Abstract: A power take-off for compressors, comprising: a first rotating element (2), predisposed to be connected on command to a motor (40); at least a second rotating element (3), kinematically connected to the first rotating element (2), which is predisposed to be connected to a first user (50); a torque limiter or clutch (4), interposed between the first rotating element (2) and the second rotating element (3).

Abstract: A power take-off for compressors, comprising: a first rotating element (2), predisposed to be connected on command to a motor (40); at least a second rotating element (3), kinematically connected to the first rotating element (2), which is predisposed to be connected to a first user (50); a torque limiter or clutch (4), interposed between the first rotating element (2) and the second rotating element (3).

Abstract: The power take-off (10) applied on industrial vehicles eliminates noisiness generated by play between cogs of transmission cogwheels (14,19) when the p.t.o. is functioning non-operatively. Thanks to a special geometry of the cog directions of the cogwheels (19, 14) in the transmission gearings, play between cogs is eliminated when there is no power transmission. The play is re-established when the p.t.o. is functioning operatively, by overcoming elastic (21) means acting axially on the gearings (14), and by thus returning the gearings (14) into a normal operative position.

Abstract: The power take-off (10) applied on industrial vehicles eliminates noisiness generated by play between cogs of trans-mission cogwheels (14, 19) when the p.t.o is functioning non-operatively. Thanks to a special geometry of the cog directions of the cogwheels (19, 14) in the transmission gearings, play between cogs is eliminated when there is no power transmission. The play is re-established when the p.t.o. is functioning operatively, by overcoming elastic (21) means acting axially on the gearings (14), and by thus returning the gearings (14) into a normal operative position.

Abstract: An actuator for engaging and disengaging parts together which, during actuation may incur an obstacle to engagement, the actuator including a mechanism for incurring the obstacle and automatically stopping actuation, a mechanism for removing the obstacle to engagement and for automatically restarting actuation upon removal of the obstacle thereby to achieve engagement.