WO2019089635A1 - Coupelle d'amorce pour une amorce pourvue d'un matériau inflammable déposé - Google Patents

Coupelle d'amorce pour une amorce pourvue d'un matériau inflammable déposé Download PDF

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Publication number
WO2019089635A1
WO2019089635A1 PCT/US2018/058267 US2018058267W WO2019089635A1 WO 2019089635 A1 WO2019089635 A1 WO 2019089635A1 US 2018058267 W US2018058267 W US 2018058267W WO 2019089635 A1 WO2019089635 A1 WO 2019089635A1
Authority
WO
WIPO (PCT)
Prior art keywords
disk
edge portion
ledge
tube
thickness
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.)
Ceased
Application number
PCT/US2018/058267
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English (en)
Inventor
Timothy MOHLER
Daniel Yates
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.)
Spectre Enterprises Inc
Original Assignee
Spectre Enterprises Inc
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 Spectre Enterprises Inc filed Critical Spectre Enterprises Inc
Publication of WO2019089635A1 publication Critical patent/WO2019089635A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • F42C19/10—Percussion caps
    • 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
    • F42C19/0823—Primers or igniters for the initiation or the propellant charge in a cartridged ammunition
    • F42C19/083—Primers or igniters for the initiation or the propellant charge in a cartridged ammunition characterised by the shape and configuration of the base element embedded in the cartridge bottom, e.g. the housing for the squib or percussion cap

