Abstract: An adjustable T-square device and method of use is shown and described herein. The adjustable T-square has a plurality of apertures with at least one locking detent to set precise angles. The adjustable T-square has a locking pin to further engage a ruler portion to a head portion to minimize error when using the device.

Abstract: A positioning locking mechanism of a rotational member comprising a rotational positioning member provided with a positioning groove; a rotational member pivotally connected with the rotational positioning member and rotating around the rotational positioning member; a positioning member arranged in the rotational member and movably meshed with the positioning groove; and a locking operation member arranged in the rotational member to control the motion of the positioning member. The positioning locking mechanism can effectively ensure that the positioning and locking of the rotational member cannot be invalid due to accident collision or component fatigue.

Abstract: A positioning locking mechanism of a rotational member having a rotational positioning member provided with a positioning groove; a rotational member pivotally connected with the rotational positioning member and rotating around the rotational positioning member; a positioning member arranged in the rotational member and movably meshed with the positioning groove; and a locking operation member arranged in the rotational member to control the motion of the positioning member.

Abstract: A collapsible structure connection system and method including an apparatus having a pair of mated ferrules or rod segments and a spring-loaded push-button locking mechanism, the spring-loaded push-button locking mechanism having a spring-loaded push-button seated on a dowel of a male ferrule or mail rod segment, and a cavity aperture traversing a dowel cavity of a female ferrule or female rod segment. Each ferrule couples to a rod segment of the structure, the ferrules connecting the rod segments when mated, but allowing the rod segments to disengage into a collapsed structure. An exemplary embodiment of the apparatus and collapsible structure connection system includes a pair of mated ferrules or rod segments, one pivoting pin and at least one slider arm. The slider arm rotates around the pivoting pins, allowing the ferrules or rod segments to rotate into various positions when selectively connecting and collapsing rod segments.

Abstract: An implement coupling device (1) on a working machine (2) comprises a coupling means (11) provided with a first shaft (21); an engagement means (12) provided with a second shaft (22) arranged parallel to the first shaft (21); at least one linkage (13, 14) comprising a first portion (23, 24) connected to the first shaft (21) and second portion (25, 26) connected to the second shaft (22), which first and second portions are connected by a pivot joint (27); and a wedge (28) means arranged to be removably mounted between the first and second portions (23, 24; 25, 26), wherein the coupling means (11) and the engagement means (12) are displaceable relative to each other in a direction at right angles to the first and second shafts (21, 22) to attach or release the implement.

Abstract: A foldable frame construction for mobility aids has a mounting frame, a pivotal arm, and an operating element. The mounting frame has a fixed end, a limiting end, a limiting hole formed through the mounting frame adjacent to the limiting end, and a through hole formed through the mounting frame between the fixed end and the limiting hole. The pivotal arm is rotatably connected to the mounting frame and has a positioning hole formed through the pivotal arm and selectively aligning with the through hole. The operating element is connected to the pivotal arm and the mounting frame to limit a position of the pivotal arm relative to the mounting frame, and has a fixing ring base securely connected to the pivotal arm around the positioning hole, an engaging bolt movably mounted in the fixing ring base, and a pull button connected to the engaging bolt.

Abstract: An adjustment device for exercise apparatuses which comprises a flange, a coupling body coupled to the flange by a pressure bar, an adjustment protrusion and a pressure pin, a coupling ring through which the coupling body is passed, a vertical arm connected to the coupling body so as to be adjusted in the back and forth direction and rotationally, and a coupling arm connected to the vertical arm.

Abstract: A collapsible trivet comprises a first support section, a second support section, and a connecting member, the first support section being mounted to one end of the connecting member by a first axle and the second support section being mounted to the other end of the connecting member by a second axle, the first and second support sections being pivotable relative to the connecting member and the first support section including two support arms.

Abstract: A brace for articulation has a first rod, a second rod, and a joint connecting the two rods. The joint has a pair of circular toothed rings provided with a central hole and arranged overlapping. Each circular ring is fixed to one end of the first rod, which is interposed between them, the second rod being interposed between the circular rings. The joint also has a fixing central pivot, inserted in the central holes of the circular rings and into the through hole of said second rod. The joint further has a first and a second blocking member, each provided with a respective pin, adapted to be inserted in two overlapping throats of the indentation of the circular rings, to limit the movement of the second rod.

