Abstract: An autonomous floor cleaner can include a housing, a drive system for autonomously moving the housing over the surface to be cleaned, and a controller for controlling the operation of the autonomous floor cleaner. The drive system can include at least one drive wheel for driving the housing across a surface to be cleaned. The drive wheel can be selectively moved from an engaged or in-use position to a disengaged or maintenance position. In the disengaged or maintenance position, the wheel is disengaged from the autonomously moveable housing such that it can be pivoted, extended, removed, or otherwise moved farther away from the autonomously moveable housing.

Abstract: Axle mounting assemblies including an object, an axle, and a bushing assembly that operatively couples the object to the axle. The bushing assembly includes a bushing portion that extends at least partially through and engages a hub of the object, a fastener operatively retained relative to a bore defined by the bushing portion and positioned around the end region of the axle, and a force-receiving portion configured to selectively receive an installation force for operatively positioning the fastener over the end region of the axle.

Abstract: A hub assembly includes a retainer housing, a retaining member, a biasing element, and an occlusion. The retainer housing includes a wheel mounting sleeve and a pin sleeve. The wheel mounting sleeve includes an axle bore configured to receive an axle. The pin sleeve has a first end and a second end. The pin sleeve includes a conduit between the first end and the second end. The first end is in fluid communication with the axle bore. The retaining member and the biasing element are in the conduit. The retaining member is configured to engage a groove in an axle. The biasing element is configured to bias the retaining member towards the axle bore. The occlusion is proximate to the second end of the pin sleeve. The occlusion is configured to inhibit the retaining member from exiting the conduit at least prior to coupling the hub assembly to a wheel.

Abstract: A locking wheel useful for wheels on small vehicles. The locking wheel fits over a shaft and has a bore for receiving the end of the shaft. An outer member is connected to and spaced from the hub. A finger is adjacent to the bore and has a protrusion that extends into the bore. The finger is resilient and movable between a first and second position. The first position has the protrusion protruding into the bore and the second position has the protrusion outside of the bore with the finger being bent radially outward. The shaft has a notch or hole that receives the finger's protrusion. A locking device may selectively be placed between the outer member and the hub to prevent the finger from moving into its second position, thereby locking the hub onto the shaft.

Abstract: A wheel retaining device is provided for axially retaining a wheel on an axle having a notch. The cap is adapted for being affixed to a wheel. One or more springs is affixed to the cap at a lateral edge. The springs have a first position wherein the distal ends are located radially outward from the lateral edge. The springs are bendable into a second position wherein the springs are adjacent to the inboard side of the outer plate so that distal ends are urged inward. The distal ends include a protrusion that is adapted for being received in a notch on the axle. The cap is held onto the wheel by tabs that extending into apertures and catching behind the apertures. The cap is designed for maintaining the lateral position of the axle with respect to the wheel to which it is attached.

Abstract: The apparatus and system described is directed to securing a wheel to an axel without the use of separate tools or devices. The present invention allows for securing the wheel to the axel through the use of a specialized locking mechanism and wheel bearing. When mated, these two elements allow for a wheel that does not require user access to a central hub in order to replace the wheel. Thus, the apparatus and device provide for wheel geometries that take advantage of lack of a hub. For example, the present invention allows for wheel designs that enable a wider range of performance characteristics than offered by prior art devices.

Abstract: A hub assembly includes a retainer housing, a retaining member, a biasing element, and a restraining element. The retainer housing includes an axle bore configured to receive an axle and a pin sleeve. The pin sleeve includes a first end in fluid communication with the axle bore, a second end, and a conduit between the first end and the second end. The retaining member is in the conduit and is configured to operatively engage a groove in an axle. The biasing element is in the conduit and is configured to bias the retaining member towards the axle bore. The restraining element is configured to prevent the retaining member from exiting the second end of the pin sleeve at least prior to coupling the hub assembly to a wheel. A wheel assembly can include the hub assembly and a wheel.

