Abstract: A method for determining a consistency coefficient of a power-law cement grout includes: determining a water-cement ratio of the power-law cement grout; according to engineering practice requirements, determining a time required to determine the consistency coefficient of the power-law cement grout; and obtaining the consistency coefficient of the power-law cement grout. The method is accurate and reliable, requires less calculation, etc.; and has very high practical value and popularization value in environmental protection and ecological restoration.

Abstract: A foldable cart frame has a folding mechanism, a connecting seat, two rear legs, and a handle unit. The folding mechanism has a base seat, at least one guiding rod connected to the base seat, a sliding seat slidably disposed on the at least one guiding rod, and a linkage assembly moveably connected to the sliding seat. The connecting seat is movably disposed on the folding mechanism. The two rear legs are disposed on the base seat. The handle unit is moveably inserted through the base seat, is fixedly connected to the sliding seat, and can drive the sliding seat and the connecting seat to move. The two rear legs are driven by the linkage assembly. The foldable cart frame can be folded and expanded conveniently and quickly. The connecting seat and its connecting components can form a stable supporting structure after expanding.

Abstract: A foldable enclosure apparatus has a hub device, four lower assemblies, four upper assemblies, and at least one locking device. The lower assemblies are foldable and are pivotally mounted around the hub device. Each upper assembly is foldable and is mounted between two adjacent lower assemblies of the four lower assemblies. The at least one locking device is mounted with the corresponding lower assembly and the corresponding upper assembly for locking or unlocking the upper assemblies.

Abstract: A foldable cart frame has a folding mechanism, a connecting seat, two rear legs, and a handle unit. The folding mechanism has a base seat, at least one guiding rod connected to the base seat, a sliding seat slidably disposed on the at least one guiding rod, and a linkage assembly moveably connected to the sliding seat. The connecting seat is movably disposed on the folding mechanism. The two rear legs are disposed on the base seat. The handle unit is moveably inserted through the base seat, is fixedly connected to the sliding seat, and can drive the sliding seat and the connecting seat to move. The two rear legs are driven by the linkage assembly. The foldable cart frame can be folded and expanded conveniently and quickly. The connecting seat and its connecting components can form a stable supporting structure after expanding.

Abstract: A locking device has two locking mechanisms, a connecting mechanism, and a pedal. Each locking mechanism has a wheel base, a cap, a recoil device, and a locking assembly. The wheel base has a mounting hole having multiple guiding ribs. The recoil device has a recoil member and a recoil spring. The locking assembly is mounted in the wheel base and has a pushing rod, a pushed rod, and a pushing spring. The pushing rod has a ratcheted end. The pushed rod is selectively engaged with and disengaged from the guiding ribs and has a ratcheted end selectively engaged with and disengaged from the ratcheted end of the pushing rod. The pedal is mounted securely on the cap of one of the two locking mechanisms that is defined as a driving locking mechanism.

Abstract: A locking device has two locking mechanisms, a connecting mechanism, and a pedal. Each locking mechanism has a wheel base, a cap, a recoil device, and a locking assembly. The wheel base has a mounting hole having multiple guiding ribs. The recoil device has a recoil member and a recoil spring. The locking assembly is mounted in the wheel base and has a pushing rod, a pushed rod, and a pushing spring. The pushing rod has a ratcheted end. The pushed rod is selectively engaged with and disengaged from the guiding ribs and has a ratcheted end selectively engaged with and disengaged from the ratcheted end of the pushing rod. The pedal is mounted securely on the cap of one of the two locking mechanisms that is defined as a driving locking mechanism.

Abstract: A stroller frame has a body, two front wheel assemblies, a seat supporting mechanism, and a rear wheel folding mechanism. The two front wheel assemblies are respectively and pivotally disposed on the body. The seat supporting mechanism is moveably disposed below a seat plate of the body. The rear wheel folding mechanism is disposed on a rear side of the body and has two rear wheel assemblies and two linkage assemblies. The two rear wheel assemblies are moveably disposed on a first transverse rod of the body. The two linkage assemblies are respectively disposed on two ends of a second transverse rod of the body. When the stroller frame is folded, two rear wheels of the two rear wheel assemblies move between two front wheels of the two front wheel assemblies to decrease the overall width and volume of the folded stroller frame.

Abstract: A foldable enclosure apparatus having a locking device for a baby bed has a hub device, four lower assemblies, four upper assemblies, and at least one locking device. The lower assemblies are foldable and are pivotally mounted around the hub device. Each upper assembly is foldable and is mounted between two adjacent lower assemblies of the four lower assemblies. The at least one locking device is mounted with the corresponding lower assembly and the corresponding upper assembly for locking or unlocking the upper assemblies to enhance the safety of the foldable enclosure apparatus.

Abstract: A foldable enclosure apparatus for a baby bed has a hub device, a supporting assembly and four linking devices. The hub device has four racks. The supporting assembly is disposed around the hub device. Each linking device is connected with the hub device and the supporting assembly. Each linking device has a first linking assembly and a second linking assembly. The hub device is pulled and the racks are moved upwardly. The first linking assemblies and the supporting assembly are moved toward the hub device. The installment of the first linking assemblies and the second linking assemblies has the effects of linkage and balance. Therefore, the foldable enclosure apparatus for a baby bed can be easily, smoothly and steadily folded and spread.

