Signal transmission fuse

Ammunition and explosives – Igniting devices and systems – Fuse cord

Reexamination Certificate

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Details

C102S275100

Reexamination Certificate

active

07434515

ABSTRACT:
A small diameter shock tube of unique internal surface configuration such that the powder loading per meter of tubing can be higher than achieved with conventional shock tube. The outside diameter of the tube is less than 0.10″, preferably 0.085″ with inner and outer layers of different polymeric material bonded together in a coextrusion process. The inside surface of the shock tube has radially inwardly projecting ribs or protuberances that result in an increase of the internal perphi of the inner surface cross section achieving a 30% increase so that powder loading per meter of the tube can be kept in a safe range.

REFERENCES:
patent: 3590739 (1971-07-01), Persson
patent: 4290366 (1981-09-01), Janoski
patent: 4328753 (1982-05-01), Kristensen et al.
patent: 4817673 (1989-04-01), Zoghby et al.
patent: 5212341 (1993-05-01), Osborne et al.
patent: 5435249 (1995-07-01), Brent et al.
patent: 5597973 (1997-01-01), Gladden et al.
patent: 6647887 (2003-11-01), Smith et al.
patent: 6688231 (2004-02-01), Herrmann

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