Abstract: A seat having a movable armrest which is retractable to a lowermost position so that a user can obtain greater access to the seat. In a first embodiment, a horizontal shaft pivotably supports a rear portion of the armrest to allow the forward portion of the armrest to be pivoted downwardly. When the armrest is in the unretracted position, a locking device is provided for firmly locking the forward portion of the armrest to the seat frame. In the second embodiment of the invention, a pair of rails are secured to the frame of the seat and a pair of guides are respectively secured to the forward and rear portions of the armrest. The guides are respectively received in the rails to allow the rails to be translated downwardly to allow greater access to the seat. When the armrest is in the unretracted position, the guides are secured to the rails so that the armrest is retained firmly in place.

Abstract: Disclosed is a tilt lock device for a passenger seat used for a vehicle, ship or air plane, which has a seat back (1) mounting a shoulder harness (12). It includes a base frame (5) having a pair of right and left spreaders (6) composed of front side supporting portions (6a) hung substantially in the horizontal direction between front and rear beams (3)(4), and rear side supporting portions (6b) projecting so as to be tilted upward from the rear portions of the front side supporting portions (6a), wherein the lower end portions of seat back frames (2) are rotatably supported on the rear side supporting portions (6b) of the spreaders (6).