Abstract: A hub assembly includes a retainer housing, a retaining member, a biasing element, and an occlusion. The retainer housing includes a wheel mounting sleeve and a pin sleeve. The wheel mounting sleeve includes an axle bore configured to receive an axle. The pin sleeve has a first end and a second end. The pin sleeve includes a conduit between the first end and the second end. The first end is in fluid communication with the axle bore. The retaining member and the biasing element are in the conduit. The retaining member is configured to engage a groove in an axle. The biasing element is configured to bias the retaining member towards the axle bore. The occlusion is proximate to the second end of the pin sleeve. The occlusion is configured to inhibit the retaining member from exiting the conduit at least prior to coupling the hub assembly to a wheel.

Abstract: A wheel for mounting to an axle of a wheeled product, the wheel comprising an axle receiving bore extending from a front wall to a rear wall of the wheel; the axle receiving bore comprising at least one finger integral with the wheel and extending towards the front wall of the wheel, the finger comprising a detent facing inwardly into the axle receiving bore, the finger being adapted to be flexed from an insertion position to a locking position and from a locking position into an unlocking position, the finger being flexed outwards in the insertion position as the axle is inserted within the axle receiving bore, and the finger being flexed inwards to insert the detent into a notch of the axle once the axle is inserted in the axle receiving bore in the locking position; and the finger being flexed outwards thereby disengaging the detent from the notch in the unlocking position.

Abstract: A hub assembly includes a housing, retaining element, biasing element, and hand-maneuverable release mechanism. The housing includes an axle sleeve including an axle bore configured to receive an axle and a pin sleeve including a first end in fluid communication with the axle bore, second end, and conduit between the first end and the second end. The retaining element is within the conduit and is configured to operatively engage a groove in an axle. The biasing element is within the conduit and is configured to bias the retaining element towards the axle bore. The hand-maneuverable release mechanism is configured to displace the retaining element away from the axle bore.

Abstract: A fastening element for fixation of a wheel on a wheel axle has a first section and a second section that are movable relative to each other and are separated from each other by a plane of separation. The first section has devices for fixation on the wheel axle. The second section has a wheel axle cover. A substantially closed outer wall that is divided by the plane of separation is provided on the fastening element.

Abstract: A wheel device for a carrier comprises a wheel, a shaft, a clipping fastener and a cover. The shaft passes through the wheel and has a channel at one end. The clipping fastener has a plurality of radially curved claws inwardly extending from an outer portion thereof and the claws are engaged into the channel to pivotally secure the wheel around the shaft. The cover has a connecting structure such as a snap-fit at an inner surface thereof for engaging with the clipping fastener.

Abstract: A wheel assembly includes a wheel and a hub assembly. The hub assembly includes a retainer housing, retaining member, biasing element, and restraining element. The retainer housing includes a wheel mounting sleeve and pin sleeve. The wheel mounting sleeve includes an axle bore configured to receive an axle and configured to be inserted within a sleeve bore of the wheel. The pin sleeve includes a first end fluidly communicating with the sleeve bore, a second end, and a conduit therebetween. The retaining member, disposed within the conduit, is configured to operatively engage an axle groove and includes a lip wider than a first end shoulder to prevent the retaining member from exiting the first end. The biasing element, disposed within the conduit, is configured to bias the retaining member towards the axle bore. The restraining element is configured to prevent the retaining member from exiting the second end.

Abstract: A quick release structure for front wheels of baby strollers includes an upper mount disposed on one leg support thereof. A fixing pin is arranged on the upper mount for inserting into a locking hole on the leg support. Moreover, a lower mount assembled with a wheel is set on the bottom of the upper mount. A connection rod at the top of the lower mount is inserted into the upper mount. A fixing groove for locking with the fixing pin is formed around the side wall close to the top of the connection rod. A positioning slot is provided on the bottom of the upper mount for mounting a L-shaped positioning rod pivoted on the lower mount. Thus the stroller can keep moving forward without changes in directions by pressing the positioning rod to be locked into the positioning slot for the purposes of easy assembling, storage and transportation.

Abstract: A wheel assembly for mounting to an axle of a wheeled product includes a wheel having an opening and a locking element which is insertable in the opening to secure the wheel to the axle. The locking element has a portion engaging the wheel and a second flexible portion for releasably engaging the axle. The locking element is so constructed as to allow a tool to be inserted therethrough for releasing engagement between the wheel assembly from the axle.

