Patent ID: 7058999

Claim:
An electric bed comprising: a back bottom; a knee bottom; a first drive section for rocking said back bottom up and down; a second drive section for rocking said knee bottom up and down; and a control section which controls said first drive section and said second drive section in such a way that a back angle α that is a lift-up angle of said back bottom from a horizontal state and a knee angle β that is a lift-up angle of said knee bottom from a horizontal state change along a preset pattern defined in a coordinate system (α, β), and which has a storage section for storing a pattern connecting between a coordinate point (0, 0) at which each of said back bottom and said knee bottom is horizontal and a coordinate point (α 0 , β 0 ) at which said back bottom is lifted up in (α, β) coordinates by a plurality of predefined (α, β) coordinate points and an operation section for controlling said first drive section and said second drive section in such a way that said back angle α and said knee angle β change along said pattern, wherein said pattern comprises at least said coordinate point (α 0 , β 0 ).