Coin detection apparatus

Details Coin detection apparatus Coin detection apparatus

1995-06-15

1996-12-03

Bartuska, F. J.

Check-actuated control mechanisms

Including means to test validity of check

By testing material composition

29605, 336 15, 336170, 336183, 336233, G07D 508, H01F 2724, H01F 2728, H01F 4106

Patent

active

055798870

ABSTRACT:
A differential type sensing unit which includes a winding core having a winding shaft is described. In one embodiment, a post extends from the winding shaft and is located intermediate first and second winding ends of the winding shaft. The post facilitates reversing the winding direction of a conductor wound on the winding shaft. The conductor is wound such that the sensing unit includes a first sensing coil and a second sensing coil formed in a series opposing configuration. The sensing unit may be integrated with a driving unit to include driving coils formed over the top of the sensing coils.

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