Abstract: A wheel-mounting sleeve and retainer is described. The wheel-mounting sleeve includes a sleeve body, formed and dimensioned for mounting through a wheel-bearing bore in a wheel and into telescoped relation over an axle having a retaining notch. The wheel-mounting sleeve includes at least one retainer discrete from the sleeve body. The retainer includes monolithic spring and lug portions, and is coupled to the sleeve body such that the lug portion is resiliently positionable through a port in the sleeve body and into the axle bore to a detent position wherein the lug portion engages the retaining notch of the axle to constrain the axle within the axle bore. A method of using the wheel-mounting sleeve and retainer is also described.

Abstract: A wheel mount assembly adapted for use in securing a camber tube to a wheelchair frame comprises an axle plate, at least one axially displaceable member adapted to be fixed in relation to the axle plate, and at least one radially displaceable member adjacent the axially displaceable members. The axially displaceable member is adapted to be axially displaced to cause the radially displaceable member to be displaced to tighten against the camber tube to hold the camber tube in place.

Abstract: A wheel assembly including a wheel that has a hub and an annular rim. The hub is disposed at or near the center of the rim. The wheel assembly also includes an axle sleeve which is coaxial with the hub. A method of constructing a wheel is also provided. A wheel having a bore is blow molded. The wheel is extracted from a mold. An axle sleeve is fitted the bore in the wheel.

Abstract: An apparatus for allowing pre-assembly of a wheel and wheel spacer and a method of using the apparatus are disclosed. The apparatus provides a structure within the hub of a molded plastic wheel and a structure on a spacer segment for engagement of the two parts. A variety of embodiments are described in which the spacer can easily be snapped, screwed, or pressed into the wheel. This allows pre-assembly of the spacer and wheel so that when needed, a spacer need not be found or acquired, but is readily available to the user.

Abstract: A wheelchair wheel locking system reduces the likelihood that a wheel will inadvertently disengage from the wheelchair. An axle is attached to the wheel and has a protrusion for engaging annular grooves within a wall forming an inner passage through an axle receptor attached to the wheelchair. The axle is inserted in an axial direction into the inner passage and has a first locked position in which the axle is fully engaged with the axle receptor, and a second locked position in which the axle is partially engaged with the axle receptor. If a quick release lock is inadvertently released by, for example, pressing a release button, the protrusion retracts and disengages from a first annular groove within the wall of the axle receptor, the axle may start to move axially relative to the axle receptor to a position in which the wheel will disengage from the wheelchair.

Abstract: A drive wheel roller disengages a drive wheel on a device from the drive axle connected directly to a motor, such that the drive wheel can spin freely to move the device when the motor is not on. The axle has an aperture which aligns with an aperture on the hub of the drive wheel. When the pin is in place the drive axle and the wheel turn in unison. When the pin is removed the wheel can spin freely on a bearing located between the wheel and the axle. A screw cap locks the wheel on the axle.

Abstract: A blow-molded wheel including an axle retainer assembly. The retainer assembly (31) includes a housing (42) having transverse sleeves that support an axle (14) and a spring biased retainer pin (10) that mounts to an annular groove (12) at the axle. The housing is supported in a cavity formed into a wheel spoke (18) and a bore of a wheel hub and is retarined upon the shrinkage of the plastic around the housing. An aperture of the pin sleeve facilitates retraction of the pin and release of the wheel from the axle.

Abstract: A blow-molded wheel including an axle retainer assembly. The retainer assembly includes a housing having transverse sleeves that support an axle and a spring biased retainer pin that mounts to an annular groove at the axle. The housing is supported in a cavity formed into a wheel spoke and a bore of a wheel hub and is retained upon the shrinkage of the plastic around the housing. An aperture of the pin sleeve facilitates retraction of the pin and release of the wheel from the axle.

