Initiation of blasting detonators

Details Initiation of blasting detonators Initiation of blasting detonators

1977-05-13

1979-06-05

Jordan, Charles T.

Ammunition and explosives

Igniting devices and systems

102206, 361251, F42D 500

Patent

active

041570693

ABSTRACT:
A method and device for the initiating of a number of electrical detonators by a blasting machine of the type in which a capacitor is charged, the level of the charge being measured by level-sensing units and detonators are initiating by the electrical energy stored in the capacitor by firing after the charge level has reached a given level. The charge level of the capacitor is limited to a range which takes into account the variations of the load between different initiation moments such that the current impulse provided to each detonator assumes a value between a minimum and maximum limit. The limits for each individual load within the operating range of the apparatus is regulated in accordance with the electrical and physical characteristics of the detonators so that safe initiation and a disburance-free firing process are obtained.

REFERENCES:
patent: 3141114 (1964-07-01), Jenkins et al.
patent: 3704393 (1972-11-01), Digney, Jr. et al.
patent: 3721885 (1973-03-01), McKeown et al.
patent: 3721886 (1973-03-01), Phinney et al.
patent: 3752081 (1973-08-01), McKeown et al.

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