Abstract: A car seat, which is rotatable and linearly movable. The car seat has a lower plate having a centrally located pinion on the top surface and parallel movable rails on the bottom side. The movable rails are linearly movable on support rails fixed onto the floor of a car body. An upper plate is rotatably connected to the lower plate by a connecting shaft with a predetermined space therebetween and having a seat cushion thereon. A swivel mechanism is provided between the lower and upper plates and is used for adjusting the rotatable position of the upper plate relative to the lower plate. A plurality of locking holes are formed on each of the support rails, while a sliding lever is rotatably mounted to the movable rails and has a stopper selectively locked into or released from the locking holes.

Abstract: Disclosed is an apparatus for adjusting the height of the seat cushion for a vehicle which includes a rubber tube positioned under the seat cushion, a pressure sensing means positioned under the rubber tube and moving upward or downward depending upon the load supplied on the seat cushion, a first switch and a second switch selectively operating a compressor and a vacuum pump depending upon a signal from the pressure sensing means, and a limit switch cutting off the first switch on contact with the rubber tube.