Abstract: A clamping assembly for clamping an axle of wheel is provided. The clamping assembly comprises: a seat including an upper plate and a hollow cylinder integrally formed with the upper plate, the upper plate having a protrusion with a notch, an opening, two grooves provided beside the opening, the distance between the grooves being increased as the notch is closed, and two parallel walls on both sides of the notch; a clamp including an arc-shaped pull positioned on the notch, said pull having two parallel arms for abutting against the two walls of the seat, and two resilient legs, the distance of the legs being gradually wider toward their ends, and a guiding block; a cover having an inner rim for engaging the seat; and a rivet punching through the cover and the seat.

Abstract: A fast wheel changeover system for a camera dolly includes a cap on the end of each wheel axle. The cap has an annular shoulder and a shaft section. A quick release clip has a spring with a bridge section which fits over the cap. A wheel can be quickly changed over by lifting the bridge section over the annular shoulder, by hand and without tools, and then sliding the clip off of the axle. Wedges provided with the dolly allow wheels to be easily lifted off of the ground, for wheel changeover.

Abstract: A vehicle wheel attachment system for easily changing a tire. The vehicle wheel attachment system includes a rim, an attachment assembly and a rotor. The attachment assembly extends from a first side of the rim. The rotor has a central aperture that receives a distal portion of the attachment assembly therein when the first side of the rim is positioned to abut the rotor. The rotor has plurality of holes that extend into a wall of the central aperture of the rotor. The distal portion of the attachment assembly includes a plurality of rods that are selectively positioned between an extended position and a retracted position. Each of the rods is aligned with an associated one of the holes when the distal portion of the attachment assembly is inserted into the central aperture of the rotor. The rods are selectively extendable into the holes. Thus the distal end of the attachment assembly is coupled to the rotor such that rotation of the rotor rotates the rim.

Abstract: A wheel unit for an article of luggage equipped with wheels to facilitate translation of the luggage along the ground. The wheel unit includes a wheel housing connected to the luggage, and a wheel support and a wheel rotatably but removably connected to the wheel housing, the wheel support being mounted to the wheel housing in such a way that it is easily removable. The wheel may be quickly and easily replaced when damaged without disassembly of any other part of the luggage article.

Abstract: A support of a golf cartwheel has a holding member, an axle and a curved fastening plate. The axle has an outer end connected to the wheel, and an inner end passed into the holding member. The inner end has two square blocks each received in a respective square part of the holding member. The axle further has an intermediate rod portion between the square blocks. The curved fastening plate is resilient, and is pivoted on the holding member. The curved fastening plate has a curved protrusion and a curved portion. The curved fastening plate can be secured in a closed position where the curved protrusion engages the axle rod portion with the curved portion contacting the axle rod portion, and the fastening plate is inserted into between, and secured by the square parts of the holding member in order to prevent the axle from separating from the holding member.

Abstract: A blow-molded wheel including an axle retainer assembly. The retainer assembly includes a housing having transverse sleeves that support an axle and a spring biased retainer pin that mounts to an annular groove at the axle. The housing is supported in a cavity formed into a wheel spoke and a bore of a wheel hub and is retained upon the shrinkage of the plastic around the housing. An aperture of the pin sleeve facilitates retraction of the pin and release of the wheel from the axle.

Abstract: A wheel mounting arrangment, which includes a wheel shaft having a locating block at one end fitted into a locating hole on a leg at a golf club carrier, and lever turned about a pivot at the leg and engaged into a transverse positioning groove at the locating block of the wheel shaft to lock the wheel shaft, wherein the pivot is disposed in parallel to the wheel shaft, and the lever is turned about the pivot in direction perpendicular to the wheel shaft, the wheel shaft has two guide slopes at two opposite lateral sides of the transverse positioning grooves for guiding the locking block of the lever into the locking position; the locating hole of the leg has a diameter gradually increased toward the outside of the leg, and the locating block of the wheel shaft has an outer diameter fitting the diameter of the locating hole.

Abstract: A fixing device for wheel seats of a baby stroller engaged and fixed each with/on one of the wheel seats, it has a fixing rod secured on the bottom of a foot. The fixing rod has one of its ends protruded down and out from a pipe mouth of the foot, the end is provided at least with a transverse slot. More than one push buttons are provided respectively in the transverse slots of the fixing rod and are displaceable transversely in the transverse slots. An elastic member is received in receiving holes on the push buttons. When the two push buttons are transversely pushed in the transverse slots, they are endued with elastic restoring function. When the foot with the fixing device thereon is extended in the axle hole of the wheel seat, the push buttons are appropriately pushed outwardly by the elastic member to have the bottom of the wheel seat limited by the push buttons from dropping. Assembling and dismantling of the wheel seats are very convenient.

