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WO2016016694A1 - Amorce hybride - Google Patents

Amorce hybride Download PDF

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Publication number
WO2016016694A1
WO2016016694A1 PCT/IB2014/066291 IB2014066291W WO2016016694A1 WO 2016016694 A1 WO2016016694 A1 WO 2016016694A1 IB 2014066291 W IB2014066291 W IB 2014066291W WO 2016016694 A1 WO2016016694 A1 WO 2016016694A1
Authority
WO
WIPO (PCT)
Prior art keywords
primer
electrode
pins
per
electric
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/IB2014/066291
Other languages
English (en)
Inventor
Shyam Swaminadhan RAMI
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to SG11201700029RA priority Critical patent/SG11201700029RA/en
Publication of WO2016016694A1 publication Critical patent/WO2016016694A1/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
    • F42C19/0807—Primers; Detonators characterised by the particular configuration of the transmission channels from the priming energy source to the charge to be ignited, e.g. multiple channels, nozzles, diaphragms or filters
    • 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
    • F42C19/14—Primers; Detonators electric operable also in the percussion mode

Definitions

  • the present invention generally relates to a weapon technology and particularly relates to an improvement in a primer used in the gun device.
  • the present invention more particularly relates to a hybrid primer for facilitating an instantaneous ignition of a propellant.
  • a conventional primer in use today is a small container or wafer of impact sensitive explosive material that is used to ignite the main explosive charge of a firearm or an explosive.
  • a primer is an essential part of a cartridge or an artillery shell that initiates the combustion of the propellant which in turn helps provide enough kinetic energy to the projectile by building up necessary pressure.
  • the traditional primers rely completely on a mechanical strike by a hammer or firing pin on the percussion cap fixed at the rear end of a cartridge or artillery shell to initiate the combustion of the propellant.
  • This method of triggering the propellant has disadvantages of slow and incomplete combustion of the propellant.
  • the mechanical process of triggering the primer is slow as they have only single triggering point and also due to delay introduced by the movement of hammer and the firing pin.
  • the combustion of the main charge or propellant starts only at rear end; this results in slower rate of combustion since the combustion can be triggered only at one end and has to then progress to the other; thus the resulting pressure build up is also slower.
  • the percussion-electric primer includes the elements of a primer cup, in which an electrically-conducting contact button is disposed at one end thereof, and a booster charge supporting cup is disposed within the other end of the primer cup. A space between the contact button and supporting cup is adapted to receive a supply of priming composition.
  • a weapon for utilizing a combination percussive and electrically responsive cartridge primer includes an electromechanical firing mechanism that operates to fire rounds percussively and electrically, and an electrical controller for regulating the firing of rounds electrically.
  • a method of firing a combination percussive and electrically responsive cartridge primer includes mechanically firing a first round having the primer, and electrically firing subsequent rounds having the primer.
  • the energy generating mechanism may include a thermoelectric generator.
  • the ignition method disclosed in the prior arts is conventional in nature and follows a chain reaction. The conventional designs have just one triggering point. The ignition starts only at one end of the cartridge (near percussion cap) and then progresses to the neck (or projectile end) of the cartridge. A significant amount of unburnt propellant is pushed into the barrel along with the bullet. This results in muzzle flash and residue is left after the bullet leaves the gun barrel. The muzzle flash produced by the residual propellants also exposes the soldiers using the firearm.
  • the chain combustion of the propellant in the prior arts results in inefficiency as the propellant power is not fully utilized to translate into greater kinetic energy, hence limiting range of a projectile. Also rate of combustion is much slower in the prior art primer technology leading to low rate of fire.
  • a primer device that allows instantaneous combustion and hence improves the rate of combustion of propellant by using multiple trigger points.
  • a primer that can help achieve complete combustion of the propellant within the firearm which can eliminate the muzzle flash.
  • a primer device to increase a range and accuracy in hitting a target by increasing the kinetic energy of the projectile.
  • a primer device to reduce or eliminate the residue propellant left in firearm.
  • a primer device to increase a firing rate with respect to the conventional used firearms.
  • the primary object of the embodiments herein is to provide a hybrid primer that improves the rate of combustion of the propellants by improving the primer design.
  • Another object of the embodiments herein is to provide multi-point simultaneous triggering of combustion in the cartridge.
  • Yet another object of the embodiments herein is to provide a primer technology with complete combustion before a bullet or projectile exits the barrel.
  • Yet another object of the embodiments herein is to provide a primer technology which enables the creation of high pressure with the complete combustion of the propellant in less time which will allow the projectile to leave with greater kinetic energy translating into greater range and accuracy.
  • the various embodiments herein disclose a hybrid primer device comprising an electric primer and a chemical primer housed in a percussion cap.
  • the percussion cap is housed in a base.
  • the electrical primer comprises of a single or plurality of electrode pairs or electrode pins.
  • Each electrode pair comprises of at least one anode and one cathode pin.
  • the anode and the cathode in each pair are insulated from each other.
  • the plurality of anode and cathode are arranged at a predetermined distance from a central axis. The length of each pair of anode and cathode varies to create multiple trigger points across the length of the cartridge.
  • each pair of electrodes of variable lengths simultaneously creates an electric arc or a spark on application of high voltage electric pulses across them.
  • the spark leads to ignition of the propellant at multiple points instantaneously to improves the rate of combustion and reduce the triggering time.
  • the high voltage electric pulses are applied across the electrode pins to generate continuous electric arc or spark until the propellant is emptied from a cartridge case or a firing chamber to achieve complete combustion.
  • the chemical primer housed in a press fitted percussion cap provides ignition of the propellant in absence of the electric primer through a mechanical impact created by a firing pin or a hammer.
