Abstract: A web locating device for locating a shear web at a predefined location on an inner surface of a wind turbine blade shell is described. The base comprises a base and a first guide structure. The base is for securing to the inner surface of the blade shell at a predefined position on the inner surface and the first guide structure projects from the base. The first guide structure has a first guide surface arranged to guide a mounting portion of the shear web towards the predefined location on the inner surface of the wind turbine blade shell. The base of the device includes one or more alignment features for aligning with one or more reference features at the predefined position on the inner surface of the blade shell. Also described are a wind turbine blade, and a method of making a wind turbine blade.

Abstract: An arrangement for mounting an actuator button to a rail wherein the fastener for securing the button housing to the rail is hidden from view of the user.

Abstract: A propeller blade retention arrangement having a propeller blade comprising in radial sequence an aerofoil portion, a shank portion and a root portion. The root portion having first cross-sectional area close to the shank portion and second cross-sectional area at the end distal to the aerofoil portion, wherein the second cross-sectional area is greater than the first cross-sectional area. At least two cheeks each having an inner surface arranged to abut the root portion, an outer surface that is threaded and edge surfaces that abut another of the at least two cheeks; wherein the at least two cheeks are arranged to surround the root portion in circumferential abutment. A collar having a threaded inner surface arranged to threadingly engage the outer surfaces of the at least two cheeks.

Abstract: A rotary wing aircraft apparatus has arms extending from a body, and a rotor assembly attached to an end of each arm. Each rotor assembly has a rotor blade releasably attached by a lock mechanism. A clockwise rotor blade is releasably attached to a first rotor assembly by engagement in a clockwise lock mechanism, and a counterclockwise rotor blade is releasably attached to a second rotor assembly by engagement in a counterclockwise lock mechanism. The clockwise rotor blade is engageable only with the clockwise lock mechanism and the counterclockwise rotor blade is engageable only with the counterclockwise lock mechanism and cannot be engaged in the clockwise lock mechanism. A leg extends down from each rotor assembly to support the apparatus on the ground.

Abstract: A milling tool is disclosed having a front head and a rear holder, which are detachably connected by means of a male/female coupling as well as a screw and a washer. Via a main duct, cooling liquid is fed to a chamber, from which it is fed out via branch ducts to individual milling inserts. The front chamber is closed by means of a cover that is held applied against a ring surface surrounding the chamber. The cover is tightenable by means of a threaded joint that is operative independently of a threaded joint between the screw and a front section of the main duct.

Abstract: A fencing panel includes a rail having openings in a first side to receive elongate members. A longitudinal channel is provided along a second side of the first rail, the second side being perpendicular to the first side. A set of second openings are provided within the longitudinal channel, each of the second openings corresponding to one of the first openings. Wedge members are inserted into each of the second openings such that the wedge members engage with the first rail, and an elongate member is inserted into the corresponding first opening such that the elongate member is secured to the first rail. A side cover plate is securable across the longitudinal channel.

Abstract: Systems, methods, and devices for propelling self-propelled movable objects are provided. In one aspect, a rotor assembly for a self-propelled movable object comprises: a hub comprising a first fastening feature; a drive shaft comprising a second fastening feature and directly coupled to the hub by a mating connection of the first and second fastening features, wherein the drive shaft is configured to cause rotation of the hub such that the mating connection of the first and second fastening features is tightened by the rotation; and a plurality of rotor blades coupled to the hub and configured to rotate therewith to generate a propulsive force.

Abstract: A corner piece is provided for interconnecting frame members. The corner piece includes a first plate member defining an inner face, an opposite outer face, a first side face, an opposite second side face, and an end face. The first plate member including a bolt-receiving bore therethrough. A second plate member defines an inner face contiguous with the inner face of the first plate member, an outer face, a first side face, an opposite second side face, and an end face. The second plate member includes a bolt-receiving bore extending between the inner face and the outer face thereof along a first axis generally parallel to the inner face of the first plate member.

Abstract: A connection assembly is provided for a frame structure. The connection assembly including a first plate member defining an inner face, an opposite outer face, and a bolt-receiving bore extending between the inner face and the outer face thereof along a first axis at an acute angle to the outer face. A tubular collar operatively connected to the first plate member. The tubular collar has a first end and an open terminal end for receiving a first end of a support rod.

