Electromagnetic Artificial Muscles

A coil and a moving magnet make a short-stroke linear motor. That motor can charge, hold, or drive a piston without a gas system.

Same building blocks as the recoil patent — applied to controls instead of the buffer.

Lab status. Not a product.

Lorentz / reluctance actuators. Force is current × turns × field. Duty cycle is shot-paced, so thermal design is pulsed, not continuous.