Abstract: Disclosed herein is a device for jointing poles of a tent. The device has a housing and a rotor body. In this case, the housing consists of a first pole insert hole for receiving a pole, a seat slit in which the rotor body is seated, and a locking recess formed on each sidewall of the seat slit. The rotor body consists of a longitudinal hinge hole receiving a hinge pin therein such that the rotor body seated in the seat slit of the housing is rotatably jointed to the housing. A locking lug is inserted into an associated locking recess of the housing to limit rotation of the rotor body. A second pole insert hole receives another pole. Furthermore, the device includes a unit for automatically releasing the rotor body from the housing. The automatic releasing unit consists of an elastic member mounted by a locking member to an end wall provided at the inside end of the seat slit.

Abstract: A playyard floor support frame includes a lock hub arranged to lie under a playyard floor, first and second floor support rails arranged to be mounted for movement in rail-receiving channels formed in the lock hub, and a base for receiving and elevating the lock hub above ground underlying the base. The frame further includes a lock controller mounted on the lock hub and configured to move the first and second floor support rails (at the option of a user) toward one another to establish a “locked” position of the frame and away from one another to establish an “unlocked” position of the frame.

Abstract: A collapsible goal frame for ball games has a frame composed by a vertical n-shaped frame, an upper horizontal n-shaped frame, a lower horizontal n-shaped frame and two vertical supporting poles; in particular, connecting tubes are contraposed between the upper horizontal n-shaped frame and the lower horizontal n-shaped frame; the present invention is characterized that two sides of the vertical n-shaped frame are respectively disposed with a 180° bendable joint; on two sides of the upper horizontal n-shaped frame and the lower horizontal n-shaped frame are respectively disposed with a 90° bendable joint; after the supporting pole is detached, the bendable joints of the upper horizontal n-shaped frame and the lower horizontal n-shaped frame are folded toward each other; then the bendable joints on two sides at the center of the vertical n-shaped frame are bent forwardly and downwardly to form a collapsed structure slightly in a W-shape.

Abstract: A folding ski consists in the possibility of folding the ski itself, by means of a mechanical system contained within it and forming part, to all effects, of the construction of the ski. The innovative mechanism makes it possible to reduce the bulk of the equipment and makes it easier to transport. In addition, not only does it maintain the physical, mechanical and dynamic characteristics required for practicing the various sporting disciplines, but it offers better performance and safety qualities than a traditional ski.

Abstract: A retraction control device especially is employed to a baby joyful bed for controlling the retraction processes of the baby joyful bed. The retraction control device includes a shell, a pad, two clips, a plate and an auxiliary stand. When the user would like to retract the baby joyful bed, the user is only needed to pull up the pad. The pad will move the clips and therefore move the plate. In this case, the four bottoms will be released, rotated and retracted downwardly. Moreover, the dynamic forces are delivered via the inclined and curved surfaces of the retraction control device.

Abstract: A hinge coupling and a lock for connecting a stationary handrail to a gate arm for a gate. The gate in closed position retains the structural integrity and peripheral profile of the handrail. The hinge coupling consist of a fixed connector and a mobile connector, both pivotally connected to a middle link by pins. The components of the hinge coupling pivot about the pins, enabling the gate arm to pivot through a 180° angle. One hinge connector is inserted and secured into an open end of the stationary handrail. The other connector is inserted and secured into an open end of the gate arm. The lock consists of two mating active and passive components that are fastened to respective terminal ends of the handrail and gate arm. The lock components are provided with a manually releasable latch. All components in the closed position of the gate compactly fit together and are shaped to provide peripheral continuity.

Abstract: A link which facilitates forming a collapsible structure which has a shell at least one attachable portion and at least one socket portion. The socket portion has a flexible, preferably twistable, member which connects to a frame member. The frame member moves into and out of the socket portion of the shell to erect and collapse the structure. The walls of the socket portion may be formed a constant distance apart for at least a portion of the circumference of the shell to permit fabricating the shell from non-resilient material. Caps, detents and protrusions can be used to secure the member to the shell in the erect position by positioning the socket and attachable portions at desired angular relationships and placing the socket portions at any desired position in the circumference of the shell, virtually any collapsible structure can be configured.

