Abstract: A load responsive switch actuator mechanism comprises a body of deformable material (e.g., an elastomeric material) which deforms under either compressive or tensile forces to actuate a switch. In one preferred embodiment the deformable material is in the form of a solid, generally cylindrical configuration which, when compressed, will expand in diameter to actuate a load responsive switch. In a second preferred embodiment the deformable material is in the form of a generally cylindrical tube which, when subjected to a tensile load, will decrease in diameter and actuate a load responsive switch.

Abstract: A card reader utilizing an array of magnetically-operable solid state switches for reading magnetically coded cards. Magnets are employed to provide magnetic fields of sufficient strengths from poles of specific polarity to trigger or actuate some or all of the solid state switches. An array or matrix of the magnetically-operable solid state switches are provided in combination with a magnet-carrying block having magnets disposed therein. In several embodiments the magnets are slidably mounted in the block and are adapted to be attracted or repelled by a properly coded card having magnetized spots arranged in a predetermined pattern therein. In two preferred embodiments the card reader is combined with a card-operable magnetic lock. In that embodiment some of the magnets in the magnet-carrying block function as locking elements or tumblers.