EP3059544A1 - Hand grenades - Google Patents

Hand grenades Download PDF

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Publication number
EP3059544A1
EP3059544A1 EP16155847.3A EP16155847A EP3059544A1 EP 3059544 A1 EP3059544 A1 EP 3059544A1 EP 16155847 A EP16155847 A EP 16155847A EP 3059544 A1 EP3059544 A1 EP 3059544A1
Authority
EP
European Patent Office
Prior art keywords
firing pin
receiver
pin
main body
hand grenade
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.)
Granted
Application number
EP16155847.3A
Other languages
German (de)
French (fr)
Other versions
EP3059544B1 (en
Inventor
John William George Ellis
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
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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 EP16155847.3A priority Critical patent/EP3059544B1/en
Publication of EP3059544A1 publication Critical patent/EP3059544A1/en
Application granted granted Critical
Publication of EP3059544B1 publication Critical patent/EP3059544B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B8/00—Practice or training ammunition
    • F42B8/12—Projectiles or missiles
    • F42B8/26—Hand grenades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B27/00—Hand grenades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C14/00—Mechanical fuzes characterised by the ammunition class or type
    • F42C14/02—Mechanical fuzes characterised by the ammunition class or type for hand grenades

Definitions

  • This invention relates to hand grenades and is concerned with the provision of a novel form of blank-firing hand grenade.
  • the invention is concerned with the provision of a blank-firing hand grenade which is reusable and can be used for training purposes in the carrying out of "Airsoft” or "Paintball” games.
  • Hand grenades with a pyrotechnic delay are usually expensive to use and inappropriate in that the delay gives the opposing players time to kick the grenade away before detonation occurs.
  • a hand grenade that includes a main body, a receiver holding a cartridge chamber, a firing pin that acts in the manner of a pendulum and a ball located between facing conical surfaces on the firing pin and on a wall of the main body.
  • the diameter of the lower portion of the firing pin is preferably substantially greater than the diameters of the upper and central parts of the firing pin.
  • the firing pin thus has a relatively low centre of gravity.
  • One end of the firing pin is preferably positioned in a hole in the receiver with a spring acting between the receiver and the firing pin.
  • the arrangement is such that a safety ring-pin can be inserted in the hole in the receiver to prevent inadvertent movement of the receiver relative to the main body, the safety ring-pin being removed before throwing of the grenade.
  • the arrangement is preferably such that the receiver is free to move vertically within limits and to rotate when the safety ring-pin is removed.
  • the hand grenade shown in the drawings includes a generally cylindrical main body 10 made from, for example, a relatively light-weight polymeric material.
  • the inner surface 8 of the base of the main body 10 is of conical form and a ball 7 rests on the conical surface 8, being trapped between the conical surface 8 and the inverted conical surface 9 of the base of a pendulum type firing pin 6 contained within the cylindrical interior of the main body 10.
  • the diameter of the lower part of the firing pin 6 is substantially greater than the diameters of the upper and central parts of the firing pin 6, which thus has a relatively low centre of gravity.
  • a receiver 3 made from, for example, aluminium is positioned within the open end of the main body 10 and has an outwardly facing annular channel within which is located a wire ring 11 secured to the inner surface of the main body 10. Movement of the receiver 3 is prevented when a safety ring-pin 13 is in place.
  • the safety ring-pin 13 is fitted in a hole in the wall of the main body 10.
  • the receiver 3 is formed with a cylindrical recess in which a cartridge chamber 2 is located and the cartridge chamber 2 has a flash ejection hole 1.
  • the safety ring-pin 13 (when inserted in the hole) rests on a shoulder of the firing pin 3 and serves to prevent the firing pin 6 from reaching the cartridge 14 within the chamber 2. It also prevents the receiver 3 from moving downwards and from revolving when the cartridge chamber 2 is being screwed into position or unscrewed.
  • the firing pin 6 is supported on the ball 7, which is positioned between two facing conical surfaces 8 and 9, and as the diameter of the lower portion of the firing pin 6 is substantially greater than the upper portion of the firing pin 6, the firing pin 6 will operate in a manner corresponding to a pendulum.
  • the ring pin 13 is removed from the hole.
  • the receiver 3 will move downwardly under the action of gravity so that the blank cartridge 14 in the cartridge chamber 2 will be thrust against the top of the firing pin 6 and the cartridge 14 will be fired.
  • the pendulumaction firing pin 6 will move towards the side of the body 10 that has engaged the ground but, because the firing pin 6 is engaged with the ball 7, the effect of the ball 7 rolling in engagement with the two conical surfaces 8 and 9 will result in the firing pin 6 moving towards the blank cartridge 14 and firing it.
  • the cartridge will be fired.
  • the grenade can thus be used for training purposes or in "Airsoft” or “Paintball” games.

