公开(公告)号：EP0807095A4

公开(公告)日：2000-04-26

申请号：EP95933780

申请日：1995-09-11

申请人： ENSIGN BICKFORD CO

发明人： GLADDEN ERNEST L ,  THURESON GARY R ,  ZAPPALORTI ALVARO ,  DAVIS ERIC R ,  LUCCA FRANK J

IPC分类号： C06B45/00 ,  C06C5/04

CPC分类号： C06C5/04

摘要： A signal transmission fuse (10, 20) such as shock tube has an outside diameter (OD) not greater than about 2.380 mm (0.0937 inch), for example, a tube outside diameter (OD) of from about 0.397 to 2.380 mm (about 0.0156 to 0.0937 inch), and the ratio of the inside diameter (ID) of the tube to the radial thickness of the tube wall (T) is from about 0.18 to 2.5. The inside diameter (ID) of the tube may be from about 0.198 to 1.321 mm (about 0.0078 to 0.0520 inch). The powder surface density of the reactive material contained within the bore (16, 30) of the fuse (10, 20) may, but need not, be significantly less than that which the prior art considers to be a minimum acceptable powder surface density. Other things, such as the cost of the material used being equal, signal transmission fuse (10, 20) of the present invention is lower in cost than conventional standard sized fuse because of its reduced diameter, and yet has good stiffness and tensile strength so as to enable it to be successfully deployed and used in the same manner as standard size signal transmission fuse.

公开(公告)号：EP0787114A4

公开(公告)日：1999-10-20

申请号：EP95939082

申请日：1995-10-13

申请人： ENSIGN BICKFORD CO

发明人： THURESON GARY R ,  DAVIS ERIC R ,  ZAPPALORTI ALVARO ,  GLADDEN ERNEST L

IPC分类号： C06C5/04 ,  C06C7/00 ,  F42B3/185 ,  C06C5/06

CPC分类号： C06C5/04 ,  C06C7/00 ,  F42B3/185

摘要： An isolation member (34) for use in a non-electric detonator cap (10) has an interior passageway (40) extending therethrough and defining a positioning region (44) and a discharge port (56). Positioning region (44) provides a series of interior shoulders (46, 48) and an entry shoulder (52) respectively sized to receive and seat therein signal transmission lines of different outside diameters, thereby longitudinally orienting and spacing the signal-emitting end (30a) from the receptor charge (14). The isolation member (34) is preferably made of a semi-conductive material to bleed off to the shell (12) any static electricity charges transmitted through the signal transmission line (shock tube 30) so as to prevent static discharge initiation of the receptor charge (14).