US3169480A - Safety device for detonator cord - Google Patents

Safety device for detonator cord Download PDF

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Publication number
US3169480A
US3169480A US191542A US19154262A US3169480A US 3169480 A US3169480 A US 3169480A US 191542 A US191542 A US 191542A US 19154262 A US19154262 A US 19154262A US 3169480 A US3169480 A US 3169480A
Authority
US
United States
Prior art keywords
barrier
detonator cord
detonating
charge
detonation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US191542A
Inventor
Frederick R Seavey
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BARCLAYS/AMERICAN/BUSINESS CREDIT Inc A CORP OF CT
Commercial Solvents Corp
Original Assignee
Commercial Solvents Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Commercial Solvents Corp filed Critical Commercial Solvents Corp
Priority to US191542A priority Critical patent/US3169480A/en
Application granted granted Critical
Publication of US3169480A publication Critical patent/US3169480A/en
Anticipated expiration legal-status Critical
Assigned to TROJAN CORPORATION, A CORP. OF DE. reassignment TROJAN CORPORATION, A CORP. OF DE. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: INTERNATIONAL MINERALS & CHEMICALS CORPORATION
Assigned to BARCLAYS/AMERICAN/BUSINESS CREDIT, INC., A CORP. OF CT. reassignment BARCLAYS/AMERICAN/BUSINESS CREDIT, INC., A CORP. OF CT. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: TROJAN CORPORATION
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42D—BLASTING
    • F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
    • F42D1/04—Arrangements for ignition
    • F42D1/042—Logic explosive circuits, e.g. with explosive diodes

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)

Description

Feb. 16, SEAVEY SAFETY DEvCE FOR DETONATOR CORD Filed May 1 1962

Claims (1)

1. A CONNECTING DEVICE FOR CONNECTING TWO LENGTHS OF DETONATOR CORD AND PERMITTING DETONATION BETWEEN THE TWO LENGTHS IN ONLY ONE DIRECTION COMPRISING A TUBULAR SHELL HAVING AN INNER DIAMETER SUBSTANTIALLY EQUAL TO THE OUTER DIAMETER OF THE DETONATOR CORD AND A UNIDIRECTIONAL DETONATING UNIT POSITIONED WITHIN SAID SHELL CONSISTING ESSENTIALLY OF IN THE DIRECTION OF DETONATION A BAFFLE SECTION AND A DETONATING CHARGE SECTION, SAID SHELL HAVING A SUFFICIENT LENGTH TO PROVIDE ON EACH SIDE OF SAID DETONATING UNIT A SPACE ADAPTED FOR THE INSERTION OF A LENGTH OF DETONATOR CORD, SAID BAFFLE SECTION CONSISTING ESSENTIALLY OF A FIRST BARRIER, SAID DETONATING CHARGE SECTION COMPRISING IN SEQUENCE ARRANGED ADJACENT EACH OTHER IN THE DIRECTION OF DETONATION AN EXPLOSIVE INITIATING CHARGE, A SECONDARY EXPLOSIVE CHARGE AND A SECOND BARRIER, SAID FIRST BARRIER AND SAID INITIATING CHARGE BEING SPACED APART TO DEFINE THEREBETWEEN AN ENCLOSED AIR GAP EXTENDING FROM SAID FIRST BARRIER TO SAID INITIATING CHARGE, SAID FIRST BARRIER BEING RUPTURABLE BY THE DETONATION OF A DETONATOR CORD ADJACENT THERETO TO TRANSMIT SUFFICIENT DETONATING ENERGY FROM THE REACTION OF A DETONATOR CORD ADJACENT SAID FIRST BARRIER ACROSS SAID AIR GAP TO DETONATE SAID INITIATING CHARGE, THE AXIAL DISTANCE OCCUPIED BY SAID AIR GAP BEING SUFFICIENT TO PREVENT THE TRANSMISSION OF SUFFICIENT DETONATING ENERGY FROM THE REACTION OF THE INITIATING AND SECONDARY CHARGES ACRSS THE AIR GAP TO DETONATE A DETONATOR CORD ADJACENT TO THE FIRST BARRIER.
US191542A 1962-05-01 1962-05-01 Safety device for detonator cord Expired - Lifetime US3169480A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US191542A US3169480A (en) 1962-05-01 1962-05-01 Safety device for detonator cord

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US191542A US3169480A (en) 1962-05-01 1962-05-01 Safety device for detonator cord

Publications (1)