Abstract

A hand grenade includes a main body (10), a receiver (3) holding a cartridge chamber (2), a firing pin (6) that acts in the manner of a pendulum and a ball (7) located between facing conical surfaces on the firing pin (6) and on a wall (8) of the main body.

Description

    Field of the Invention
  • This invention relates to hand grenades and is concerned with the provision of a novel form of blank-firing hand grenade.
  • More specifically, the invention is concerned with the provision of a blank-firing hand grenade which is reusable and can be used for training purposes in the carrying out of "Airsoft" or "Paintball" games.
  • Normal hand grenades with safety levers are unsuitable for these games as the levers can easily be lost. In addition, many hand grenades are too heavy and dangerous to use against civilian players.
  • Hand grenades with a pyrotechnic delay are usually expensive to use and inappropriate in that the delay gives the opposing players time to kick the grenade away before detonation occurs.
    • Summary of the Invention
  • According to the present invention there is provided a hand grenade that includes a main body, a receiver holding a cartridge chamber, a firing pin that acts in the manner of a pendulum and a ball located between facing conical surfaces on the firing pin and on a wall of the main body.
  • The diameter of the lower portion of the firing pin is preferably substantially greater than the diameters of the upper and central parts of the firing pin. The firing pin thus has a relatively low centre of gravity.
  • One end of the firing pin is preferably positioned in a hole in the receiver with a spring acting between the receiver and the firing pin.
  • The arrangement is such that a safety ring-pin can be inserted in the hole in the receiver to prevent inadvertent movement of the receiver relative to the main body, the safety ring-pin being removed before throwing of the grenade.
  • The arrangement is preferably such that the receiver is free to move vertically within limits and to rotate when the safety ring-pin is removed.
    • Brief Description of the Drawings
    • Figure 1 is a sectional view of a hand grenade, and
    • Figure 2 is another sectional view of the hand grenade, taken at right angles to Figure 1.
    Description of the Preferred Embodiment
  • The hand grenade shown in the drawings includes a generally cylindrical main body 10 made from, for example, a relatively light-weight polymeric material. The inner surface 8 of the base of the main body 10 is of conical form and a ball 7 rests on the conical surface 8, being trapped between the conical surface 8 and the inverted conical surface 9 of the base of a pendulum type firing pin 6 contained within the cylindrical interior of the main body 10. As can be seen from Figure 1, the diameter of the lower part of the firing pin 6 is substantially greater than the diameters of the upper and central parts of the firing pin 6, which thus has a relatively low centre of gravity.
  • A receiver 3 made from, for example, aluminium is positioned within the open end of the main body 10 and has an outwardly facing annular channel within which is located a wire ring 11 secured to the inner surface of the main body 10. Movement of the receiver 3 is prevented when a safety ring-pin 13 is in place. The safety ring-pin 13 is fitted in a hole in the wall of the main body 10. The receiver 3 is formed with a cylindrical recess in which a cartridge chamber 2 is located and the cartridge chamber 2 has a flash ejection hole 1. The safety ring-pin 13 (when inserted in the hole) rests on a shoulder of the firing pin 3 and serves to prevent the firing pin 6 from reaching the cartridge 14 within the chamber 2. It also prevents the receiver 3 from moving downwards and from revolving when the cartridge chamber 2 is being screwed into position or unscrewed.
  • A spring 5, of generally conical configuration as shown in the drawing, acts between the underside of the receiver 3 and a shoulder of the firing pin 6 to hold the firing pin 6 down and the receiver 3 up, thus urging the firing pin 6 away from the primer of the blank cartridge 14 positioned within the chamber 2. As the firing pin 6 is supported on the ball 7, which is positioned between two facing conical surfaces 8 and 9, and as the diameter of the lower portion of the firing pin 6 is substantially greater than the upper portion of the firing pin 6, the firing pin 6 will operate in a manner corresponding to a pendulum.
  • Before the grenade is thrown, the ring pin 13 is removed from the hole.
  • If the throwing of the grenade results in its base striking a hard surface, the receiver 3 will move downwardly under the action of gravity so that the blank cartridge 14 in the cartridge chamber 2 will be thrust against the top of the firing pin 6 and the cartridge 14 will be fired.
  • If the grenade lands the other way up, the receiver 3 will move inwardly against the action of the spring 5 and the cartridge 14 will again be fired.
  • If, however, the grenade lands on its side, the pendulumaction firing pin 6 will move towards the side of the body 10 that has engaged the ground but, because the firing pin 6 is engaged with the ball 7, the effect of the ball 7 rolling in engagement with the two conical surfaces 8 and 9 will result in the firing pin 6 moving towards the blank cartridge 14 and firing it.
  • Thus, whatever the orientation of the grenade when it strikes the ground, the cartridge will be fired. The grenade can thus be used for training purposes or in "Airsoft" or "Paintball" games.

