Abstract: An automatically retractable swivelling wheels device of a pullman case is disclosed. The swivelling wheels device comprises a bushing, in which a spring retainer is formed on a bottom of a circumferential flange of the bushing, a wheel housing assembly and a swivelling wheels. The swivelling wheels is permitted to swing in any direction as the pullman case moved by a force, and once the force is removed, the swivelling wheels is automatically returned to its original direction by the cooperation of the restoration force of two out of shape springs provided in a C shaped groove of the wheel housing assembly with the spring retainer therebetween in order for the swivelling wheels to be retracted to a recess of the pullman case.

Abstract: A supporting device for a wheeled suitcase includes a positioning member, a leg member, a locking unit and a biasing member. The positioning member is mounted on a back wall of the suitcase, and has a mounting wall in a longitudinal direction, and a positioning unit disposed on an upper end of the mounting wall to extend in a first transverse direction. The positioning unit has a pivot member that extends in the first transverse direction. The leg member is pivoted to the pivot member at the upper end so as to turn therearound to an operative inclined position, or so as to move toward the mounting wall in order to be folded thereto. The leg member defines an opening for access to the mounting wall. The locking unit is disposed to be accessible via the opening, and includes a retaining member and an engaging tongue disposed on the mounting wall and the leg member, respectively.

Abstract: A caster assembly for engaging, lifting and roll transporting columns of support racks, such as warehouse pallet racks, for movement of the support racks, includes an adaptor bracket secured to a housing of the caster assembly for engaging holes arranged on a web portion of a two-lines-of-holes-type column. The adaptor bracket is secured to the housing using fasteners arranged through selectively spaced fastener holes through a front wall of the housing. For a line-of-holes single type column, the adaptor bracket can be removed and individual lugs can be secured to the selectively spaced holes of the housing which correspond to the hole spacing of the column. Thus, the same caster assembly can be adapted to engage a column of either type.

Abstract: A three-wheel pivot-caster assembly that provides mobility for a power tool is described. The pivot-caster assembly includes a first frame assembly with two wheels and a second frame assembly that has a caster assembly which includes a swivel wheel. The first and second frame assemblies may be adjusted to accommodate power tools of various sizes. Additionally, a "stopping" mechanism is provided to maintain the swivel caster in its set position when the power tool is lifted. A straight line action clamp mechanism with locking feature prevents accidental actuation of the swivel caster when the tool is lifted or used over an uneven surface.

Abstract: A supporting device for a wheeled suitcase includes a positioning member to be mounted on the back wall of the suitcase, and a leg member which has an upper end connected pivotally to the positioning member and a bottom wheel. The leg member is turnable outward from the back wall of the suitcase to be in an operative inclining position and inward to be in a position folded over the back wall. A locking member can lock the leg member in the operative inclining position. The locking member is operable for releasing the leg member.

Abstract: A retractable wheel assembly for moving an object having a vertical surface for attachment of the wheel assembly, comprising a plurality of arms, each arm having a wheel at one end, a plurality of pivot assemblies for receiving the arms such that when the pivot assemblies are attached to the object, the arms pivot in a vertical plane about the pivot assembly, mounting means for attaching the pivot assemblies to the object, and means for locking the wheel assembly in a retracted position wherein the weight of the wheel assembly maintains the wheel assembly in the retracted position, and for locking the wheel assembly in an extended position wherein the weight of the object maintains the wheel assembly in the extended position.

Abstract: A caster assembly for engaging, lifting and roll transporting columns of support racks, such as warehouse pallet racks, for movement of the support racks, includes an adaptor bracket secured to a housing of the caster assembly for engaging holes arranged on a web portion of a two-lines-of-holes-type column. The adaptor bracket is secured to the housing using fasteners arranged through selectively spaced fastener holes through a front wall of the housing. For a line-of-holes single type column, the adaptor bracket can be removed and individual lugs can be secured to the selectively spaced holes of the housing which correspond to the hole spacing of the column. Thus, the same caster assembly can be adapted to engage a column of either type.

Abstract: A high-capacity container has a receiving bracket for a hook, adjustable support rollers, upper straps which form forklift pockets, wherein slide rails are located under a container floor and connected to receptacle supports, support rollers are located in corner areas below the container floor to be pivoted-in and pivoted-out to be positioned in the container and in a plane below the corners, while the forklift pocket includes upper and lower straps, and a reinforcement is provided between and in the slide rails and a frame profile in the area of the forklift pockets.

