(under subclass 421) Subject matter comprising a detector responsive to changes in the radial dimension of a coil, which detector serves as a material condition information
input component of the tension regulating system.
SEE OR SEARCH THIS CLASS, SUBCLASS:
333.5, and 334.5, for a coil diameter sensor for regulating an information-bearing carrier.
413.2, for a coil diameter sensor for regulating tension in a take-up coil drive
SEE OR SEARCH CLASS
200, Electricity: Circuit Makers and Breakers,
61.15, for a switch designed to be actuated in response to a quantity of wound material.