Abstract: A guardrail for protecting persons against accidentally falling out of open floors. The guardrail has a number of constructional elements and connectors for assembling a coherent guardrail. The connectors include at least one first connector which has a longitudinal shape and is formed with at least one longitudinal extending slot, and at least one second connector having a first connector part to be connected to the at least one constructional element and a second connector part to connect the first connector part to the at least one first connector while engaging the at least one longitudinal extending slot of that connector. The guardrail has a stable, inexpensive and simple structure which quickly and easily can be assembled to a coherent guardrail and be disassembled. The guardrail can be fitted too to the width and height required of the guardrail for a specific opening of a given open floor.

Abstract: A fastening arrangement for a wall-supported and floor-supported element of an interior fitting on the side wall of a rail vehicle is provided. A C-section rail is arranged on the side wall for receiving sliding blocks to which the element is releasably screwed. The element is provided with a shaped part which at least partially encompasses the C-section rail and extends in the longitudinal direction of the C-section rail. The shaped part is supported on at least both of its ends on the outside of the C-section rail for absorbing vertical loads and moments, and, for absorbing the longitudinal and transverse forces acting on the shaped part, the shaped part is connected to at least one sliding block which is arranged between both ends of the shaped part in the C-section rail.

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: Lifeline systems include a worker harness hooked and slideable along a cable attached to a ratchet mechanism and extending between posts, through stand off pipes, or the like and generally parallel to, but spaced from, sides of a tank. The lifeline system utilizes supports which can be removably attached to the reinforcement rib or the cantilevered edge of the tank. The supports can include fastening rings to connect to braces, stabilizers or the ratchet mechanism. The reinforcement rib is received in an omega shaped channel and sandwiched by a clamp located on the first side and moveable relative to a second side of the channel. The cantilevered edge is received between upper and lower plates extending in openings of C-shaped sides in a spaced, angled relation and is sandwiched by a fastener threadably received in the upper plate.

Abstract: A frame member is provided for a structure. The frame member includes a generally flat, elongated first surface having an elongated slot therein extending along an axis. The slot is defined by first and second converging sidewalls lying in corresponding planes which are at acute angles to the first surface. A first diverging outer abutment wall is generally perpendicular to the first converging sidewall and a second diverging outer abutment wall is generally perpendicular to the second converging sidewall. A first diverging inner abutment wall is generally perpendicular to the second converging sidewall and a second diverging inner abutment wall is generally perpendicular to the first converging sidewall.

Abstract: A connection assembly is provided for interconnecting to a frame. The connection assembly including a generally flat plate. The plate is defined by an inner face, an outer face and a first pair of bolt-receiving bores therethrough. The pair of bolt-receiving bores extend between the inner face and the outer face along bore axes at acute angles to the outer face. A first lip extends from the inner face of the plate along a first axis and a second lip extends from the inner face of the plate along a second axis generally perpendicular to the second axis.

Abstract: A device for fastening an object, preferably a hinge, to an extruded profile. The device includes a sliding block that is connected in a known way with the a hinge arm via webs on the upper surface of the block, and having one lateral surface on the bottom side ended by a longitudinal snap tooth, and another lateral surface ended in an undergrabbing prong. The fastening device includes at least one pair of resilient elements. The resilient elements are arranged in cutouts formed on the bottom side of the sliding block symmetrically with respect to the main axis of the hinge. The resilient element is arranged in the cutout in a way to protrude from the said the sliding block in the area of the lateral wall of the sliding block.

Abstract: A bracket for mounting a heat sink on a printed circuit board includes two supports, two rails slidably attached to the supports, four adjusting assemblies slidably attached to the rails and four positioning members extending through the supports to engage with the rails to position the rails on the supports. Positions of opposite ends of the rails in the supports are adjustable along a first direction. Each of the rails defines two spaced slide slots in opposite ends of the rail. The supports and the rails are attached to a first side of the printed circuit board. Positions of the adjusting assemblies in the slide slots are adjustable along a second direction perpendicular to the first direction. The adjusting assemblies extend through the circuit board to engage with the heat sink at a second side of the printed circuit board.

Abstract: Exemplary systems and methods described herein can be used to secure a rail to a module or the rail to a support using a nut that can be inserted at a desired point of mounting. Another exemplary system describes a flashing to be inserted under a roof shingle, wherein the flashing is secured to a support for a rail or module. Yet another exemplary system describes a clamp that secures a rail or module and is adjustable along the length of a post. Spacers can be added to the post to extend the adjustment range of the clamp.