Abstract: A baggage caster is composed of a wheel frame, a wheel, and a retrieving mechanism. The wheel frame is fastened pivotally with a baggage shell such that the wheel frame is capable of swiveling between a retraction position and an extraction position. The wheel is fastened pivotally with the wheel frame such that a plummet of the pivot center of the wheel does not coincide with a plummet of the pivot center of the wheel frame at such time when the wheel frame is located at the retraction position. The wheel frame is therefore capable of swiveling to remain at the extraction position when the baggage shell is exerted on by a load. The retrieving mechanism is intended to provide the wheel frame with an elastic force to enable the wheel frame to return to the retraction position when the baggage shell is relieved of the load exerting thereon.

Abstract: Automatically retractable and extendable wheel assembly is disclosed for use in conjunction with luggage cases, especially upright carry-on luggage cases and garment bags. Luggage wheels automatically extend to provide a luggage case which is tilted and with a long wheel base so that the case may comfortably and with stability be pushed or pulled across the floor upon three or more wheels, thereby removing the weight of the case from the user's arm. When the case is removed from the floor, the luggage wheels automatically retract to a protected position, thereby reducing the overall dimensions of the case to permit it to be carried aboard aircraft and stored in overhead luggage bins. Apparatus is disclosed for preventing inadvertent retraction of a wheel when the wheel encounters a pebble or crack in the floor.

Abstract: A caster assembly of a shopping bag is composed of a base for holding the shopping bag, two support frames fastened pivotally with the base such that the support frames can be folded and unfolded, two elastic elements enabling the support frames to return to a folded position from an unfolded position, two casters fastened pivotally with the support frames, and a locating member fastened pivotally with the support frames such that two arms of the locating member are located between the base and the support frames at such time when the locating member is folded, and that the arms of the locating member push the support frames to spread out at such time when the locating member is unfolded.

Abstract: An adapter is removably attached with engagement means, such as screws, to an object such as the leg of a piece of furniture, such as a table or chair. The adapter attaches to the furniture leg in such a manner that the screws do not mar the furniture, nor do they require a groove, indentation or recess on the furniture leg for attachment thereto. The adapter is configured so that the distance from the leg to the ground is less than the diameter of the wheel mounted on the adapter. The adapter is also configured so that the leg is laterally displaced from the wheel. The wheel is also swingably retractable so that the furniture can be made stationary without having to remove the adapter.

Abstract: A stage or other structure having support legs includes rollers which are mounted so as to be supporting the stage in a first position and having the stage legs support the stage in a second position. A lift mechanism includes actuating pedals near the ground for raising and lowering the assembly. A linkage pivots the roller mounting member between a raised and lowered position relative to a cross member on the frame. A second pedal is selectively engageable by a single foot for retaining the roller assembly in either the raised or lowered positions.

Abstract: A wheel for facilitating rolling of a table over a ground surface. The inventive device includes a mounting assembly for securing to a lower end of a table leg. A wheel support assembly is pivotally mounted to the mounting assembly and rotatably supports a wheel beneath the table leg. The wheel support assembly can be pivoted laterally of the table leg such that the mounting assembly engages the ground to preclude unintentional movement of the table.

Abstract: A concealable baggage caster comprises a caster housing fastened to the bottom edge of a baggage and provided therein with a space for housing a caster and a caster frame. The caster housing is provided respectively in the left and the right side walls thereof with an elongate slot, a pivoting hole and a locating hole. The caster is pivoted between the two lugs of the caster frame which is mounted on a shaft received in the pivoting holes of the caster housing and the pivoting holes of the caster frame. An action plate is fastened pivotally to the action holes of the caster frame. Two guiding pieces and two fevers are pivoted respectively on the two pivoting shafts which are slidably received in the elongate slots of the caster housing. Each of two levers has a central fulcrum hole dimensioned to receive therein a shaft which is also received in the locating holes of the caster housing.

Abstract: An arm rest (1) for motor vehicle rear seats, comprising an elongated body (2) and a load bearing structure (4) having a tubular end portion (5) swingably supported on a shaft (7) adapted to be fixed in a stationary condition to the lateral sides (F) of a recess (R) of the seat (S) backrest (B). The shaft (7) incorporates rotational friction members (15, 16) cooperating with the tubular end portion (5) of the load bearing structure (4).