Abstract: A control valve (4) for controlling pressure medium flows of a camshaft adjuster, which control valve includes a substantially hollow cylindrical control sleeve (6), which is disposed inside a casing (8), and a control piston (12) which is guided axially displaceably inside the control sleeve (6) against the spring force of a spring element (14), the control sleeve (6) having at one axial end a base (22) which serves as an axial contact surface for the spring element (14).

Abstract: A hand tool includes a body and a ratchet head which is pivotably connected to the body. A pawl and a controller are connected to the body. The ratchet head is engaged with the pawl by first and second engaging teeth. The controller has a recess which has two curved faces. The controller has two grooves and each groove has a first stop face and a second stop face. The first and second stop faces contact the two curved faces. The pawl is not moveable, and the first engaging teeth are engaged with the second engaging teeth so as to fix the ratchet head relative to the body at an angle. When the two curved faces are moved to face the two grooves, the controller is moved, and the ratchet head is pivotable relative to the body.

Abstract: An apparatus includes a base configured to engage a frame stem of a bicycle and first and second handlebar brackets rotatably coupled to the base about a pivot. The first and second handlebar brackets selectively support bicycle handlebars. The apparatus further includes a locking mechanism coupled to the base and selectively rotatably fixing each of the first and second handlebar brackets about the pivot at first and second positions with respect to the base.

Abstract: A pivoting and swiveling floor treatment appliance includes a lock-prevention member that prevents a body from becoming pivotally locked in a forward/backward direction when a portion of the body is in a swiveled position. The lock-prevention member may move relative to an appliance head and to a portion of the body that swivels. In some embodiments, components of the lock-prevention member contribute to locking the swivel of the body when the body is pivotally locked.

Abstract: A folding device is configured at the pivot between the rear leg frame and the front leg frame of a high chair and allows a user to complete folding process by pressing a driving member. When the driving member is pressed, an engaging member of the folding device moves correspondingly to an unlocked position, so that the rear leg frame disengages from and pivots about the front leg frame. The high chair can then be folded easily for the user, and the structure of the invention is simpler than the prior art.

Abstract: An adjustable holding apparatus for an endoscope or other medical device having a proximal end and a distal end, the adjustable holding apparatus having a device for holding an endoscope or other medical device that includes a number of arm segments between the proximal end and the distal end, a number of lockable joints that each connect two of the number of arm segments with one another in jointed fashion, and a compensation device for at least partial compensation of the weight impact of the holding apparatus in a pivoting or sliding of at least one arm segment in the vertical direction.

Abstract: A stroller includes a handle switchable between a front inclined position and a rear inclined position, an article holding accessory, and at least one adjusting mechanism. The adjusting mechanism includes a sleeve component secured to the handle, an axle ring component connected to the article holding accessory and coupled rotatably to the sleeve component, and a positioning plate. The axle ring component has first and second engaging parts corresponding to the front and rear inclined positions, respectively. The positioning plate is coaxially secured in the sleeve component and has a positioning part engageable with a selected one of the first and second engaging parts with respect to an axis of rotation of the axle ring component, so as to provide a substantially horizontal position of use for the article holding accessory when the handle is at either one of the front and rear inclined positions.

Abstract: An adjustable tree stand frame has a housing attached to a tree with a spindle rotatably disposed within the housing. One or more spring loaded pins are removably receivable within openings on an outer periphery of the spindle such that when so received within an opening, spindle rotation is prevented. A frame is pivotally attached to the spindle and uses a threaded shaft and a receiver to pivot the frame back and forth with respect to the spindle.

Abstract: A table leg assembly includes an upright leg and two branch legs. The upright leg has two tubes longitudinally extended therefrom. Each tube has a joint member disposed in a lower end thereof. Each branch leg has a cylinder formed at one end thereof. The cylinder is coaxially aligned with the respective tube. The cylinder of the respective branch leg has a ring disposed on a top thereof. The ring has a plurality of positioning grooves defined in an inner periphery thereof. At least one positioning pin passing through the joint member and positioned in one of the positioning grooves of the respective ring so as to restrict the respective branch leg in a certain angle.

