Abstract: A torque limiter assembly includes a first rotational form mounted to a driving component of rotational dive system the first rotational form adapted to receive a second rotational form mounted to a driven component, the forms rotational over a shared hub, the second form adapted to engage to and be disengaged from the first form by a plurality or disconnect assemblies spaced equally around and mounted through a sidewall of the first rotational form, each disconnect assembly a spring assisted piston and a tensioner adapted to engage a detent in the second rotational form, the disconnect assemblies operable in unison to disengage from the second rotational form from the first rotational form upon detection of breach of a torque load threshold value set for each of the disconnect assemblies.

Abstract: A torque limiter in which grease passages are provided to enable better lubrication of the wearing components. A disconnect nut is also provided to readily enable release of the torque limiter even for very high release sellings to afford greasing as a part of a maintenance regimen.

Abstract: A resettable torque limiter for installation between two rotary members, which can smoothly disengage upon application of predetermined torque acting between the members and smoothly reset upon decline of applied torque below the predetermined level. An undulating engagement surface formed on one member according to a function preferably an eighth power polynomial is engaged by a plurality of engagement elements on the other member which smoothly ride over lobes formed on the engagement surface when the torque limit is exceeded without causing any discontinuities in acceleration or jerk when the driving connection between the rotary members is interrupted until the applied torque declines below the preset limit.