Definitions

  • the present invention relates to primers for firearms and other munitions. More specifically, a cup is provided for containing the ignitable material of a primer, and for holding the ignitable material within a firearm cartridge or within another munition.
  • Cartridges for firearms, as well as other munitions such as larger projectile cartridges and explosives are often ignited by a primer.
  • primers and detonators are made from a copper or brass alloy cup with a brass anvil and containing lead azide or lead styphnate.
  • the priming compound is crushed between the cup's base and the anvil, igniting the primer charge.
  • the burning primer then ignites another flammable substance such as smokeless powder, explosive substances, etc.
  • Lead azide and lead styphnate are hazardous due to their toxicity as well as their highly explosive nature. Additionally, present manufacturing methods are very labor-intensive, with the necessary manual processes raising costs, causing greater difficulty in maintaining quality control.
  • Energetic materials such as thermite are presently used when highly exothermic reactions are needed. Uses include cutting, welding, purification of metal ores, and enhancing the effects of high explosives. A thermite reaction occurs between a metal oxide and a reducing metal.
  • metal oxides include La 2 03, AgO, Th0 2 , SrO, Zr0 2 , U0 2 , BaO, Ce0 2 , B 2 0 3 , Si0 2 , V 2 0 5 , Ta 2 0 5 , NiO, Ni 2 0 3 , Cr 2 0 , Mo0 , P 2 0 5 , Sn0 2 , W0 2 , W0 , Fe 3 0 4 , CoO, Co 3 0 4 , Sb 2 0 , PbO, Fe 2 0 3 , Bi 2 0 3 , Mn0 2 , Cu 2 0, and CuO.
  • Example reducing metals include Al, Zr, Th, Ca, Mg, U, B, Ce, Be, Ti, Ta, Hf, and La. The reducing metal may also be in the form of an alloy or intermetallic compound of the above-listed metals.
  • a properly designed energetic material for example, that which is disclosed in US 2016/0102030, which was invented by K. R. Coffey et al. and published on April 14, 2016, would provide an effective alternative to presently used primer materials, as well as being safer to manufacture.
  • the entire disclosure of US 2016/0102030 is expressly incorporated herein by reference.
  • a primer cup is disclosed herein for easily installing such a primer within a conventional cartridge casing, or within another location that is designed to receive a conventional primer.
  • the primer comprises a tube having a side wall.
  • the tube defines a first open end, a second open end, a tube interior, and a central axis.
  • the second open end defines a ledge projecting towards the central axis.
  • the primer further comprises a disk having a first surface, a second surface, and an edge.
  • the disk is dimensioned and configured to fit within the interior of the tube with the periphery of the disk abutting the wall.
  • the disk has an ignitable material deposited upon the first surface.
  • the ledge of the tube is dimensioned and configured to resist passage of the disk therethrough.
  • the above-described needs are met by a cup for a primer.
  • the cup comprises a tube having a side wall.
  • the tube defines a first open end, a second open end, a tube interior, and a central axis.
  • the second open end defines a ledge projecting towards the central axis.
  • the primer further comprises a disk having a first surface, a second surface, and an edge.
  • the disk is dimensioned and configured to fit within the interior of the tube with the periphery of the disk abutting the wall.
  • the ledge of the tube is dimensioned and configured to resist passage of the disk therethrough.
  • Fig. 1 is a cross sectional view of a primer.
  • Fig. 2 is a side elevational view of a tube for a primer cup.
  • Fig. 3 is a cross-sectional view of the tube for a primer cup of Fig. 2, taken along the lines A-A in Fig. 1.
  • Fig. 4 is a top plan view of a tube for a primer cup of Fig. 2.
  • Fig. 5 is a perspective view of a tube for a primer cup of Fig. 2.
  • Fig. 6 is a top plan view of a disk for a primer cup.
  • Fig. 7 is a cross-sectional view of the disk for a primer cup of Fig. 6, taken along the lines B-B in Fig. 5.
  • Fig. 8 is a side elevational view of a disk for a primer cup of Fig. 6.
  • Fig. 9 is a perspective view of a disk for a primer cup of Fig. 6.
  • Fig. 10 is a side elevational view of a primer cup utilizing a tube of Fig. 2 and a disk of Fig. 5.
  • Fig. 11 is a cross-sectional view of the primer cup of Fig. 10, taken along the lines C-C in Fig. 9.
  • Fig. 12 is a top plan view of a primer cup of Fig. 10.
  • Fig. 13 is a perspective view of a primer cup of Fig. 10.
  • a primer cup is shown.
  • the illustrated example of a primer cup may be used with a firearm cartridge, or with another munition that utilizes a primer in any capacity.
  • the illustrated example of a primer cup is intended for use with an ignitable material that can be deposited on the disk as described below, for example, a thermite priming material, it is not limited to such use.
  • the terms top, bottom, front, back, side, etc. are used for convenience only, and are not intended to limit the scope of the invention. It is recognized that rotation of the components described herein would result in a different portion of each component being a top, side, etc.
  • the primer cup 10 (Figs. 1 and 10-13) includes a tube 12 (Figs. 2-5) and a disk 14 (Figs. 6-9).
  • the tube 12 and disk 14 are formed from a malleable metal, for example, brass, soft steel, or other malleable metals.
  • the illustrated example is made from brass.
  • the illustrated example of the tube 12 is generally cylindrical, and the illustrated example of the disk 14 is generally circular.
  • generally cylindrical is defined as sufficiently cylindrical to fit within a presently used primer pocket. Other shapes may be used to conform to other primer pockets without departing from the invention.
  • the tube 12 includes a side wall 15 having a first edge 16 and a second edge 18.
  • the first edge 16 is substantially straight, so that it may conform to the shape of a typical primer pocket.
  • the second edge 18 includes an inwardly projecting ledge 20 extending about the interior circumference of the side wall 15.
  • a first opening 22 is defined at the first edge 16 of the tube 12, and extends between the sidewalls 15.
  • a second opening 24 is disposed within the ledge 20.
  • the openings 22, 24 are generally centrally located with respect to the sidewall 15.
  • the side wall 15 further includes at least one inward projection 26 disposed a short distance inward from the ledge 20.
  • the illustrated example of a tube 14 includes four inward projections 26, which in the illustrated example are formed as a result of a crimp 28 corresponding to each of the inward projections 26.
  • the disk 14 includes a first face 30, a second face 32, and a peripheral edge 34.
  • the peripheral edge 34 includes a first portion 36 adjacent to the face 30, and a second portion 38 adjacent to the face 32.
  • the edge portion 36 has a larger diameter than the edge portion 38, resulting in a circumferential lip 39 being defined by the difference in diameter between the edge portion 36 and edge portion 38.
  • the edge portion 36 has an exterior diameter that corresponds to the internal diameter of the sidewall 15 of the tube 12.
  • the edge portion 38 has an exterior diameter that substantially corresponds to the internal diameter of the opening 24.
  • the thickness of the edge portion 36 corresponds to the distance between the ledge 20 and projections 26.
  • the thickness of the edge portion 38 corresponds to the thickness of the ledge 20. As used herein, the substantially corresponding dimensions are sufficiently close so that the disk 14 can be retained within the tube 12 as described below.
  • the first face 30 of the disk 14 also includes a recessed portion 40.
  • the recessed portion 40 has a diameter that is smaller than the diameter of the second edge portion 38, and is generally centrally located within the first face 36. In the illustrated example, the difference between the diameter of the recess 40 and the diameter of the second edge 38 does not substantially exceed twice the thickness of the disk 14.
  • the recessed portion 40 also has a depth that does not substantially exceed half of the thickness of the disk 14.
  • the recess 14 contains an ignitable material that has been deposited thereon, and one examples of the recess 14 is filled with thermite (Fig. 1 shows thermite 42 or other ignitable material 42 in the recess 40).
  • Fig. 1 shows thermite 42 or other ignitable material 42 in the recess 40.
  • An example of a suitable thermite may be prepared according to US patent application serial number 14/850,902, which was filed by Kevin R. Coffey et al. on September 10, 2015, and published as US 2016/0102030 on April 14, 2016, the entire disclosure of which is expressly incorporated herein by reference.
  • An example of a process for making the tube 12 begins with malleable metal tubing such as brass tubing having an external diameter corresponding to a typical external diameter for a standard primer.
  • the tube is cut to a length corresponding to or slightly longer than the length of a standard primer.
  • One end of the tube is bent to form the ledge 20.
  • the sidewall 15 of the tube 12 is then crimped to form the inward projections 26.
  • the disk 14 is made from a sheet of malleable metal, such as a brass sheet.
  • a press is utilized to form the disk 14 into the shape that is described above and illustrated in the drawings. Individual discs 14 can be cut from the sheet before or after the pressing process. The thermite may be deposited within the recess 40 either before or after the discs 14 are cut from the brass sheet, depending upon when the pressing process takes place.
  • a disk 14 is inserted into the opening 22 of a tube 12, and moved downward within the tube 12 until the second edge portion 38 is within the opening 24, and the first edge portion 36 abuts the ledge 20, and is retained by the inward projections 26.
  • an adhesive may be utilized to further secure each disk 14 within its tube 12. Suitable adhesives are known in the art of manufacturing ammunition for firearms. As one example, an anaerobic, UV curable adhesive is known to be drawn into the interface between a conventional primer and casing, and could also be utilized to adhere the disk within 14 to the tube 12.
  • the inward projections 26 may be formed either before or after the disk 14 is positioned inside the tube 12.
  • the present invention therefore provides a primer that includes an ignitable material deposited thereon.
  • the ignitable material can in some examples be a layered thermite material.
  • the primer can be easily and safely manufactured by depositing the ignitable material on a disk, and then inserting the disk into a tube to form the primer cup.
  • the primer can be dimensioned and configured to fit within a primer pocket of a standard firearm cartridge or the primer pocket of another munition that utilizes standard primers.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Cookers (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