  • the base of the primer is composed of a non-conducting material.
  • the electrode pins and the percussion cap are fitted in the base made of non-conducting material.
  • the electrode pins are effectively insulated from each other and also from the cartridge case and the firearm.
  • variable length of the electrodes is distributed to provide instantaneous combustion at multiple points.
  • the length of the electrode pin varies covering an area closer to the percussion cap upto the area closer to neck or mouth of the cartridge.
  • the plurality of electrode pairs are fixed at a distance from the central axis in a predetermined manner.
  • the predetermined manner comprises adjustment of a gap between the tips of the longer electrode pair less than a length of the shorter electrode pair.
  • the predetermined manner allows an equal current to pass through the longer and the shorter electrode pair on application of high voltage electric pulses.
  • a gap between the tips of the longer electrode pins is adjusted by changing an angle of inclination of the longer electrode pins with respect to the base.
  • the embodiments herein disclose a hybrid primer device comprising an electric primer and a chemical primer housed in a percussion cap.
  • the percussion cap is housed in a base.
  • the electrical primer comprises of electrodes.
  • Each electrode further comprises two or more interconnected pins of variable length.
  • the two or more interconnected pins have a single contact point for applying high voltage power supply.
  • the length of the pins differs to help create multiple trigger points across the length of the cartridge.
  • the electric primer consists of a single pin acting as electrode and the cartridge case having the inner walls made of a conducting material acts as a complementing electrode.
  • the electric primer consists of a single pin acting as electrode have multiple spikes or thorn like structure.
  • the electric primer consists of multiple electrode pins. A distance between the tips of the longer electrode pins are adjusted by changing an angle of inclination with respect the base of the hybrid primer device.
  • the electric primer consists of multiple electrode pins.
  • the electrode pins are fixed at a predetermined distance from the centre in a manner that a distance between the tips of the longer electrode pins are adjusted to be less than the length of the shorter electrode pins. A current passing through the longer and shorter electrode pins is nearly equal on application of high voltage electric pulses.
  • a distance between the cartridge case and pins is less between the longer electrode pin and the cartridge case as compared to the shorter electrode pins to allow passage of current through the multiple electrode pins to create electric arcs.
  • An embodiment herein discloses a power supply contact comprising a plurality of complementing power supply terminals, a non-conducting base and a hole at the centre is provided for the passage of the firing pin.
  • the plurality of complementing power supply terminals are fixed on the non-conducting base with the terminals separated by a distance greater than the diameter of an electrode pin contact head to prevent short circuit at the contacts.
  • the instantaneous high pressure multiplicatively increases a bullet velocity.
  • the increased bullet velocity increases a target range and accuracy.
  • the voltage applied to the pin of the electric primer ranges from few kilovolt to hundreds of thousand kilovolt.
  • the base further comprises a plurality of flash hole channels and an anvil.
  • FIG. 1 illustrates a diagram of a side view of the hybrid primer, according to an embodiment herein.
  • FIG. 2 illustrates a diagram of a bottom view of the hybrid primer, according to an embodiment herein.
  • FIG. 3 illustrates a diagram of an application of the hybrid primer device in a centre-fired ammunition cartridge, according to an embodiment herein.
  • FIG. 4 illustrates a diagram of top view of the hybrid primer, according to one embodiment herein.
  • FIG. 5A illustrates a diagram of an alternate arrangement of the electrode pins in the hybrid primer device, according to an embodiment herein.
  • FIG. 5B and 5C illustrates a side view and a bottom view of an alternate arrangement of the electrode pins in the hybrid primer device, according to an embodiment herein.
  • FIG. 6 illustrates an exemplary diagram for a power supply to the hybrid primer device, according to one embodiment herein.
  • FIG. 7 illustrates a diagram for an alternative arrangement of the hybrid primer, according to an embodiment herein.
  • FIG. 8 illustrates an exploded view of the hybrid primer with single pin configuration, according to an embodiment herein.
  • FIG. 1 illustrates a diagram of a side view of the hybrid primer, according to an embodiment herein.
  • a hybrid primer device 100 comprising an electric primer and a chemical primer housed in a percussion cap 102.
  • the electrical primer comprises a plurality of electrode pair or conductive pins 103.
  • Each electrode pair 103 comprises one anode and one cathode pin.
  • the anode and the cathode in each pair are insulated from each other.
  • the plurality of anode and cathode 103 are arranged at a predetermined distance from a central axis.
  • the length of each pair of anode and cathode pin increases with increase in its distance from the base.
  • the chemical primer provides ignition of propellant in absence of the electric primer through a mechanical impact.
  • the conductive pins 103 are place in an insulated base 101.
  • FIG. 2 illustrates a diagram of a bottom view of the hybrid primer, according to an embodiment herein.
  • the conductive pins 103 are arranged at a predetermined distance from the percussion cap 102 which is at the central axis.
  • the distance of the conductive pins 103 varies on the basis of a required voltage application so that current passes through them.
  • the length of the conductive pins 103 and its distance for the central axis is arranged manipulatively to achieve an instantaneous combustion of the propellant encapsulated in the cartridge case 104 at multiple points.
  • the conductive pins 103 are place in an insulated base 101 to avoid short-circuit.
  • the non-conducting base of primer not only insulates the electrodes from each other but also provides insulation to the cartridge case 104 and the ignition chamber during a power supply to the head of the conductive pins 103 of the primer.
  • FIG. 3 illustrates a diagram of an application of the hybrid primer device in a centre-fired ammunition cartridge, according to an embodiment herein.
  • the hybrid primer is provided in the cartridge case 104 that also holds a projectile 105 of the centre fired ammunition cartridge through a neck 108.
  • An application of a predetermined amount of voltage creates sparks or plasma channel 106 in a zone between the conductive pins 103 near the neck, in the middle and near the base.
  • the sparks in the various zones 106 results in an instantaneous combustion of the propellant 107.
