Abstract: A door having a door body that can be lifted, along a predetermined path, from a closed position in which it closes a wall opening into an open position in which it is located substantially overhead, the door body having two, three or more door body elements arranged one on top of the other in the closed position, is modified according to the invention in that a lower edge of the door body in the closed position and trailing during the lifting can be lifted separately, when the door reaches the open position, by a pivoting movement of a lower door body element having said edge in a lifting direction with respect to a door body element situated above it in the closed position relative to the predetermined path.

Abstract: A cargo securing device, a tonneau cover system comprising the cargo securing device, and a method of using the cargo securing device. The tonneau cover system includes a tonneau cover assembly having a tonneau cover and opposing frame rails supporting the tonneau cover on a cargo area of a vehicle. The cargo securing device includes a sleeve and an opening that provides access into the sleeve. The sleeve receives one or more panels of the tonneau cover so that the sleeve surrounds at least a portion of the one or more panels. The cargo securing device can be employed to secure cargo within the cargo area.

Abstract: A hot/cold aisle containment system includes a frame structure, at least one electronic equipment enclosure installed at least partially within the frame structure, and a header panel assembly. The frame structure is adapted to be at least partially covered by one or more panels to define an interior space and includes a vertical member and a horizontal member. The header panel assembly is installed between a top of the at least one electronic equipment enclosure and the horizontal member of the frame structure to prevent circulation of air above the enclosure. The header panel assembly includes a main panel and at least one seal.

Abstract: A drive system serves for reciprocating, between an extended position and a retracted position, a roll-up truck bed cover above a truck bed, said roll-up truck bed cover being composed of a rear profile, a plurality of elongate slats that are hinged together and has a foremost front slat, said drive system comprising at least one reciprocating means adapted for reciprocating the roll-up truck bed cover, and at least one reversible electric motor adapted for driving the reciprocating means. The at least one reciprocating means comprises at least one pulley system comprising at least one set of pulleys and at least one drive belt, which at least one set of pulleys includes a driven pulley and an idle pulley, and the drive belt is secured to the rear profile of the roll-up truck bed cover.

Abstract: Various types of lawnmowers are disclosed that include at least one cutter housing having a chamber wall with a discharge opening therein. The mowers can include a rolling shutter formed of multiple steel sheets held together by pins. In discharge mode, the rolling shutter can be wrapped around a roller cylinder. In mulching mode the rolling shutter can extend to close off the discharge opening of the mower.

Abstract: The invention relates to a vertically movable gate with a gate panel comprising several gate panel segments, where two adjacent gate panel segments are each hingedly connected to one another by way of at least one hinge, and with a motorized drive which transmits a force for lifting and lowering the gate panel via at least one drive means to the gate panel, and a connection means for connecting the drive means to the gate panel. Gates of the type mentioned at the outset are improved according to the invention such that, though such a gate can be moved easily between an open and a closed position largely independent of the forces arising, it nevertheless provides a compact and simultaneously stable and fail-safe design in that several gate panel segments are each individually connected to the drive means.

Abstract: An apparatus and method for forming new and novel portions of a garage door panel. This includes forming at least one decoration into a steel plate section and bonding to it a unique foam core where a mirror image decoration is routed into the foam core to exactly match the decoration. In addition, an aluminum diamond plate sheet with a front surface and a rear surface is bonded to the rear of the foam core. The aluminum diamond plate sheet also includes a sheet of steel affixed to its rear surface which rear surface is bonded to the foam core so that magnetic decorations can be attached to the front of the aluminum diamond plate sheet.

Abstract: The present invention relates to a gate with a gate panel, comprising several gate panel sections which are hingedly coupled to each other by way of hinges, where a hinge comprises two hinge panels of adjacent gate panel sections, at least one elongate drive means which is connected to at least one gate panel section, and at least one guide means which is suitable to guide the gate panel during its motion. In order to optimize the gate with regard to its installation space, in particular in the width and depth direction, and to ensure simple and inexpensive yet at the same time still reliable operation of the gate, it is proposed to arrange the elongated drive means at least in sections received in the gate panel section.

Abstract: A retractable truck bed cover having an array of parallel aluminum slats joined together by connective hinges including leading and trailing edge configuration for improving the security of the cover by covering and concealing the seam between adjacent slats while improving the connective hinge's resistance to the effects of aging and/or exposure to temperature fluctuations. The truck bed cover connective hinge slat is designed to be in an array of discrete slats, which are joined to one another by means of joiner members secured at each end to slat end caps. The distal ends of the joiner members are attached to slat end caps at the distal ends of the slats, thereby preventing the joiner members from shrinking in relationship to the slats due to aging and I or exposure to temperature fluctuations.