La présente invention concerne une coupelle pour une amorce qui facilite l'utilisation d'un matériau inflammable déposé, par exemple un matériau de type thermite en couches, dans une coupelle qui s'adapte dans une poche d'amorce standard dans un boîtier de cartouche d'arme à feu ou un autre emplacement conçu pour une amorce actuellement disponible. La coupelle d'amorce comprend un tube et un disque. Le matériau inflammable peut être déposé sur une surface du disque. Le disque peut ensuite être introduit dans le tube et il est retenu à l'intérieur du tube par un rebord dépassant vers l'intérieur à une extrémité du tube.
PCT/US2018/058267 2017-10-30 2018-10-30 Coupelle d'amorce pour une amorce pourvue d'un matériau inflammable déposé Ceased WO2019089635A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201762579141P 2017-10-30 2017-10-30
US62/579,141 2017-10-30

Publications (1)

Publication Number Publication Date
WO2019089635A1 true WO2019089635A1 (fr) 2019-05-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2018/058267 Ceased WO2019089635A1 (fr) 2017-10-30 2018-10-30 Coupelle d'amorce pour une amorce pourvue d'un matériau inflammable déposé

Country Status (2)

Country Link
US (1) US20190128656A1 (fr)
WO (1) WO2019089635A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10989510B2 (en) * 2019-05-13 2021-04-27 Spectre Enterprises, Inc. Primer housing for firearms and other munitions
WO2024155628A1 (fr) * 2023-01-16 2024-07-25 University Of Central Florida Research Foundation, Inc. Pistolet goujonneur ou pistolet de fixation alimenté par des amorces de thermite
EP4705715A2 (fr) 2023-04-29 2026-03-11 Spectre Primer Technologies, Inc. Couche d'interface floue pour thermite et amorce fabriquée à partir de thermite avec couche floue

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US5113764A (en) * 1989-09-25 1992-05-19 Olin Corporation Semiconductor bridge (SCB) packaging system
US5969288A (en) * 1997-05-07 1999-10-19 Cheddite France Cartridge case, especially for a smooth bore gun
US8298358B1 (en) * 2008-03-07 2012-10-30 University Of Central Florida Research Foundation, Inc. Ignitable heterogeneous structures and methods for forming
US20160102030A1 (en) * 2014-09-10 2016-04-14 University Of Central Florida Research Foundation Inc. Primer for Firearms and Other Munitions
US20160161237A1 (en) * 2013-08-05 2016-06-09 Ruag Ammotec Gmbh Electronic Primer Cap for Small-Caliber Ammunition
US9618307B1 (en) * 2013-03-28 2017-04-11 The United States Of America As Represented By The Secretary Of The Army Disposable, miniature internal optical ignition source for ammunition application

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US4014264A (en) * 1974-09-13 1977-03-29 Dynamit Nobel Aktiengesellschaft Combined igniter cap
US5113764A (en) * 1989-09-25 1992-05-19 Olin Corporation Semiconductor bridge (SCB) packaging system
US5969288A (en) * 1997-05-07 1999-10-19 Cheddite France Cartridge case, especially for a smooth bore gun
US8298358B1 (en) * 2008-03-07 2012-10-30 University Of Central Florida Research Foundation, Inc. Ignitable heterogeneous structures and methods for forming
US9618307B1 (en) * 2013-03-28 2017-04-11 The United States Of America As Represented By The Secretary Of The Army Disposable, miniature internal optical ignition source for ammunition application
US20160161237A1 (en) * 2013-08-05 2016-06-09 Ruag Ammotec Gmbh Electronic Primer Cap for Small-Caliber Ammunition
US20160102030A1 (en) * 2014-09-10 2016-04-14 University Of Central Florida Research Foundation Inc. Primer for Firearms and Other Munitions

Also Published As

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