Cart, undercarriage with foldable wheels

Abstract

An undercarriage comprising a rectangular, tubular frame defining a plane, two supporting members having upper U-shaped sections and angled lower sections, a pair of axles, a pair of wheels, and a pair of locking devices. Each upper U-shaped section is pivotally attached to one of the end members of the frame with the base portion of the U-shaped section extending above the plane when the supporting members are in an unfolded position. Each lower section is fixed to an end of one of the legs of the upper section and extends below the plane. Each axle is attached to a lower end of one of the angled lower sections. Each wheel is rotatably mounted on one of the axles. Each locking device is interconnected between one of the end members of the frame and one of the supporting members to lock that supporting member in the unfolded position. The supporting members are entirely within the plane defined by the frame when in a folded position.

Dependencies are inferred from the claim text.