Abstract: Various methods and devices are provided for securing a walking beam compressor to a walking beam. In general, the walking beam compressor is a gas compressor unit that can be disposed around a piston rod extending from a walking beam of an oil well. The piston rod can be coupled to the walking beam by a securing mechanism that engages both the piston rod and the walking beam to prevent the piston rod from disengaging from the walking beam during rocking movement of the walking beam.

Abstract: A connector is configured to connect two frame members. The connector includes a body with a first end and a second end spaced from the first end. A fulcrum is coupled to the body between the first end and the second end. The body is configured to be received in a channel of a frame member and pivots about the fulcrum inside the channel between a first pivot position in which the frame members are free to move relative to one another and a second pivot position in which the frame members are locked against relative movement.

Abstract: A dowel assembly for a furniture system provides a fastener usable in assembling various components in a furniture system. The dowel may be employed to define the relationship between first and second components of the furniture system, such as the relationship between adjoining planar surfaces of adjacent furniture panels. The dowel is fitted with a cam such that the cam provides a non-uniform radius at the interface between the dowel and one of the components. Through selective positioning of the cam about the longitudinal axis of the dowel, the interface between components of the furniture system may be selectively adjusted to ensure flush alignment of contiguous surfaces.

Abstract: A vehicle framing system for framing an automotive vehicle body from a plurality of separate body components wherein the body components each include a reference surface. The system includes an assembly station having spaced-apart frame members positioned so that, when a vehicle carrier supporting the vehicle body components is positioned at the assembly station, the frame members extend along opposite sides of the vehicle carrier. At least two docking stations are secured to each frame member at predetermined locations. A robot mounts its associated tool arm with a docking station. At least one set of reference block and framing clamp is secured to each tool arm and these framing clamps maintain the reference surfaces of the vehicle body components against the reference blocks to hold the vehicle components at a predetermined position relative to each other.

Abstract: A self-aligning coupling device for installation in a channel having an open end and a pair of substantially parallel side walls. The device includes an elongate connecting portion having a longitudinal axis, a channel abutment portion, and at least one laterally projecting lug. In use, the coupling device is installed in the channel with the channel abutment portion located at least partially within the channel and the laterally projecting lug located outside the open end of the channel. The channel abutment portion is formed such that when aligned in a first angular position within the channel it abuts the side walls of the channel to prevent rotation of the device in a first rotational direction about said longitudinal axis, while allowing rotation in a second, opposed rotational direction. The lug is formed such that in said first angular position it extends beyond at least one of the side walls of the channel.

Abstract: Various methods and devices are provided for securing a walking beam compressor to a walking beam. In general, the walking beam compressor is a gas compressor unit that can be disposed around a piston rod extending from a walking beam of an oil well. The piston rod can be coupled to the walking beam by a securing mechanism that engages both the piston rod and the walking beam to prevent the piston rod from disengaging from the walking beam during rocking movement of the walking beam.

Abstract: A lock has a preferably generally box-shaped body and a handle joined by and formed integrally with a narrower neck. The lock is useful for removably securing, without the need for semi-permanent attachments, Christmas light strings or other objects into a track system, which can run along the exterior of a structure. The body preferably can be rectangular in cross-section with rounded corners and slanted side walls and is dimensioned such that the manually turned handle rotates the body to press snugly against the inside walls of the track in one direction and fit loosely in the other direction.

Abstract: A clamping joint system is provided for the detachable junction of two elements, of which at least one comprises an undercut longitudinal slot and the other one (12) comprises a receiving space (14) formed therein. The clamping joint system comprises a clamping element (18), which can be inserted into the receiving space (14). The clamping element comprises a housing (42) and anchor elements (22), which can be clamped against the undercut of the longitudinal slot by actuating an actuation member (19). One outer surface of the housing (42) of the clamping element (18) has an elevation (55). The elevation is formed such that it provides a tolerance compensation between the housing (42) and a surface of the receiving space (14) of element (12), when the clamping element (18) is inserted in the receiving space (14).

Abstract: A connector system that provides a profile connection having two profiled rods that are to be connected to one another and that each comprise at least one undercut, longitudinally oriented profile groove. The connector system may include a connecting screw with a screw head and a screw shaft as well as a threaded sleeve. The connecting screw is dimensioned such that it passes through the threaded sleeve and with part of its shaft, by way of the sleeve, can be engaged with a thrust bearing piece in the profile groove of the second profiled rod. The connecting screw is fixed in the threaded sleeve by a releasable anchoring element so as to be ready for installation. Thus, an assembly unit is created that can be screwed as a whole into the profile groove of the first profiled rod.

