Patent ID: 6298784
Filing Date: 2001-10-09
Classification: C06B,C06C,F42B

Abstract:
A heat transfer delay for providing a delay time in propellant, pyrotechnic, and explosive devices, the delay comprising:a housing, comprising a first heat source cavity and a second heat source cavity, and a heat transfer bridge connecting the first and second heat source cavities; a pyrotechnic heat source in thermal contact with the first heat source cavity, and a non-detonating autoignition material in thermal contact with the second heat source cavity; whereinupon ignition and combustion or reaction, the pyrotechnic heat source generates an amount of heat sufficient to heat the first heat source cavity to a temperature sufficiently high to cause a transfer of a sufficient amount of heat through the heat transfer bridge to the second heat source cavity to heat the cavity to a temperature sufficiently high to ignite the non-detonating autoignition material, and produce a non-detonating thermal output therefrom, and whereinthe heat transfer bridge conducts heat at a rate such that a delay time of at least about 0.5 second elapses between ignition of the heat source and ignition of the non-detonating autoignition material.