Abstract: A retractable caster assembly incorporating a strut lock formed of a sleeve mounted on the strut for sliding movement thereon, between closed position removed from the pivot axis and not interfering with the folding of the strut, and operative position seated over the pivot axis to hold the strut members in aligned, operative position and prevent their pivoting with respect to each other. Sleeve control means are mechanically associated with the sleeve automatically to move the sleeve to closed position when the wheel is being retracted and to operative position when the wheel is moved to operative position.

Abstract: A retractable caster assembly includes a mounting unit and a foot unit. The mounting unit has a horizontal mounting plate and a hollow connector which projects downwardly from the mounting plate and which is formed with an outward stop projection and a slot immediately below the stop projection. The foot unit has a foot portion, a connecting shaft extending upwardly from the foot portion into an open lower end of the hollow connector, and a horizontal retaining plate extending from one side of the connecting shaft. The foot unit is mounted slidably to the hollow connector and is movable between a first position, wherein the retaining plate extends out of the slot of the hollow connector, and a second position, wherein the retaining plate is retracted into the hollow connector.

Abstract: A two position floor lock and caster assembly for a bed or the like includes a bracket adapted to be secured to the bed frame. A pair of links have ends pivoted to the bracket and free ends. A socket is pivotally joined to the free ends of the links so that rotation of the links raises and lowers the socket. A caster may be secured to the bracket or attached to the socket. A foot or floor lock may be secured to the bracket or the socket. A crank assembly is operatively connected to the links for raising and lowering the socket to move the floor lock or caster into operative engagement with the floor.

Abstract: A roller mechanism for supporting an article on a support surface for selective movement thereon. The roller mechanism including a support member rotatably connected to the article to be supported, a bearing for providing antifriction rotation between the support member and the article to be supported, an axle or axles connected to the support member, and a plurality of roller elements mounted about the support member in a generally circular pattern, each roller element being independently rotatable about an axle.

Abstract: A foldable caster, particularly suited for use with a swimming pool reel support, is foldable approximately 270.degree. between an operative position and a stowed position and is magnetically or otherwise secured in at least the storage position.

Abstract: A retractable wheel assembly, housed in an inverted well, has an elongated arm mounting wheels, is pivotally mounted in the well and is pivotally movable manually between a retracted position by which the arm is releasably locked interiorly of the inverted well and an extended operative position by which the arm is releasably locked with its wheels exposed. The arm has spring-biased detents for such manipulatively releasable locking engagements with detent recesses for both positions. Wheel assemblies in bottom rear-corner wells of a suitcase allow "wheel-barrowing" movement of the suitcase. Wheel assemblies in the bottom inverted wells at all four suitcase corners allow "trolleying" movement of the suitcase.

Abstract: An object may be easily moved across a surface by means of a rotatable roller mechanism, and may be secured in a desired location on that surface by rotation of the roller mechanism. The rotatable roller mechanism comprises a rigid plate containing a slot, a bar designed to seat within that slot, a holding mechanism allowing the bar to rotate in close proximity to the slot in the rigid plate, and a roller mechanism attached to the bar. The roller mechanism may consist of wheels or flat rollers surrounding an axle, which is attached to the bar by two connecting pieces. The rigid plate is attached to the underside of the object. When the object is lifted, the bar rotates in the holding mechanism to a position perpendicular to the rigid plate. The bar is held in this position when the object is lowered, by means of the bar fitting into the slot. In this manner the rollers are held against the surface, and the object may be easily moved across the surface.

Abstract: A retractable caster to facilitate moving an object. The caster comprises a frame having a planar base and sides circumscribing the base to form a cavity having an opening. The frame is secured to the bottom of the object. A first rigid flap is provided secured to the frame by a hinge to swing about an axis between open position perpendicular to the base and closed position parallel to but spaced from the base to close at least a portion of the cavity opening. A wheel is rotatably supported by a wheel support assembly secured to the flap. A portion of the wheel extends beyond the lower edge of the flap when in open position. An articulated strut is secured to and extends between a portion of the frame and the wheel support assembly. The strut folds when the wheel is in retracted position so that the wheel, wheel support and strut are fitted within the cavity between the base and the flap in closed position. A lock is provided with the strut for releasably locking the strut in operable position.

