Adjustable seat especially for a motor vehicle

Claim 1

A seat having a supporting frame adapted to be mounted on a floor, a seat pad, a pad support within said frame, said seat pad having at least a central part slidable longitudinally on said pad support to different positions relative to said pad support, and associated means on said frame and said pad support for adjusting said pad support together with at least said central part of said pad in a substantially vertical direction near the front end and also near the rear end of said pad support relative to said frame so as to permit the height of said pad from the floor and, if desired, also its inclination relative to said floor to be adjusted to different positions, said pad support having a pair of front studs and a pair of rear studs projecting laterally to the outside of the opposite longitudinal sides of said support near its front and rear ends for supporting said pad support on said frame, a pair of rear lateral bearing elements and a pair of front lateral bearing elements secured to said frame, each of said rear bearing elements having a plurality of grooves above each other and extending substantially in the longitudinal direction of said seat and being open at least at one end, said rear studs projecting into and being slidable in the corresponding grooves of said rear bearing elements, each of said front bearing elements having a plurality of guide tracks above each other and also extending substantially in said longitudinal direction, each of said guide tracks of both front bearing elements having a downwardly extending locking recess at one end, and a subsTantially vertical connecting track connecting the other ends of said guide tracks of each front bearing element to each other and terminating at its upper end into a longitudinal slide track, each of said grooves in said rear bearing elements having a greater length than each of said guide tracks, and each of said slide tracks having a greater length than each of said grooves, said front studs being adapted to slide along said slide tracks of said front bearing elements when said rear studs are to be withdrawn from a corresponding pair of grooves at one level in said rear bearing elements and are to be inserted into a corresponding pair of grooves at another level, said front studs being further adapted to be thereafter inserted into said vertical connecting tracks and then into any pair of corresponding guide tracks of said front bearing elements and to be moved along the same until they engage into said locking recesses of said guide tracks.