Abstract: An articulating strut capable of assuming an extended in-line and a folded configuration with rigid cylindrical tubing having proximate ends configured to fixably receive an offset hinged insert that provides for folding and unfolding of said strut. When fully unfolded the strut acts as a single rigid structural support member held in the locked position by a bidirectional slidable locking sleeve. The hinged insert has shapes and curved surfaces which together with offset hinge pins tends to expel the sleeve from a pinch possibility at the folding joint. Convex and concave linkage shapes together with rounded surfaces which bear against a rounded sleeve end avoids sleeve pinch.

Abstract: A 180-degree folding support joint includes a pair of joint members each including an outer wall and an inner wall and defining an engaging slot therebetween for disposing the inner wall of the other joint member therein, wherein a frame leg is adapted to affix on each joint member in such a manner that in a folded condition, each frame leg is adapted for pivotally rotating 180 degrees from each other in order to pivotally fold the frame legs together, and in an unfolded condition, each joint member is biased against each other in order to lock up the rotation of the joint members, so as to align the frame legs with each other.

Abstract: In a mechanism for locking curtains and the like, a sleeve rotates about a relative axis and is fastened to a roll, in coaxial relation therewith. A curtain is rolled up on the roll. A barrel features at least one radial housing opening outside of the barrel and enters freely the sleeve. The mechanism includes also one spring introduced freely in each radial housing and pushing a cylinder or a sphere against an inner surface of the sleeve.

Abstract: A joint is provided for unfolding systems, e.g. for satellite solar generators that permits sufficiently large unfolding torque, low weight and small dimensions. A drive on one joint half acts on a small pulley to wind a cord on it. The other end of the cord is tautly connected to a large pulley that rotates on the hinge pin and is fixed to the second joint half. The large pulley rotates in the opposite direction of the small pulley when the cord is wound so that the second joint half folds away from the first joint half on the hinge pin into an unfolded state and is held In this state by a stop against the tension of the cord. The joint is used, for example, for unfolding joints for satellite solar generators that consist of two joint halves, a hinge pin and a drive.

Abstract: An apparatus for a pop-up display structure that provides a hub structure that is divided into two sections that are held together by a thumbscrew. The two sections define internal channels in the hub for capturing guide pins attached to the tubes such that the tubes pivot about the guide pins and rotate about the hub through slots in the hub. The thumbscrew provides for removal of tubes from the hub structure without the use of tools and therefore provides for changes on the fly for reconfiguring the structure or for replacing broken tubes. The thumbscrew also provides a mounting structure for the channel bar that attaches to the pop-up structure. The channel bar is capable of folding into three sections and is capable of folding compactly without regard to the sequence of the folds.

Abstract: A control device for folding movement of a stroller includes a safety button, a control button, two upper locking members and two lower locking members. The safety button can move left and right along an elongated opening of a housing member connected to the handle. The control button can move up and down through a lower hole of the housing, and has two pivotal bars having upper holes pivoted to a pivotal rod passing through upright elongated holes of lateral protrusions of the control button. When the safety button is pushed sideways to disengage the tops of the lateral protrusions, the control button can be pushed up for inner bottom curved surface to force the pivotal bars to pivot towards a respective edge of the control button. Steel ropes connected to the lower ends of the bars are pulled by the bars to lift upper locking members, which are provided to engage lower locking members pivoted to the frame of the stroller.

Abstract: A control device for folding movement of a stroller includes a safety button, a control button, two upper locking members and two lower locking members. The safety button can move left and right along an elongated opening of a housing member connected to the handle. The control button can move up and down through a lower hole of the housing, and has two pivotal bars having upper holes pivoted to a pivotal rod passing through upright elongated holes of lateral protrusions of the control button. When the safety button is pushed sideways to disengage the tops of the lateral protrusions, the control button can be pushed up for inner bottom curved surface to force the pivotal bars to pivot towards a respective edge of the control button. Steel ropes connected to the lower ends of the bars are pulled by the bars to lift upper locking members, which are provided to engage lower locking members pivoted to the frame of the stroller.

