Primer assembly

Details Primer assembly Primer assembly

1982-05-17

1984-01-17

Jordan, Charles T.

Ammunition and explosives

Igniting devices and systems

Holders for fuse or fuse cord to blasting cartridge,...

102200, 10220212, 102322, F42B 310, F42C 1908

Patent

active

044258496

ABSTRACT:
A primer assembly is provided for use in vertical boreholes wherein the primer charge is initiated by means of electric blasting caps, the electric caps, in turn, being initiated electromagnetically. A covered, cup-shaped primer assembly contains a toroid transformer element and connected electric blasting cap in detonating relationship with a primer explosive charge. The assembly is arranged to receive therethrough a looped wire conductor which conductor passes freely through the toroid transformer. When an energy source is coupled to the looped conductor, a magnetic flux is induced in the toroid transformer which sets off the cap and primer charge. The assembly may be passed freely or slid along the looped conductor to any location in the borehole. The assembly permits the use of electric time-delay, deck-charge blasting without the usual hazards associated with normal electric cap blasting.

REFERENCES:
patent: 3793954 (1974-02-01), Johnston
patent: 3931763 (1976-01-01), Bluhm
patent: 4133247 (1979-01-01), Calder, Jr. et al.
patent: 4178852 (1979-12-01), Smith et al.
patent: 4295424 (1981-10-01), Smith et al.
patent: 4334476 (1982-06-01), Day et al.
patent: 4383484 (1983-05-01), Morrey

Affiliated with

Also associated with

Rating

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

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-696194