| 摘要 |
SUPPORT STRUCTURE FOR SOFA BEDS, WITH PULL-OUT, RAISABLE AUXILIARY BED. Support structure for sofa beds, with pull-out, raisable auxiliary bed, which comprises an upper frame carrying support means for a mattress and connected, by means of rods linked as a parallelogram, to two lower bars transverse to the larger dimension of the frame, blocking means being present for the raised position and balancing means for the weight of the frame, the sofa bed being equipped with a seat-back adjustable in position. |
