EP3891460B1 - Firing pin safety of a bolt of a firearm - Google Patents
Firing pin safety of a bolt of a firearm Download PDFInfo
- Publication number
- EP3891460B1 EP3891460B1 EP19823781.0A EP19823781A EP3891460B1 EP 3891460 B1 EP3891460 B1 EP 3891460B1 EP 19823781 A EP19823781 A EP 19823781A EP 3891460 B1 EP3891460 B1 EP 3891460B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- firing pin
- bolt
- bolt body
- pin
- safety
- 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.)
- Active
Links
- 238000010304 firing Methods 0.000 title claims description 102
- 230000000284 resting effect Effects 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
- F41A17/00—Safety arrangements, e.g. safeties
- F41A17/64—Firing-pin safeties, i.e. means for preventing movement of slidably- mounted strikers
- F41A17/66—Firing-pin safeties, i.e. means for preventing movement of slidably- mounted strikers automatically operated, i.e. operated by breech opening or closing movement
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
- F41A3/00—Breech mechanisms, e.g. locks
- F41A3/12—Bolt action, i.e. the main breech opening movement being parallel to the barrel axis
- F41A3/14—Rigid bolt locks, i.e. having locking elements rigidly mounted on the bolt or bolt handle and on the barrel or breech-housing respectively
- F41A3/16—Rigid bolt locks, i.e. having locking elements rigidly mounted on the bolt or bolt handle and on the barrel or breech-housing respectively the locking elements effecting a rotary movement about the barrel axis, e.g. rotating cylinder bolt locks
- F41A3/26—Rigid bolt locks, i.e. having locking elements rigidly mounted on the bolt or bolt handle and on the barrel or breech-housing respectively the locking elements effecting a rotary movement about the barrel axis, e.g. rotating cylinder bolt locks semi-automatically or automatically operated, e.g. having a slidable bolt-carrier and a rotatable bolt
Definitions
- a firearm, firing pin safety catch mechanism comprising a bolt having a face and proximal end for receiving a firing pin, a bolt carrier, a fi ring pin having a distil end, a proximal end opposite the distil end and a recess, or catch surface, disposed in proximity to the proximal end, a hammer which is moveable from a cocked position through a travel path to make contact with the firing pin, a firing pin spring biasing the firing pin into a rest portion wherein the distil end of the firing pin is designed to be spaced from the forward face of the bolt. and a safety catch mechanism.
- the firing pin safety according to the invention the slamfire is automatically prevented and the firing pin safety according to the invention is applicable in all firearms with revolving type bolts.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Insertion Pins And Rivets (AREA)
- Emergency Lowering Means (AREA)
Description
- The present invention relates to firing pin safeties for firearms. More precisely the present invention relates to a firing pin safety of a bolt of a firearm according to the preamble part of claim 1.
- In US patent publication
US 2010/0313459 is disclosed a firearm, firing pin safety catch mechanism comprising a bolt having a face and proximal end for receiving a firing pin, a bolt carrier, a fi ring pin having a distil end, a proximal end opposite the distil end and a recess, or catch surface, disposed in proximity to the proximal end, a hammer which is moveable from a cocked position through a travel path to make contact with the firing pin, a firing pin spring biasing the firing pin into a rest portion wherein the distil end of the firing pin is designed to be spaced from the forward face of the bolt. and a safety catch mechanism. - In
US patent publication 4,658,529 is disclosed a firing pin safety mechanism for a weapon provided with a slide having a firing pin channel, comprising: a firing pin mounted for sliding movement between a "ready" position wherein at least one end of the firing pin extends outside said firing pin channel and a "sheathed" position wherein both ends of said firing pin are disposed within the firing pin channel, said firing pin being yieldingly loaded to said "ready" position, a safety channel in the weapon slide extending transversely of the firing pin channel and intersecting the firing pin channel, a safety mounted in said safety channel for sliding movement between "on" and "off" positions, said safety and firing pin being provided with cam means for moving said firing pin to and locking said firing pin in the "sheathed" position when said safety is moved to the "on" position and for releasing said firing pin for movement to said "ready" position when said safety is moved to the "off" position. - In
US patent publication 4,389,919 is disclosed a firing pin block with an enlarged head or abutment formed on the firing pin, which is engageable with the rear end of the bolt carrier slide to block the firing pin from any forward protrusion beyond the bolt face until locking lugs formed on the breech bolt are at least partially, and locked into complementary lugs on the barrel or barrel extension, in which the blocking action is achieved by coordination of the relative longitudinal movements of the bolt carrier and bolt with the operation of cam means. - In