Abstract: A connection (10) of two streamlined-section struts (12, 14) running orthogonally to one another with an essentially rectangular base cross section (18) uses a connector (16). The lateral surface (18a) of one (14) of the streamlined-section struts has a mounting groove (18b), as well as an edge flange (18c), which projects substantially orthogonally from an edge of this lateral surface (18a) at a predetermined distance (b). The connector (16) can be attached to the lateral surface (18a) of the one streamlined-section strut having the mounting groove (18b) and to the front side of the other streamlined-section strut (12). The contour of the connector (16)is accommodated substantially completely within the base cross section (18) of the other streamlined-section strut (12). In addition, the depth of the connector (16) is essentially the same as the predetermined distance (b).

Abstract: The present invention provides a method for assembling structural members of thin and lightweight shaped steel, the thin and lightweight shaped-steel members to be assembled having at least one joint hole or concave/convex portion at an appropriate position of a flange or web of the thin and lightweight shaped steel member, and temporarily joining portions of the thin and lightweight shaped steel members to each other for easy assembly.

Abstract: A clamping element with a sliding block is provided for fixing in an undercut groove with a narrower insertion area and a wider groove base, as well as a device for fixing cam rails to a machine part, with a clamping element having the sliding block and with grooved rails having the undercut grooves. The vertical spacing of two second parallel side surfaces of the sliding block corresponds to the width of the undercut groove base. There is a blocking member connected to the sliding block. The dimension a1 or b1 generally being selected with a reduction within the tolerance range compared with the dimensions a or b. The blocking member may have a stop face for a cam rail and in particular the blocking member may have a groove for the positive lateral fixing of a cam rail. An area corresponding to the blocking member can also be constructed in one piece on a cam rail.

Abstract: An assembly is provided which includes a first body with a blind bore with an enlarged countersunk portion. The assembly also has a second body with an aperture aligned with the first body bore. A fastener is provided having a head compressively engages the second body. A shank of the fastener has threaded engagement with the bore, and at least 10% of a free length of the shank is encircled by the countersunk portion of the bore.

Abstract: An apparatus for securing a surgical accessory to a rail of a patient support device includes a clamp and a socket assembly. The clamp includes a first jaw and a second jaw coupled to the first jaw for movement between a first position in which the apparatus is attachable to and detachable from the rail and a second position in which the second jaw cooperates with the first jaw to grip the rail. The second jaw is biased toward the second position. The socket assembly includes a plurality of components movable between a loosened configuration and a tightened configuration. The second jaw is locked in the second position in response to movement of the plurality of components to the tightened configuration.

Abstract: A driven tool includes a driven part which is rotatably driven by a drive part. The driven part and the drive part are coaxially arranged one inside of the other. The drive part and the driven part are conical as viewed in a longitudinal section plane containing the axis. The driven part includes driven teeth projecting generally radially with respect to the axis and received in respective radially-open recesses formed in the drive part. Each of the driven teeth makes contact with a wall of the respective recess at first and second contact places which are respectively situated on opposite sides of a generally radial line of symmetry of the driven tooth. The contact places are operable to transmit a drive force from the drive part to the driven part in respective directions of rotation. A driving angle in the range of −5° to +45° is formed at each contact place.

Abstract: A clamping mechanism connects a tool head including a hollow tool shank with a clamping shank having a seat for receiving the tool shank. Each of the face ends of the clamping elements of the clamping mechanism are overlapped by at least one centering element. The centering elements are connected to each other by axially parallel links forming a centering cage that overlaps the clamping mechanism with axial play. The centering elements each lock into an axially central, cylindrical recess situated in the floor area of the clamping shank and the hollow tool shank.

Abstract: A coupler for connecting first and second shafts has a male cross member pinned to the first shaft and a female body member clamped onto the second shaft. The female body member has a housing with internal splines interlocking with mating external splines on the cross member. A longitudinally split clamp has a sill portion integral with the female body member and a half clamp member engageable with the sill portion. The split clamp has a single locking bolt which reduces the time required for installation. The external splines are relieved at one end to allow the coupler to tolerate some misalignment between the shafts.

