Magnetic missile and novel system of use

Abstract From the Canadian patent

Magnetic missiles having a disk like shape with a central aperture are known to be thrown at a magnetic target. In this invention a magnetic missile has been adapted to be used with a launching device and target. The magnetic missile has permanent magnetic north and south poles induced on one side for optimal holding power on the target while the other side's remnant magnetism has relatively weak holding power. The launching device's launching surface is of hard magnetic material customized to co-operate with the missile's side of remnant magnetism to hold the missile on the launching surface. The co-operative magnetism is only sufficient to prevent the missile from falling off during …