rotating bed

12.31: gear/rotating bed:

. the bed is a cage with foam fit all around

with hole for face .

. it provides movement to avoid bed sores .

. the pivot points for head-to-foot axis rotation

are at adjustable heights like so:

change the angle of the head-to-foot from horz'al

by having 2 pulleys at foot and head,

so the bed is held at either end

by a single chain that is held by both pulleys

such that lowering the foot of bed

will in turn raise the head of the bed .

. the rotation engine can use it's own weight

for the torque to slowly rotate the cage;

it hangs like a balast from one end,

and as it cranks on the bed,

it either has to raise itself or turn the cage .