2. CONVERTIBLE TRANSPORT TROLLEY HAVING A PAIR OF FOLD-AWAY LEGS AND SIMULTANEOUSLY FOLD-AWAY WHEELS
3. WHEEL FOLDING DEVICE SUITABLE FOR A CARRIAGE FOR LOADING FREIGHT
4. FOLDING BEARING STRUCTURE, PUSHCHAIR
5. WHEEL FOLDING DEVICE SUITABLE FOR A CARRIAGE FOR LOADING FREIGHT HAVING AN OMNIDIRECTIONAL WHEEL
6. LOAD TRANSPORTATION SYSTEM FOR E.G. TRANSPORTING PUCHARSED GOODS IN SHOPS, HAS DEPLOYING AND FLOLDING UNITS FOR PERMITTING DEPLOYMENT OF SYSTEM FROM FOLDED POSITION TO DEPLOYED POSITION BY MOVIN LOAD SUPPORT PLATE ALONG AXIS
7. ANTIPARALLELOGRAM FOLDING STRUCTURE, AND CORRESPONDING BABY CARRIAGE, TABLE AND CART
8. COLLAPSIBLE EXPANDABLE BI-STRUCTURE