Seat for airplanes and buses

摘要

The present invention relates to a seat for airplanes, buses and like vehicles. The seat comprises a frame, an upholstery support, and a three-piece device for locking both sides of the upholstery support in a selectable pivot position. The locking device includes a stepless adjustable-length bar in the nature of a hydraulic piston, a body for connecting the front end of the hydraulic piston to a front cross member of the seat frame, and a pivot lever for attaching the rear end of the hydraulic piston to a rear cross member of the upholstery support.