation prevention protrusion formed at a side of the storing member, a separable case separably coupled to the bottom case and pressurizing the storing member, and a grinding member. The separable case includes a hollow, a fringe to be received at a top of the bottom case, and a coupling member extending downward from the hollow, and the grinding member is installed in the hollow of the separable case to grind the predetermined contents stored in the storing member through a rotary motion.

Abstract: A substrate support for a plasma processing chamber has an angled sidewall at an upper periphery thereof. The substrate is surrounded by an edge ring which underlies a substrate supported on an upper substrate support surface of the substrate support during plasma processing. The angled sidewall is the only surface of the substrate support exposed and subject to byproduct deposition during plasma processing. The angled sidewall enhances sputtering rate of the byproduct deposition during an in situ chamber clean process wherein a cleaning gas supplied to the chamber is energized into a plasma state for cleaning the byproduct deposition.

Abstract: A plasma processing apparatus includes a processing chamber, in which a wafer W is plasma-processed, and a CPU controlling an operation of each component. A processing gas is introduced into the processing chamber under a first condition defined by a flow rate and a molecular weight of the processing gas, specifically based on a magnitude of a product A1 (=Q1×m1) of the flow rate Q1 and the molecular weight m1 of the processing gas, and a surface of the wafer W is physically or chemically etched. And then, a pre-purge gas which may be identical to or different from the processing gas is introduced into the processing chamber through a shower head under a second condition derived from the first condition.

Abstract: An architecture is presented that provides a cleaning device for vehicles, windows, pets, etc. The cleaning device comprises a mitt to be worn by a user, and a swivel extension secured in the center of the mitt. The swivel extension connects to a coil hose, which will supply water to the mitt eliminating the need for a soap/wash bucket. Specifically, a threaded connector on an end of the coil hose allows the hose to be connected to a water supply, such as a garden hose or faucet. Furthermore, the mitt has an opening in the center, wherein soap can be inserted. Once soap is inserted into the center of the mitt, the opening can be secured with hook and loop fasteners, or any other suitable fasteners. The mitt also comprises an adjustable collar, allowing the mitt to be tightened and secured to a user's hand.

Abstract: A control method of a dishwasher is provided in which a filter is cleaned by controlling an operation of a washing pump. In this control method, washing fluid pumped by the washing pump back flows and is directed to the filter so as to remove foreign materials accumulated in the filter from the filter.

Abstract: A method for removing contaminants from hard surfaces such as metal or plastic resin material using a propane and carbon dioxide system. The propane and carbon dioxide system removes the contaminants by a varying percentage of propane to carbon dioxide to maximize the cleaning properties while creating a gas combination without a flammability range in air.

Abstract: A vehicle wash system having a wash bay including a plurality of pivotable robotic wash monitors disposed therein. The system includes measuring devices that calculate the distance between the robotic wash monitors and a vehicle in the wash bay. A master control unit is provided for programming the plurality of robotic wash monitors to clean the vehicle in accordance with an optimal set of cleaning instructions. The master control unit generates the optimal set of cleaning instructions based on three-dimensional (3D) data associated with the wash bay, 3D data associated with the vehicle, and the location of the vehicle.

Abstract: A method of rinsing cleaned dishware comprising the steps of: (a) cleaning dishware in an automatic dishwasher; and (b) during the rinse cycle of said automatic dishwasher, rinsing said dishware with a rinse aid composition comprising: at least one a graft polymer comprising an acrylic acid backbone and alkoxylated side chains, said polymer comprising a molecular weight of from about 2,000 to about 20,000, said graft polymer comprising from about 20 wt % to about 50 wt % of an alkylene oxide; an acid; a non-ionic surfactant; and optionally at least one component selected from the group consisting of dispersant polymer, perfume, hydrotrope, binder, carrier medium, antibacterial active, dye, zinc carbonate, zinc chloride, and mixtures thereof.

Abstract: A method for treating substrates with treating liquids, using a treating tank for storing the treating liquids, a holding mechanism for holding the substrates and placing the substrates in a treating position inside the treating tank, a first and a second treating liquid supply device, a temperature control device, and a control device. A first treating liquid is supplied into the treating tank, then a second treating liquid of lower surface tension and higher boiling point than the first treating liquid, is supplied into the treating tank, and placed in a temperature range above the boiling point of the first treating liquid and below the boiling point of the second treating liquid, and then controlling the second treating liquid supply device to replace the first treating liquid stored in the treating tank with the second treating liquid, and controlling the temperature control device to maintain the second treating liquid in the same said temperature range.

