Patent ID: 6405031
Filing Date: 2002-06-11
Classification: B29C,B29L,H04M

Abstract:
A wireless telephone system including a wireless telephone capable of use for telephonic communication only during a limited period, after which period the telephone is rendered inoperative for telephonic communication in the telephone system, the telephone comprising:telephonic means for transmitting and receiving telephonic communications; enabling/disabling means for enabling the telephonic means for telephonic communications during the limited period and disabling the telephonic means for telephonic communications upon expiration of the limited period, whereby the telephone is rendered inoperative beyond the limited period; selective operating means for operating the telephonic means for the transmission of selected telephonic communications of selected durations, the enabling/disabling means being responsive to the selective operating means such that telephonic communication is disabled for telephonic communications when the sum of the selected durations reaches the limited period; and encrypted signal means for transmitting an encrypted signal at all times during the transmission of the selected telephonic communications through the telephonic means; the telephone system including encrypted signal reading means remote from the telephone and responsive to a transmitted encrypted signal so as to maintain telephonic communication through the telephone system during transmission of the selected telephonic communications only when the transmitted encrypted signal is present and to discontinue telephonic communication through the telephone system upon any absence of the transmitted encrypted signal.