Abstract: Device for establishing a gastight and fluidtight connection in a horizontal level between two or more containers (100, 200) of the iso-container type. The device includes a substantially band shaped, elastic sealing member (300) which surrounds an opening (20) between the containers to be connected and which is arranged on a supporting surface (105). A pressure exerting member (130) is provided to hold the sealing member (300) tightly against the supporting surface (105) with tightening members (400) to force the sealing member (300) against the supporting surface (105). The sealing member (300) in mounted position is arranged with a generally rectangular cross section and is placed against a supporting surface (105) on the respective containers, generally extending in the main level of the respective containers. The pressure exerting member constitutes at least four generally band shaped members (130) arranged at the respective flat supporting surfaces (105) of a container (100).

Abstract: An assembly connectable to an operating arm of a machine for performing work functions comprising of an implement having a wall provided with an opening therein and a coupler including apparatus for detachably securing the coupler to the operating arm, apparatus insertable into the implement wall opening to an operative position having a selected angular relationship with the implement relative to a given axis and apparatus for securing the insertable apparatus in the operative position.

Abstract: A switching cabinet has a frame made of stays and with open sides that may be at least partially closed by wall elements that can be secured to the stays of the framework. In order to secure the wall elements to the framework in an manner invisible from the outside, projecting hook elements are fixed on the inner side of the wall elements, matching hook elements can be hooked into the projecting hook elements and the matching hook element can be mounted on the framework stays so that the hook elements may be hooked onto them.

Abstract: The clamping device serves for the releasable connection of two profile pieces, it being possible for an insert core (1) to be introduced and fixed in a first of the profile pieces, in which insert core an axially movable slide (7) bears two pivotable clamping elements (11) each with a clamping hook (13; 14) which can be introduced at least partially into an opening of a second profile piece (15) in order to exert a clamping pressure on that section of the second profile piece (15) which partially closes off the opening. The insert core (1) has eccentric means (5) in order to displace the slide (7) axially. Two oblique surfaces (43) are provided in the insert core (1) in order to displace the clamping element transversely during its axial displacement. In addition to the clamping hook (13; 14), the clamping element (11) comprises a strip-like part with a bent-over strip end designed as hinge hook (34).

Abstract: A flange portion formed on an inner periphery of a flywheel is fitted to an end of a crankshaft. A spline piece is fitted to an inner peripheral surface of the flywheel. The flange portion of the flywheel and a flange portion of the spline piece are commonly fastened to the end of the crankshaft by bolts. An upper end of a driving shaft is spline-fitted at a point into a driving shaft coupled portion of the spline piece which is accommodated in an internal hole in the crankshaft. Thus, in coaxially coupling the flywheel and the driving shaft to the end of the crankshaft, it is possible to make such a coupled area compact and to reduce vibration by an accurate centering thereof.

Abstract: An improved joint construction for commercial metal doors is disclosed which utilizes a novel force transfer block. The force transfer block has spaced-apart flanges which engage corresponding reglets in a door stile. The inner faces of the flanges bear against the inner walls of the reglets. The flanges of the force transfer block are configured such that they will retain the block on the stile by way of an interference fit with the walls of the reglet. Thus the block does not have to be separately fastened to the stile. A rail abuts the stile and has a recessed portion into which the block is received. A threaded rod extends through the rail and into the stile, and tightening a threaded fastener onto each end of the rod clamps the rail securely between two stiles. The recessed portion of the rail has surfaces bearing snugly against at least two sides of the block such that twisting forces applied to the rail are transferred to the block.

Abstract: For mounting the hollow ends (H) of a curved handle (G) in an orifice (B) on a contact face (A), a guide member (30) for a screw (29) has a base flange (31) which can be connected to expanding parts (39, 40, 60, 64) or a securing member (47) and on which there rests a tubular supporting member (12) which overlaps the hollow end (H). A cap nut (20) having a peripheral groove (24) for fixing the hollow end (H) through a setscrew V and wrench faces (33 and 23) like the head (32) can be screwed on to a head (32) of the guide member (30). A shank (37) of the guide member (30) with a conical end (39) or conical nut (64) directed against it can be pulled into an expanding nut (40) or an expanding tube (60) by means of the screw (29), enlarging an expanding basket (42, 62). A door handle (50) can be fixed, for example, on a multi-chamber profile (M), with the securing of a polygonal pin (47), the guide member (30) being secured externally by a flange ring (55).