Abstract: Disclosed are a substrate processing apparatus, a substrate processing method and a storage medium, capable of removing contaminant materials from a substrate by using SPM liquid (sulfuric acid and hydrogen peroxide mixture) while preventing degradation of the function of the SPM liquid for removing the contaminant materials. The SPM liquid is filled in a processing bath and the substrate is immersed in the SPM liquid. A heating unit is provided in the circulation path to heat the SPM liquid. A hydrogen peroxide supply line supplements hydrogen peroxide to the SPM liquid in the circulation path. A control unit adjusts the temperature of the SPM liquid to the predetermined temperature in the range of 135° C. to 170° C. based on a temperature detection value and outputs a control signal to supplement the sulfuric acid to compensate for the SPM liquid as the SPM liquid is evaporated by heating.

Abstract: A descaling arrangement for a dishwasher and an associated apparatus are provided. The dishwasher has a tub portion adapted to receive dishware therein, and a fluid circulation system configured to circulate dishwashing fluid about the dishware within the tub portion. A descale system is in fluid communication with the fluid circulation system. The descale system is configured to selectively introduce a descaling substance into dishwashing fluid circulated within the fluid circulation system such that the descaling substance is distributed to at least one of the tub portion and the fluid circulation system for descaling thereof. An associated method is also provided.

Abstract: Method for treating bottom sludge in a storage tank, comprising the step of breaking up the bottom sludge of the tank by the use of one or more jets under pressure. The method is characterized in that it comprises the steps of: monitoring the state of the bottom sludge inside the tank by SONAR means; and adjusting the action of the jets during the breaking-up step according to the effects on the state of the bottom sludge detected by the monitoring by SONAR means.

Abstract: A method for operating a dishwasher that has a washing container; at least two spray devices disposed inside the washing container; a circulating pump to deliver liquid to the at least two spray devices; a first drive to drive the circulating pump; and a reversing device; wherein, based on a position of the reversing device, the circulating pump delivers the liquid to one or both of the two spray devices. The method includes adjusting the position of the reversing device and detecting the current position of the reversing device based on an operating parameter assigned to the first drive.

Abstract: A dishwasher includes a cabinet, a washing tub provided in the cabinet, a condensation duct to cool air in the washing tub and to discharge the cooled air outside of the dishwasher and having a guide duct to divide the cool external air and to mix divided parts of the cool external air with the air in the washing tub in stages, and a fan assembly to introduce the air in the washing tub and cool external air into the condensation duct.

Abstract: A dishwasher is provided that prevents foreign materials from remaining lodged in a filter. The dishwasher may include a sump in which washing fluid is collected, a filter provided in the sump so as to separate foreign materials from the washing fluid, and a cleaning device including at least one blade that scrapes foreign materials from the filter as the cleaning device moves, either in a rotating direction or a linear direction.

Abstract: A dishwasher having a washing compartment; a drying device to dry washed items, wherein the drying device has a sorption compartment to hold reversibly dehydratable sorption material; and an air-guiding air ducting channel between the drying device and the washing compartment to generate an air exchange between the washing compartment and the sorption compartment. In the sorption compartment, a weight of the reversibly dehydratable sorption material that is provided to absorb a moisture quantity conveyed by the air exchange is such that the moisture quantity absorbed by the reversibly dehydratable sorption material is less than a liquid quantity applied to items to be washed.

Abstract: A dishwasher has a washing compartment; an air-guiding channel; and a sorption drying system to dry items to be washed. The sorption drying system includes a sorption compartment with reversibly dehydratable sorption drying material. The sorption compartment is connected to the washing compartment by the air-guiding channel for passage of an air flow. The sorption compartment has a sorption unit with the sorption drying material. The geometric shape of the sorption compartment is such that the sorption unit is provided with a default through-flow direction for the air flow substantially in or against the direction of gravity.

Abstract: A method for testing the patency of an endoscopic channel in an endoscope washing machine. In the method, the entrance of the channel is pressurized and then blocked, whereupon the pressure change at the entrance is measured. Where the channel is pressurized using a sequence of pressure pulses, and the maximum and minimum values thereof are determined.

