Ammunition and explosives – Igniting devices and systems – Ignition or detonation circuit
Patent
1980-02-07
1982-06-15
Jordan, Charles T.
Ammunition and explosives
Igniting devices and systems
Ignition or detonation circuit
102233, 102264, F42C 1540
Patent
active
043344755
ABSTRACT:
A fuse provided with a detonator which is ignited by an electrical ignition signal is described. The detonator has a first terminal normally connected to earth and supported by a rotatable member which can move the detonator from a first position in which it is unable to transmit ignition to the chain, to a second position in which a second terminal thereof is in contact with a contact element at which the ignition signal arrives. The rotatable member is rotated by the centrifugal and inertia forces acting on the fuse and is controlled by a delay device arranged to allow it to rotate in a predetermined time and during at least part of the rotation of the rotatable member, the second terminal of the detonator is maintained in electrical contact with the earth so as to make the detonator electrically inactive during the part of the rotation.
REFERENCES:
patent: 2446545 (1948-08-01), McCaslin
patent: 2975711 (1961-03-01), Brown et al.
patent: 4145971 (1979-03-01), Graham et al.
Fratelli Borletti S.p.A.
Jordan Charles T.
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