Patent ID: 7112752

Claim:
A system for delaying activation of a powered device intended to operate remotely in an environment in which an environmental attribute changes from a first value to a second value, comprising: a housing; a restraining component proximally associated with said housing, said restraining component being separable from said housing upon exposure to an environment having an environmental attribute less than or about equal to said second value; a normally closed electrical circuit disposed in said housing; said circuit having a power source connected with the powered device, whereby the powered device is powered upon the closing of said circuit; said circuit having a switch sensitive to the presence of said restraining component; said switch being configured to open said circuit in the presence of said restraining component and to close said circuit in the absence of said restraining component; whereby when said housing encounters an environment having said environmental attribute less than or about equal to said second value, said restraining component separates from said housing and said circuit closes, powering said powered device.