  • the voltage is provided through contact head of the conductive pins 103 that are placed on the base 101 at the predetermined positions from the percussion cap 102.
  • FIG. 4 illustrates a diagram of top view of the hybrid primer, according to one embodiment herein.
  • the hybrid primer comprises the percussion cap 102 fitted in the centre of the base 101 containing the chemical primer.
  • the percussion cap 102 is surrounded by the electrode pins arranged in a manner such that the longer electrode pin pair 402 is arranged closer that the shorter electrode pin pair 401.
  • This arrangement allows a current to pass simultaneously through both of them creating an electric arc equally at tip ends of both the longer and shorter electrode pins (402 and 401 respectively). The current tries to take the shortest path available between the anode and cathode.
  • the insulation barrier which acts as resistance between the anode and cathode is adjusted by manipulating a distance between the anode and cathode.
  • the insulation barrier is equal between the longer and shorter electrode pairs (402 and 401 respectively)
  • the current passes equally between the electrode pairs generating the electric arc or spark instantaneously on application of very high voltage electric power pulse at the contacts.
  • the distance (dl) between the shorter electrode pair 401 is greater than the distance (d2) between the longer electrode pair 402.
  • the diameter of the electrode pin head that contacts the power supply is represented as d3.
  • the flash holes of the percussion cap are shown as 403.
  • the flash-holes and anvil may be part of the base of the hybrid primer wherein a percussion-cup containing impact sensitive chemical- primer may be press fitted through the provisioned slot in the base.
  • the distance between the long pin and the cartridge case (d2) will be less than the distance between the short pin and the cartridge case (dl).
  • FIG. 5A illustrates a diagram of an alternate arrangement of the electrode pins in the hybrid primer device, according to an embodiment herein. With respect to FIG.
  • FIG. 5B and 5C illustrates a side view and a bottom view of an alternate arrangement of the electrode pins in the hybrid primer device, according to an embodiment herein.
  • the arrangement shown in FIG. 5 A is modified to reduce the distance between the tips of the longer and shorter electrode pins (402 and 401 respectively).
  • the longer and shorter electrode pins (402 and 401 respectively) are arranged at angle with respect to base in such that each pins from an electrode pair lean towards each other.
  • the electrode pins are arranged at eight equidistant points 501 on the base.
  • the eight electrode pins are arranged at equal distance from each other at an angle of 45° with respect to the centre.
  • the distance d4 is arranged such that the electrode pair (with pins 1 and 5) is not supplied with power while the other three pairs are supplied with power.
  • the electric arcs will be broken intermittently due to movement of the gases and propellant and the electric arc will be produced between any of the complementing electrode pins where the insulation barrier is the least for a given instant.
  • intermittent arcs may be produced between pins 7 and 2 or 7 and 4.
  • FIG. 6 illustrates an exemplary diagram for a power supply to the hybrid primer device, according to one embodiment herein.
  • the anode 601 and the cathode 602 are attached to a non-conducting unit of a bolt 604 with a hole 603 in the middle for a firing pin.
  • the anode 601 and cathode 602 is greater than the diameter of the electrode pin head to prevent a short circuit while contacting an electrode pin head at the base.
  • the distance of the anode 601 or the cathode 602 periphery from the centre is less than the radius of the base to avoid contact with the cartridge case.
  • FIG. 7 illustrates a diagram for an alternative arrangement of the hybrid primer, according to an embodiment herein.
  • the hybrid primer comprises a single pin or electrode 701 with a plurality of optional spikes 702.
  • the cartridge case 104 is made of a conductive material acting as a complementing electrode for the single pin 701.
  • the complementing power supply terminals are shown as 703 and 704.
  • FIG. 8 illustrates an exploded view of the hybrid primer with single pin configuration, according to an embodiment herein.
  • the hybrid primer with single electrode pin 701 has a cylindrical bottom press fitted with the percussion cap.
  • the cylindrical base is provided with flash holes 801.
  • the primer assembly is fitted on the non-conducting base 802.
  • the present hybrid primer has ability to generate same power instantaneously by using least propellant in a cartridge case. For e.g. if a 100 grain of a propellant generates a prefixed amount of power through the conventionally used primer, then same power is generated by burning or ignition of 75 grain or lesser amount of propellant when the present hybrid primer is used.
  • the primer pins can act as anode and the cartridge case can act as cathode (or vice-versa).
  • the spark or plasma channel is created through the application of high-voltage electric power.
  • the primer pins may form a homogenous structure in this case along with the base with sufficient insulation between the base and the casing to prevent short circuit and provide necessary insulation between the electrodes.
  • the hybrid primer is also be used in a caseless ammunition.
  • the chamber or the projectile itself acts as an electrode and the primer forms a part of a bolt.
  • the continuous application of plasma channel results in higher rate of combustion which in turn results in rapid buildup of pressure inside the cartridge case or the chamber and hence helps the projectile to move with greater kinetic energy.
  • the hybrid primer is used without the chemical primer and hence acts as a pure electrical primer.
  • the electrical primer consists of a single pin, with or without multiple thorns or spikes on it.
  • the pin acts as an electrode and the cartridge case or the encasing chamber acting as the complementing electrode.
  • a cartridge with the hybrid primer there are multiple triggering points inside the cartridge that helps burn more propellant quickly all along the length of cartridge case resulting in much higher rate of combustion.
  • the triggering time is lower hence the firing rate in the firearms using the hybrid primer will be higher.
  • the muzzle flash is considerably reduced or completely eliminated as the continuous application of high voltage electric arcs or sparks completely burn the propellants even as they enter the barrel. Since the propellant completes burning before it exits the barrel it helps improve the stealth signature of soldiers and also significantly reduces the wastage of propellants.
  • the ammunitions made out of the hybrid primer can be universally used in mechanical firearms too.
  • the hybrid primer design does not necessitate change in the dimensions of existing ammunitions.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Abstract