Publication Number Publication Date
US3169480A true US3169480A (en) 1965-02-16

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ID=22705905

Family Applications (1)

Application Number Title Priority Date Filing Date
US191542A Expired - Lifetime US3169480A (en) 1962-05-01 1962-05-01 Safety device for detonator cord

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US (1) US3169480A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3368485A (en) * 1966-04-08 1968-02-13 Robert L. Klotz Nonexplosive detonating fuse directional interrupter
US3447464A (en) * 1967-09-28 1969-06-03 Us Navy Explosive time delay
US3460477A (en) * 1967-12-26 1969-08-12 Explosive Tech One-way detonation transfer device and assembly
US3728965A (en) * 1965-06-30 1973-04-24 Us Navy Explosive circuits
US4215631A (en) * 1971-02-25 1980-08-05 The United States Of America As Represented By The Secretary Of The Navy Sealed pyrotechnic delay
US4612857A (en) * 1984-07-16 1986-09-23 Mcdonnell Douglas Corporation Ballistic gas fired device
US5413046A (en) * 1994-03-11 1995-05-09 The Ensign-Bickford Company Shock tube assembly
US6415716B1 (en) 2001-02-16 2002-07-09 The United States Of America As Represented By The Secretary Of The Navy Line charge assembly and system for use in shallow-water clearing operations
US6499405B1 (en) * 1999-08-24 2002-12-31 Francesco Ambrico Connection and delay pyrotechnic device
CN103759593A (en) * 2014-01-29 2014-04-30 中国科学技术大学 Single-direction detonating door element with delay function and using method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2736263A (en) * 1956-02-28 Blasting explosive device
US2823609A (en) * 1953-04-15 1958-02-18 Du Pont Device for seismic prospecting
US2913982A (en) * 1952-12-29 1959-11-24 Hercules Powder Co Ltd Priming device
DE1086609B (en) * 1957-09-10 1960-08-04 Du Pont Explosives valve or relay arrangement
US3020844A (en) * 1958-12-29 1962-02-13 Du Pont Explosive device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2736263A (en) * 1956-02-28 Blasting explosive device
US2913982A (en) * 1952-12-29 1959-11-24 Hercules Powder Co Ltd Priming device
US2823609A (en) * 1953-04-15 1958-02-18 Du Pont Device for seismic prospecting
DE1086609B (en) * 1957-09-10 1960-08-04 Du Pont Explosives valve or relay arrangement
US3020844A (en) * 1958-12-29 1962-02-13 Du Pont Explosive device

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3728965A (en) * 1965-06-30 1973-04-24 Us Navy Explosive circuits
US3368485A (en) * 1966-04-08 1968-02-13 Robert L. Klotz Nonexplosive detonating fuse directional interrupter
US3447464A (en) * 1967-09-28 1969-06-03 Us Navy Explosive time delay
US3460477A (en) * 1967-12-26 1969-08-12 Explosive Tech One-way detonation transfer device and assembly
US4215631A (en) * 1971-02-25 1980-08-05 The United States Of America As Represented By The Secretary Of The Navy Sealed pyrotechnic delay
US4612857A (en) * 1984-07-16 1986-09-23 Mcdonnell Douglas Corporation Ballistic gas fired device
US5413046A (en) * 1994-03-11 1995-05-09 The Ensign-Bickford Company Shock tube assembly
WO1995024365A1 (en) * 1994-03-11 1995-09-14 The Ensign-Bickford Company Shock tube assembly
US6499405B1 (en) * 1999-08-24 2002-12-31 Francesco Ambrico Connection and delay pyrotechnic device
US6415716B1 (en) 2001-02-16 2002-07-09 The United States Of America As Represented By The Secretary Of The Navy Line charge assembly and system for use in shallow-water clearing operations
CN103759593A (en) * 2014-01-29 2014-04-30 中国科学技术大学 Single-direction detonating door element with delay function and using method thereof
CN103759593B (en) * 2014-01-29 2017-01-11 中国科学技术大学 Single-direction detonating door element with delay function and using method thereof

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Legal Events

Date Code Title Description
AS Assignment

Owner name: TROJAN CORPORATION, P.O. BOX 310 SPANISH FORK, UT.

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:INTERNATIONAL MINERALS & CHEMICALS CORPORATION;REEL/FRAME:003962/0694

Effective date: 19820122

AS Assignment

Owner name: BARCLAYS/AMERICAN/BUSINESS CREDIT, INC., 111 FOUND

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:TROJAN CORPORATION;REEL/FRAME:003984/0057

Effective date: 19820122