TiNi’s Auto Resetable Pinpullers were born out of space constrained applications where the Actuator is buried deep within a complex instrument with no access to perform a manual reset. Auto reset is achieved by incorporating a secondary SMA actuator which can re-extend the Pin and yet not interfere with normal actuation. This is done using a custom flexure developed by TiNi using our patented SCSMA material.
TiNi AUTO RESET-ABLE PINPULLERs OFFER THE FOLLOWING ADVANTAGES:
NEA (Non-Explosive Actuators) – As with all TiNi products, the Auto Resetable Pinpullers are non-pyrotechnic and field reset-able with a minimum qualified life of 100 cycles.
Electrical Reset – The mechanism can be reset remotely by powering the reset circuit with no manual intervention. A redundant reset circuit may be incorporated for maximum reliability.
Redundant Firing Circuit – As with all TiNi Actuators a redundant SMA circuit is incorporated. This provides complete electrical redundancy as well as mechanical redundancy for the critical TiNi trigger element.
Fast Acting – By directly passing current through the SMA element, the Pinpuller’s perform in millisecond time frame making them ideal for synchronized and simultaneous release of multiple tie-down payloads.
Auto Shut-Off Switches – Simple Auto Shut Off Switches are incorporated into each Pinpuller to protect the TiNi Trigger. This makes them very “user friendly” and operable from a wide range of current and voltages.