can be rotated so as to be aligned in a common plane against the frame of the cart application_number US 87775001 A description referring now to fig1 and 3 the cart is shown and the cart includes a frame 11 a handle 13 a platform or shelf 15 and a wheel assembly 19 including wheels 21 the handle 13 is secured to the frame 11 at the center point of the frame 11 between the two wheels 21 the frame 11 is an inverted u shaped member including a cross bar 23 and two wheel bars 25 each wheel bar 25 is attached at its upper end 27 to opposite ends of the cross bar 23 generally at right angles to the cross bar 23 and substantially parallel to one another the opposite end of each wheel bar 25 is the lower end 29 of the wheel bar 25 the handle 13 is securely affixed to the cross bar 23 as stated midway between the two wheel bars 25 for purposes of reference the back of the frame 11 is where the wheels 21 are located and the front of the frame 11 is where the shelf 15 is located the wheel assembly 19 is mounted on each of the two wheel bars 25 each wheel assembly 19 includes a journal 31 mounted on each wheel bar 25 so as to rotate on the wheel bar 25 the journal 31 has a lower end 33 adjacent the lower end 29 of the wheel bar 25 and an upper end 35 opposite from the lower end 33 an end collar 37 is secured to the lower end 29 of each wheel bar 25 by a set screw 38 a spring 39 is placed between.