Abstract: A friction wheel includes a hub, two bearings mounted in the hub and each having an axle, and a friction member mounted between the hub and the axle of each of the two bearings. Thus, the friction member is mounted between the hub and the axle of each of the two bearings to increase the friction between the hub and the axle of each of the two bearings so that the user has to apply a larger force to overcome the friction between the hub and the axle of each of the two bearings so as to move the cart forward, thereby preventing the cart from being moved freely.

Abstract: A caster has a ring-shaped main body, two ring-shaped wheels provided on both side end parts of the main body and two ring-shaped holders by which the two ring-shaped wheels are rotatably fitted on the main body. Each of the wheels has a first sliding face on an inner side of an inner circumferential part and a second sliding face on an outer side thereof. A first dry bearing is provided between an outer circumferential face of a ring-shaped flange provided on each of the both side end parts of the main body and the first sliding face, a second dry bearing is provided between an outer circumferential face of a ring-shaped flange provided on an outer end part of each of the holders and the second sliding face. The caster provides a high mechanical stability, durability, impact resistance and heat resistance.

Abstract: A liquid cooled wheel system includes a wheel, an axle bolt arranged in mechanical and supportive communication with the wheel, the axle bolt defining an internal chamber configured to hold and transmit a working fluid, a pump arranged in fluid communication with the axle bolt through the working fluid and arranged in mechanical communication with the wheel such that rotational movement of the wheel is translated into internal pumping movement of the pump, and a heat exchanger in fluid communication with both of the axle bolt and the pump and configured to exchange heat from the working fluid to an external environment.

Abstract: A compressible wheel tip for a walking aid that restricts rolling when a force is applied down on the walking aid. The tip may have a compressible wheel configured to deform under an applied pressure and thereby restrict shifting or rolling of the wheel. The compressible wheel may include rigid spokes and a compressible material forming an arcuate perimeter between the spokes to define a wheel shape. The compressible material may be a resilient elastomeric material adapted to deform under an applied force and return to its original shape when the force is no longer applied. The spokes may be formed of plastic or metal, or formed of the same material as the spokes and structured to better resist deformation.

Abstract: A castor assembly includes a support unit, a frame unit, a brake unit, and an operation unit. The frame unit includes a frame, a locating flange, and a wheel. The support unit includes a bearing, and an inner bushing. The brake unit includes a control shaft, a braking block, a lower toothed disk, an upper toothed disk, a locking block, and an elastic member. The operation unit includes a housing, a drive seat, a pressing roll, a cam block, and a restoring member. Thus, when the braking block presses the wheel to stop movement of the wheel, the upper toothed disk meshes with the lower toothed disk to lock the lower toothed disk and the braking block so that the wheel is locked and cannot be turned freely when the wheel is braked.

Abstract: A castor includes an inner frame, an outer frame surrounding the inner frame, a plurality of buffering members mounted between the inner frame and the outer frame, a plurality of connecting ribs each connected between the outer frame and a respective one of the buffering members, and a plurality of connecting flanges each connected between the inner frame and a respective one of the buffering members. Thus, the buffering members are mounted between the inner frame and the outer frame and are compressed and deformed elastically to provide a shock absorbing and buffering effect to the castor when the castor is subjected to an external force or impact so as to reduce the vibration and pressure of the castor, thereby providing a comfortable sensation to a user when moving the castor.

Abstract: The present invention concerns a felt covered castor put under a piece of furniture to make it roll on a floor. The castor comprises one or more wheels on which are fixed felt strips rolled up along the wheels. The use of the felt strip allows to brush slightly a surface of the floor and to protect it from scratches occurring at the passage of a naked wheel on the floor. And also it deafens the noise of the sliding wheel against the floor. Means of binding such as fusion or sticking are used to maintain firmly the felt strip on the wheel and to prevent it from getting loose.

Abstract: The invention comprises a caster having a yoke having a weight transferring tab and a wheel being rotatably attached to the yoke. The wheel has a groove for receiving the weight transferring tab. The tab transfers the weight of a load applied to the yoke to the groove. The caster includes various accessories, such as various stem, wheel, brake, and axle/hub configurations.

