Shock tube tip tester

Details Shock tube tip tester Shock tube tip tester

2005-09-27

2008-12-02

Johnson, Stephen M (Department: 3641)

Measuring and testing

Ordnance and projectile

C073S862510, C073S862530

Reexamination Certificate

active

07458259

ABSTRACT:
A shock tube tip tester determines reliability of a shock tube tip used in a blasting machine. The blasting machine, using shock tubes for non-electric firing, relies on a shock tube tip to initiate the blast. The shock tube tip tester measures the amount of wear and indicates when a particular shock tube tip should be replaced to help prevent misfires or delays in production due to no-fires. The shock tube tip tester includes a mechanical filter suitable for filtering the shock wave pulse created by the shock tube tip, a pressure sensor for sensing the filtered shock wave pulse, and a microprocessor for classifying the shock tube tip into one of several predefined conditions based on either a peak of the shock wave pulse or an area under the shock wave pulse.

REFERENCES:
patent: 3260107 (1966-07-01), Rosen
patent: 4274282 (1981-06-01), Budraitis et al.
patent: 4489617 (1984-12-01), Smith
patent: 5052817 (1991-10-01), Bement et al.

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