US Patent 7237286 Articulating bed

An articulated bed has a stationary frame and a plurality of mattress support sections defining a mattress support area, the support sections including: a left section, a right section, a head section and a foot section. The left and right sections are hingably interleaved so that by raising either one, a patient may be rolled over or moved laterally. A plurality of lift arms and lift drivers are engaged with the stationary frame for moving each of the support sections between a horizontal position and an elevated position. The sections may be elevated individually or in concert.