Abstract: A disengageable self-locking pivotal bracket device with a body member having a first and second surface. The device includes an axial/fastener and disengageable locking element for pivotally and releaseably locking the device into and out of at least one engaged position. The present invention can be used as foldable, pivotal connecting element that can connect two member; for example a fishnet and handle, or two sections of a cane.

Abstract: A collapsible stroller having simplified components is provided. Each sub-frame is substantially a triangle having a latch mounted on a third side and a cooperating mechanism. The third side tube is foldable at the latch, thus causing a second side tube to fold toward the first side tube. It is possible to obtain a flat collapsed stroller by a simple collapsing operation.

Abstract: A clamping device for two telescopic tubes (1, 2) comprises a ring (7) which is longitudinally split and thus defines a longitudinal spacing (8) located in a plane intersecting the ring (7) longitudinally, said ring (7) being extended towards the outside by two wings (9, 11) facing each other on either side of the longitudinal spacing (8), at least one rod forming an axis (A) arranged transversely in relation to the plane and passing through the two wings (9, 11), and an arm (12) which is fixed and pivots in relation to the rod forming an axis (A), so as to make possible clamping of the ring (7) by reduction of the longitudinal spacing (8), the two wings (9, 11) being brought towards one another.

Abstract: A rod bending mechanism is disposed between a first segment and a second segment of the rod and is formed of a pivoting plate extending from one end of the first segment, a pivoting seat having two side plates extending from one end of the second segment, and at least one locating member disposed on one of the two side plates. The pivoting plate is pivoted with the pivoting seat such that the pivoting plate and the pivoting seat are located by the locating member.

Abstract: A goal assembly includes two lengthwise assemblies and two L-shaped assemblies which are pivotally connected between the two lengthwise assemblies which are parallel with each other on different horizontal planes. Each lengthwise assembly has two sections pivotally connected by a connection member. Each L-shaped assembly includes a post and a widthwise bar pivotally connected with each other. A net is connected to the two lengthwise assemblies and the two L-shaped assemblies.

Abstract: A joint for a playen has a main base, two plate hooks, two wing bases and a press block. The wing bases are pivoted to the main base, and each connected to a support rod of the playen. The plate hooks are fixed to the press block, and each has two end barbs. The press block is movably connected to the main base with a guide pin passed through two aligned shaped holes of the main base; the guide pin is also passed through a long vertical hole of the press block. The joint is spread at an unfolded position with locating pins of the wing bases engaging the barbs of the plate hooks. To fold the joint, the wing bases is pivoted inwardly of the main base, and the press block is pushed up to disengage the locating pins from the barbs; the guide pin can move in the shaped hole sideways to permit the press block to move sideways, helping the barbs separate from the locating pins of the wing bases easily.

Abstract: A joint for collapsible rails of a playpen includes a joint pivoting the inner ends of a pair of identical parts of the rail. The parts each has a pair of retractable projection of a V-shaped spring plate releasibly engaged into an aligned thru hole of the joint for the enabling or unabling the rotations of the identical parts of the rail. A slide is disposed into the joint central the reduced ends of the V-shaped spring plate to permit the engagement and/or disengagement of the above projection with aligned thru hole in order to readily provide collapsing or flattening the playpen upon only one application of the slide.

Abstract: An articulating strut capable of assuming an extended in-line and a folded configuration with rigid cylindrical tubing having proximate ends configured to fixably receive an offset hinged insert that provides for folding and unfolding of said strut. When fully unfolded the strut acts as a single rigid structural support member held in the locked position by a bi-directional slidable locking sleeve. The hinged insert has full faced load bearing surfaces which together with offset hinge pins tends to direct the strut members under compression to assume an over-center locked position. Such struts have particular application as bimini or dodger marine coverings that fold or become taut without tensioning straps or supporting tension in the covering material itself.

