In general, the present invention provides a platform truck. More specifically, the present invention provides a platform truck comprised of a base member, a handle, a pair of swivel caster wheels depending from the bottom surface back end of the base member, a pair of swivel-lock caster wheels depending from the bottom surface front end of the base member, and a user-activated actuator assembly carried on the bottom surface of the base allowing the front swivel-lock casters to be switched between a unidirectional position and swivelable position to more easily negotiate tight turns and doorways is disclosed. Also included is a handle that is stowable within the base portion of the platform truck so that the platform truck may include one or two handles, whereby a handle may be included on one or both ends of the platform truck.

In general, the present invention provides a platform truck. More specifically, the present invention provides a platform truck comprised of a base member, a handle, a pair of swivel caster wheels depending from the bottom surface back end of the base member, a pair of swivel-lock caster wheels depending from the bottom surface front end of the base member, and a user-activated actuator assembly carried on the bottom surface of the base allowing the front swivel-lock casters to be switched between a unidirectional position and swivelable position to more easily negotiate tight turns and doorways is disclosed. Also included is a handle that is stowable within the base portion of the platform truck so that the platform truck may include one or two handles, whereby a handle may be included on one or both ends of the platform truck.

A wheeled carrying apparatus includes a handle frame rotatable relative to a standing frame between a first and a second position, a wheel mount pivotally connected with the standing frame, a wheel mount latch adapted to lock and unlock the wheel mount with respect to the standing frame, an actuating assembly coupling the wheel mount latch to the handle frame so that the wheel mount latch is movable to engage and disengage the wheel mount in response to a rotation of the handle frame, and a release mechanism including an operating part that is coupled to the actuating assembly via a cable assembly, the operating part being operable to cause the wheel mount latch to disengage from the wheel mount when the handle frame is in the first position.

A wheeled carrying apparatus includes a standing frame, a handle frame, a wheel mount, a locking assembly and a release mechanism. The handle frame is rotatable between a first and a second position. The wheel mount carries a wheel and is rotatable relative to the standing frame for changing an orientation of the wheel axis. The locking assembly is configured to rotationally lock the wheel mount with respect to the standing frame, and configured to unlock the wheel mount so that the wheel mount is rotatable relative to the standing frame for changing an orientation of the wheel axis. The release mechanism includes a first portion provided on the standing frame and coupled to the locking mechanism, and a second portion carried with the handle frame, the second portion being movable along with the handle frame toward and away from the first portion during rotation of the handle frame.

There is provided a pram frame (200) comprising a first roller attachment point (221) configured to engage with a first roller set (121) and a mechanism (231) configured to engage with the first roller set (121) via the first roller attachment point (221). The mechanism (231) is configured to provide driven steering of the first roller set (121) when a user steers the pram frame (200).

A wheeled childcare device includes: a body frame; a caster mechanism including a caster holding member and a caster pivot member and configured to allow a front wheel or a rear wheel to swivel; a caster lock member provided in the caster mechanism and configured to assume a lock position and an unlock position; a displacement member configured to be displaced between a first position corresponding to the lock position of the caster lock member and a second position corresponding to the unlock position of the caster lock member; a first biasing member configured to bias the displacement member toward the second position; and a drive member provided on the push bar and configured to be switched between a first state and a second state.

A wheeled childcare device includes: a body frame; a caster mechanism including a caster holding member and a caster pivot member and configured to allow a front wheel or a rear wheel to swivel; a caster lock member configured to assume a lock position and an unlock position; a first biasing member configured to bias the caster lock member toward the lock position; and a moving member provided in the caster holding member and movable between a first position and a second position. The first position is a position in which the caster lock member is moved to the lock position, and the second position is a position in which the caster lock member is moved to the unlock position.

A delivery system includes a handheld electric lift configured to lift at least one vaporizer vessel, and a cabinet configured to hold the at least one vaporizer vessel. The lift includes an elongated mast, an effector attached to the mast, a handler configured to move the lift, and at least one caster. The effector is controlled by an electric power source to move along the mast. Each of the at least one caster includes a stopper and a wheel. The stopper is elongated and is disposed above the wheel. The stopper is configured to engage with the wheel to prevent the wheel from swiveling when the stopper is pushed down. The stopper is further configured to disengage with the wheel to allow the wheel to swivel when the stopper is released. The cabinet includes at least one channel configured to accommodate the at least one caster.

A wheel set brake mechanism includes a drive member mounted on the movable frame; and a brake assembly including a drive pin, a traction member and a locking member. The drive pin is operably connected to the drive member. The traction member includes a first cable and a second cable, a first end of the first cable is connected to the drive pin, a second end of the first cable extends into an inner cavity of the hollow shaft to be rotatably connected to a first end of the second cable, and a second end of the second cable is connected to the locking member. The drive member is configured to drive the drive pin to slide so that the traction member causes the locking member to slide to lock the wheel.