Delay detonator

Details Delay detonator Delay detonator

1981-04-27

1984-02-07

Schafer, Richard E.

Ammunition and explosives

Igniting devices and systems

Electrical primer or ignitor

1022025, 102204, C06C 700, F42C 1910, F42C 1912

Patent

active

044296320

ABSTRACT:
Improved uniformity of timing, and particularly reduced sensitivity of timing to minor variations in delay charge size, are achieved in delay detonators by placing a loose load of a flame-sensitive ignition composition between a pressed delay charge and an ignition assembly, e.g., a percussion primer, at the actuation end of the detonator. The loose ignition charge has a free surface and is adapted to be ignited in response to direct contact with flame emitted from the ignition of a charge in the ignition assembly. Preferably, the delay charge is pressed into a plastic carrier which, in a non-electric detonator, has an open end terminating between the walls of the detonator shell and a primer shell that closes the actuation end of the detonator, and the ignition charge is loosely loaded into a metal capsule seated against the delay charge.

REFERENCES:
patent: 1928206 (1933-09-01), Large
patent: 2268372 (1941-12-01), Burrows
patent: 2761386 (1956-09-01), Zebree
patent: 2773447 (1956-12-01), Hall et al.
patent: 2878752 (1959-03-01), Johnson et al.
patent: 2991714 (1961-07-01), Noddin
patent: 2999460 (1961-09-01), Stinger et al.
patent: 3021786 (1962-02-01), Miller et al.
patent: 3158097 (1964-11-01), Brockway et al.
patent: 3173367 (1965-03-01), Shinpaugh
patent: 3188914 (1965-06-01), Dahl
patent: 3286628 (1966-11-01), Young et al.
patent: 3556009 (1971-01-01), Thatcher
patent: 3587467 (1971-06-01), Menke
patent: 3709149 (1962-02-01), Miller et al.
patent: 4335652 (1982-06-01), Bryan
Co-pending U.S. patent application Ser. No. 77,718, filed 9/21/79.
Co-pending U.S. patent application Ser. No. 177,210, filed 8/11/80.

Affiliated with

Also associated with

Rating

Delay detonator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Delay detonator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Delay detonator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2156800