Abstract: The present invention relates to a T-shaped connection frame for connecting car frames, in which a first member is connected to a second member via a joint member to form a "T." The joint member is formed by symmetrically dividing a rectangular tube between its two latch teeth located at the upper-center and lower-center inner walls. The rectangular tube also has protrusions at the left and right exterior walls. The joint member divided in this way has the latch teeth at the upper and lower tips of the mouth formed by the division and has the protrusion situated opposite the mouth so that the first member can be snapped on easily to this mouth and the second member can be attached to the protrusion at the opposite side. This structural arrangement makes the positioning of the frames very simple, obviates a make-shift attachment, and, at the same time, reduces the number of operation steps.

Abstract: A modular, removable and versatile metal construction includes each of the following: support, transverse and perpendicular profile elements, connection devices, rigid connection pieces, and rigid connection elements. The support profile element has a core with a central opening, and lateral wings having a pair of projections defining an opening therebetween with two channels. The perpendicular profile element is positioned perpendicular to the support and transverse profile elements. The connection device includes a clamp having first and second parts terminating at different levels at an end region of the device, the parts together defining, in sequence, an end, first opposite projections, first opposite indentations, second opposite projections, and second opposite indentations, the end, indentations and projections providing securing engagement at five contact points within a lateral opening.

Abstract: An attachment arrangement for securing components or construction parts to an attachment rail (32) with a slot-like opening (34). The attachment arrangement includes a spring element (27) for improved handling which is deflectable both in the axial and radial directions. An axially elastic region (28) of the spring element (27) provides an axial prestress between a base member (21) and an intermediate member (29) whereby spontaneous detachment of the attachment arrangement by turning the base member (21) through 90 degrees relative to the attachment rail (32) is prevented.

Abstract: A tool handle assembly includes a molded adapter bonded to the end of a handle shaft, which adapter includes a generally cylindrical cap portion and a generally tapered frustoconical portion that surrounds the handle shaft adjacent to the cap portion. The handle assembly is inserted into a lower entrance of a tapered eyehole of a tool head such that the frustoconical portion of the adapter engages a portion of the eyehole. In one preferred form, the cap portion of the adapter includes external barbs. A pair of arcuate wedges having interior teeth are inserted between the cap portion of the adapter and the tool head and bear on the major axis of the tool head. The teeth of the wedge cooperate with the barbs of the adapter to secure the wedges in place. In another preferred form, the adapter includes a pair of slots into which wedge inserts are driven to expand the cap portion of the adapter and thus secure the tool head to the handle assembly.

Abstract: The frame has at least two hollow bars extending at right angles to one another and at least one connector, which connects the two hollow bars to one another at a distance from one another. The connector has a locking body as well as an expanding means in which the locking body engages an undercut groove of one bar with a head part and a front-side hollow space of the other hollow bar with a foot end. The locking body has a clamp-shaped design. The expanding means has an eccentric bolt, which expands the two legs at right angles to their longitudinal direction between the two hollow bars, thereby detachably connecting a head end and a foot end of the locking body to the associated hollow bar by clamping.

Abstract: A clamping device for releasably connecting two profile pieces, wherein the first profile piece has an undercut longitudinal groove and the second profile piece has a box-shaped hollow profile, has a clamping piece inserted into the second profile piece. The clamping piece has a hook-shaped head piece and a hammer head for engaging the longitudinal groove of the first profile piece. The hammer head is connected to a free end face of the head piece. The head piece has an inner sidewall with a slanted surface. The slanted surface extends perpendicular to a longitudinal axis of the clamping piece. The clamping piece includes a flat drawing piece. The head piece and the drawing piece are displaceable relative to one another in the longitudinal direction of the clamping piece. A clamping screw or an eccentric cooperating with the slanted surface is inserted in the drawing piece and is accessible through an opening in the second profile piece.

Abstract: A T-joint comprises a rung having at least one cavity and a lower face. A frame has a first side facing the rung. The frame has a longitudinal groove disposed in the first side and the groove has a floor and a plurality of upper edges, such that there is a gap disposed between the plurality of upper edges and the floor. The frame has at least one T-joint part that extends into the at least one cavity. The at least one T-joint part is fixedly connected to the groove. The lower face of the rung faces the frame and is disposed adjacent to the upper edges of the groove. At least one sealing cushion is disposed in the gap. The at least one sealing cushion is made from an elastic material and is fixedly connected to the frame such that the gap is sealed by the sealing cushion.

Abstract: A concealed fixing device comprises an insert embedded within a first member, an elongate threaded bar connected to the first member and passing through a second member through a concealed hole to a concealed chamber within the second member. A combined nut and washer assembly applied to the threaded bar tightens the first and second members.