Ammunition and explosives – Igniting devices and systems
Patent
1976-08-16
1977-12-20
Pendegrass, Verlin R.
Ammunition and explosives
Igniting devices and systems
F42D 502
Patent
active
040635104
ABSTRACT:
A process for indirectly detecting a misfired explosive (cartridge) which comprises charging a ferrite magnet as a tracer in an explosive charging portion together with an explosive in a blasting method and detecting the magnetic flux of said magnet charged in a misfired explosive cartridge at a site of explosion after blasting by a magnet measuring instrument, characterized by using as said tracer a ferrite magnet calcined at a temperature less than 1000.degree. C. and detecting this magnet by said magnetic detector.
REFERENCES:
patent: 3082689 (1963-03-01), Griffith et al.
patent: 3772099 (1973-11-01), Ryan et al.
patent: 3954058 (1976-05-01), Sanders et al.
Abe Kohei
Ishii Yasuo
Nishimura Naozumi
Pendegrass Verlin R.
Taisei Kensetsu Kabushiki Kaisha
Tohoku Kinzoku Kogyo Kabushiki Kaisha
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