Non-electric double delay borehole downline unit for blasting op

Details Non-electric double delay borehole downline unit for blasting op Non-electric double delay borehole downline unit for blasting op

1975-02-10

1976-10-26

Pendegrass, Verlin R.

Ammunition and explosives

Igniting devices and systems

102 22R, C06C 506

Patent

active

039877329

ABSTRACT:
A non-electric double delay borehole downline unit is provided for delaying transmission of an explosive signal down a borehole and also delaying initiation of the charge within the borehole after the signal has been received therein. The double delay unit comprises a length of flexible impulse propagating tubing having first and second ends and an impulse propagating hollow channel extending along the length thereof, a non-electric high strength blasting cap containing a first delay element connected to the first end for initiating a borehole explosive charge, an impulse amplifying and transmitting cap containing a second delay element connected to the second end and a protective block having a plurality of elongated apertures with one of said apertures fully and snugly receiving the amplifying cap therein.

REFERENCES:
patent: 927968 (1909-07-01), Harle
patent: 3420174 (1969-01-01), Potter
patent: 3590739 (1971-07-01), Persson
patent: 3709149 (1973-01-01), Driscoll
patent: 3739724 (1973-06-01), Tlam
patent: 3878785 (1975-04-01), Lundborg

Affiliated with

Also associated with

Rating

Non-electric double delay borehole downline unit for blasting op does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Non-electric double delay borehole downline unit for blasting op, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-electric double delay borehole downline unit for blasting op will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-179147