Abstract: A ratcheting tool including a handle formed with an integral yoke at a first end and a tool head coupled to the yoke at a pivot. The tool head has a toothed hub facing rearwardly of the pivot and into the yoke. A locking spool is rotatably carried in the yoke adjacent the toothed hub. The locking spool has a first face, a second face, and a first tooth extending along both the first face and the second face and engaging the toothed hub. The locking spool is rotatable between a first position in which the first face is adjacent the toothed hub, thereby locking the tool head in a selected angular position with respect to the handle, and a second position in which the second face is adjacent the toothed hub such that the tool head is pivotable about the pivot.

Abstract: An adjustable connector for elongated members is provided having a mount attached to a first elongated member, such as a chair support, and a tubular arm assembly pivotally connected to the mount and attached to a second elongated member, such as an umbrella or flag. The arm assembly is selectively positioned in relation to the mount by adjusting pegs that extend from the arm assembly and engage receivers in the mount. A tubular cam within the arm assembly is connected to a tubular sleeve on the exterior of the arm assembly. The sleeve is slid toward the mount causing the cam to disengage the pegs from the mount receivers permitting repositioning of the arm assembly from a position adjacent to the mount, through perpendicular to a position parallel to the mount. The connector may be collapsed and remain connected to the elongated members when not in use.

Abstract: A ratcheting tool including a handle formed with an integral yoke at a first end and a tool head coupled to the yoke at a pivot. The tool head has a toothed hub facing rearwardly of the pivot and into the yoke. A locking spool is rotatably carried in the yoke adjacent the toothed hub. The locking spool has a first face, a second face, and a first tooth extending along both the first face and the second face and engaging the toothed hub. The locking spool is rotatable between a first position in which the first face is adjacent the toothed hub, thereby locking the tool head in a selected angular position with respect to the handle, and a second position in which the second face is adjacent the toothed hub such that the tool head is pivotable about the pivot.

Abstract: A broom comprises a head supporting bristles. A handle is connected to the head at a swivel joint where the swivel joint allows the handle to feely rotate relative to the head. A lock is movable to a locked position to fix the position of the handle relative to the head when the head is in a first position relative to the handle and an unlocked position where the head is free to rotate relative to the handle. A method of operating a broom comprises providing a head supporting bristles connected to a handle at a lockable swivel joint; locking the lockable swivel joint to fix the position of the handle relative to the head in a first position; and unlocking the lockable swivel joint to allow the handle to rotate relative to the head.

Abstract: A folding device is configured at the pivot between the rear leg frame and the front leg frame of a high chair and allows a user to complete folding process by pressing a driving member. When the driving member is pressed, an engaging member of the folding device moves correspondingly to an unlocked position, so that the rear leg frame disengages from and pivots about the front leg frame. The high chair can then be folded easily for the user, and the structure of the invention is simpler than the prior art.

Abstract: An accessory support device for a stroller apparatus comprises a coupling fixture securely mounted on a handle of a stroller and including a plurality of latching openings, a rotary socket pivotally assembled with the coupling fixture and including a detent and a connecting portion, and an accessory support frame detachably fastened with the connecting portion of the rotary socket. The accessory support frame is operable to rotate with the rotary socket relative to the coupling fixture, and the detent is movable to engage with any one of the latching openings for locking the accessory support frame at different angular positions relative to the coupling fixture.

Abstract: A paint brush has a handle and a paint brush head. The paint brush head is detachable from the paint brush handle. The paint brush head may be rotatable to a number of positions relative to the paint brush handle.

Abstract: A hinge assembly includes a pivot shaft, a first supporting member, a second supporting member, and a positioning member. The first supporting member is rotatably sleeved on the pivot shaft. A positioning protrusion is formed on the first supporting member. The second supporting member is non-rotatably sleeved on the pivot shaft. The positioning member has an elastic portion and is non-rotatably sleeved on the pivot shaft. A positioning groove receiving the positioning protrusion is defined in a periphery of the positioning member and adjacent to the elastic portion. An LCD device is further provided in the present disclose.

Abstract: An angle-adjustable hinge provided with a first member provided with a case portion holding an approximately disc-shaped gear member having a non-circular through hole as to freely rotate, a second member having a fitting shaft portion detachably inserted to the through hole of the gear member, a wedge-shaped window portion formed on the case portion, and a floating wedge member, movably disposed within the wedge-shaped window portion, in which one side face is a toothed face to engage with the gear member and another side is a contact face to contact a wedge face of the wedge-shaped window portion, to restrict the gear member from oscillation in one direction against the case portion by the engagement of the toothed face with the gear member and the contact of the contact face and the wedge face.