Abstract: A retention mechanism for an axle assembly includes an axle and a retainer coupled to the axle thereby securing a wheel on the axle. The retention mechanism of the present invention includes a plurality of fins disposed on the retainer and a plurality recesses and extension disposed on the axle. The radial extensions engage the fins such that the retainer is prevented from rotational movement relative to the axle such that frictional wear between the axle and retainer is substantially reduced while also substantially distributing stresses realized within the retainer.

Abstract: Integrated wheel and wheel hub assembly for a vehicle, including a wheel hub (3), a wheel (2), carried by the wheel hub (3), a suspension mount (5) to connect the wheel hub (3) to the vehicle body, a rolling bearing, interposed between the wheel hub (3) and the suspension mount (5), and a brake rotor (39). The wheel includes a a rim (10) for the insertion of a tire (11) and a wheel flange (13), substantially radial, to connect the rim (10) with the wheel hub (3), the empty wheel flange (13) being prepared as an independent component, both of the rim (10) and of the wheel hub (3), and being connected solidly axially and angularly and in a secured manner to the wheel huo (3), and being connectable in a removable way to the rim (10).

Abstract: A wheel mounting arrangement includes a holder base having a bottom chamber, a transverse through hole across the bottom chamber, a top chamber, and a radial locating slot communicating with the top chamber, a retainer fastened to the bottom of a wheel tube to secure the wheel tube to the longitudinal top chamber, a wheel axle mounted in the transverse through hole of the holder base to hold a pair of wheels, a stop block coupled to the wheel axle inside the bottom chamber and forced downwards by a compression spring in the bottom chamber, wherein the retainer has a bottom block plugged into the bottom end of the wheel tube, and two curved springy retaining rods stopped against the inside wall of the wheel tube, one curved springy retaining rod having a hooked top end extended out of a locating hole on the wheel tube and engaged into the radial locating slot on the holder base to secure the wheel tube to the holder base.

Abstract: A wheel assembly for a stroller includes a wheel base including a sleeve having an inner periphery containing a passage and an outer periphery transversely containing a cavity connecting to the passage, and an extension having a first end portion extending from the outer periphery of the sleeve and having an inner wall containing a receiving space connecting to the cavity. A wheel is rotatably mounted on a second end portion of the extension. A biasing member is pivotally received in the receiving space and includes a first end portion pressing on the inner wall containing the receiving space and a second end portion formed with a locking hook extending through the cavity into the passage.

Abstract: A fixing device for a wheel of a baby stroller utilizes an axle hole of the wheel formed to receive a rotation axle provided with a recessed neck. The device includes a sleeve provided in the axle hole of the wheel with a receiving chamber. The sleeve includes a pipe to receive the rotation axle. A spring loaded push button is also provided in the receiving chamber. When the push button is pushed down to force positioning rods to slide in inclined slots of the push button, the positioning rods exit a recessed neck of the pipe, and the wheel can be removed from the rotation axle. The device allows fast assembly and disassembly of the wheels so that a customer can maintain and change the wheels by himself. The device also allows the reduction of volume for packaging to increase shipping capability.

Abstract: An engaging device for disposing a wheel to an axle of a golf cart includes a disk member fixedly connected to the wheel and having a recessed portion defined therein. An oblong hole is defined through the disk member. An actuating plate is movably received in the recessed portion and has a recess defined in a lower edge thereof. A shoulder portion extends inwardly from an inner periphery defining the recess. A lever extends laterally from a side of the actuating plate. A biasing member is disposed to the disk member and biasedly presses the lever downwardly. The axle extends through the wheel, the recess and has an annular groove defined in a periphery thereof so that the shoulder portion is disengagably received therein.