Abstract: A camera dolly comprises a base and a plurality of legs extending radially outward from an inner end pivotally coupled on the base to an outer end supporting a wheel assembly thereon such that the wheel assemblies are arranged for rolling movement along a pair of rail members extending in a longitudinal direction. Each wheel assembly comprises a plurality of wheels spaced apart from one another in the longitudinal direction in two rows arranged to receive the respective rail member therebetween. Each wheel assembly is pivotal about an upright axis and a horizontal axis relative to the respective leg. A horizontal deck plate includes plural sets of mounting apertures therein corresponding to different relatively fixed relationships of the legs. A socket formed centrally in the base threadably receives an upright post therein which support the camera thereon spaced above the base.

Abstract: The invention consists of a caster comprises a yoke having a weight transferring tab and a wheel with groove for receiving the tab. Preferably, the yoke and wheel are made out of plastic, and in some embodiments two different types of plastic. A tab and groove helps transfer the weight of the load on the castor away from the arms of the yoke and onto the wheel. In a preferred embodiment the plastic wheel is molded so as to include a shaft on either side that snap into receiving holes in the yoke, thus avoiding the need for separate axel and rivets.

Abstract: A zero-turn mower comprising a zero-turn mower frame, a front axle coupled to the zero-turn mower frame, first and second caster wheel assemblies, and first and second front shock assemblies. The front shock assemblies rotatably and telescopically couple the caster wheel assemblies to the front axle, thereby providing vertical shock absorption. The front axle may be a floating axle that is pivotably coupled to the mower frame and/or the shock assemblies may define an internal spring-receiving chamber that is substantially isolated from the external environment. Such a zero-turn mower may provide a smoother ride and may require less maintenance and repair than conventional zero-turn mowers.

Abstract: This is a replacement wheel for a medical walker. This replacement wheel is 9 inches in diameter. The wheel itself is made of durable plastic and is surrounded with rubber. The wheel is steel bolted to an aluminum shaft with a protective plastic cap at its bottom. The shaft of the replacement wheel has 7 positioning holes. To use the replacement wheel simply remove old wheels from walker and adjustable shaft for most manufactured medical walkers and the new replacement wheel fits securely into the shaft. The positioning holes can be adjusted to the correct height needed.

Abstract: A caster assembly is provided which may include an attachment means for attaching the caster assembly to a base of an object, a caster yoke, and a cam assembly operable in at least three states. The caster yoke is operable to swivel relative to the attachment means. The cam assembly may include an actuating means for operating the cam assembly, a swivel lever mechanism and a brake lever mechanism in communication with a cam. When in a first state, the wheel rotates freely and the caster yoke swivels freely. When in a second state, a first swivel brake is engaged by the swivel lever mechanism to lock the caster yoke in a predetermined orientation while the wheel is allowed to rotate freely. When in a third state, a wheel brake is engaged by the brake lever mechanism to stop the wheel from rotating freely and a second swivel brake is simultaneously engaged to stop the caster yoke from swivelling.

Abstract: The present invention relates to a wheel assembly with a single fixing arm capable of being disposed on a luggage, the wheel assembly comprises: an assembly body, a wheel frame, a first pad, a circular plate, a ring pad, an assembly shaft, an auxiliary wheel, a bearing mechanism, and a wheel, wherein the assembly shaft being punched through assembly body, the wheel frame, the first pad, the circular plate, and the ring pad, so as to combine the assembly body and the wheel frame. The auxiliary wheel is adapted to maintain the stability of the wheel when the wheel is on a rotating state; moreover, the wheel can stop rotating when applying a force to the auxiliary wheel.

Abstract: A plurality of castors for a piece of furniture, each castor including a casing, two wheels, and fastener elements for fastening to the piece of furniture. The casing is made up of two units, each made as a single piece, the first unit including a portion constituted by a portion of the wheel casing and a portion constituted by a portion of the swivel casing, the second unit including a portion constituted by another portion of the wheel casing and a portion constituted by another portion of the swivel casing. The two units are adapted to be associated with each other to form the casing in such a manner that the portions of the first unit and the portions of the second unit engage respectively one in the other, and elements are provided for securing the two units together.

Abstract: A caster for being mounted to a bottom of a device includes a support, a connecting member, and a wheel mounted to the connecting member. The support defines a receiving space. The connecting member is threadedly connected to the support, and comprises a bracket accommodated in the receiving space. The wheel is rotatably mounted to the bracket. The support and the connecting member are operable to rotate relative to each other, with the wheel moving to expose out of or retract inside the receiving space.

