GB862987A - Improvements in electrical primers - Google Patents
Improvements in electrical primersInfo
- Publication number
- GB862987A GB862987A GB34514/58A GB3451458A GB862987A GB 862987 A GB862987 A GB 862987A GB 34514/58 A GB34514/58 A GB 34514/58A GB 3451458 A GB3451458 A GB 3451458A GB 862987 A GB862987 A GB 862987A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrode
- layer
- conductive
- bioxide
- metalloid
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C19/00—Details of fuzes
- F42C19/08—Primers; Detonators
- F42C19/12—Primers; Detonators electric
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B3/00—Blasting cartridges, i.e. case and explosive
- F42B3/10—Initiators therefor
- F42B3/12—Bridge initiators
- F42B3/13—Bridge initiators with semiconductive bridge
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Thermistors And Varistors (AREA)
- Spark Plugs (AREA)
Abstract
862,987. Ammunition primers. BREVETS AERO-MECANIQUES S. A. Oct. 28, 1958 [Oct. 29, 1957], No. 34514/58. Class 9(1). An electric primer for explosive or propellent charges comprises two metal electrodes 2, 3 connected to a condenser 1, an element 4 of semi-conductive material being placed between the electrodes adjacent priming 5, so that on closing a key in the condenser circuit a spark is produced in the element 4 which ignites the charge 5. The semi-conductive material is a solid of crystalline structure which is non-conducting near 0‹K but at higher temperatures has an electronic conductivity or acquires such conductivity when its structure is disturbed or can be made conductive by external influences. The element 4 may be a metalloid or an anhydride of a metalloid having a relatively low melting point and a boiling point such that it evaporates under vacuum. Examples given include selenium, germanium, vanadium pentoxide, silicon monoxide, cerium bioxide, cadmium sulphide, and uranium bioxide. The element 4 is preferably in the form of a thin layer, e.g. one micron thick, deposited on an insulator 6 of synthetic resin or ceramic material inserted in electrode 3 and surrounding electrode 2. A conductive layer 7, which may be a metal such as indium, covers the layer 4 and contacts the electrode 3 along its periphery. A conductive ring 8 is forced into the sleeve 3 against the layer 7 and houses the priming 5. Instead of the layer 7, a thin conducting wire may extend radially over film 4 from the electrode 2 to the electrode 3.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
LU355379X | 1957-10-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB862987A true GB862987A (en) | 1961-03-15 |
Family
ID=19732639
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB34514/58A Expired GB862987A (en) | 1957-10-29 | 1958-10-28 | Improvements in electrical primers |
Country Status (6)
Country | Link |
---|---|
US (1) | US3019732A (en) |
CH (1) | CH355379A (en) |
DE (1) | DE1115629B (en) |
FR (1) | FR1213110A (en) |
GB (1) | GB862987A (en) |
LU (1) | LU35542A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996030714A1 (en) * | 1995-03-31 | 1996-10-03 | Davey Bickford | Electroexplosive initiator, method for making same, and vehicle safety system |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL251162A (en) * | 1959-05-04 | |||
US3196041A (en) * | 1960-11-25 | 1965-07-20 | Gen Lab Associates Inc | Method of making a semiconductor gap for an initiator |
US3198117A (en) * | 1961-10-02 | 1965-08-03 | Bendix Corp | Electrically triggered squib with semiconductive dissipater for stray currents |
US3211096A (en) * | 1962-05-03 | 1965-10-12 | Texaco Experiment Inc | Initiator with a p-n peltier thermoelectric effect junction |
BE633725A (en) * | 1963-06-18 | |||
US3298306A (en) * | 1964-05-26 | 1967-01-17 | Bendix Corp | Electro-explosive device |
US3257946A (en) * | 1964-07-16 | 1966-06-28 | Bendix Corp | Electrically triggered squib |
US3249049A (en) * | 1964-07-31 | 1966-05-03 | Zimmerman Theodore | Ballistic primer |
US3257947A (en) * | 1964-12-17 | 1966-06-28 | Ernest E Mallory | Shock focusing explosive initiator |
US3557699A (en) * | 1968-06-26 | 1971-01-26 | Olin Mathieson | Electroexplosive primer ignition assembly |