Abstract: A wheel assembly for use with carts employs a sleeve element as an intermediate member between a central axle and both the wheel and the cart body. The sleeve element has an inner recess shaped to receive an end portion of the axle and a first external surface for rotatably engaging within a hole in the cart such that a part of the sleeve element functions as a bearing disposed between the axle and the hole. The sleeve element also has a resilient catch element for retaining it within the hole such that the axle is prevented from moving longitudinally while being free to rotate relative to the cart body. The sleeve element also provides a substantially cylindrical external surface for rotatable mounting of the wheel.

Abstract: An axle and wheel mount assembly for improving packaging efficiency and allowing easy wheel attachment and removal is disclosed. The axle and wheel assembly includes a novel axle mounting system that is adapted to hold several short axles instead of one long axle which spans the entire width of the transporter. The axle and wheel assembly also includes a novel wheel attachment system which allows wheel attachment and removal without the use of tools and prevents the wheels from accidentally disengaging from the axle.

Abstract: A reusable, releasably lockable wheel assembly comprising a wheel having a centrally disposed hub defining an aperture in which is received an axle. A spring having diametrically opposed lugs is disposed on one side of the hub and the lugs extend into the aperture of the hub so that when the axle is inserted into the aperture, the lugs are biased into the groove on the end of the axle to lock the wheel to the axle. The lugs can be forced outwardly by a tool to withdraw the lugs from the groove so that the axle can be unlocked with respect to the wheel for removal of the wheel. In one embodiment, cooperation between a wheel cover and the spring limits slidable movement between the wheel and axle. In another embodiment, cooperation between an end cap on the wheel hub and the spring limits the slidable movement.

Abstract: A wheel mounting structure including a wheel shaft fastened to a locating hole on the leg of a golf club carrier to hold a wheel, and a lever pivoted to the leg and turned to lock the wheel shaft. The wheel shaft has a locating block at one end fitted into the locating hole, a collar connected to the locating block and abutting the locating hole. The lever has a stop rod section and a retainer rod section which are respectively forced into engagment with a recessed bottom hole on the locating block and a bottom retaining groove on the collar when the lever is turned to the locking position to lock the wheel shaft on the leg of the gold club carrier.

Abstract: This invention relates to a dismounting device for golf cart wheel, being composed of a wheel shaft and a connector, the front of the wheel shaft having an inserting part, the inserting part being composed of a circular guide part and a square locating part, on the circumference of the circular guide part having a groove; the connector having a fitting hole formed at its one side, the fitting hole being composed of a circular hole and a square groove, the inserting part of wheel shaft can be inserted quickly into the fitting hole of the connector by the circular guide part. An upper cover being hinged on the connector and can be rotated to open or close, at the bottom of the upper cover having a stop plate which exenden to the groove of the circular guide part to retain the wheel shaft.

Abstract: A coupling device for coupling a wheel to a wheel strut of a golf trolley includes a wheel mounting bracket, a catch member, a compression spring and an axle member. The wheel mounting bracket is adapted to be mounted on one end of the wheel strut and has a slide channel with a restricted open end portion and a closed end opposite to the open end portion, and a tubular connecting portion which confines an insert hole that is transverse to and communicated with an interior of the slide channel. The catch member includes a block unit which extends slidably into the slide channel via the open end portion and which has a side wall formed with a tab to prevent removal of the block unit via the open end portion of the slide channel, and a hook unit which extends from the block unit and into the slide channel toward the insert hole of the connecting portion. The compression spring is disposed inside the slide channel and biases the block unit outwardly of the slide channel.

Abstract: A handcart wheel-mounting assembly includes a mount member which has a first tubular portion, a pair of first lug portions formed on an outer periphery of the first tubular portion and each having a slot defined therein, a first socket vertically defined in each of the first lug portions and communicating with associated slot, a second tubular portion co-axially formed in the wheel and having a tubular compartment defined therein for receiving the first tubular portion, a pair of second lug portions formed on an outer periphery of the second tubular portion each having a substantially U-shaped recess defined therein and communicating with the compartment for receiving a corresponding one of the pair of first lug portions, a second socket vertically defined in each of the pair of second lug portions and communicating with associated recess for alignment with associated first socket, and a resilient member received in the slot of each of the pair of first lug portions and having a latch formed thereon which is