Abstract: A removable wheel device which slides onto the base of a sports field goal. The wheel device allows one person to move a goal across a field without using excessive force by sliding one wheel device onto the base of each goalpost and using leverage to tilt the goal and push or pull it for a distance. When inserted onto the base of the goal, the wheel device does not require any type of fastening to remain in place, but rather uses its own unique shape to hold onto the goal. In one embodiment the removable wheel device comprises a wheel, a bracket, and a U-shaped sleeve which may slide onto the base of a lacrosse goalpost.

Abstract: A caster of an endless structure is provided which is almost jam-proof even in the case of a bigger gap. The caster includes a first wheel supported on a mounting leg, a second wheel supported by an axle on one end of a suspension arm of which the other end is supported by an axle which also supports the first wheel, and a wrap-around member which is wrapped around the first and second wheels. The wraparound member is formed an endless belt form by connecting independent pieces to each other. The outer peripheral section of each piece is provided with a wider section and when the wraparound member is depressed and warps, the wider section is adapted to touch a wider section of the adjacent piece, thereby preventing further depression.

Abstract: In various embodiments, a caster assembly may include a wheel rotatably coupled to a caster housing and a deflector tab pivotably coupled to the caster housing and offset from an outer wheel circumference for use in moving or traversing obstacles encountered during wheel movement. In some embodiments, the deflector tab may include at least one retaining element configured to hold the deflector tab in a pusher position or allow movement of the deflector tab into a ramp position. In the pusher position, the deflector tab may push a mobile obstacle in front of the wheel motion. In the ramp position, the deflector tab may facilitate moving the wheels over a fixed obstacle.

Abstract: A caster for moving a thing is disclosed. The caster comprises a first rotary shaft which is installed at a plate on which a thing to be moved is positioned; a rotation body of which one portion is rotatably engaged to the first rotary shaft; a frame of which an upper side is rotatably connected to the other portion of the rotation body; and a wheel which is rotatably installed at a lower side of the frame.

Abstract: The invention provides a wheeling device for a packaged article which may be directly attached to the packaging of the article and which comprises wheeling means. The invention also provides a wheelable package for an article comprising at least one wheeling device according to the present invention, the wheeling device being directly attached to the package. The invention further provides a method of improving the handlability of a packaged article comprising directly attaching to the packaging of the article one or more wheeling devices of the invention.

Abstract: A mono-fork assembly for a front wheel of a wheelchair. The assembly includes a mono-fork member, an axle, and a retaining member. The mono-fork member has a single tine with a threaded aperture formed therein. The front wheel is rotatable on the axle. The axle has a distal end and a threaded proximal end. The proximal end is configured to be threaded into the threaded aperture of the tine and may be permanently bonded therein. A retaining member is coupled to the distal end of the axle to retain the front wheel on the distal end as the front wheel rotates about the axle. The mono-fork member may include a collar portion aligned along a steering axis for rotation thereabout. The mono-fork assembly may include a bumper configured to extend circumferentially about the collar portion within a circumferential groove formed in the collar portion.

Abstract: A castor wheel construction for furniture pieces and the like comprises a hub including an annular supporting element supporting a cylinder having two end portions thereon two wheels are respectively mounted, one for each cylinder portion, the annular supporting element also including a vertical attachment portion for receiving a peg element integral with the furniture pieces, to allow the castor wheel construction to turn about a vertical axis, each wheel comprising a cylindric portion operating as a tread, coupled to a flange portion, the wheels being fixedly coupled to the cylindric portion.

Abstract: A castor wheel for a vehicle or an attachment for a vehicle, the castor wheel comprising; a wheel having an axle about which the wheel can rotate, an offset pivot mounting for mounting the castor wheel to the vehicle or vehicle attachment, the pivot mounting being connected to the wheel axle and defining a pivot axis perpendicular to and offset from the wheel axle, the wheel capable of pivoting about the pivot axis, and wherein the castor wheel also comprises a restrainer for restraining the pivoting of the wheel is disclosed.

Abstract: Caster alignment mechanism having a first component operably connected to a leg of a mobile device and a second component operably connected to a caster of the mobile device. The first and second components are positioned in parallel orientation to each other wherein alignment. of the caster with the leg of the mobile device is achieved by the attractive characteristics of the first component with an upper magnet to the second component with a lower magnet. One embodiment of the caster alignment mechanism includes a fixed gap between the upper magnet and the lower magnet for an always engaged or “on” mode. The fixed gap can be adjusted to vary magnetic field strength depending on user specifications for ease of turning. Another embodiment of the caster alignment mechanism includes a switching mechanism to change modes between engaged or “on” mode and disengaged or “off” mode.