US patent publication 2,626,474 is disclosed a firearm having a slide reciprocable between a recoil and a counter-recoil position and means on the slide for actuating a bolt between a battery and a recoil position, the combination of, a firing pin slidably mounted in the bolt for longitudinal movement between a fired and a retracted position, which firing pin has an elongated transverse slot therethrough, a slidable firing pin retractor transversely mounted in the bolt so as to extend through said firing pin slot, first cam means in the slide for actuating said retractor in one direction during recoil and in the opposite direction during counter-recoil, and second cam means located on said retractor for moving said firing pin rearwardly to the retracted position during recoil of the slide. - One problem in firearms, usually in semi-automatic or automatic firearms, is a slamfire, which is a premature, unintended discharge of a firearm and which typically may occur, when a bolt of the firearm stops rapidly, while a firing pin continues its movement by inertia forward and hits and sets off a primer. Sometimes, the firing pin only causes a dent onto the primer but in the worst cases the slamfire occurs. Typically, the slamfire is prevented by providing the firing pin with a spring around it for slowing down the movement but in all cases the spring is not effective enough as the force of the spring is not enough to prevent the continuation of the movement of the firing pin. In case one should try to prevent the continuation of the movement of the firing pin in order to prevent the slamfire by increasing preventing force of the spring, it would also mean that the force of the striking hammer should also be increased, which may then cause other problems in the firearm.
- An object of the present invention is to create a firing pin safety of a bolt of a firearm by which the above described problems relating to the possible slamfire are eliminated or at least minimized.
- Another object of the present invention is to create a new type of a firing pin safety of a bolt of a firearm, in which slamfire is prevented automatically.
- In order to achieve the above objects and those that will come apparent later the firing pin safety of a bolt of a firearm is mainly characterized by the features of the characterizing part of claim 1.
- Dependent claims present advantageous features and embodiments of the invention.
- According to the invention the bolt comprises a bolt carrier, a firing pin and a bolt body, in which the bolt body is located in a bolt body channel formed to the bolt carrier as a central opening in longitudinal direction of the bolt carrier, in which a cam pin is provided for turning movement of the bolt body, in which the firing pin is located in a firing pin channel formed to the bolt body as a central opening in longitudinal direction of the bolt body, and in which in the firing pin channel around the firing pin a spring is located for keeping the firing pin in back position and for slowing down movement of the firing pin, wherein the bolt comprises an automatic firing pin safety provided by a safety element located in between guides at each side of the bolt carrier setting the position of the safety element.
- According to an advantageous feature the safety element is used by the turning of the bolt body.
- According to an advantageous feature of the invention the spring is located between the cam pin and a radially extending shoulder formed on and around the firing pin for keeping the firing pin in its back position.
- According to the invention the guides are movable in respect of the bolt body forward/backward by turning movement of and simultaneously moved by the bolt body such that the guides move the safety element sideways.
- According to an advantageous feature of the invention the bolt closed or near closed the safety element is movable sideways to a position, where the firing pin passes the safety element and the firearm can be fired.
- According to an advantageous feature of the invention a stopper is provided at the back part of the firing pin resting in a groove of the firing pin for keeping the firing pin inside the bolt body and in the firing pin channel.
- By the firing pin safety according to the invention the slamfire is automatically prevented and the firing pin safety according to the invention is applicable in all firearms with revolving type bolts.
- In the following the invention and its advantages are explained in greater detail below in the sense of example and with reference to accompanying drawing, where
- in
figure 1 is schematically shown an exploded view of an advantageous example of the invention, - in
figure 2 is schematically shown the advantageous example offigure 1 , when the bolt is open, - in
figure 3 is schematically shown the example offigure 2 with projections offigures 4A-4B marked, - in
figures 4A-4B are schematically shown the projections A-A and B-B offigure 3 , - in
figure 5 is schematically shown the example offigure 1 , when the bolt is closed, - in
figure 6 is schematically shown the example offigure 5 with projections offigures 7A-7B marked and - in
figures 7A-7B are schematically shown the projections C-C and D-D offigure 6 . - During the course of the following description like numbers and signs will be used to identify like elements according to the different views which illustrate the invention and its advantageous example. In the figures some repetitive reference signs have been omitted for clarity reasons.