Abstract: The “Breeze screen” invention concept is designed to serve as a simulated natural “breeze gate” to keep garages cool and clean when they are opened. The mesh “breeze gate” feature serves to keep garbage and debris out of the inside garage space, while allowing the natural outdoor air ventilation in to keep the garage cool. It attaches to the existing garage door and can be “dropped down” and locked in place for security with its use. It functions by the design of a fine mesh panel or “screen” network, made of either metal, aluminum, plastic or other fabric of manufacturer's choice to allow airflow through the fine “air holes” that make up the “breeze gate” or “breeze screen” concept. Thus allowing air through to keep the garage cooler, but keeping larger unsightly particles out of the garage, such as leaves, trash and debris.

Abstract: A protective housing for a testing, measuring or production device has a protective element, which seals a housing opening and is held and guided by guide devices and can be moved into an open position by a drive device. The guide devices have arched sections which are outwardly curved forward and extend backwards in a straight line on an upper side of the protective housing. The protective element includes two flexurally stiff rectangular plates, which have straight longitudinal sides and a curve approximating the arched sections and are connected to each other on a longitudinal side via a hinge. The guide devices include a number of guide elements guided on a guide rail, wherein a respective guide element is arranged on the hinge and further guide elements are arranged on both sides of the hinge. The drive device drives the rearmost guide element via two traction transmissions, which have traction mechanisms running parallel to the straight section of the guide devices.

Abstract: A retractable cover system includes laterally spaced apart guide rails that each provide a track. A drive assembly includes a motor operatively connected to a gear. A cover has multiple slats configured to interlock with one another in a deployed configuration. The slats cooperate with the gear and are slidable in the tracks between first and second positions within the opening in response to actuation of the drive system. The slats are stacked onto one another in a stowed configuration. A method of servicing a retractable cover system includes the step of removing an access cover from a magazine to expose a cavity housing stacked rigid slats. A method of retracting a tonneau cover includes the steps of actuating a handle and decoupling the tonneau cover from a drive mechanism.

Abstract: A target system includes a lower rod configured to be removably inserted, at a lower end, into the ground; and an upper rod assembly. The upper rod assembly includes an upper rod configured to be coupled, at a lower end, to an upper end of the lower rod. The upper rod assembly also includes a mounting assembly coupled to an upper end of the upper rod and configured to hold a target.

Abstract: A component for a vehicle interior is disclosed. The vehicle trim component may comprise a base comprising a compartment; a cover coupled to the base configured for movement relative to the compartment; a blocker coupled to the base configured to selectively engage with the cover; and a mechanism coupled to the blocker. The mechanism may be configured to move the blocker between a deployed position when the cover is not engaged with the blocker and a retracted position when the cover is engaged with the blocker.

Abstract: Baffle systems for conveyor-type dryers and methods of replacing baffle seal strips for improving dryer safety and/or efficiency are provided. The systems include one or more baffles removeably mounted to the dryer. Each baffle has at least one seal strip for contacting a roller of the dryer to prevent gases from entering and/or exiting the dryer. The baffles are removable from the dryer so that the seal strips can be replaced and/or adjusted when the seal between a given seal strip and a contacting roller become compromised. To replace and/or adjust a seal strip, the baffle is removed from the dryer and a new baffle is installed in its place. The one or more seal strips of the removed baffle may be replaced and/or adjusted outside the dryer at the leisure of the operator.

Abstract: A garage door locking system that includes a single actuator locking box that integrates with existing garage door openers to form a system that is easy to install and that can not only open and close the garage door, but provide a sequential locking/unlocking function. The actuator utilizes a rack and pinion gear that moves the locking bar in a horizontal position to lock or unlock. A lighted indication LED extends from the system to the outside of the garage door so that the locked state of the door can be seen from the outside. The actuator box utilizes LED lights that light up to show proper alignment of the magnet mounted on the track Specialized clips both tie down the power cords from the actuator box and provide a magnetic activation that indicates to the CPU to move the bar to lock and also indicate the door position at all times.