Abstract: A water-conducting household appliance has a washing container and is configured to carry out at least one wash program. A special cleaning program for cleaning the washing container is carried out when there is a start signal.

Abstract: An auto bending structure of sunshade comprising an upper section of bending and a lower section of bending movably riveted featuring that: a sliding rod is provided in the pivotally connected upper section of bending and lower section of bending, through holes are provided on the top and bottom of said sliding rod, the through hole on the bottom of said sliding rod is provided with a guide pin, an arc groove for said guide pin to slide on is provided on the scarf joint part of the lower section of bending, linear groves corresponding to said arc groove for said guide pin to slide on are provided on both sides of said groove of the upper section of bending, a sliding sleeve with a through hole on the bottom is provided on the top of said sliding rod, said through hole on the bottom of said sliding sleeve corresponds to the through hole on the top of said sliding rod, correspondingly, the upper section of umbrella stem is provided with a linear groove on the outer wall and is surrounded by a ring, which is con

Abstract: A walking aid comprising a shaft and a handle that, as viewed in a position of use of the walking aid, is disposed at an upper end of the shaft, the handle extending transverse to the shaft. The handle is inclined upwardly at an angle to the axis of the shaft. The handle is curved inwardly out of a plane formed by the handle and the shaft and toward the body of a user of the walking aid. When configured for right hand use, the handle is twisted clockwise, and when configured for left hand use, the handle is twisted in a counterclockwise direction.

Abstract: The invention provides a forearm type of crutch comprising an operatively upright staff having a ground engaging foot at one end and a transverse handle and forearm support assembly at the operatively upper end, and wherein the angle of inclination of the forearm support assembly to the staff is adjustable, wherein the angle of inclination of the forearm support assembly relative to the staff is adjustable by means of a pair of co-operating positioning portions, one being stationary relative to the staff and the other being stationary relative to the forearm support assembly and wherein the positioning portions have complementarily co-operating zones that are engagable in different angular positions of the forearm support assembly and staff to provide a desired angle of inclination of the forearm support assembly relative to the staff and wherein releasable clamping means operatively hold the positioning portions in a selected engaged position for use.

Abstract: A skirt for a lay-down type hunting blind of the type having a shell for enclosing an occupant in a recumbent position. The skirt comprises at least one panel having a proximate edge and a distal edge. The proximate edge of the skirt attaches to the top perimeter edge of the shell. The skirt's distal edge is securable to a ground surface such that the skirt may be extended outwardly from the top perimeter edge of the shell to a ground surface at a slope sufficiently gradual to minimize shadows and blend more naturally into outdoor environments.

Abstract: A thermoelectric segment and a method for fabricating. The fabricating includes forming structures by depositing thin-film metal-semiconductor multilayers on substrates and depositing metal layers on the multilayers, joining metal bonding layers to form dual structures with combined bonding layers; and removing at least one of the substrates; and using the dual structure to form a thermoelectric segments. The method can include dicing the dual structures before or after removing the substrates. The method can include depositing additional bonding layers and joining dual structures to make thermoelectric segments of different thicknesses. Each multilayer can be about 5-10 ?m thick. Each bonding layer can be about 1-2 ?m thick. The bonding layers can be made of a material having high thermal and electrical conductivity. The multilayers can be (Hf,Zr,Ti,W)N/(Sc,Y,La,Ga,In,Al)N superlattice layers. Metal nitride layers can be deposited between each of the bonding layers and multilayers.

Abstract: Methods for sputter depositing a transparent conductive layer and a conductive contact layer are provided in the present invention. In one embodiment, the method includes forming a transparent conductive layer on a substrate by materials sputtered from a first target disposed in a reactive sputter chamber, and forming a conductive contact layer on the transparent conductive layer by materials sputtered from a second target disposed in the reactive sputter chamber.

Abstract: This invention discloses a light-transmission thin film solar module and a process thereof. A light-transmission area is formed by using a mask-assisted sandblasting etching process comprising: positioning a mask to cover the back electrode of the thin film solar module; and performing a sandblasting etching process to the mask to form the light-transmission area of the thin film solar module. The light-transmission thin film solar module manufactured by using the process of this invention can include a light-transmission area of any pattern at a lower cost and in a large scale production.