Abstract: A table is provided with a single retractable caster to facilitate manually transporting the table from one location to another. The retractable caster is located substantially directly below the center of gravity of the table, so that when the caster is extended to an "on" position, the table can be held in a generally poised condition over the caster wheel, and manually rolled across the floor. A pedestal-type base, having radially outwardly extending feet with glides provides outrigger support for the table during transport. The caster is shifted between the extended "on" position, and a retracted "off" position by simply tilting the table slightly about its base, such that a person having ordinary strength and dexterity can easily and safely move the table about a room without assistance.

Abstract: A table is provided with a single retractable caster to facilitate manually transporting the table from one location to another. The retractable caster is located substantially directly below the center of gravity of the table, so that when the caster is extended to an "on" position, the table can be held in a generally poised condition over the caster wheel, and manually rolled across the floor. A pedestal-type base, having radially outwardly extending feet with glides provides outrigger support for the table during transport. The caster is shifted between the extended "on" position, and a retracted "off" position by simply tilting the table slightly about its base, such that a person having ordinary strength and dexterity can easily and safely move the table about a room without assistance.

Abstract: The roller assembly of this invention comprises a grooved wheel attached to a perforated metal tape or spring which is movable over a sloping track by means of a toothed gear wheel or sprocket.

Abstract: A supporting roller assembly for a household appliance includes a fixed rear roller and a height-adjustable front roller. The front roller has a frame for mounting against a flat surface on the underside of the appliance, together with a vertically extending front wall at the front of the appliance mounting the head of an adjustment screw. The roller is carried on a roller carrier which is pivotally mounted on the frame member and carries a captive nut engaging the screw so that rotation of the screw causes the roller carrier to rotate about its pivotal engagement to raise and lower the front end of the appliance. The fixed rear roller assembly has a frame which snaps into an opening in a bottom wall of the appliance. The bottom wall has upwardly projecting flanges which overlay a press-in axle carried by the roller frame and journaling the roller and the flanges prevent any lengthwise movement of the axle which would cause it to disengage from the ears on the frame.

Abstract: The automatically extensible and retractable wheel unit for mounting on a corner of a suitcase includes a housing with an aperture at the underside thereof, a bifurcated bracket pivotally supported on the housing, a wheel carried rotatably on the bracket for pivoting along with the bracket between a retracted position and an extended position, and a push-pull member pivotally supported on the housing and connected to a bracket by a C-shaped spring member. When the wheel is in the retracted position, a portion of the push-pull member extends out of the aperture so as to be contacted with the ground to push the wheel automatically out of the aperture as long as the suitcase is brought into a transported state. When the wheel is in the extended position, another portion of the push-pull member extends out of the aperture so as to be contacted with the ground to pull the wheel automatically back into the aperture as long as the suitcase being in a stationary state.

Abstract: An adjustable roller assembly for supporting and leveling an appliance including a rail secured to the appliance and having a keyhole opening with a horizontal stationary base frame secured to the rail. A bracket having a bottom end is pivotally secured to the base frame and the top end of the bracket has a threaded nut spaced from the keyhole opening in the rail. A roller is rotatably secured to the bottom end of the bracket and is movable up and down relative to the stationary base frame in response to pivotal movement of the bracket. A horizontally disposed bolt having a head portion, a shank portion, a threaded portion, and an unthreaded terminal end portion is provided with the shank portion passing through the keyhole opening in the rail. The head portion is located on one side of the rail, and the threaded portion on the opposite side of the rail and threadingly engages the nut.

Abstract: A retractable wheel assembly for attachment to a boat or other objects to be transported over a hard surface. The assembly comprises a mounting bracket for mounting to the object to be transported. A wheel strut having foldable arm portions pivotally connected to the mounting bracket, a first lock assembly for locking the folded arm portions in a stowed or wheel deployable position and a second lock assembly for locking the arms in both a wheel stowed position and in a wheel deployed position.

Abstract: The present invention relates to a retractable undercarriage formed preferably by three supporting members, two of which are leg members and the third a wheel member. The support members are moved to either move the leg members into supporting position and retract the wheel member, or to move the leg members into the retracted position and the wheel member to the supporting position. When the leg members are in the retracted position and the wheel member in supporting position the end of the cabinet that would otherwise be supported by the foot members rest on further wheels so that the cabinet is completely supported on wheels and may be moved relatively freely about the floor.