Abstract: A connector assembly that interconnects opposed ends of two walk boards utilized in a scaffolding system. Each connector includes a first plate having a plurality of connector shafts extending therefrom. The connector shafts extend through openings or sleeves formed in the end portions of the respective walk boards. Opposite the first plate is a second plate that includes openings through which the connector shafts extend. Retainers are secured to the respective connector shafts for the purpose of retaining the second plate on the connector shafts while the connector shafts extend through the openings within the walk boards. An interconnecting shaft is extended through a series of openings within the first and second plates of each connector. This interconnecting shaft effectively connects the connectors together and thereby connects the opposed end portions of the walk boards together.

Abstract: A folding collapsible rod member connecting structure includes a first tubular rod member, a second tubular rod member, a barrel fixedly mounted on the first tubular rod member, the barrel having a locating block protruded from the periphery thereof, a coupling block fixedly fastened to one end of the second tubular rod member, the coupling block having a protruding rod pivoted to the locating block, a locating sleeve coupled to the first tubular rod member by a slip joint and moved between a first position where the locating sleeve has a part sleeved onto the first tubular rod member and a part sleeved onto the locating block to stop the first tubular rod member from turning relative to the second tubular rod member and a second position where the locating sleeve is disengaged from the locating block for enabling the first tubular rod member to be turned relative to the second tubular rod member, and an elastic band connected between the coupling block and a pin at the locating sleeve and adapted to pull the

Abstract: A play yard having a collapsible top assembly and a collapsible bottom assembly, each assembly connected to at least three spaced vertical posts. The bottom assembly includes a collapsible subassembly. Pairs of post connecting members pivotally connect each vertical post to the subassembly forming truss segments. The truss segments and subassembly form a truss. Stabilizer feet are connected to the subassembly. The truss vertical posts and stabilizer feet serve to support and stabilize the play yard when it is in an erected position.

Abstract: A seismic brace for fastening to a support rod at one end and a structural portion of a building, on the other end. The brace is attachable to the support rod without disconnecting it. The brace arm part is bent at an angle of 45° to form a base bracket that connects to the support rod. A locking bracket is hinged to the brace arm to overlay the base bracket. Both the base bracket and locking bracket have a slot extending from an edge towards the middle, the slots are arranged so that they form an aperture when the locking bracket overlays the base bracket part of the brace arm to completely enclose the support rod.

Abstract: A pivot connector for a stroller frame includes a mounting seat formed with elongated slots, a pivot plate disposed in and pivoted to the mounting seat, an operating member straddling over the mounting seat, a locking pin mounted on the operating member and extending through the elongated slots, and a biasing spring for biasing the operating member away from the mounting seat. The pivot plate is formed with a locking groove that can be registered selectively with the elongated slots when the pivot plate is pivoted. The locking pin is movable to rear slot portions of the elongated slots when the operating member is moved toward the mounting seat, wherein the locking pin is extendible into and out of the locking groove.

Abstract: A play yard having a collapsible top assembly and a collapsible bottom assembly, each assembly connected to at least three spaced vertical posts. The bottom assembly includes a collapsible subassembly. Pairs of post connecting members pivotally connect each vertical post to the subassembly forming truss segments. The truss segments and subassembly form a truss. Stabilizer feet are connected to the subassembly. The truss vertical posts and stabilizer feet serve to support and stabilize the play yard when it is in an erected position.

Abstract: A sports pole includes two to four elongated tubular members permanently joined together with a first of the tubular members or poles pivotably joined near one end to a second of the poles. A third of the poles may be telescopically received within or about the first pole and slidingly movable therealong between retracted and extended positions. There is a U-shaped spring and pin arrangement for locking the third tubular member in the extended position. A fourth of the poles may be telescopically received within or about the second pole and be similarly slidingly movable therealong between retracted and extended positions. Again, there is a U-shaped spring and pin arrangement for locking the fourth tubular member in the extended position. The first and second tubular members are pivotably joined by a hinge mechanism which allows selective pivotal motion between generally coaxial and generally parallel positions.

