Automatic tensioning strap, especially for synchronous transmission belt, timing belt as an internal combustion engine.

摘要

TENSION AUTOMATIC BELT SYNCHRONOUS, ESPECIALLY FOR TIMING BELT TIMING OF MOTOR THERMAL OF "LINEAR WITH upthrust" TYPE, comprising a roller (21) SUITABLE TO COOPERATE WITH BELT (11) and an actuator (25) of said ROLLER PISTON (31) slidably mounted in a body (30) defining a pressure chamber (32) and a storage chamber (33) OF A HYDRAULIC FLUID, SUCH CAMERAS CAN COMMUNICATE WITH EACH OTHER FOR AT LEAST ONE CHANNEL SAID pISTON ON WHICH CARRIES THE ACTION OF A compression spring (36) drives the piston toward the storage chamber. THE PISTON (31) is BORED BY MULTIPLES channels that can be opened / closed by a butterfly (40) formed by a OPERATIVA valve formed by a lip LIGHTWEIGHT.