Patent ID: 9027840
Filing Date: 2015-05-12
Classification: A47F,B05B,D06F,G01F,G01G,G06F,G06K,G09G,H01F,Y10T

Abstract:
1. A product sensor for use with an inductive reader adapted to generate a time-varying electromagnetic field, the product sensor comprising: a storage device for a product; a product sensor circuit separate from the inductive reader and supported by the storage device and including a secondary coil electrically coupled to a variable impendence element; and a heater element adapted to heat the product in response to the time-varying electromagnetic field, wherein the impedance of the variable impedance element varies in proportion to a characteristic of the product, and wherein the product sensor circuit has a reflected impedance in response to the time-varying electromagnetic field that varies as a function of the impedance of the variable impedance element, such that the characteristic of the product can be determined remotely by the inductive reader based on the reflected impedance of the product sensor circuit.