US20160238357A1 - Hand grenades - Google Patents
Hand grenades Download PDFInfo
- Publication number
- US20160238357A1 US20160238357A1 US15/044,421 US201615044421A US2016238357A1 US 20160238357 A1 US20160238357 A1 US 20160238357A1 US 201615044421 A US201615044421 A US 201615044421A US 2016238357 A1 US2016238357 A1 US 2016238357A1
- Authority
- US
- United States
- 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.)
- Abandoned
Links
Images
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.
- FIG. 1 is a sectional view of a hand grenade
- FIG. 2 is another sectional view of the hand grenade, taken at right angles to FIG. 1 .
- 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.
- a spring 5 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 .
- 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 pendulum-action 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.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Toys (AREA)
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
- This application claims priority under 35 USC §119 to British Patent Application No. 1502600.8 filed Feb. 17, 2015, which application is hereby incorporated by reference in its entirety.
- 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.
- 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.
-
FIG. 1 is a sectional view of a hand grenade, and -
FIG. 2 is another sectional view of the hand grenade, taken at right angles toFIG. 1 . - The hand grenade shown in the drawings includes a generally cylindrical
main body 10 made from, for example, a relatively light-weight polymeric material. Theinner surface 8 of the base of themain body 10 is of conical form and aball 7 rests on theconical surface 8, being trapped between theconical surface 8 and the invertedconical surface 9 of the base of a pendulum type firing pin 6 contained within the cylindrical interior of themain body 10. As can be seen fromFIG. 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 themain body 10 and has an outwardly facing annular channel within which is located a wire ring 11 secured to the inner surface of themain body 10. Movement of thereceiver 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 themain body 10. Thereceiver 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 thefiring pin 3 and serves to prevent the firing pin 6 from reaching thecartridge 14 within the chamber 2. It also prevents thereceiver 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 thereceiver 3 up, thus urging the firing pin 6 away from the primer of theblank cartridge 14 positioned within the chamber 2. As the firing pin 6 is supported on theball 7, which is positioned between two facingconical surfaces - 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 theblank cartridge 14 in the cartridge chamber 2 will be thrust against the top of the firing pin 6 and thecartridge 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 thecartridge 14 will again be fired. - If, however, the grenade lands on its side, the pendulum-action 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 theball 7, the effect of theball 7 rolling in engagement with the twoconical surfaces 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 comprising:
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. The 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. The 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. The 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. The 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.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1502600.8 | 2015-02-17 | ||
GB201502600A GB201502600D0 (en) | 2015-02-17 | 2015-02-17 | Hand grenades |
Publications (1)
Publication Number | Publication Date |
---|---|
US20160238357A1 true US20160238357A1 (en) | 2016-08-18 |
Family
ID=52781702
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/044,421 Abandoned US20160238357A1 (en) | 2015-02-17 | 2016-02-16 | Hand grenades |
Country Status (2)
Country | Link |
---|---|
US (1) | US20160238357A1 (en) |
GB (2) | GB201502600D0 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1709798A (en) * | 1924-07-17 | 1929-04-16 | Lebensart Salamon | Explosive projectile |
US1749720A (en) * | 1927-10-07 | 1930-03-04 | Soc It Ernesto Breda | Impact ignition device |
US1770577A (en) * | 1922-11-03 | 1930-07-15 | Lebensart Salamon | Explosive missile |
US2358647A (en) * | 1940-08-08 | 1944-09-19 | Kula Wiktor | Hand grenade |
US20070283833A1 (en) * | 2006-06-07 | 2007-12-13 | George Ellis John W | Training grenade |
Family Cites Families (2)
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. |
NL99150C (en) * | 1957-07-25 |
-
2015
- 2015-02-17 GB GB201502600A patent/GB201502600D0/en not_active Ceased
-
2016
- 2016-02-15 GB GB1602610.6A patent/GB2535643B/en active Active
- 2016-02-16 US US15/044,421 patent/US20160238357A1/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1770577A (en) * | 1922-11-03 | 1930-07-15 | Lebensart Salamon | Explosive missile |
US1709798A (en) * | 1924-07-17 | 1929-04-16 | Lebensart Salamon | Explosive projectile |
US1749720A (en) * | 1927-10-07 | 1930-03-04 | Soc It Ernesto Breda | Impact ignition device |
US2358647A (en) * | 1940-08-08 | 1944-09-19 | Kula Wiktor | Hand grenade |
US20070283833A1 (en) * | 2006-06-07 | 2007-12-13 | George Ellis John W | Training grenade |
US7322296B2 (en) * | 2006-06-07 | 2008-01-29 | John William George Ellis | Training grenade |
Also Published As
Publication number | Publication date |
---|---|
GB201602610D0 (en) | 2016-03-30 |
GB2535643B (en) | 2017-08-02 |
GB201502600D0 (en) | 2015-04-01 |
GB2535643A (en) | 2016-08-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |