Patent ID: 6768415
Filing Date: 2004-07-27
Classification: G06K,H01H

Abstract:
A radio frequency identification device comprising:a housing; a battery supported in the housing and having first and second terminals of opposite polarity; transmitter circuitry in the housing configured to provide a modulated backscatter signal by reflecting or not reflecting a carrier signal provided by an interrogator to communicate with the interrogator, to identify the device in response to an interrogation signal by the interrogator; receiver circuitry in the housing, coupled to the transmitter circuitry, and configured to receive the interrogation signal; a push-on/push-off switch supported by the housing and controlling whether the circuitry provides the signal to identify the device by controlling whether or not the receiver is coupled to the battery, the switch including a first conductor formed of printed thick film and having a first end coupled to the first terminal of the battery and having a second end, a second conductor formed of printed thick film and having a first end coupled to the receiver and having a second end spaced apart from the second end of the first conductor, an insulating ring having a periphery circumscribing the second end of the first conductor and the second end of the second conductor, and a diaphragm having a periphery corresponding to the periphery of the insulating ring and having a conductive face facing the second end of the first conductor and the second end of the second conductor, the conductive face of the diaphragm being biased, by the insulating ring, away from coupling the first and second conductors; and a latch coupled between the receiver and the switch such that each actuation of the switch toggles the receiver between being coupled to the battery and being uncoupled from the battery.