Patent attributes
A flat platform cart with collapsible casters which is stable in positioning and convenient in collapsing and use. It comprises a supporting section, a push-pull section and a caster section connected thereto by a linkage means, and an extension positioning means which enables the push-pull section and the caster section to be maintained in an extending state; the extension positioning means comprises a vertical positioning means which simultaneously locks the push-pull section and the caster section in position and a horizontal positioning means disposed between the load supporting platform and the supporting bases which horizontally locks the push-pull section in position. When the flat platform cart is extended, horizontal and vertical positioning are simultaneously being carried out, therefore the positioning is very stable and it is convenient for use.
