# US 5,703,320 A · Connector for blast initiation system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,703,320 A - Document ID: US5703320A - Status: Granted - Kind: A - Application number: 08/576,003 - Filed: 1996-01-18 - Granted: 1997-12-30 - Earliest claimed: 1996-01-18 - Assignees: The Ensign-Bickford Company - Inventors: Frank J. Lucca; Daniel P. Sutula, Jr.; Ronald M. Dufrane; Ernest L. Gladden - Web page: https://patentgrep.com/patent/US5703320A ## CPC - C06C 5/06: Fuse igniting means; Fuse connectors - F42D 1/043: {Connectors for detonating cords and ignition tubes, e.g. Nonel tubes (mounting of detonators in blasting cartridges F42B3/26)} - C06C: DETONATING OR PRIMING DEVICES; FUSES (ammunition fuzes F42C); CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS - F42D: BLASTING (fuses, e.g. fuse cords, C06C5/00; {for obtaining fluid from wells E21B43/00; for mining or quarrying E21C37/00; for making tunnels or galleries E21D9/006}; cartridges F42B3/00) ## Abstract A connector device (10, 214) for transferring a nonelectric blast initiation signal from a donor line (26, 224) to an acceptor line, e.g., an input stub (24, 217) has donor line retaining means (20a, 20b, 229) for disposing a donor line (26, 224) in signal transfer relation to the input stub (24, 217). An anvil member (27, 130, 226) is provided to support input stub (24, 217) at the point where it is in signal transfer relation with the donor line (26), preferably in conforming contact with the donor line (26). In a particular embodiment, the connector device has a body portion (10a) on which is retained a detonator cap (22). Cap (22) detonates upon receipt of a detonation signal from an input stub (24), optionally after a delay period if delay elements are incorporated into the cap 22. The connector device (10) has retainer spring clips (20a, 20b) for retaining the donor line (26) in signal transfer relation to the input stub (24). An output line retaining member (16) holds the output line (28) in signal transfer relation to the detonator cap (22). ## Claims ### Claim 1 A connector device for operatively coupling a brisant donor line in signal transfer relation with an acceptor line, the device comprising: an anvil member for supporting a portion of such acceptor line; and donor line retaining means for retaining such donor line in signal transfer relation with such portion of such acceptor line as is supported by the anvil member, the anvil member and the donor line retaining means facing each other and being respectively dimensioned and configured to retain the donor line and the acceptor line in conforming contact with each other. ### Claim 2 (depends on 1) The connector device of claim 1 wherein the donor line retaining means comprises at least one spring clip. ### Claim 3 (depends on 1) The connector device of claim 1 wherein the donor line retaining means comprises a shroud member. ### Claim 4 A connector device for operatively coupling a brisant donor line in signal transfer relation with an acceptor line, the device having an input end and an output end and comprising: a body portion comprising cap-retainer means for retaining a detonator cap having an input end from which protrudes an acceptor line comprising an input stub and an opposite signal-emitting end, the cap-retainer means being dimensioned and configured to retain such detonator cap with its input stub disposed at the input end of the device and its signal-emitting end disposed at the output end of the device; donor line retainer means carried on the device for retaining such brisant donor line at the input end of the body portion in signal transfer relation to the input stub of such detonator cap seated within the cap-retainer means; and output line retainer means carried on the device for retaining at least one output line at the output end of the body portion in signal transfer relationship with the signal-emitting end of such retained detonator cap. ### Claim 5 (depends on 4) The connector device of claim 4 further comprising anvil means disposed on the device for supporting such input stub at the point where it is in signal transfer relation with such donor line. ### Claim 6 (depends on 5) The connector device of claim 5 wherein the anvil means is dimensioned and configured to cooperate with donor line retainer means when such donor line is retained within the donor line retainer means and such detonator cap is seated within the cap-retainer means, to retain the input stub and such donor line in conforming contact with each other. ### Claim 7 (depends on 5, 6) The connector device of claim 5 or claim 6 in combination with the detonator cap seated within the cap-retainer means. ### Claim 8 (depends on 7) The connector device of claim 7 wherein the input stub comprises a length of signal transmission line selected from the group consisting of shock tube, deflagrating tube and low energy detonating cord. ### Claim 9 (depends on 7) The connector device of claim 7 wherein the input stub comprises a length of shock tube. ### Claim 10 (depends on 7) The connector device of claim 7 further including the brisant donor line disposed within the donor line retainer means in conforming contact with the input stub. ### Claim 11 (depends on 10) The connector device of claim 10 wherein at least a longitudinal segment