An improved cargo dolly for transporting cargo is described having a mobile dolly frame, a main shaft on the frame, a lever proximate to a first part of the frame (where the lever is movable relative to the frame and in responsive communication with the main shaft), a first set of transfer sprockets mounted to the main shaft, a secondary shaft rotatably disposed at a second part of the frame (where the first part is remote from the second part), a second set of transfer sprockets mounted to the secondary shaft, a chain disposed about the first set of transfer sprockets and the second set of transfer sprockets, and a locking pin having a first end fixed to the secondary shaft and a second end configured as an angled latch. Rotation of the lever responsively causes the locking pin to remotely rotate at the second part of the frame.

A counterbalanced vertical track assembly which may be configured with three types of pulley support assemblies are herein disclosed. The first type of pulley support assembly has a pair of opposed pulley modules having an elongate structural element interposed the two pulley modules which are attached to end plates at both ends of the elongate structural element. The second type of pulley support assembly has a pair of opposed pulley modules which include male end connectors for demountable engagement of the pulley modules with another module of the system with female ends. The third type of pulley support assembly has a pair of opposed pulley modules wherein the modules' pulley brackets are repositionable to varying angular orientations by alternating screw mount positions selected on mount components at opposite ends of an elongate structural element.

An improved cargo dolly for transporting cargo is described having a mobile dolly frame, a main shaft on the frame, a lever proximate to a first part of the frame (where the lever is movable relative to the frame and in responsive communication with the main shaft), a first set of transfer sprockets mounted to the main shaft, a secondary shaft rotatably disposed at a second part of the frame (where the first part is remote from the second part), a second set of transfer sprockets mounted to the secondary shaft, a chain disposed about the first set of transfer sprockets and the second set of transfer sprockets, and a locking pin having a first end fixed to the secondary shaft and a second end configured as an angled latch. Rotation of the lever responsively causes the locking pin to remotely rotate at the second part of the frame.

A towable mover includes a flexible mat and a hollow tow bar substantially contained in a sleeve at the leading edge of the mat. A tow rope is coupled to each end of the tow bar for towing. Couplings include a plug assembly securely received within the interior space at an end of the tow bar and a rope coupling assembly attached to the plug assembly. The plug assembly includes a resilient elastomeric cylindrical plug, the diameter of which swells when the ends are squeezed together by tightening a bolt. The rope coupling assembly is external to the tow bar and external to the sleeve. The sleeve is disposed between portions of the mat that may freely fold to allow passage through narrow spaces.

An improved cargo dolly for transporting cargo is described having a mobile dolly frame, a main shaft on the frame, a lever proximate to a first part of the frame (where the lever is movable relative to the frame and in responsive communication with the main shaft), a first set of transfer sprockets mounted to the main shaft, a secondary shaft rotatably disposed at a second part of the frame (where the first part is remote from the second part), a second set of transfer sprockets mounted to the secondary shaft, a chain disposed about the first set of transfer sprockets and the second set of transfer sprockets, and a locking pin having a first end fixed to the secondary shaft and a second end configured as an angled latch. Rotation of the lever responsively causes the locking pin to remotely rotate at the second part of the frame.

A shopping cart includes a frame, a plurality of wheels for supporting the frame for movement over a floor, an arm connected to the frame, and a projection positioned proximate at least one of the wheels. The frame has a front end and a rear end. The arm is configured to engage the tow member for moving the frame. The projection engages the guide member to prevent one of the front end and the rear end from rotating over the other of the front end and the rear end. A handle assembly may include an elongated slot positioned proximate a handle. The shopping cart may also include a tray is releasably secured to the frame by inserting a tab into a slot. The shopping cart may also include a tab received within a slot to secure a basket against movement relative to the frame.

The invention discloses a method of manufacturing a handrail assembly including steps of 1) providing a first material layer and a second material layer, wherein the second material layer is a hot melt material; 2) stacking the second material layer on the first material layer to form a substrate layer with an integrated structure; 3) curling the substrate layer to form a handrail cover matching a handrail tube, wherein the handrail cover is a sleeve structure and the second material layer is located at an inner side of the handrail cover; 4) inserting the handrail tube matching the handrail cover into the handrail cover to form a handrail assembly semi-finished product; 5) baking the handrail assembly semi-finished product until the second material layer is completely melted; and 6) cooling the handrail assembly semi-finished product after baking to form the handrail assembly.

A tray assembly is provided. The assembly comprises a tray, at least one width reinforcement component affixed to the tray, and at least one length reinforcement component affixed to the at least one reinforcement component.

A handrail assembly, a manufacturing method for the handrail assembly, a support frame structure having the handrail assembly, and a child carrier. The handrail assembly comprises a handrail body, wherein the handrail body is covered with a first protective layer of a flexible structure, the first protective layer is covered with a second protective layer, the second protective layer shields the first protective layer to prevent the first protective layer from being exposed to the outside. The support frame structure comprises a front support assembly, a rear support assembly, a push rod assembly, a connecting assembly and a handrail assembly, a connecting portion of the handrail assembly being detachably connected to the connecting assembly. The handrail assembly can prevent the first protective layer from being exposed to the outside, and prevent children from accidentally swallowing the filling of the first protective layer, thereby guaranteeing the life safety of children.

A counterbalanced vertical track assembly which may be configured with three types of pulley support assemblies are herein disclosed. The first type of pulley support assembly has a pair of opposed pulley modules having an elongate structural element interposed the two pulley modules which are attached to end plates at both ends of the elongate structural element. The second type of pulley support assembly has a pair of opposed pulley modules which include male end connectors for demountable engagement of the pulley modules with another module of the system with female ends. The third type of pulley support assembly has a pair of opposed pulley modules wherein the modules' pulley brackets are repositionable to varying angular orientations by alternating screw mount positions selected on mount components at opposite ends of an elongate structural element.