Abstract: An improved joint for using on a baby stroller, being structurally provided with a twofold engagement effect, is provided. Whereby, when the baby stroller is stretched or collapsed, the joint can be in engagement and latching state without providing of additional engaging members, and reducing of cost and convenience of using can be achieved. The joint is comprised mainly of a first connecting member provided on an upper bracing rod and a second connecting member provided on a lower bracing rod. Wherein, the first connecting member is provided at the rear side thereof with a receiving chamber for receiving a pulling component. The pulling component has an engaging piece being able to extend into an upper pivotal connecting portion on the bottom of the first connecting member by means of a spring. The second connecting member is provided in a lower pivotal connecting portion on the top thereof with a first engaging groove and a second engaging groove.

Abstract: A foldable mechanism for a playpen includes a connection element having substantially an U-shaped cross section with two open side faces, one front face, and one rear face, the front and rear faces being provided with a U-shaped cutout and a plurality of first openings and a plurality of second openings; a press-down block having two sides each with a side groove having a narrow portion and a enlarged open end, front and rear faces each having a groove with two closed ends, an elongated through hole passing through the front and rear faces, and a hollow center with one closed end for receiving a spring, the press-down block being attached to the connection element by a first screw passing through the through hole and pressed against the spring, such that the press-down block can be pressed down, or biased, with respect to the connection element by an external force and moved back by the spring force; and a pair of hollow rods each having therein a U-shaped reed spring with protrusions on both outer faces of t

Abstract: A joint having a socket portion facilitates forming a collapsible structure. The joints can be formed as corner joints or straight joints and any number of members may be connected to the joints. The socket portion of the joint accommodates a movable member which has multiple degrees of motion. The movable member is connected with a threaded or otherwise twistable connection to the rod of a heim joint which rotates on a roll pin. The movable portion moves in and out of the socket portion to erect and collapse the structure. Frame members are attached to the fixed and movable portions of the joint. A cover plate on the joint assists in aligning the movable portion into the proper position so that the erect structure is stable.

Abstract: A joint of a foldable bed for babies comprises a main body, a pressing block and two supporting members. The main body has two side plates connected by an intermediate curved portion. The pressing block is slidably fitted in the main body. The supporting members are pivotted to the main body, and each separably engage a respective side trench of the pressing block to be located at a first position. The pressing block is biased downwards by a spring. Two supporting rods of the frame of the folable bed are pivotted to the main body. The supporting rods have inner ends contact and engage the supporting members when same are located at the first position. To fold the bed, the pressing block is pressed upwards to disengage same from the supporting members, the supporting members being pivotted on the main body. Thus, the supporting rods of the frame can be pivotted on the main body to fold the bed.

Abstract: The invention is a deployable hinge assembly. In detail the hinge assembly includes first and second hinge members, and a pivot system for pivotally connecting the first and second hinge members together such that the second hinge member is rotatable from an over lapping position with the first hinge member to an inline position therewith. An over center latch mechanism is coupled to the first and second hinge members for moving the second hinge member from the over lapping position to the inline position and locking the second hinge member in the inline position upon activation. A spring is used for activating the over center latch mechanism. Finally, an attenuation device is incorporated for absorbing forces generated by the spring the second hinge member approaches the said position.

Abstract: A fold latch assembly is provided for use with a collapsible stroller. The fold latch assembly includes a latch slidably connected to an arm of the collapsible stroller, a housing pivotally attached to the latch and slidably attached to the rear leg of the stroller, and a mount fixedly attached to rear leg of the stroller. The latch operates to releasably secure the collapsible stroller in an operative position and may be released to allow the stroller to be biased into a collapsed position.

