Improvements introduced in the mechanisms for aber-ture and closing doors

摘要

MECHANISM FOR OPENING AND CLOSING DOORS WITH ELECTRIC SYSTEM (CERTIFICATE OF ADDITION TO THE PATENT NO. 476130). HAS AN INVESTOR SUPPORT BLOCK (1) SLIDING BY RAIL MOUNTED FIXED STRUCTURE GENERAL whose mission is to move the door, open or closed. YOUR ELEMENT CHARACTERISTIC IS THE INVESTOR PIÑON (5), which carries a toothing (10) ONLY IN HIS HALF AND OUTGOING pair of pivot pins (7). CHAIN ​​DRIVE WITH TWO BRANCHES PARALLEL GEARS Pinion INVESTOR IN HALF having teeth; Moving forward pinion 180 degrees, it is the other branch of the chain meshing with the pinion, and so SUCESIVAMETE. WHEN IN THE JOURNEY ENDS ONE OF THE PIVOT (7) PLAYS WITH LIMIT BUTT Correspondingly, for the mechanism being arranged for the distance CONTRARY. I