Abstract: A cell includes a substrate of a first conductive type, at least one emitter region of a second conductive type opposite to the first conductive type, and disposed at the substrate, a plurality of first electrodes electrically connected to the at least one emitter region, and at least one second electrode electrically connected to the substrate, wherein the substrate is a silicon substrate of a metallurgical grade.

Abstract: Methods and systems for interconnecting back contact solar cells. The solar cells preferably have reduced area busbars, or are entirely busbarless, and current is extracted from a variety of points on the interior of the cell surface. The interconnects preferably relieve stresses due to solder reflow and other thermal effects. The interconnects may be stamped and include external or internal structures which are bonded to the solder pads on the solar cell. These structures are designed to minimize thermal stresses between the interconnect and the solar cell. The interconnect may alternatively comprise porous metals such as wire mesh, wire cloth, or expanded metal, or corrugated or fingered strips. The interconnects are preferably electrically isolated from the solar cell by an insulator which is deposited on the cell, placed on the cell as a discrete layer, or laminated directly to desired areas of the interconnect.

Abstract: A photoelectric conversion element module 1 comprises a plurality of photoelectric conversion elements 10 each having a first electrode 15 and a second electrode 25 that oppose each other, and a conductive member 30 electrically connecting the plurality of photoelectric conversion elements 10 to each other; the plurality of photoelectric conversion elements 10 are arranged in planar form such that directions from the first electrodes 15 toward the second electrodes 25 are the same; the first electrode 15 and second electrode 25 have extended portions 15a, 25a respectively which extend to outside a region encompassed by an outer periphery of a sealing member 17; and in adjacent photoelectric conversion elements 10A and 10B, the conductive member 30 connects the extended portion 15a of one of the photoelectric conversion elements 10A and the extended portion 25a of the other photoelectric conversion element 10B; and the extended portion 25a has flexibility.

Abstract: A punched metal tape having a conductive strip and an adhesive layer is provided to replace the conventional metal ribbon. The conductive strip surrounding a punched hole can be inversed to the opposite side of the metal tape to directly contact a back metal electrode of a photovoltaic cell.

Abstract: A photovoltaic module mounting system having a rack structure, which includes a mounting rack structure having a rail (5) and two clamps (6) for holding a photovoltaic module (7) by a bolt (3) extending from a press plate (4) on an outer side of the module (7) to one of the clamps (6) mounted in an upper input space (51A) in the rail (5). Entrances (50A and 50B) are provided relatively for each of the two input spaces (51A and 51B) each providing a space to input one of the at least two clamps (6), which are mutual perpendicular. The longitudinal input space (51A) in the upper section of the substantially H shape rail is used to hold the clamp (6) to fix the photovoltaic module (7). The lateral input space (51B) is used to hold the clamp (6) to fix the rail (5) to the pre-location. It has an excellent function on lateral and longitudinal location. And the structure is simple, compact, efficient, adaptable and saves on material.

Abstract: A solar battery module. The solar battery module includes at least one three-dimensional solar battery unit formed of one or more dye-sensitized solar battery cells. The three-dimensional solar battery unit may be disposed on an optical element configured to utilize light penetrated through the three-dimensional solar battery unit. The optical element may include another solar battery cell or a reflective plate.

Abstract: Light management systems and related methods disclosed herein are able to re-direct solar insolation. In some embodiments, a system for harvesting insolation may include a solar target, such as one or more photovoltaic assemblies and/or bioreactor targets. In some embodiments, a substantially uniform light distribution is provided within and/or on the targets.

Abstract: A Photovoltaic panel support base rotating simultaneously around two axes, i.e. around an horizontal axis (North-South direction) for the continuous correction of the swivel angle (?), and around a vertical axis (East-West direction) for the continuous correction of the hour angle (?), the solar deviation (?) and the azimuthal surface (?). The assembly comprises the tower (1), the base (2) with round profile, used for the anchorage and the seat of the assembly, the first drive mechanism (3) with ball bearings (16) for the rotation of the upper part around a vertical axis, the cantilevers' support assembly (4) of V shape, the rod (5), the second mechanism (7) for the rotation of the photovoltaic panels plane around an horizontal axis, the rotation axis (6) of the photovoltaic panels plane, the beams (8) of changing thin walled profile H and the series of transverse thin walled beams (9) of U profile. The frames of the photovoltaic panels rest on the frame formed by the U-shaped beams.