Abstract: A walker has a wheel rotatably mounted to the lower end of each of a pair of front legs, each wheel having a series of end to end smaller diameter rollers mounted about the axis of wheels 10 define an outer perimeter of said wheels to allow easier turning of the walker without applying a lift force to the front legs while maintaining a tendency for the walker to track in a forward direction when a turning force is not applied.

Abstract: A caster includes a housing, a rotating member, and a caster. The housing defines an accommodation space having an open bottom end. The rotating member is disposed within the housing, and is rotatable between first and second angular positions. The caster is co-rotatable with the rotating member. One of the housing and the rotating member has first and second engaging portions. The other one of the housing and the rotating member has a third engaging portion, which engages the first engaging portion so that the caster is unfolded and disposed outwardly of the housing when the rotating member is at the first angular position and which engages the second engaging portion so that the caster is folded and disposed at a folded position and within the accommodation space when the rotating member is at the second angular position.

Abstract: A brake-equipped swivel caster including a tired wheel rotatably fitted to a support leg comprises a movable pin allowed to move up and down inside the vertical axial member and normally retained by an elastic member in its uppermost position, left and right brake arms in a pair swingably fitted to the support leg and normally retained by elastic members such that their lower ends are a specified distance apart from the lateral wheel surfaces of the tired wheel, and an operation mechanism arranged over the movable pin. When the operation mechanism pushes down the movable pin a specified distance, a tapered lower end portion of the movable pin causes the brake arms to turn by pushing outward on the upper ends of the brake arms, so that the lower ends of the brake arms are pressed against the lateral wheel surfaces of the tired wheel.

Abstract: A caster assembly includes a swivel assembly having a pivot axis, a housing which is connected to the swivel assembly, and a wheel which is slidably supported for linear movement along the longitudinal axis of the housing. The wheel is slidable along the longitudinal axis to move the rotational axis of the wheel from one side of the pivot axis to the other.

Abstract: A brake-equipped swivel caster comprises a movable pin allowed to move up and down and normally retained in its uppermost position by an elastic member, and a bifurcated brake member including two downward-extending brake pieces, arranged with its top adjacent to the lower end of the movable pin and rotatably suspended by a horizontal shaft fitted to a tired-wheel support leg at a position off the axis of the movable pin. The brake member is subjected to the force of an elastic member tending to cause the brake member to turn in a direction away from the opposite lateral rim edges of a tired wheel, and is thereby retained in a non-braking condition. When the movable pin pushed down a specified distance pushes on the top of the brake member, the brake member turns so that the two brake pieces are pressed against the opposite lateral rim edges.

Abstract: A truckle includes a swiveling shaft, a rack, a driving unit received in the swivel shaft, and an arresting unit assembled with the driving unit. The swiveling shaft defines a through hole near an end thereof, and has a bearing on another end thereof. The rack has an end connecting with the bearing. The driving unit includes a rotating member corresponding to the through hole, a push member corresponding to a peripheral of the rotating member. The arresting unit includes an axis pole extending into the sleeve for assembling with the push member, a gear disc mounted on the axis pole for corresponding to the latch portion, and an arresting block mounted below the gear disc and corresponding to the wheel. The truckle either limits direction solely or limits direction and rotation simultaneously. The truckle has firm structure and can be arrested reliably.

Abstract: The present invention discloses a swivelable trunk wheel assembly, which comprises: a wheel frame, a guide hole, a hollow pivotal shaft, a push rod, a press block, a sleeve pipe, two wheels and two rivets. The sleeve pipe adopts a metallic pipe having a better rigidity, and the inner surface of the sleeve pipe is a smooth surface. Further, the rivets and the sleeve pipe are arranged in the same axis. Thus, the wheels can rotate smoothly without stagnancy. Therefore, the swivelable trunk wheel assembly of the present invention has a better wear resistance and a longer service life. Besides, the present invention uses the push rod to drive the press block to rub the friction portion, and the friction can provide a braking effect on the wheels.