Abstract: Door with a door leaf which, starting from a closed position, can be wound up to form a multi-layer winding in the course of an opening movement and has a plurality of slats which customarily extend horizontally with their longitudinal axes approximately perpendicular to the direction of the opening movement, and with a guide arrangement for guiding the opening movement comprising preferably helically shaped guide rails in the region of the lateral edges of the slats in planes extending approximately perpendicularly to the longitudinal axes of said slats, and guide elements mounted on lateral edges of the slat which leads during the opening movement can be introduced into the radially outermost windings of said guide rails, wherein the guide elements (42) are fastened to the lateral edges of the leading slat (40) via pivot levers (50) on the leading slat and are mounted on the slat so as to be pivotable with respect to pivot axes extending parallel to the longitudinal axis of the slat.

Abstract: Aspects of the disclosure provide an adjustable storage panel apparatus for a vehicle (e.g., bus) that includes an upper panel assembly; a lower panel assembly, wherein an upper edge of the lower panel assembly pivotably engages a bottom edge of the upper panel assembly; opposing horizontal tracks comprising a front end and a back end, the horizontal tracks configured to be disposed on each of opposing side walls of the vehicle, wherein the lower panel assembly slideably engages each of the opposing horizontal tracks; and opposing vertical tracks comprising an upper end and a lower end, the vertical tracks configured to be disposed on each of opposing side walls of the vehicle along a vertical plane.

Abstract: Side rails can include a longitudinally extending rail track having support surfaces and a plurality of longitudinally extending linear grooves. A storage housing can provide storage tracks in alignment with the forward end of the rail tracks. In addition, a roll-up tonneau cover can include a plurality of slats pivotally connected together. Corresponding first and second sides of the slats can be supported above the grooves on a respective one of the support surfaces of the rail tracks. The slats can be movable along the support surfaces between a storage arrangement wherein the slats are supported by the storage tracks to provide access to the cargo box, and a deployed arrangement wherein the slats are supported by the support surfaces of the rail tracks to cover the cargo box.

Abstract: A ventilation system for sectional-type garage doors, utilizing rollers and axle pins with device bodies of adjustable geometry to hold the upper section of the sectional door at an inwardly-rotated angle to facilitate venting of the space. Component installation and operation does not impact normal operation and is completely reversible, requiring no modifications to the door itself.

Abstract: An article of manufacture for use as an insulated overhead door that is designed to roll open and closed in tracks, with a sheet of thermoplasitc material that acts as the outer door membrane and barrier to entry, a sheet of insulating material that acts as a base insulating barrier adhered to the thermoplastic membrane.

Abstract: A tonneau cover for covering a cargo box of a vehicle. The tonneau cover includes a plurality of flexible hinges, each of which is between two rigid members. Each flexible hinge includes an elastomeric material having a first portion connected to a first one of the rigid members, a second portion connected to a second one of the rigid members, and a web between the first portion and the second portion. A cut-resistant barrier is associated with the flexible web and bridges between the first portion and the second portion. The cut-resistant barrier is effective to resist penetration by a sharp edge.

Abstract: An apparatus selectively distributes air flow through a cooler to maintain cool air over garnish in the cooler. A cooler cavity includes a lower region where the air is generated, and an upper region where a cooler lid performs the dual purpose job of regulating access to the garnish and controlling a vent for directional air flow throughout the cooler. A container of garnish rests between the upper and lower regions. A vent positions adjacently to the container. A fulcrum extends from the vent. A force, such as the cooler lid, presses down on one end of the vent to tilt the vent between the closed and the open positions. The container and the vent form a barrier between the upper and lower regions from the closed position. The vent guides air flow from the lower to the upper region, and over the garnish from the open position.

Abstract: An embodiment of the present invention disclose a flexible display device, comprising: a housing; a supporting member, disposed inside the housing; a flexible display screen, having a first end and a second end opposite to each other, the first end being connected with the supporting member and being able to rotate around an axis; and at least one bracket rotationally connected with the housing and having a slot is arranged thereon, wherein, a side edge portion of the flexible display screen located between the first end and the second end is capable of moving along a direction of the slot under guidance of the bracket.

Abstract: A cable limiting device is for connecting to a connection device of a server. The connection device includes a motherboard, a bridgeboard, and a port disposed on the bridgeboard and coupled to the motherboard. The cable limiting device includes a side plate having a longitudinal opening and a transverse slot communicated with each other, a casing, and a cable fixed in the casing. A pillar of the casing passes through the longitudinal opening to be slidably disposed through the transverse slot and be movable relative to the transverse slot for making the casing away from or close to the side plate. When the cable is connected to the port, the casing is away from or close to the side plate with movement of the pillar in the transverse slot for guiding a gold-plated terminal of the cable to be inserted into the port and establishing signal transmission via the bridgeboard.

