Today’s invention offers a way to ensure that padlocks, which often freeze up when left outside in winter, can still be unlocked.
The mechanism itself, within the main body of the lock, would be surrounded by a layer of insulating material.
The lock would be supplied with a toothed band that is dragged repeatedly across a toothed wheel, so as to accelerate a small flywheel inside the lock.
Once this is moving very fast, a brake mechanism is engaged and the kinetic energy is then used to heat up the lock mechanism with which it’s in direct contact. This allows the key to be inserted and turned.