Foam plastic frame for pneumatic mattresses is made up of bars which are divided longitudinally into upper and lower sections and held together by connecting sections which lock together in same way as jigsaw puzzle pieces

摘要

The foam plastic frame for pneumatic mattresses is made up of bars which are divided longitudinally into upper and lower sections. These are held together by connecting sections (1, 2) which lock together in the same way as jigsaw puzzle pieces.