SEAT CONSTRUCTION

The invention contemplates a seat comprising rigid structure and yieldable padding beneath a desired upholstery covering. The frame is of stamped sheet material or of plastic laminate and defines an elongated concavity between spaced elongated shoulders. The padding may be molded foamed material, but important economies are realized by using slabbed stock of uniform thickness; different seat and back-support objectives are achieved by selection of slab thickness and/or slab density for each of several slab parts forming the padding of any particular seat element. The upholstery compressionally loads foamed material against the concavity in such manner that a body load on the seat is sustained primarily by the foamed material in its progressive reaction to the centering support afforded by convergent locales of the concavity.