C - Chemistry – Metallurgy – 06 – C
Patent
C - Chemistry, Metallurgy
06
C
102/30, 102/8
C06C 5/04 (2006.01) C06C 5/00 (2006.01)
Patent
CA 1313973
ABSTRACT OF THE DISCLOSURE Blasting signal transmission tube comprising a length of elongated flexible hollow tube and a self-oxidizing combustible substance disposed within the tube for transmitting a blasting signal along the interior of the tube length, the hollow tube having a varying interior axial cross-sectional area at longitudinally spaced intervals along the tube length for reducing and controlling the velocity of the blasting signal. Also, a process for producing signal transmission tube comprising forming a length of elongated flexible hollow tube of predetermined interior cross section area; depositing a self-oxidizing combustible substance within the tube for transmitting a blasting signal along the interior of the tube length without destroying the tube; and introducing a plurality of discrete restrictions reducing the predetermined hollow tube interior cross-sectional area at longitudinally spaced intervals along the tube length for reducing and controlling the velocity of the blasting signal.
565479
Gladden Ernest L.
Tavelli Sanford B.
Smart & Biggar
The Ensign-Bickford Company
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