Abstract: A caster to be mounted to a movable object, such as a hoop-shaped walking support for baby, a chair or the like and comprises a basic body turnably mounted at one end and provided at its opposite end with spaced apart axle supports for wheels, a stopper being mounted to the basic body and comprising a bearing portion received between the axle supports, a grounding surface adapted to contact the earth for stoppage of the caster the stopper including, an engaging part for setting the stopper above the lower margin of the wheels, a spring for urging the stopper downward, and a swing limiting projection for limiting the range of the swinging movement of the stopper.

Abstract: A retractable caster assembly for permanent attachment to a framework. The caster assembly, when retracted, allows the framework to rest on a surface in a first stable position and when extended, the assembly raises the framework above the surface in a second stable position. The caster assembly comprises a caster, a caster carrying structure, a structure for pivotably mounting the caster carrying structure to the framework and a lever pivotably mounted to the framework for engagement with the caster carrying structure to lower the caster into engagement with the surface in one stable position and raise the center so the lower periphery of the caster is above the lower surface of the framework in another stable position of the assembly.

Abstract: Apparatus for use both as a platform for drum-set performances and as a carrier for such a set. The apparatus consists of a rectangular bottom section with two or more side members hinged thereto for raising to a vertical position or lowering to a horizontal position. Castors are attached to at least two of such side members so that when they are raised, the castors extend downward from the bottom section, and when lowered, the castors are retracted above the bottom section. With the side members raised, the drum-set can be placed upon the bottom section, and the entire unit rolled, or carried by provided handles. With the side members lowered, the drum-set can be placed upon the bottom section and side members, and the apparatus used as a performance platform.

Abstract: A wheel unit for being mounted in a suitcase comprises a housing which, when installed, has a rectangular chamber that opens to the outside, within which a wheel is retracted under the force of a spring. The wheel is carried on a wheel bracket which is secured to a bearing block suitably movably retained in the housing. To place the same in use, the wheel is pulled against the force of the spring out of the housing, thus correspondingly moving the wheel bracket and bearing block. Assuming a horizontal wheel axis, the wheel and wheel bracket are turned 90.degree. about a vertical axis, and in this extended position, the wheel bracket is received in locking recesses in the housing.

Abstract: Wheel assembly for a container or suitcase comprising a wheel casing adapted to be secured in the container or suitcase and a wheel mounted in a rotatable wheel fork which is movably disposed in the wheel casing so that the wheel can be moved between a parking position in which only a small portion of the wheel projects beyond the wheel casing and a wheeling position outwardly of the casing, the wheel fork being rotatably mounted in a bearing block which is disposed in the wheel casing to be displaceable between an inner and an outer position in which latter position it can be pivoted in the plane of the wheel casing.

Abstract: This invention relates to an axle mounting including a plate having first and second interconnected slot portions provided therein. The first slot portion is longer than the second slot portion and the slot portions are interconnected into a substantially "j" configuration and are adapted so as to accommodate an axle movable therein. The arrangement is such that in use the plate is secured to a movable article with the slot portions substantially vertical such that transporting means connected to the axle are engageable and disengageable with an adjacent surface or floor as the axle is moved between the slots. In a further form of the invention an axle mounting includes a first plate and a second plate.

Abstract: Swivel castors being characterized by providing a supporting shaft at the lower part of the both-side supporting member of a metal fitting which is pivotally fixed to the bottom of a fixed vertical shaft, mounting said supporting shaft on one side-wall of a L-shaped supporting plate, inserting said supporting shaft into a slit which has an appropriate temporary stopping means on its both ends, pivotally supporting the L-shaped supporting plate by said supporting shaft, providing a supporting stand at the end of one side-wall of said L-shaped supporting plate, mounting a supporting shaft on the other side-wall of the L-shaped supporting plate so as to support a rotary wheel, and when the L-shaped supporting plate turns in such direction as the end of one side-wall of the plate is raised and the supporting stand fixed thereto is stopped by an internal stopping edge of the metal fitting and thus the rotary wheel alone comes into contact with the ground, letting the metal fitting and the rotary wheel turn freely