Abstract: A combine having an integral crop residue round baler includes an operator's cab, an engine, a grain harvesting assembly, a grain transfer assembly, a grain bin, and a grain off-loading assembly. The towed crop residue round baler is located at the rear of the combine and moves integrally therewith for forming a crop residue bale. The towed crop residue round baler can be connected to the combine by a pair of widely spaced apart joint assemblies that permit the towed crop residue round baler to move only in the pitch axis. A tractor assembly for baling crop material, is fitted with a quick hitch assembly for towing a towed crop residue round baler connected to the tractor by said quick hitch assembly configured such that only movement in the pitch axis is permitted and such that tractor carries a portion of weight of the towed rear unit.

Abstract: Embodiments of the present invention provide a hubless caster that is at least as aesthetically pleasing as prior art hubless casters but that is significantly more durable. In one aspect, a hubless caster is provided that includes a frame member having two opposed sides. A generally ring-shaped mount portion projects from at least one of the two opposed sides of the frame member. In some embodiments, the hubless caster has the following three components mounted on the mount portion, in sequence moving radially outwardly from the mount portion: a) an annular backbone member defining an inner bearing race, b) a rolling element, and c) a wheel defining an outer bearing race.

Abstract: The invention relates generally to a friction sleeve for a caster stem. In certain embodiments, the friction sleeve has a slot, comprises a polymer, and has at least one detent adapted to engage a corresponding detent of the caster stem.

Abstract: The invention relates to a wheel for a furniture roller having a locking device, having a rigid wheel core with a hub for holding an axle and having an elastic wheel casing as a running surface. According to the invention, in order to be able to realize a locking device which is effective even for small wheel diameters, an inwardly pointing toothing is provided on an outer ring of the wheel core, wherein at least one aperture is formed in the outer ring between the tooth flanks, into which aperture a web, which is aligned axially in parallel and which is offset radially inward with respect to the running surface, of the wheel casing engages in a positively locking manner.

Abstract: An openable caster having a mount cap, a mount housing pivotally connected to the mount cap, a post protruding from a top surface of the mount housing, a switch disposed on the mount cap and a slide release mechanism for locking and releasing the caster. The slide release mechanism has a flange disposed within the mount cap. The flange includes a recess with a bracket, the bracket being accessible from an underside of the mount housing. The flange is operationally connected to the switch. Actuation of the switch moves the slide release mechanism from a locked state, in which the caster is closed and a portion of the post is secured by the bracket, to a released state in which the post is released from the bracket.

Abstract: A caster with a brake structure comprises a pivot plate. The pivot plate is allowed to pivot so as to be inserted into a corresponding positioning recess in an inner side of a wheel to stop the rotation of the wheel. Furthermore, while pivoting, the pivot plate will press the lifting block to move downwards, and then the lifting block will push the slide block to move horizontally, and finally the slide block will push the anti-slip block to press against the inner side of the wheel, thus improving the braking effect.

Abstract: A double offset caster system uses two sets of rotatable offsets relative to one another so that the caster can move relative to the load. The offset changes in order to change the relative offset between the caster position and the load.

Abstract: This invention relates to a caster in which a receiving groove is provided internally in the caster base and a pair of opposite holes for pivoting are provided at both sides of the receiving groove. Then, the pivot shaft of the wheel body is fitted into the holes of the receiving groove such that the wheel body can be pivotally fixed in the caster base. In this manner, the assembly of the parts can be conducted easily and conveniently without using any tool. Moreover, the caster has better aesthetic feature in appearance, since the pivot shaft is fitted invisibly in the holes of the receiving groove in the caster base. In application, as the pivot shaft is not exposed to the outside of the caster base, grappling with the other peripheral subject can be prevented.

Abstract: A castor includes an upright support tube, a mounting unit rotatably mounted on a lower end of the support tube, and a support bracket secured on the mounting unit. The mounting unit includes an upright hollow mounting post mounted on the support bracket and inserted into the support tube and a plurality of reinforcing plates mounted in the mounting post to reinforce a radial strength of the mounting post. The mounting post of the mounting unit has an outer wall provided with a plurality of radially and outwardly extending bushings abutting the inner wall of the support tube to reduce a friction between the mounting post and the support tube so as to facilitate rotation of the mounting post relative to the support tube.