Abstract: An all terrain baby stroller using an axle assembly that allows the rear wheels to be easily and quickly mounted and removed from the stroller frame without tools. The axle assembly has each rear wheel rotatably mounted on an outward end portion of a stub axle. A tubular rear axle defines a cylindrical interior chamber with an outward end opening sized to slidably receive the stub axle inward end portion therethrough for positioning of the stub axle inward portion coaxially within the interior chamber. When so positioned, a circumferential groove of the stub axle inward end portion is positioned within the interior chamber. The tubular sidewall of the rear axle has an aperture positioned axially inward from the interior chamber outward opening and at a location to coincide with the circumferential groove. A lock pin is carried by a strip spring and is movably disposed in the sidewall aperture for selective movement between an engagement position and a disengagement position.

Abstract: A handcart wheel-mounting apparatus includes a wheel mounted by means of a number of latches each biased by means of an elastic element, on a hub member in turn mounted by means of an annular washer and a cap, on a wheel shaft mounted on a wheel support. The hub member comprises a rim, an axial bore formed therethrough, a tubular bearing coaxially formed therethrough about the axial bore, a plurality of recesses formed therein about the axial bore, and a plurality of holes radially formed therethrough so that each of the holes communicates with a corresponding one of said recesses. A number of elastic elements are received in the recesses. A number of latches each are formed on a corresponding one of the elastic elements and the latches are biased through the holes by means of the elastic elements. The wheel shaft is inserted through a passage formed transversely through the wheel support, the annular washer, and the axial bore. Then, a tip of the wheel shaft is firmly fitted in the cap.

Abstract: A baby carriage wheel mounting device comprising a wheel holder having a hollow wheel axle directly molded thereon to hold a wheel at one end by a wheel cap. The hollow wheel axle comprises a square rod on its inside and two opposite retaining slots on the peripheral wall thereof; the wheel cap comprises a hollow plug rod inserted through a hole on the wheel into the hollow wheel axle with two opposite projecting blocks respectively engaged into the two retaining slots on the wheel axle permitting the square rod of the wheel axle to be received in a square hole thereon.

Abstract: An all-terrain baby stroller using an axle assembly that permits the stroller frame to be collapsible. The axle assembly has a coupler at each end of a tubular axle. Each coupler assembly employs two coupler members, one connected to an upright frame member and the tubular axle, and the other one connected to a horizontal frame member. The couplers are rotatably connected to each other by a hub member. A portion of one coupler rotatably fits within the other coupler, and the hub member extends coaxially through both couplers and allows the one coupler to rotate about it. A stub axle carrying one of the rear wheels is removably received within the hub member. A locking pin is inserted into a hole formed through the stub axle, hub member, an inward one of the couplers, and the tubular axle to releasably retain the stub axle in place. A pair of upper frame members is pivotally connected to the upright frame members and removably connected to the horizontal frame members to permit folding of the frame.

Abstract: A double-foot plate pedaling skate, comprising two foot plates alternatively pedaled to force three sets of wheels to run. The three sets of wheels include a first set of wheels mounted on the wheel axles of one foot plate at one side, a second set of wheels mounted on the wheel axles of the other foot plate at the opposite side, and a third set of wheels respectively secured to and retained between the two food plates permitting the two foot plates to be alternatively disposed at two different angular positions at 180.degree. from each other so that the two foot plates can be alternatively pedaled to provide axle and wheel rotation.

Abstract: A wheel assembly includes a wheel and a hub assembly. The hub assembly includes a retainer housing, retaining member, biasing element, and restraining element. The retainer housing includes a wheel mounting sleeve and pin sleeve. The wheel mounting sleeve includes an axle bore configured to receive an axle and configured to be inserted within a sleeve bore of the wheel. The pin sleeve includes a first end fluidly communicating with the sleeve bore, a second end, and a conduit therebetween. The retaining member, disposed within the conduit, is configured to operatively engage an axle groove and includes a lip wider than a first end shoulder to prevent the retaining member from exiting the first end. The biasing element, disposed within the conduit, is configured to bias the retaining member towards the axle bore. The restraining element is configured to prevent the retaining member from exiting the second end.