BE794600A (en) * | 1972-01-28 | 1973-05-16 | Usel Hubert | CARTRIDGE WITHOUT CASE FOR ELECTRIC FIRE |
DE2232049C2 (en) * | 1972-06-30 | 1984-03-01 | Jakobs, Ferdinand, 6601 Quierschied | Combined primer for electric and impact ignition |
DE2451370C2 (en) * | 1974-10-29 | 1986-05-15 | Hubert Inzing Tirol Usel | Electric detonator for caseless propellant charges and process for the manufacture of such detonators |
US4170922A (en) * | 1977-09-16 | 1979-10-16 | The United States Of America As Represented By The Secretary Of The Navy | Ignitor |
US4206707A (en) * | 1977-11-22 | 1980-06-10 | General Dynamics Corportation | Electromagnetic hazard suppression techniques |
SE434191B (en) * | 1980-05-27 | 1984-07-09 | Bofors Ab | ELTENDDON, PREPARED FOR ARTILLERY AMMUNITION |
CH663089A5 (en) * | 1984-05-21 | 1987-11-13 | Inventa Ag | POLE BODY FOR AN ELECTRIC IGNITION DEVICE, METHOD FOR THE PRODUCTION THEREOF AND THE USE THEREOF. |
US4708060A (en) * | 1985-02-19 | 1987-11-24 | The United States Of America As Represented By The United States Department Of Energy | Semiconductor bridge (SCB) igniter |
GB2190730B (en) * | 1986-05-22 | 1990-10-24 | Detonix Close Corp | Detonator firing element |
AU614870B2 (en) * | 1988-09-01 | 1991-09-12 | Orica Explosives Technology Pty Ltd | A method of controlling a blasting operation |
US5052301A (en) * | 1990-07-30 | 1991-10-01 | Walker Richard E | Electric initiator for blasting caps |
US5431101A (en) * | 1991-04-16 | 1995-07-11 | Thiokol Corporation | Low cost hermetically sealed squib |
US5230287A (en) * | 1991-04-16 | 1993-07-27 | Thiokol Corporation | Low cost hermetically sealed squib |
US5262727A (en) * | 1992-02-20 | 1993-11-16 | Varian Associates, Inc. | NMR probe |
US6199484B1 (en) | 1997-01-06 | 2001-03-13 | The Ensign-Bickford Company | Voltage-protected semiconductor bridge igniter elements |
US5992326A (en) * | 1997-01-06 | 1999-11-30 | The Ensign-Bickford Company | Voltage-protected semiconductor bridge igniter elements |
US6910420B1 (en) * | 2003-03-04 | 2005-06-28 | The United States Of America As Represented By The Secretary Of The Navy | Electrical initiation system |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US319627A (en) * | 1885-06-09 | Samuel russell | ||
US319628A (en) * | 1885-06-09 | samuel eussell | ||
US2021661A (en) * | 1932-11-17 | 1935-11-19 | Dispersion Cathodique Sa | Electrical heating element of large surface for low temperatures |
GB637057A (en) * | 1948-03-04 | 1950-05-10 | Rotax Ltd | Frequency selective switching apparatus for use in alternating electric current supply systems |
US2708877A (en) * | 1948-06-23 | 1955-05-24 | Smitsvonk Nv | Low tension igniter for explosives |
US2676117A (en) * | 1949-04-18 | 1954-04-20 | Libbey Owens Ford Glass Co | Light transmissive electrically conducting optical article |
US2696191A (en) * | 1951-10-17 | 1954-12-07 | William E Sheehan | Electrically operated primer |
US2762302A (en) * | 1951-11-16 | 1956-09-11 | Norman A Macleod | Electric detonator |
US2754757A (en) * | 1951-11-16 | 1956-07-17 | Norman A Macleod | Electrical detonator for explosives |
BE556596A (en) * | 1956-04-30 |
-
0
- LU LU35542D patent/LU35542A1/xx unknown
-
1958
- 1958-10-02 CH CH355379D patent/CH355379A/en unknown
- 1958-10-13 DE DEB50713A patent/DE1115629B/en active Pending
- 1958-10-21 US US768634A patent/US3019732A/en not_active Expired - Lifetime
- 1958-10-27 FR FR1213110D patent/FR1213110A/en not_active Expired
- 1958-10-28 GB GB34514/58A patent/GB862987A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996030714A1 (en) * | 1995-03-31 | 1996-10-03 | Davey Bickford | Electroexplosive initiator, method for making same, and vehicle safety system |
FR2732455A1 (en) * | 1995-03-31 | 1996-10-04 | Davey Bickford | ELECTROPYROTECHNICAL INITIATOR, PROCESS FOR MAKING SUCH AN INITIATOR AND SAFETY SYSTEM FOR VEHICLE |
US5942717A (en) * | 1995-03-31 | 1999-08-24 | Davey Bickford | Electro-pyrotechnic initiator, method for making same, and vehicle safety system |
Also Published As
Publication number | Publication date |
---|---|
US3019732A (en) | 1962-02-06 |
CH355379A (en) | 1961-06-30 |
DE1115629B (en) | 1961-10-19 |
LU35542A1 (en) | |
FR1213110A (en) | 1960-03-29 |
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