Claims (5)

  1. A hand grenade that includes a main body, a receiver holding a cartridge chamber, a firing pin that acts in the manner of a pendulum and a ball located between facing conical surfaces on the firing pin and on a wall of the main body.
  2. A hand grenade as claimed in Claim 1, in which the diameter of the lower portion of the firing pin is substantially greater than the diameters of the upper and central parts of the firing pin.
  3. A hand grenade as claimed in Claim 1, in which one end of the firing pin is positioned in a hole in the receiver with a spring acting between the receiver and the firing pin.
  4. A hand grenade as claimed in Claim 1, in which a safety ring-pin is inserted in a hole in the receiver to prevent inadvertent movement of the receiver relative to the main body.
  5. A hand grenade as claimed in Claim 4, in which the receiver is free to move vertically and to rotate when the safety ring-pin is removed.
EP16155847.3A 2016-02-16 2016-02-16 Hand grenades Active EP3059544B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP16155847.3A EP3059544B1 (en) 2016-02-16 2016-02-16 Hand grenades

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16155847.3A EP3059544B1 (en) 2016-02-16 2016-02-16 Hand grenades

Publications (2)

Publication Number Publication Date
EP3059544A1 true EP3059544A1 (en) 2016-08-24
EP3059544B1 EP3059544B1 (en) 2018-02-14

Family

ID=60937471

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16155847.3A Active EP3059544B1 (en) 2016-02-16 2016-02-16 Hand grenades

Country Status (1)

Country Link
EP (1) EP3059544B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11054234B2 (en) 2015-06-16 2021-07-06 Als, Inc. Firing mechanism for a grenade, a grenade and a method of operating a grenade
GB2603980A (en) * 2020-08-12 2022-08-24 Sleep Env Innovations Llc Blank firing device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB121272A (en) * 1917-07-27 1919-09-29 Fridtjof Nielsen Brondby Improvements in and relating to Hand Grenades, Projectiles and Mines.
FR1201428A (en) * 1957-07-25 1959-12-30 Alsetex Deceleration firing system for explosive devices
EP1705454A1 (en) * 2005-03-23 2006-09-27 John William George Ellis A training grenade

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB121272A (en) * 1917-07-27 1919-09-29 Fridtjof Nielsen Brondby Improvements in and relating to Hand Grenades, Projectiles and Mines.
FR1201428A (en) * 1957-07-25 1959-12-30 Alsetex Deceleration firing system for explosive devices
EP1705454A1 (en) * 2005-03-23 2006-09-27 John William George Ellis A training grenade

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11054234B2 (en) 2015-06-16 2021-07-06 Als, Inc. Firing mechanism for a grenade, a grenade and a method of operating a grenade
GB2603980A (en) * 2020-08-12 2022-08-24 Sleep Env Innovations Llc Blank firing device
US11549793B2 (en) 2020-08-12 2023-01-10 Sleep Environment Innovations LLC Blank firing device

Also Published As

Publication number Publication date
EP3059544B1 (en) 2018-02-14

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