Upholstered seating furniture having backrest provided with occupant's upper-body-conforming capability

For the environment of upholstered seating furniture having a rearwardly positioned upright backrest and a forwardly positioned horizontal seat and which backrest and seat are both intersected by a vertical central-plane, said backrest comprising a pair of rigidly and spaced-apart sidemembers flanking said central-plane and lying along a vertical forward-plane that perpendicularly intersects said central-plane, said backrest sidemembers being attachably provided with a primary-array of horizontal and vertically-undulate metallic primary-springs that respectively extend concavely forwardly from said sidemembers and beyond said forward-plane, an improved backrest having cradling and upper-body-conforming capability to a seated occupant and that upper-bodily recumbently leans directionally rearwardly toward said upright backrest and comprising:

• (A) a secondary-array comprising a plurality of horizontal and vertically-aligned and vertically-undulate metallic secondary-springs attachably located and extending at an abruptly-convex-value forwardly of said primary-array to provide a combined-array, each said secondary-spring being attached to a pair of upright secondary-rods flanking said central-plane, said secondary-array being capable of assuming a lesser-convexity-value whenever a said seated person leans recumbently rearwardly against said combined-array, and said attachment between primary-array and secondary-array being in the form of at least one primary-spring and horizontally aligned secondary-spring in a trans-springs joinder attachment;
• and
• (B) a substantially vertically extending resiliently-compressible padding means located immediately forwardly of said secondary-array and being attached to said combined-array and being flexible along said vertical central-axis to assume said lesser-convexity-value concommitantly with said secondary-array of secondary-springs.