Abstract: A ladder includes a first section having at least one step. The ladder includes a second section having a least one step. The ladder includes a platform attached to the first and second sections. The ladder includes a hinge mechanism connected to the first section and second section, about which the first section and second section move between an open state, where the first and second sections are in an angular relationship for use, and a folded state where the first and second sections and the platform are essentially in parallel, as shown in FIGS. 4 and 5. The ladder includes a foldable tray mechanism attached to the hinge mechanism about which the foldable tray mechanism moves between the open state independently of the first and second sections, where the foldable tray is in an angular relationship with the first and second sections for use, and a folded state where the foldable tray essentially forms a plane with the first section. A hinge for a stepladder. A step to a ladder.

Abstract: A joint assembly on a front frame tube of a baby stroller is revealed. The front frame tube includes an upper tube part and a lower tube part while the joint assembly consists of a first part, a second part and a connection part. The first part and the second part are respectively sleeved and connected with the upper tube part and the lower tube part while the other end of the first part and of the second part is connected with the connection part. Moreover, a leaning support surface for leaning against the first and the second parts is formed in a slot of the connection part. Thus the upper and the lower tube parts are stopped by the leaning support surfaces when being extended while the first part and the second part are also supported. Therefore, the front frame tube is maintained and fixed in an extended state.

Abstract: A ratcheting tool including a handle formed with an integral yoke at a first end and a tool head coupled to the yoke at a pivot. The tool head has a toothed hub facing rearwardly of the pivot and into the yoke. A locking spool is rotatably carried in the yoke adjacent the toothed hub. The locking spool has a first face, a second face, and a first tooth extending along both the first face and the second face and engaging the toothed hub. The locking spool is rotatable between a first position in which the first face is adjacent the toothed hub, thereby locking the tool head in a selected angular position with respect to the handle, and a second position in which the second face is adjacent the toothed hub such that the tool head is pivotable about the pivot.

Abstract: A structural support for supporting equipment on a rooftop, which is connected to a frame and to equipment to be supported, comprises a mechanism connecting a base cap and a base connector of the structural support. One of the base cap and the base connector includes at least one plate and the other of the base cap and the base connector includes a pair of plates that receives the at least one plate allowing for pivoting adjustments of the base connector about the base cap when the at least one plate is received within an opening between the pair of plates to achieve desired positioning of the base connector. In one example, a pair of base cap plates is received by a pair of inwardly biased base connector plates. Once a desired position is achieved, a fastening assembly secures the position of the base connector. The structural mounting may also include, for example, a base support, a base flashing, and a rubber base gasket.

Abstract: The present invention relates to an arrangement and to a method relating to a swing damper (1) for carrying a tool (5) that hands from a crane arm (2) or the like. The swing damper (1) includes an upper part (11) that is connected to the crane arm (2), and a lower part (12) that carries a working implement (5) or the like either directly or via a rotator (4), for instance. The upper part (11) and the lower part (12) are pivotally connected to one another via a pivot joint (13). The swing damper (1) also includes a brake arrangement (50). The brake arrangement (50) includes a brake unit (60) that has discs (70, 80) which are pivotal about the pivot shaft (14) of the swing joint (13), wherein at least one (70) of said discs is secured against rotation relative to the upper part (11), and wherein at least (80) of said discs is secured against rotation relative to said lower part (12).

Abstract: A stand including a column that is mounted on a base section and that has at least one profiled element. A head unit which includes a pivoting element that can be tilted about a horizontal pivoting axis and can be clamped in a desired tilted position is fixed to the upper end section of the column and an upper face of the pivoting element has a receiving element. This invention provides a stable inclined position by a simple manipulation. To achieve this, the head unit includes a bolt which extends into a longitudinal cavity of the profiled element and is fixed relative to the upper end section and in which the pivoting element is mounted.

Abstract: The invention relates to a swivelable roll bar, in particular for construction vehicles, with two vertical carriers, each of which has a pair of spars, whereby in each, one spar is connected swivelably through a link joint with the another spar, and the link joint comprises a lock and a stop. The stop consists of a joint stiffener, which is built as an extension of one spar and partially grips about the end of the other. In addition to that, the lock has a continuously adjustable final control element, with which the joint stiffener can be braced against the other spar. With the grip about the other spar, the flexural strength of the link joint of the swivelable roll bar is increased. Further, the bracing of the joint stiffener against the other spar eliminates the play in the link joint. The joint stiffener is preferably built as a U-shaped tubular segment that is attached to the latter as an extension of the spar.