Abstract: An electricity-conducting wheel includes a holding member, a wheel member, an electricity conducting plate, and an intermediate electricity conducting piece; the holding member is joined on a metallic bearing joined on a lower end of a rotary shaft on a bottom of a hospital bed/wheelchair, and has a pivotal hole thereon; the wheel member is joined on the holding member with a shaft being passed through the pivotal hole of the holding member; the electricity conducting plate is securely joined around the bearing, and wrapped in the holding member, and it has a bending electricity conducting part on a lower end thereof; the intermediate piece has an electricity conducting part on an upper end, and it is connected to the electricity conducting plate at the upper electricity conducting part; the intermediate piece has a hole on a lower end thereof, through which the shaft of the wheel member is passed.

Abstract: A caster of an endless structure is provided which is almost jam-proof even in the case of a bigger gap. The caster includes a first wheel supported on a mounting leg, a second wheel supported by an axle on one end of a suspension arm of which the other end is supported by an axle which also supports the first wheel, and a wrap-around member which is wrapped around the first and second wheels. The wraparound member is formed an endless belt form by connecting independent pieces to each other. The outer peripheral section of each piece is provided with a wider section and when the wraparound member is depressed and warps, the wider section is adapted to touch a wider section of the adjacent piece, thereby preventing further depression.

Abstract: An agricultural implement includes a hitch boom to which a pair of wing booms is pivotably connected. The wing booms are designed to fold forward from an extended position to a transport position. The wing booms are supported above a surface by wheels that provide the aforementioned support when the wing booms are in an extended position as well as the transport position. Maintaining surface contact of the wheels in both positions reduces the load placed on the hitch to which the hitch boom is coupled as well as the hitch boom itself. Multi-link draft links are connected between the hitch boom and the wing booms to provide support for the wing booms when the wing booms are in the extended position. The relative length of the draft links dictates how far the hitch telescopes when the wing booms are folded to the stowed or transport position.

Abstract: A castor wheel cover is provided for mounting on a wheel of a castor wheel assembly. The wheel has an outer surface and the castor wheel cover includes a floor engaging member having inner and outer surfaces. First and second sidewalls projecting from corresponding first and second side edges of the floor engaging member so as to define a channel therebetween. The channel is adapted for receiving the outer surface of the wheel therein.

Abstract: A luggage wheel assembly that typically includes a wheel body that has an axial bearing, an axle connected to the axial bearing and engaged to a wheel housing in use so that the wheel body has an outer side facing away from the wheel housing, a fixing plate secured to the outer side of the wheel body, a cover plate removeably secured to the fixing plate and extending from a central portion of the outer side of the wheel towards a rim of the wheel body.

Abstract: A wheel assembly for attachment to the leg of a trampoline has means for moving the wheel from a first raised position where the wheel is not supporting the trampoline leg above the ground, to a second position where the wheel is supporting the trampoline leg above the ground. In that way the trampoline can be rolled on wheels without having to subsequently remove the wheel assemblies for storage.

Abstract: A wheel for a piece of lawn equipment specifically designed not to produce tracks in the lawn as the lawn equipment moves over the lawn. The wheel is made of two parallel circular discs spaced apart by a center spacer. The two discs are relatively thin and thereby have minimal contact with the grass blades when rolling over the lawn. The height of the wheel and the diameter of the axle are sufficient so that glass blades on the lawn are not bent downward and extend upward between the two discs. An optional ring structure made of rubber or similar material is attached over the perimeter edge of each disc to provide greater traction and to protect the edge from damage. Located inside the wheel axle is an optional bushing or wheel bearing.

Abstract: The present invention relates to castor wheel assemblies, in particular but not exclusively, to castor wheel assemblies of a type suitable for use with trolleys, for example supermarket trolleys or luggage trolleys. Embodiments of the invention provide a swivel castor wheel assembly configured to support an object to be moved across a surface, the assembly comprising a swivel castor wheel having an axis of wheel rotation and a steering axis and mounted on a first member, wherein the first member is configured for connection to the object in such a way that the steering axis can be moved between first and second different rake angles without substantially changing a height of the object over the surface.

Abstract: An improved hubless castor wheel construction, particularly for a furniture article and the like, comprises a rotary element which is pivotably supported by a support element to be associated with a furniture article, said support element comprising two half-shells which can be coupled to locking means and are designed for defining an upright which can be engaged with connecting means to be connected to the furniture article, and an annular attachment for said rotary element.