- As shown in the example of
figure 1 thebolt 10 comprises afiring pin 15, abolt body 22, abolt carrier 32 with acam pin 34 andguides 35 located inopenings 36 at each side of thebolt carrier 32. Through thebolt carrier 32 extends abolt body channel 33, into which thebolt body 22 is located and through thebolt body 22 extends afiring pin channel 23 for thefiring pin 15. To secure the firing pin 15 astopper 19 is provided. Additionally, the bolt comprises aspring 17 located around thefiring pin 15 in thefiring pin channel 23, as can be seen for example infigures 4A-4B and7A-7B . - In
figures 2-4B thebolt 10 and the firing pin safety is shown, when the bolt is open. As can be seen in this position the movement of thefiring pin 15 is prevented by thesafety element 25 positioned between theguides 35 after thecam pin 34 has turned thebolt body 22 to the open position. - In
figures 5-7B thebolt 10 and the firing pin safety is shown, when the bolt is closed. As can be seen in this position thefiring pin 15 can pass thesafety element 25 and the firearm can be fired as thesafety element 25 has been moved sideways to a position guided by the guides after thecam pin 34 has turned thebolt body 22 to the closed position. - In the following function of the
bolt 10 and the firing pin safety is explained with reference to thefigures 1-7B . - The
cam pin 34 is in contact with thebolt body 22 and when thecam pin 34 is turned also thebolt body 22 moves. Thebolt carrier 32 is provided with acam pin groove 37 for thepivot pin 34. Thebolt body 22 can turn for example 45° as defined by thecam pin 34 and thecam pin groove 37 in thebolt carrier 32. Due to the turning movement of thebolt body 22, thebolt body 22 moves forwards/backward in thebolt body channel 33. The turning movement of for example 45 ° causes that lockingsurfaces 24, for example fourlocking surfaces 24 of thebolt body 22 will be set locked and thus to a bolt closed position, in which the firearm can be fired. Inside thebolt body 22 in thefiring pin channel 23 thefiring pin 15 is provided to move. Around thefiring pin 15 and between thecam pin 34 and ashoulder 18 of thefiring pin 15 thespring 17 is located to keep thefiring pin 15 in its back position. Astopper 19 is provided at the back part of thefiring pin 15 resting in agroove 14 of thefiring pin 15 to keep thefiring pin 15 inside thebolt body 22 and in thefiring pin channel 23. - When the firearm is fired a strike hammer of the firearm strikes the back end of the
firing pin 15 and the movement of thefiring pin 15 caused by the strike sets primer of the cartridge. During the charging cycle thebolt 10 is pushed backwards by a force of the gas piston and/or recoil simultaneously the used case is ejected. The force of the bolt return spring (not shown) returns thebolt 10 forward and a next cartridge is provided. - The
bolt 10 according to the invention comprises an automatic firing pin safety provided by a safety element, which is used by the turning of thebolt body 22 in thebolt carrier 32. - When the
bolt 10 is moving in open state forward until thebolt body 22 stops, thesafety element 25 is in on-position and prevents movement of thefiring pin 15 further forward and the movement of thefiring pin 15 is prevented. Thesafety element 25 is located in between theguides 35 at each side of thebolt carrier 32 setting the position of thesafety element 25 preventing the movement of thefiring pin 15. - When the
bolt body 22 turns theguides 35 move in respect of thebolt body 22 forward and simultaneously moves by the guides thesafety element 25 sideways. At this stage the movement and inertia of thefiring pin 15 is over. When thebolt 10 is closed or near closed-position, thesafety element 25 has been moved sideways to a position, where thefiring pin 15 can pass thesafety element 25 and the firearm can be fired. Although features have been described with reference to certain embodiments or examples, those features may also be present in other embodiments or examples whether described or not. -
- 10
- bolt
- 14
- groove
- 15
- firing pin
- 17
- spring
- 18
- shoulder
- 19
- stopper
- 22
- bolt body
- 23
- firing pin channel
- 24
- locking surfaces
- 25
- safety element
- 32
- bolt carrier
- 33
- bolt body channel
- 34
- cam pin
- 35
- guide
- 36
- guide opening
- 37
- cam pin groove
Claims (4)
- A bolt for a firearm with a firing pin safety, wherein the bolt (10) comprises a bolt carrier (32), a firing pin (15) and a bolt body (22),in which the bolt body (22) is located in a bolt body channel (33) formed to the bolt carrier (32) as a central opening in longitudinal direction of the bolt carrier (32),in which a cam pin (34) is provided for turning movement of the bolt body (22),in which the firing pin (15) is located in a firing pin channel (23) formed to the bolt body (22) as a central opening in longitudinal direction of the bolt body (22),and in which in the firing pin channel (23) around the firing pin (15) a spring (17) is located for keeping the firing pin (15) in back position and for slowing down movement of the firing pin (15),characterized in that the bolt (10) comprises an automatic firing pin safety provided by a safety element (25) located in between guides (35) at two sides of the bolt carrier (32) opposite each other, setting the position of the safety element (25) by the turning movement of the bolt body (22) and that the guides (35) are configured to be movable in respect of the bolt body (22) forward/backward by the turning movement of the bolt body (22) provided by the cam pin (34) and simultaneously configured to be moved by the bolt body (22) such that the guides (35) provide movement of the safety element (25) sideways setting the position of the safety element (25).
