the door all the way around and over ledge 38 so that it is fully supported by ledge 38 or if they did so swing the door they might not take enough time to latch it properly in an open position so that it could still swing back and away from the support provided by ledge 38 if the cart or door is struck while the weight of the door is on the hinge it could bend them it should now be apparent that the hinges are probably the most vulnerable parts of the rolling cart accordingly the inventive shock absorbing door 24 fig3 has upper and lower hinge pins 44 46 respectively forming a hinge axis the spring loaded paddle handle 36 has been deleted in favor of a simple non moving recessed handle 48 so that broken latch springs are no longer a problem at the upper edge 50 fig2 of the cart there is a u shaped channel member 52 fig4 which is covered and enclosed by the top panel 54 a sliding block 56 preferably made of a durable plastic such as nylon has dimensions such that it slides in the channel 52 and is captured within the slot by the top panel 54 fig2 a compression spring 58 resting on channel partition 59 pushes the block 56 to a normal position against an end panel 60 of the channel 52 the compression spring 58 is resting in a blind horizontal hole 66 in the block 56 in this position the hinge pin 44 on the door 24 passes upwardly through a window 62 in the floor of channel 52 and into a hole 64 in the block 56 as shown in fig5 in this normal operating position the.