US Patent 7686398 Seat apparatus for vehicle

A seat apparatus for a vehicle includes a first engagement member moving in association with an upper arm, a second engagement member pivotally moved between a first position and a second position for pivotally moving the upper arm from a first pivot position to a second pivot position and retaining the upper arm at the second position by an engagement between the first engagement member and an engagement portion of the second engagement member, and a tilting mechanism releasing a lock of a reclining mechanism for pivotally moving the upper arm to a third pivot position. The seat apparatus further includes a retaining mechanism provided at the second engagement member for retaining the second engagement member at the first position against a biasing force of a biasing mechanism for biasing the second engagement member in a direction from the first position to the second position.