Patent ID: 7594286

Claim:
A bed, comprising: a) an adjustable bed frame, the bed frame having a head portion, the bed frame configured and adapted to adjust the head portion to a plurality of angles; and b) an angle indicator for measuring an angle of inclination of a structure with respect to a plane, the angle indicator being adapted and configured to measure the angle of elevation of the head portion of the bed frame with respect to the horizontal plane, the angle indicator being removably attached to the bed frame, the angle indicator including: i) a housing adapted and configured to be mounted to the bed frame; ii) an indicator mounted on and movably disposed with respect to the housing having an angular range of motion about an axis intersecting the plane; and iii) indicia provided on the housing for indicating proper angulation of the bed frame with respect to the plane, wherein the indicia is defined at least in part by a first arcuate segment, wherein the indicia and the indicator are configured to be in visual alignment to an observer when the angle of inclination of the bed frame with respect to the plane achieves a predetermined angle.