Abstract: Device for extracting and collecting air conditioning hoses, has a flexible hose with a perimeter relief, rolled up as a helicoid along the same, a storage body inside which the hose is housed according to a longitudinal shaft of the same and a tractor unit, connected to the storage body, which also has an extraction and collection mechanism configured to extract and collect the hose. The extraction and collection mechanism has one or more helicoidal spindles, in contact with the perimeter relief, each one of which is configured to rotate according to a rotation shaft parallel to the longitudinal shaft, the rotation of which gives rise to a push force on the relief, which causes a linear displacement of the hose along the length of the longitudinal shaft.

Abstract: Improvements to movable closure systems which aid installability and reliability of said systems can include wheels running along the top and bottom of individual slidable elements, the wheels oriented horizontally and disposed within a track configured for receiving the horizontal wheels. The horizontal wheels reduce the vertical profile of the track-engaging portions of the slidable elements, enabling more of the slidable element to be used for glass or other aesthetically-preferable transparent materials. A track leveling system enables installers to more easily deploy and properly tune the system between floors and casings which are not perfectly flush. A compression jamb permits closure of the system via slidable elements pressing into the jamb to deflect it in order to better seal the closure comprised of the individual slidable elements. A durable hinge mechanism permits the sliding elements to rotate in order to stack the sliding elements at one end of the system.

Abstract: An improvement in garage door tracks which includes placing an inwardly pressed hem on the distal ends of the sections of track which surround the gap by which wheels from a garage door are placed into a track chamber. The hems on the distal end provide increased strength and a safer smoother edge. The inward hemming also does not interfere with the roller wheels of the garage door. This further solves the problem of track failure and bulge or crimping and causes less stress on the garage door track. A further innovation is to have strengthening ribs at different locations on the garage door track to provide further strength to the garage door track. A further innovation is to provide strengthening ribs at different locations on the garage door track to provide further strength to the garage door track.

Abstract: A vending machine proofed against the pinching of a customer's fingers and with a security feature includes a cabinet, a receiving tray, a shielding board, and gear wheels. The cabinet includes a cabinet body and a door rotatably attached to the cabinet body. A number of merchandise shelves are located in the cabinet body. A through opening is defined in the door. The receiving tray is attached to an inside of the receiving tray and aligned with the through opening. The shielding board covers the through opening and is toothed to allow lowering for access by the customer to the bought merchandise when the internal drop of an item of merchandise is sensed and raising after the sensed removal of the item.

Abstract: A roller hinge assembly for connecting articulating door panels and simultaneously supporting a laterally extending panel support roller assembly includes multiple uniformly sized hinges having a male hinge strap and a female strap. Two or more such uniformly sized hinge units are arrayed laterally or side by side co-joined by a single hinge pin. Further, to insure appropriate alignment, a tubular roller bushing co-joins the male or the female hinge straps.

Abstract: A shutter-blind system for windows is provided. The system includes a frame and a plurality of rotatable parallel louvers coupled within the frame. Each louver of the plurality of louvers is operatively coupled to adjacent louvers with a collapsible linkage. The system may further comprise a biasing member coupled to a first louver located at a first end of the plurality of louvers and a resisting member coupled to a second louver located at a second end of the plurality of louvers. The biasing member pulls against the resisting member to maintain tension in the collapsible linkage. According to certain embodiments, the frame elements are coupled within a window opening and trim elements are coupled to cover gaps between the frame elements and the window opening.

Abstract: Overhead door panels are used in a variety of overhead doors styles and construction designs, each of which may be of different panel thicknesses and construction. Each of the panels includes a window opening to receive a window assembly therein. Window frame sub-assemblies are substantially interchangeable with one another and may be used in the variety of overhead door panel construction styles. Each window frame sub-assembly may include a front frame to be installed in the window opening. Glazing elements are mounted within each of the front frames and fasteners secure the glazing element to the front frame. Retainers may be juxtaposed to the back face of the door panels and coupled to one of the window frame sub-assemblies to thereby provide a window in the respective first or second overhead door panels.

Abstract: A roll-up door has a plurality of panels and a plurality of roller assemblies mounted to ends of the panels for mounting the panels in channels. At least some of the panels are formed of blow-molded thermoplastic material and have a relatively flat outside face and an inside face including open channels that extend longitudinally and transversely on the panel. A reinforced panel of thermoplastic material is made by blow molding a panel with a thermoplastic material to form a relatively flat outside face and a ribbed inside face, and with elongated channels along upper and lower portions thereof. The panel may be trimmed while it is still warm to open the channels at one end. While the panel is still warm, reinforcing members may be inserted into the elongated channels. The panels may be cooled to shrink the channels onto the reinforcing members.

