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Wear Resistant Sensor Tip Disclosure Number: IPCOM000068770D
Original Publication Date: 1978-Feb-01
Included in the Prior Art Database: 2005-Feb-20

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Garriss, DS Vinal, AW [+details]


The figure illustrates a wear-resistant sapphire, ruby or other similar hard crystalline material cap applied to the tip 2 of a magnetic sensor head 1. The cap 3 may be attached by an adhesive or epoxy, and is ground to an approximately conical or spherical radius to match that of the sensor tip 2. The hardened cap 3 provides a solution to the tip wear problem encountered with hand wand magnetic scanning of magnetic stripe-bearing media. The cap 3 will be contoured with an interior ground cavity to match the exterior ground surface of the sensor tip 2.