Provided is a tilt arm for a seat that is applied to a vehicle seat and that moves in a pivoting manner when changing an angle of inclination of a front end portion of a cushion pad. The tilt arm includes a coupling arm portion pivotably coupled to a side frame of a cushion frame, and a leading-end-side arm portion coupled and fixed to a leading end portion of the coupling arm portion. A sectional shape of a fixed portion, where the coupling arm portion and the leading-end-side arm portion are coupled and fixed to each other, is a closed sectional shape formed by a closed curve. A sectional shape of the coupling arm portion at the fixed portion and a sectional shape of the leading-end-side arm portion at the fixed portion are each an open sectional shape that is partially opened.

A seat pan for a vehicle seat. The seat pan includes a rear portion and a front portion. The seat pan includes a flexible area arranged between the rear portion and the front portion, said flexible area enabling the front portion to be arranged in a tilted state relative to the rear portion and wherein the seat pan is formed in a single piece.

A vehicle seat assembly having a seat bottom that includes first and second side frame members and a front cushion module. The front cushion module has a support member and a cushion. The support member has first and second ends that are disposed proximate the front end of the first and second side frame members, respectively. The cushion receives and is supported by the support member and has a front end. The vehicle seat assembly may have an actuator cooperable with the support member for tilting the front end of the cushion relative to the frame members.

A seat drive device is provided with: a single rotary motor; a plurality of operating members, which are arranged to correspond to a plurality of positioning mechanisms; a plurality of tubular members, which are arranged to correspond to the positioning mechanisms and selectively connect an output shaft to the positioning mechanism corresponding to the operating member operated with the operation of any one of the operating members and input shafts rotated by the rotary motor; and a single switch, which passes an electric current through the rotary motor with a polarity corresponding to the direction of the operation with the operation of any one of the operating members.

A seat assembly comprises a seat adjuster; and a seat including: a seat bottom connectable to a track assembly; a seatback pivotably connected to the seat bottom; a calf rest pivotably connected to the seat bottom; and a headrest pivotably connected to the seatback. The seat adjuster includes one or more motors and is connected to the seat to adjust the seat to a first seat position and to a second seat position via adjusting the seatback, the calf rest, and the headrest about a plurality of pivot axes.

It is provided a vehicle seat, with a backrest which is rigidly coupled to a seat part so that a pivotal movement of the backrest about a rear pivot axis, via which an inclination of the backrest can be adjusted, always is accompanied by a corresponding pivotal movement of the seat part. There is provided a pan adjusting device via which a seat pan part can be pivoted relative to the seat part about a seat part pivot axis.