Abstract: A pivotal device for connected two parts of a foldable bicycle includes two boards each are connected to a part of the bicycle and are pivotally connected with each other. A clutch device is connected between the two boards and includes two pins extending through the two side plates of each of the two boards. Each of the pins are movable to disengage from one of the two boards to allow the two boards to be pivoted away from each other. A secure device is connected to the clutch device so as to secure the pins of the clutch device in position such that the two boards are not pivoted away from each other.

Abstract: A conventionally shaped skateboard is divided into three sections, one section measures at about half the length of the skateboard, a middle section measures at approximately the height of the truck and wheel assembly, and a third section constitutes the remaining length of the skateboard. The three sections are hinged together to form a folding skateboard such that when the skateboard is folded, the trucks and wheels of the skateboard are adjacent each other in the interior of the J-shaped configuration of the folded skateboard. The sections are locked in an extended, aligned orientation to form a usable skateboard in three embodiments by clips which fit onto the side edges of the skateboard deck and in a fourth embodiment by rods which fit into and slide within cylindrical grooves formed on the bottom of the skateboard deck.

Abstract: The collapsible sheet support apparatus comprises a horizontal center beam to which a plurality of arms, which are pivotable relative to the center beam, are engaged. At least one pair of bottom arms creates legs for supporting the center beam. At least a further pair of top arms may be engaged to the center beam to allow engagement of a sheet larger than can be accommodated by the center beam to the apparatus.

Abstract: A baby stroller for transporting an infant over flat, rough, or uneven terrain at speeds faster than normal walking speed is disclosed. This baby stroller can be folded to make it easier to stow and transport. The folding mechanism, a unique feature of the design, enables the user to fold and unfold the stroller with one hand. Other features of the stroller include a quick release mechanism for the rear wheels, a foot-activated parking brake, and a canopy deployment mechanism.

Abstract: A trailer of the type for securing to and following a bicycle. The trailer includes a frame, a wheel rotatably mounted on the frame, and an extension member having first and second ends. The first end is hingedly connected to the frame such that the extension member is selectively positionable between an extended position wherein the extension member extends outwardly from the frame and a folded position wherein the extension member is disposed adjacent the frame for compactness of storage and transport.

Abstract: A foldable joint for a playpen comprises a seat having two spaced apart side plates one of which defines holes respectively in both end and an integral connecting plate; two tubes respectively pivotally mounted on the end of the seat by a pivot, each having a first aperture and second aperture defined therein; and two U-shaped trips respectively disposed in the tubes, each having a first lug being inserted through the first aperture of the tube and the hole of the side plate, and a second lug being inserted through the second aperture of the tube; whereby, the tubes can be folded upward when the first lugs are pressed inward.

Abstract: A connecting device for a stroller frame includes a pivot seat for connecting pivotally a connecting section of a handle portion to a leg portion of the stroller frame, a locking seat for locking releasably the connecting section to the leg portion, an operating member operable to move the locking seat for unlocking the connecting section from the leg portion, a linking rod interconnecting the operating member and the locking seat, and a biasing unit for biasing the locking seat to a locking position. The biasing unit is received in the connecting section, and includes an elongated spring mounting seat which has a bottom end secured to the connecting section, and a surrounding wall formed with a spring chamber and an elongated second slot communicated with the spring chamber and registered with a first slot in the connecting section. The biasing unit further includes a coiled compression spring retained in the spring chamber.

Abstract: A folding, structure for a collapsible stroller of the present invention has a pair of pivotal connectors, a pushing handle, two front support rods, two rear support rods, a pair connecting holder blocks, a chair back frame and two connecting rods. The pivotal connectors pivot the pushing handle, the front support rods and the rear support rods. The connecting rods with one end respectively pivot to the pushing handle and the front support rods and with the other end pivot to the connecting holder blocks. The chair back frame also pivots to the connecting holder blocks. Each of the rear support rods has an obstructing protrusion and pivots the connecting holder block. Each connecting holder block has a press block, the first press bar, the second press bar, a hole, the first sloped guide surface and the second sloped guide surface.