Abstract: A closure device for closing off, at least in part, a cavity (1) that is open at its top, includes a set of panels (3) suitable for forming a closure cover and cover support element (13). Each panel has link elements for linking to the neighboring panel(s) (3) so as to enable the set of panels (3) to go from a stacked configuration, in which they are superposed on one another in order to open up the opening in the cavity (1) at least in part, to a deployed configuration, in which the panels of at least some of the set of panels (3) extend in alignment with one another while bearing against the cover support element (3). The device further includes elastically deformable elements (4) suitable for being compressed by the panels when the set of panels (3) are in the stacked configuration.

Abstract: The invention is a security trolley lock for garage door openers. The trolley lock is a “U-shaped” element that removably attaches to a garage door trolley for preventing lateral access to the release lever of a garage door opener system. The trolley lock has a pass-through opening for allowing attachment of said trolley to a garage door trolley and another pass-through opening for receiving a lock means preventing unauthorized actuation of the release lever.

Abstract: A sectional garage door has a roller track and a plurality of sections pivotally coupled together for movement along the roller track to and between open and closed positions relative to a door opening. A first one of the sections is heavier than other sections. The sectional garage also includes a counterbalance mechanism coupled to the sections to assist an operator in moving the sections along the roller tracks to and between the open and closed positions. The sectional garage door also has a weight assist mechanism coupled to the door and engaged with at least one of the sections to assist at least one of the sections to assist in the movement of the first one of the sections during movement along at least a portion of the roller track due to the weight of the first section relative to the other sections.

Abstract: Overhead door decelerator assemblies and associated devices, systems, and methods are disclosed herein. In one embodiment, a door assembly includes a door, an elongated door track, and a brush proximate the door track. The door includes a guide member extending outwardly from a side edge portion of the door. The brush is positioned such that moving the door between open and closed positions causes the guide member to deflect a resilient portion (e.g., a plurality of bristles, a plurality of flaps, or a blade) of the brush at regions of the resilient portion consecutively positioned along the length of the brush. The brush can be positioned away from the door when the door is in the closed position and in contact with a portion of the door when the door is in the open position.

Abstract: A system for allowing a loading dock door to release from guide tracks. The dock door includes wheel-and-axle assemblies which are mounted to the door and which include wheels biased towards a position in the tracks. At least one of the tracks has a cross sectional profile which enables the wheels disposed in the one of the tracks to move out of the one of the tracks when the door is struck with sufficient force.

Abstract: A sealing mechanism for retaining a roll-up garage door in surface sealing engagement with adjacent door jambs to prevent air leakage around the roll-up door has brackets secured to opposite sides of the roll-up door cooperating with roller holders attached to the door jambs to hold the roll-up door when in its closed position in surface sealing engagement with the door jambs.

Abstract: A carriage includes body, at which at least one first roller is freely rotatably mounted, as well as a carriage suspension member with an upper terminal section is supported at or in the body and, with regard to the body, is pivotable about at least one axis of rotation extending parallel to the longitudinal extension of the carriage. A lower terminal section, the carriage suspension member is configured to extend in a downward direction towards a panel to be moved. The lower terminal section is adapted to suspend the panel to be moved therefrom. An axis of rotation of the at least one first roller extends transversely to the downward direction and transversely to a tangent of the travel path of the at least one panel to be moved in an area of the at least one first roller.

Abstract: Overhead door panels are used in a variety of overhead doors styles and construction designs, each of which may be of different panel thicknesses and construction. Each of the panels includes a window opening to receive a window assembly therein. Window frame sub-assemblies are substantially interchangeable with one another and may be used in the variety of overhead door panel construction styles. Each window frame sub-assembly may include a front frame to be installed in the window opening. Glazing elements are mounted within each of the front frames and fasteners secure the glazing element to the front frame. Retainers may be juxtaposed to the back face of the door panels and coupled to one of the window frame sub-assemblies to thereby provide a window in the respective first or second overhead door panels.

Abstract: A self-engaging emergency egress lock assembly mounted to a door track is described. As a door lock strike element contacts a lock strike assembly contained within the door lock assembly, the strike assembly hinges over the door lock strike element. When the door reaches a predetermined down limit power is applied to activate an actuator. Upon activation, the actuator engages a lock strike stop which prevent the strike assembly from disengaging the door lock strike element. If the door is attempted to be opened while the lock strike stop is engaged, the lock strike assembly pushes against the stop, preventing the door from traveling upward. In an emergency egress (alarm) condition, power to the actuator is terminated, thereby releasing the lock strike stop and by extension, the strike assembly, thus disengaging the door lock strike element, thereby providing emergency egress capability.