L'invention concerne un dispositif d'amorce hybride comprenant une amorce électrique et une amorce chimique logées dans une capsule. L'amorce électrique comprend une broche unique ou une pluralité de paires de broches d'électrode. Chaque paire d'électrodes comprend au moins une broche d'anode et une broche de cathode qui sont isolées et agencées à une distance prédéterminée d'un axe central. La longueur de chaque paire de broches d'anode et de cathode varie pour aider à créer de multiples points de déclenchement à travers la longueur de la cartouche. L'amorce chimique fournit l'allumage d'agent propulsif en l'absence de puissance électrique. L'application d'une impulsion électrique à haute tension à travers les électrodes génère des arcs électriques entre les paires à de multiples points à l'intérieur de la cartouche, provoquant une combustion instantanée de l'agent propulsif créant une haute pression dans le boîtier de cartouche qui améliore l'efficacité du projectile. Les arcs électriques générés vont se poursuivre même une fois que l'amorce chimique est épuisée, permettant ainsi à l'amorce de brûler de façon continue l'agent propulsif assurant la combustion complète.
PCT/IB2014/066291 2014-07-26 2014-11-24 Amorce hybride Ceased WO2016016694A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SG11201700029RA SG11201700029RA (en) 2014-07-26 2014-11-24 Hybrid primer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201462029426P 2014-07-26 2014-07-26
US62/029,426 2014-07-26