Abstract: An exemplary rotatable joint (100) includes a socket (10), a rotatable arm (20), and a connecting device (30) configured for being mounted in the socket. The connecting device includes a sub-socket (31), two elastic sleeves (33), and two pivot shafts (35) fixed to the socket. The sub-socket includes a first half (311) and a second half (312). A pivot hole (315, 316) is defined in each of the first half and the second half for engaging with an outer surface (331) of one of the elastic sleeves. An outer surface (351) of each of the pivot shafts engages with an inner surface (332) of one of the elastic sleeves. A through hole (317) is defined in the sub-socket for rotatably engaging with the rotatable arm. Each of the elastic sleeves abuts the rotatable arm.

Abstract: Device for locking the articulated joint in the longitudinal direction between the plate of a dust mop and the handle, which permits deactivation and subsequent reactivation of the locking of the articulated joint between the handle and the plate in a longitudinal direction, carried out by the user with his feet instead of his hands.

Abstract: A hanger for a ceiling fan is formed with a conical receiving opening contracted downward gradually and having a hard hanging spherical member received therein. The hanging spherical member has its outer circumference annularly provided with a stop ring whose diameter is larger than the inner diameter of the receiving opening. A shock-absorbing cover is covered around the outer circumference under the stop ring of the hanging spherical member, having its inner circumferential camber matching with the outer circumferential camber of the hanging spherical member to enable the shock-absorbing cover to stably cover the hanging spherical member, and its outer circumference completely touching the inner edge of the receiving opening, avoiding the hanging spherical member dropping downward, preventing noises from produced and effectively elevating stability of the hanger.

Abstract: A knuckle joint locking and release mechanism for a power tool having a locking mode where relative articulation between two body portions of the power tool is prevented and a release mode where relative articulation between the two body portions of the power tool is unhindered. The knuckle joint locking and release mechanism is biased into the locking mode but can be placed into the release mode by engaging an actuator pushbutton located on either side of the knuckle joint.

Abstract: A fitting (5) for a vehicle seat, in particular a motor vehicle seat, comprises a first fitting part (7); a second fitting part (8) that can be rotated about an axis (A) relative to the first fitting part (7); a drivable eccentric (11; 111) that is mounted for rotating about the axis (A); and at least two locking elements (13) that are guided in the radial direction with respect to the axis (A) by the first fitting part (7), can be moved radially outward under the action of the eccentric (11; 111), and interact radially outward with the second fitting part (8) in order to lock the fitting (5). When the fitting (5) is in the locked state, at least one locking element (13) tilts in the counter direction in relation to the adjacent locking device (13).

Abstract: A light fixture assembly with a mounting element for attaching a light fixture accessory to a stem of the light fixture assembly, the light fixture accessory detachably connectable to the mounting element, the light fixture assembly also having an interface for attaching various light fixture accessories to the bracket.

Abstract: A hanger assembly includes a hanger bracket and an adapter formed with a head and a down rod connector. The head has a lower face seated in a socket formed in the hanger bracket and an opposing upper face, and a first axis perpendicular to the upper face. The down rod connector depends downwardly from the lower face thereof to a free end adapted to be secured to a down rod, and includes a front face facing a front end of the socket, an opposing rear face facing a rear end of the socket, and a second axis extending longitudinally thereof. There is a salient angle of less than 180 degrees between the first axis and the second axis facing the front end of the socket, and the front end of the socket is received in a notch formed in the front face of the down rod connector.

Abstract: A hinge for circumrotatory location includes a base, a locating gasket defining a pair of recesses thereon, a top cover defining a third groove in a bottom thereof. The base has a first groove, a second groove above the first groove. A retention slot connects the second groove and has two retention edges. A stop block is rotatably mounted in the retention slot and stretches into the second groove. The retention edges are capable of stopping the stop block. A pair of locating slots corresponding to the recesses are centrosymmetrically defined in the fundus of the third groove. A protrusion protrudes from the bottom of the top cover and adjacent to the third groove. The top cover lies above the locating gasket which is fitted to the first groove. The protrusion rotates around the second groove and is capable of being against two sides of the stop block.

Abstract: A rotational supporting mechanism, which supports a main body and a cover, includes an eccentric cam. The main body and the cover are superposed in a closed position. From the closed position, the cover is rotated 180 degrees and stopped at a 180-degree rotational position in an open position. The eccentric cam rotates eccentrically. The pressing means presses a cam surface of the eccentric cam in a direction of a line connecting a portion of the eccentric cam corresponding to the closed position and a portion of the eccentric cam corresponding to the open position when the main body and the cover are superposed in the closed position. Rotation of the cam is stopped in the open position and the closed position.

Abstract: An articulated-arm arrangement for plumbing fixtures, for example, a shower head, contains a mounting fixture that may be fastened to a wall. A pivot joint for a wall-mounting arm that may be pivoted about a horizontal axis is accommodated within the mounting fixture. The pivot joint contains a brake for locking the wall-mounting arm in place and a slip-clutch in order to allow pivoting the wall-mounting arm upwards, against the action of its own weight, without releasing the brake from its braking setting.

Abstract: A locking positioning mechanism includes a first element and a second element, the first element and second element rotatable relative to one another about a common rotational axis between a locked orientation and an unlocked orientation and axially translatable relative to one another. The mechanism further includes one or more first locking surfaces of the first element and one or more second locking surfaces of the second element. The second locking surfaces are configured to clear the first locking surfaces in the unlocked orientation. The second locking surface is configured for an interference fit with a first locking surface in the locked orientation.

Abstract: A pivoting assembly of a hand tool comprising a tool body, the tool body including a driving portion, a handle and a pivotal portion; the pivotal portion having a first pivoted end and a second pivoted end; the first pivoted end being installed to one of the handle and driving portion; and the second pivoted end being installed to the other one of the handle and driving portion so that an angle between the handle and driving portion is adjustable. The first pivoted end is formed with a buckling hole; a tooth portion is formed in the buckling hole; the second pivoted end is formed with a post; the post is axially moveable with respect to the tooth portion of the buckling hole; and a bottom of the post is formed with teeth with respect to the tooth portion of the buckling hole.

Abstract: The tilt mechanism has a pair of tubular members and a catch which is fixedly mounted in the upper member and pivotally mounted in the lower member to permit tilting of the two members relative to each other. A pin is mounted in the lower member and is biased into one of several recesses in the lower end of the catch in order to hold the sections in either an upright or a tilted position relative to each other. A coil spring is used to bias the pin into a recess of the catch. Pulling down on the pin allows the tubular members to be tilted relative to each other.

Abstract: An articulated joint for a foldable ladder includes an outer casing pair, an inner casing pair pivotally moving with respect to the outer casing pair, a lock device composed of a lock block and a locating pin. The locating pin has a ball end to be slightly squeezed in the locating hole such that the ball end is capable of retained in the locating hole and pivotally joined to the locating hole. The lock block provides triangular prism shaped projections at two opposite long edges of the bottom side of the lock block. Hence, the lock block can move along the guide slot of the outer casing shells steadily and be pivotally joined to fixing pin without loosening apart from each other.

Abstract: A ratcheting tool including a handle formed with an integral yoke at a first end and a tool head coupled to the yoke at a pivot. The tool head has a toothed hub facing rearwardly of the pivot and into the yoke. A locking spool is rotatably carried in the yoke adjacent the toothed hub. The locking spool has a first face, a second face, and a first tooth extending along both the first face and the second face and engaging the toothed hub. The locking spool is rotatable between a first position in which the first face is adjacent the toothed hub, thereby locking the tool head in a selected angular position with respect to the handle, and a second position in which the second face is adjacent the toothed hub such that the tool head is pivotable about the pivot.

Abstract: A rotating bracket device made by assembling two components 101 “(101)” and 201 “(101)” for connecting and supporting structural framing members. A rotating bracket device that is comprised of two or more components which are capable of rotating about an axis to connect and support structural framing members having the same or different angle relationships. A rotating bracket device which can be but is not limited to use in the construction of roof systems, connecting walls to trusses, connecting walls to joists, and walls to rafters. The rotating bracket is preferably constructed of two pieces of metal 101 and 201, each of which has two portions that are bent at right angles to a connecting surface of each to form a stirrup, U-shape, or flange forming opposed flanges which are parallel to each other and perpendicular to the connecting surface. One of the components of the rotating bracket has flanges which are bent closer to each other than the flanges of the other component.