Abstract: An articulated broom, comprising a joint located between a base having an attachment plane for the bristles and the end of the handle, said joint comprising a pin connected to said base and adapted to allow the rotation of a hub at the end of the handle, said hub being attached to said pin so as to provide a certain amount of friction therebetween; abutment elements of the hub being provided in a first end position in which the handle is perpendicular to the bristle attachment plane, and a second end position.

Abstract: A foldable baby stroller includes a main frame composed of a first section and a second section which is connected with each other by two retaining members. Two connection members are respectively pivotally connected to the first section by two position pins and are respectively secured to the second section. A U-shaped rear frame has two separating tubes and which are respectively connected to the two sections of the main frame. The retaining members are detachably connected to the second section so that when folding the stroller, the first section is pivoted to overlap onto the second section by disconnecting the retaining members from the second section, and the first section disconnecting from the separating tubes.

Abstract: A collapsible tricycle frame device comprises a generally U-shaped handle, first and second push bars connected to two opposite ends of the generally U-shaped handle respectively, a first seat receiving a lower end of the first push bar, and a second seat receiving a lower end of the second push bar. The first seat receives an upper end of a first front support rod and an upper end of a first rear support rod. The second seat receives an upper end of a second front support rod and an upper end of a second rear support rod. A rear wheel support device receives a lower end of the first rear support rod and a lower end of the second rear support rod. A front wheel support device receives a lower end of the first front support rod and a lower end of the second front support rod. First and second base rods are disposed between the front wheel support device and the rear wheel support device.

Abstract: A foldable rod linkage for connecting a handgrip to a front wheel of a foldable stroller includes a lower mount member having front lateral walls extending rearwardly from two ends of an upright front wall, an upward abutment wall between the left and right front lateral walls, an upright bore for receiving an upper end of a front rod, and rear lateral walls extending respectively from the front lateral walls. An upper slide body has a through-hole to permit extension of a handle rod such that a lower end of the latter is pivoted on the rear lateral walls, and a downward abutment wall to mate with the upward abutment wall when the linkage is in an unfolded position. An operating device is mounted movably on the handgrip, and includes a pull rod having a lower end mounted on the slide body such that upward pulling of the pull rod will result in disengagement of the slide body from the lower mount member.

Abstract: A microphone stand assembly includes a leg base that has a number of legs each having an end pivotally connected to a lower end thereof. A post includes a lower tube having a lower end connected to the leg base, an upper tube slidably received in the lower tube, and a first clamping sleeve for holding the upper tube in place relative to the lower tube. A pivotal base includes a seat secured to an upper end of the upper tube and including a first through hole therein. The pivotal base further includes a connecting block including a section pivotally connected to the seat and a second through hole defined therein. A holder rod is slidably extended through the first through hole, the second through hole, and the upper tube. The holder rod is removable from the first through hole and the upper tube. A second clamping sleeve is provided to hold the holder rod in place relative to the upper end of the connecting block. A microphone holder is secured to the upper end of the holder rod.

Abstract: A foldable joint of a playpen comprises a U-shaped body having an opening defined in a side face thereof; two linkages respectively pivotally mounted on each end of the body by pivots each having a plug forming a plane on the bottom of the plug provided in the end mounted on the body; and a first spring disposed between the plug and the pivot; a locking means of which the front portion corresponds to the opening, movably mounted in the body by rivets having two wings respectively formed on both sides of the locking means; and a second spring disposed between the back portion of the locking means and the inner wall of the body.

Abstract: A playpen includes at least one pivot bracket including a first sidewall having two ends each defining a first through hole. At least one release bracket includes a first sidewall having two ends each defining a second through hole. A pressing member movably received in the release bracket includes two pressing legs. Two retaining legs are each formed on the second sidewall of the release bracket, and each is formed with a retaining hook. At least two armrails each has one end pivotally mounted in the pivot bracket and defining a third through hole. At least two V-shaped biasing members are each mounted in a respective armrail and each has its distal end abutting the pressing leg, and a stub extending through the third through hole, the first through hole and the second through hole.