Patent ID: 6169481
Filing Date: 2001-01-02
Classification: G08B

Abstract:
A method of verifying manufacturing operations in the assembly of multi-component products comprising the steps of: (a) selecting one critical component of a multi-component product composed of a critical component necessary to the product and components other than the critical component; (b) prior to assembly of the multi-component product attaching to the critical component and not to the other components a plurality of magnetizable filaments; (c) assembling the critical component with the other components into the multi-component product, (d) exposing the assembled multi-component product to an oscillating electromagnetic waveform; (e) detecting a distortion of the waveform unique to the magnetizable filaments of the critical component caused by saturation of the magnetizable filaments to detect the presence of the critical component; and (f) providing an output signal indicating proper assembly of the multi-component product with the critical component.