of the donor line is of non-circular cross section to provide at least one flattened segment of the donor line, the flattened segment of the donor line being in disposed contact with the input stub. ### Claim 12 (depends on 11) The connector device of claim 11 wherein the flattened segment of the donor line has in cross section major and minor arc sections and a major arc section thereof is disposed in contact with the input stub. ### Claim 13 (depends on 11) The connector device of claim 11 wherein at least a longitudinal segment of the input stub is of non-circular cross section to provide at least one flattened segment of the input stub, the flattened segment of the inputs stub being disposed in contact with the donor line. ### Claim 14 (depends on 13) The connector device of claim 13 wherein the flattened segment of the input stub has in cross section major and minor arc sections, and a major arc section thereof is disposed in contact with the donor line. ### Claim 15 (depends on 4, 5, 6) The connector device of claim 4, claim 5 or claim 6 wherein the cap-retainer means comprises an enclosure portion defining a bore having a terminal end and being dimensioned and configured to receive and enclose at least the output end of the detonator cap with said output end received at the terminal end of the bore, and wherein the output line retainer means comprises an output line slot formed adjacent the terminal end of the bore, the output line slot being dimensioned and configured to retain therein at least one output line in signal transfer relation with-the detonator cap received in the bore. ### Claim 16 (depends on 15) The connector device of claim 15 wherein a signal transfer aperture extends between the terminal end of the bore and the output line slot. ### Claim 17 (depends on 4, 5, 6) The connector device of claim 4, claim 5 or claim 6 wherein the body portion comprises a pair of interconnecting members which, when connected one to the other, define a bore which has a terminal end and is dimensioned and configured to receive and enclose at least the output end of the detonator cap with the output end of the detonator cap received at the terminal end of the bore. ### Claim 18 (depends on 17) The connector device of claim 17 is wherein the bore is dimensioned and configured to enclose the entire length of the detonator cap. ### Claim 19 (depends on 17) The connector device of claim 17 wherein the pair of interconnecting members carry respective first and second locking means which lock the interconnecting members one to the other. ### Claim 20 (depends on 5, 6) The connector device of claim 5 or claim 6 wherein the output line retainer means comprises an output line slot that is open on one side of the body portion for insertion therein of an output line, and wherein the donor line retainer means comprises a donor line slot open on one side of the body portion for insertion therein of a donor line, and wherein the respective slots are open on the same side of the body portion. ### Claim 21 (depends on 20) The connector device of claim 20 wherein the output line slot and the donor line slot are open on respective opposite sides of the body portion. ### Claim 22 A connector device for operatively coupling a brisant donor line in signal transfer relation with an acceptor line, the device having an input end and an output end and comprising: a body portion comprising cap-retainer means comprising an enclosure portion defining a bore for receiving and enclosing at least the output end of a detonator cap having an input stub; a donor line retainer means attached to the body portion for retaining such brisant donor line at the input end of the body portion in signal transmission relation to the input stub; the detonator cap having an input end from which the input stub protrudes, and an output end, and being retained within the cap-retainer means with at least the output end of the detonator cap disposed in the bore and the input stub disposed towards the input end of the device and proximal to the donor line retainer means, the input stub comprising a length of signal transmission line; output line retainer means carried on the connector device for retaining at least one output line in signal transfer relation with the output end of the detonator cap; the enclosure portion further comprising a signal transfer aperture extending between the detonator bore and the output line slot; and anvil means for positioning the input stub and signal donor line in conforming contact with each other. ### Claim 23 (depends on 22) The connector device of claim 22 wherein the input stub comprises a signal transmission line of a length limited to connect only the donor line and the detonator cap in signal transfer communication. ### Claim 24 (depends on 22, 23) The connector device of claim 22 or claim 23 wherein at least one of the input stub and the donor line has at least a longitudinal segment thereof of non circular cross section to provide at least one flattened segment of at least one of the input stub and the donor line, and the flattened segment is disposed at the point of contact between the input stub and the donor line. ### Claim 25 (depends on 5, 6, 22, 23) The connector device of any one of claims 5, 6, 22 or 23 wherein the detonator cap is a delay detonator cap.