Patent ID: 7429083

Claim:
An ottoman device comprising: a mounting bracket fixed to a front end of a seat; a first rotation link rotatably supported on the mounting bracket at a rotational axis, the first rotation link supporting an ottoman main body through a pair of oscillating links which are rotatably supported on the first rotation link so that the ottoman main body is extended to a front direction of the seat or stored within the seat in accordance with rotation of the first rotation link in a first direction and a second direction; a lock device for prohibiting or allowing the rotation of the first rotation link, the lock device arranged between the mounting bracket and the first rotation link around the rotational axis of the first rotation link; and biasing means having one end engaged with the front end of the seat and the other end engaged with a second rotation link in order to apply biasing force to the second rotation link so as to extend the ottoman main body in the first direction of the seat, the biasing force from the biasing means is set so as to be proportionally increased in accordance with a rotation of the second rotation link in the second direction when the ottoman main body is stored within the seat, the biasing means is attached in order to reduce an increment of the torque used for rotating the second rotation link in the first direction in accordance with the rotation of the second rotation link in the first direction.