Magnetic lock

A magnetic lock for operation by a key having a plurality of spaced apart magnets of different field strengths, said lock comprising:

• a stator and a movable part, said stator having two spaced apart portions on opposite sides of said movable part to define two spaced apart shear planes, said movable part being movable to and from a locked position;
• both stator portions having a like plurality of recesses in their respective surfaces that confront said movable part, said recesses being in alignment and being alignable with the key magnets;
• said movable part having a like plurality of spaced apart through holes in alignment with said cavities when said movable part is in said locked position for rendering said through holes alignable with said key magnets;
• a like plurality of pin tumbler magnets slidably disposed in said through holes, said pin tumbler magnets being of no greater longitudinal extent than said through holes;
• and
• a like plurality of means, one for each pin tumbler magnet, for biasing each of said pin tumbler magnets toward one of said stator portions, at least two of said pin tumbler biasing means exerting different biasing forces on said pin tumbler magnets, whereby when said key is juxtaposed adjacent to said one stator portion and said key magnets are registered with said pin tumbler magnets and of effective field strength and polarity to repel said pin tumbler magnets with a force equal to the different biasing forces on said pin tumbler magnets, said pin tumbler magnets will be out of both said shear planes to unlock said lock.