Abstract: A roller hinge assembly for connecting articulating door panels and simultaneously supporting a laterally extending panel support roller assembly includes one or more hinge units each having a male hinge strap and a female hinge strap. The structural integrity of one or more of the hinge units is supplemented by a reinforcing, slotted tubular member fitted over the roller axle support bushing which extends between and simultaneously engages opposed, spaced hinge strap arms. Two or more such hinge units may be arrayed laterally or side by side co-joined by a single hinge pin. Further, to insure appropriate alignment, a single tubular roller bushing may co-join the male or the female hinge units.

Abstract: A linkage comprises a first rounded end providing a complimentary profile configured to mate with an inner radius of a loop element in a first drawbar spring, and a second rounded end opposite the first rounded end. The second rounded end provides a complimentary profile configured to mate with an inner radius of a loop element in a second drawbar spring. The linkage is configured to be positioned between the loop element in the first drawbar spring and the loop element in the second drawbar spring such that the first rounded end is mated with the loop element in the first drawbar spring and the second rounded end is mated with the loop element in the second drawbar spring to mechanically couple the first drawbar spring in series with the second drawbar spring.

Abstract: An overhead door assembly includes a horizontal track, a transition track and a vertical track. The horizontal track has a first axial end and an oppositely disposed second axial end. The transition track has a first end and a second end and is curved. The first end is engaged to the second axial end of the horizontal track. The vertical track includes a first end portion and a second end portion. The first end portion is rigidly mounted to the second end of the transition track. The vertical track includes a plurality of guide portions and a plurality of jog portions that are alternately disposed along the vertical track. The plurality of guide portions and the plurality of jog portions cooperatively define a channel. The plurality of jog portions is offset from the plurality of guide portions.

Abstract: An overhead garage door has an apparatus for pinch resistant operation. The garage door may include horizontal sections and the door may be formed from a plurality of these sections, arranged in a stack, and pivotally connected to adjacent sections. The apparatus, such as meeting rails, may be attached to adjacent horizontal sections to mask the appearance of a seam created as adjacent sections are joined or provide pinch resistant operation.

Abstract: The present disclosure pertains to a sliding overhead door operator system for an overhead door not employing a counterbalance mechanism. The operator system comprises an overhead door including first and second side edges, the door includes a plurality of hingedly connected longitudinally extending panels. Additionally, a first rodless cylinder is located adjacent the first side edge of the door and a second rodless cylinder is located adjacent the second side edge of the door. Each of the first and second cylinders includes a carriage. First and second bracket assemblies are provided such that each assembly includes a first portion secured to a respective carriage of one of the first and second rodless cylinders and a second portion secured to one of the plurality of panels. A controller is adapted to actuate the first and second rodless cylinders to move the door up and down.

Abstract: A door strut construction includes a strut having a top cross wall connecting lateral side walls that are part of a truncated isosceles triangle and wherein the lateral cross wall joins first and second spaced pylons attached to the top edge of the side walls and further wherein the bottom edge of the side walls include projecting plate members having upstanding, outside lips for reinforcement. The strut further includes lateral ribs positioned in the upper half region of the side walls to improve torsion resistance.

Abstract: A covering device such as a protective guard or screen, in particular for machine tools, has a link apron with a plurality of links connected to one another in an articulated manner and sliding elements arranged on the links at the end. The link apron is guided by means of the sliding elements on at least one guide element, the at least one guide element having at least one linear guide portion and at least one curved guide portion with a radius R of curvature. For lateral support of the link apron in the region of the at least one curved guide portion, at least one support unit is provided, which has a plurality of support rolls, which are rotatably mounted and rest against the link apron. The support rolls in each case have a roll radius r, which is smaller than the radius R of curvature. The robustness and the service life of the covering device is increased by the at least one support unit.

Abstract: Overhead gate systems include a gate assembly having a barrier and that defines a passage. When in a deployed configuration, the barrier is adjacent to the ground and restricts ingress to and egress from the installation site, and the passage is distal the ground surface relative to the barrier, permitting access to and from the installation site via the passage. When in a stowed configuration, the barrier is not adjacent to the ground surface and does not restrict ingress to and egress from the installation site.