I have a thread here
about electric clutches.
I want a simple, lightweight clutch that can be disengaged electrically and reengaged by spring pressure to remove the need to retain the flywheel and clutch or to operate it without the pedal. The clutch only needs to be 'on/off' without having to hold any slip.
What you describe is the sort of thing I am looking for but with the capacity to handle car type torque.
I would imagine a simple cone clutch held on with spring pressure and released with a low load lever would be relatively easy to manufacture.
The release could be by means of a coarse helical thread. Rotating part of the clutch casing one way would disengage the clutch, rotating it back would allow the spring to apply holding pressure.
That would reduce the load on the release actuator.
I suppose some sort of motorbike clutch pack would work.