Publications (1)

Publication Number Publication Date
WO2016016694A1 true WO2016016694A1 (fr) 2016-02-04

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ID=55216816

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2014/066291 Ceased WO2016016694A1 (fr) 2014-07-26 2014-11-24 Amorce hybride

Country Status (2)

Country Link
SG (1) SG11201700029RA (fr)
WO (1) WO2016016694A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109464127A (zh) * 2019-01-05 2019-03-15 余正阳 一种神经内科检查装置
CN115342695A (zh) * 2021-08-06 2022-11-15 米建军 一种子弹击发方法及子弹

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3768413A (en) * 1972-03-10 1973-10-30 Olin Corp Electric and impact primer
US3779167A (en) * 1970-01-21 1973-12-18 Olin Corp Electrical initiator
US5226667A (en) * 1991-03-19 1993-07-13 Trw Vehicle Safety Systems Inc. Percussion igniter assembly
WO1993016350A1 (fr) * 1992-02-06 1993-08-19 Alliant Techsystems Inc. Dispositif d'interconnexion d'amorce-charge propulsive pour la mise a feu d'une munition a element unique ou elements multiples
US6691621B2 (en) * 2001-07-06 2004-02-17 Giat Industries Ignition device for a propellant charge

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3779167A (en) * 1970-01-21 1973-12-18 Olin Corp Electrical initiator
US3768413A (en) * 1972-03-10 1973-10-30 Olin Corp Electric and impact primer
US5226667A (en) * 1991-03-19 1993-07-13 Trw Vehicle Safety Systems Inc. Percussion igniter assembly
WO1993016350A1 (fr) * 1992-02-06 1993-08-19 Alliant Techsystems Inc. Dispositif d'interconnexion d'amorce-charge propulsive pour la mise a feu d'une munition a element unique ou elements multiples
US6691621B2 (en) * 2001-07-06 2004-02-17 Giat Industries Ignition device for a propellant charge

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109464127A (zh) * 2019-01-05 2019-03-15 余正阳 一种神经内科检查装置
CN115342695A (zh) * 2021-08-06 2022-11-15 米建军 一种子弹击发方法及子弹

Also Published As

Publication number Publication date
SG11201700029RA (en) 2017-02-27

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