(under subclass 731) Nonplanar mattress top surface in which the pad accommodates a user's upper torso portion or extremities, often in a raised or lowered configuration relative to other body portions of the user.
SEE OR SEARCH THIS CLASS, SUBCLASS:
621+, for invalid beds or surgical supports with upper body supporting or restraining areas.
632+, for simultaneous supporting devices for multiple body portions that are removably positionable on the top surface of a mattress or other body support.
638, for head or neck support with means to permit the passage of air for breathing.
646+, for arm or hand supports.
, +725, for ventilated mattresses providing means in the head supporting area of the mattress for breathing by a prone user.
