Patent ID: 7703851

Claim:
A seat device, comprising: a rotational mechanism portion to enable a seat back to at least rotate rearward around a lower end thereof from a specified standard position thereof; a tilt mechanism portion to enable a front portion of a seat cushion to at least move substantially vertically; and a linkage mechanism portion to make the tilt mechanism portion move the front portion of the seat cushion substantially vertically in accordance with a rotation of the seat back enabled by the rotational mechanism portion, wherein said tilt mechanism portion is configured such that a vertical moving distance of the front portion of the seat cushion is greater than a longitudinal moving distance thereof when the front portion of the seat cushion moves between a lowermost position and an uppermost position thereof, wherein said linkage mechanism portion comprises a slot operative to restrain conveyance of a rotational movement of the seat back to said tilt mechanism portion when the seat back is positioned within a specified rotational range, the slot being formed at a constituting member of the linkage mechanism portion, wherein said linkage mechanism is configured to make said tilt mechanism portion move the front portion of the seat cushion to the uppermost position when the seat back is rotated rearward to a reclining position thereof by a specified angle from the specified standard position, wherein said linkage mechanism is configured such that said slot of the link works so as to maintain the front portion of the seat cushion at the uppermost position when the seat back is rotated rearward further from the reclining position.