Abstract: A foldable enclosure apparatus for a baby bed has a hub device, a supporting assembly and four linking devices. The hub device has four racks. The supporting assembly is disposed around the hub device. Each linking device is connected with the hub device and the supporting assembly. Each linking device has a first linking assembly and a second linking assembly. The hub device is pulled and the racks are moved upwardly. The first linking assemblies and the supporting assembly are moved toward the hub device. The installment of the first linking assemblies and the second linking assemblies has the effects of linkage and balance. Therefore, the foldable enclosure apparatus for a baby bed can be easily, smoothly and steadily folded and spread.

Abstract: A convertible tandem stroller frame is capable of locking in a tandem stroller mode for installing a second seat thereby concurrently transporting two occupants, and capable of converting said mode into a single seat mode for transporting single occupant by simply manipulating a release actuator at a front portion of the convertible tandem stroller frame. The convertible tandem stroller frame may include a front rack, a rear rack, at least a longitudinal telescopic mechanism and at least a locking mechanism. The front rack and the rear rack are lockably and adjustably connected by the longitudinal telescopic mechanism, so as to be extended into the tandem stroller mode and be retracted into the single seat mode. The locking mechanism is associated with the release actuator for locking and un-locking the longitudinal telescopic mechanism by manipulating in front of the convertible tandem stroller frame.

Abstract: A convertible tandem stroller frame is capable of locking in a tandem stroller mode for installing a second seat thereby concurrently transporting two occupants, and capable of converting said mode into a single seat mode for transporting single occupant by simply manipulating a release actuator at a front portion of the convertible tandem stroller frame. The convertible tandem stroller frame may include a front rack, a rear rack, at least a longitudinal telescopic mechanism and at least a locking mechanism. The front rack and the rear rack are lockably and adjustably connected by the longitudinal telescopic mechanism, so as to be extended into the tandem stroller mode and be retracted into the single seat mode. The locking mechanism is associated with the release actuator for locking and un-locking the longitudinal telescopic mechanism by manipulating in front of the convertible tandem stroller frame.

Abstract: A child safety seat with a transverse engaging base is provided. The child safety seat has an engagement portion for engaging with the base in transverse direction. The base is formed with at least a transverse engaging space which includes a first upper abutting face, a second abutting face and a support face so as to receive and retain the child safety seat therebetween. A positioning element is operatively mounted between the child safety seat and the base, so as to releasably lock the child safety seat within the transverse engaging space.

Abstract: A pivotal base is adapted for detachably connecting a canopy frame to a stroller. The pivotal base comprises a connector, a first pivotal connector and a second pivotal connector. Wherein the connector of the pivotal base has a plug for connecting with the stroller, and a snap wall formed with a toothed inner surface; the first pivotal connector has a first connecting portion for connecting with a canopy brace, and a toothed portion pivotally inserted and snapped by the toothed inner surface in a plurality of fixed angle positions; and the second pivotal connector has a second connecting portion for connecting with another canopy brace, and a toothed portion pivotally inserted and snapped by the toothed inner surface in a plurality of fixed angle positions.

Abstract: A baby stroller comprises a collapsible wheeled frame, a swivelable seat, and a swivelable connector connected between the collapsible wheeled frame and the swivelable seat. The swivelable connector is pivotally connected atop the collapsible wheeled frame and has a locking mechanism for fixing the swivelable connector in a plurality of predetermined directions. The swivelable seat has a pair of push bars connected to both sides thereof through a pair of lockable swivel base, wherein the lockable swivel base can be used to lock the push bars either forwardly or backwardly and comprises a driving mechanism for unlocking the locking mechanism so as to permit the swivelable connector to rotate relative to the collapsible wheeled frame 1 thereby to change the direction of the swivelable seat.

Abstract: A child safety seat with a transverse engaging base is provided. The child safety seat has an engagement portion for engaging with the base in transverse direction. The base is formed with at least a transverse engaging space which includes a first upper abutting face, a second abutting face and a support face so as to receive and retain the child safety seat therebetween. A positioning element is operatively mounted between the child safety seat and the base, so as to releasably lock the child safety seat within the transverse engaging space.

Abstract: A control device is pivotally connected with a lower frame assembly of a playpen. The control device has a pair of sleeves, a positioner, a resilient element, a push-button, a driving element, a string. Each of the pair of sleeves has a locking groove with a space for movably receiving the positioner and the resilient element. The positioner can be engaged with the locking groove to inhibit rotation between the pair of sleeves. The resilient element is positioned at one side of the positioner to bias the positioner, thereby keeping the playpen in an unfolded position. A push-button may be pushed to force the positioner to move against the biasing of the resilient element and enter one side of the pair of sleeves. The driving element is pivoted to one of the pair of sleeves to push the push-button. A user can rotate the driving element to push the push-button by pulling a string which is connected to one end of the driving element.

Abstract: A carrier basket has a bracket body, a pair of front basket-holding rods, a pair of positioning elements, and a rear basket-holding rod. The pair of front basket-holding rods is connected to both sides of the stroller frame, respectively. Each of the pair of positioning elements has a connecting portion for connecting with rear end of the front basket-holding rods, a pivotal portion for connecting with the rear basket-holding rod, and a pair of snap edges for holding the rear basket-holding rod in a first position. When the rear basket-holding rod is rotated in a direction against the snap edges, the snap edges can be pressed to open wider, thereby releasing the rear basket-holding rod from the first position and opening the rear end of the bracket.