- The bolt according to claim 1, characterized in that the spring (17) is located between the cam pin (34) and a radially extending shoulder (18) formed on and around the firing pin (15) for keeping the firing pin (15) in its back position.
- The bolt according to any of previous claims, characterized in that the safety element (25) is configured to be movable sideways to a position, where the firing pin (15) passes the safety element (25) and the firearm can be fired when the bolt (10) is in closed or near closed position.
- The bolt according to any of previous claims, characterized in that a stopper (19) is provided at the back part of the firing pin (15) resting in a groove (14) of the firing pin (15) for keeping the firing pin (15) inside the bolt body (22) and in the firing pin channel (23).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI20186045A FI128200B (en) | 2018-12-04 | 2018-12-04 | Firing pin safety of a bolt of a firearm |
PCT/FI2019/050869 WO2020115367A1 (en) | 2018-12-04 | 2019-12-04 | Firing pin safety of a bolt of a firearm |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3891460A1 EP3891460A1 (en) | 2021-10-13 |
EP3891460B1 true EP3891460B1 (en) | 2024-07-10 |
Family
ID=68806358
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19823781.0A Active EP3891460B1 (en) | 2018-12-04 | 2019-12-04 | Firing pin safety of a bolt of a firearm |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3891460B1 (en) |
CA (1) | CA3121729A1 (en) |
FI (1) | FI128200B (en) |
WO (1) | WO2020115367A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2021276556A1 (en) | 2020-05-20 | 2022-12-01 | Sako Oy | Firing pin safety of a firearm |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH152282A (en) * | 1929-11-09 | 1932-01-31 | Frommer Rudolf Von | Cylinder lock for self-loading firearms. |
US2626474A (en) * | 1951-03-15 | 1953-01-27 | John L Lochhead | Firing pin retracting means for firearms |
US4389919A (en) * | 1980-02-14 | 1983-06-28 | Remington Arms Company, Inc. | Firing pin block for firearm with a rotary breech bolt |
US4658529A (en) | 1984-08-15 | 1987-04-21 | William Bertolini | Firing pin safety mechanism |
US8245427B2 (en) | 2009-06-10 | 2012-08-21 | Lwrc International, Llc | Firing pin safety device for auto-loading firearms |
-
2018
- 2018-12-04 FI FI20186045A patent/FI128200B/en active IP Right Grant
-
2019
- 2019-12-04 EP EP19823781.0A patent/EP3891460B1/en active Active
- 2019-12-04 CA CA3121729A patent/CA3121729A1/en active Pending
- 2019-12-04 WO PCT/FI2019/050869 patent/WO2020115367A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
EP3891460A1 (en) | 2021-10-13 |
WO2020115367A1 (en) | 2020-06-11 |
CA3121729A1 (en) | 2020-06-11 |
FI128200B (en) | 2019-12-13 |
FI20186045A1 (en) | 2019-12-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US11713933B2 (en) | Semiautomatic firearm | |
US9714804B2 (en) | Firearm with safe axis firing pin and center aligned barrel | |
US10584928B2 (en) | Cased telescoped ammunition firearm with translating chamber | |
US4389919A (en) | Firing pin block for firearm with a rotary breech bolt | |
US11656040B2 (en) | Bolt stop with a locking device for an automatic firearm, and a grip stock and receiver equipped therewith | |
US4505183A (en) | Gas actuated operating mechanism for autoloading firearm | |
EP3891460B1 (en) | Firing pin safety of a bolt of a firearm | |
US4161836A (en) | Breechblock assembly and an operating mechanism for a fire-arm automatic loading | |
AU2017334260A1 (en) | A bolt action receiver assembly for a semiautomatic lower receiver | |
CA2480015C (en) | Trigger mechanism for small firearms | |
EP0107920B1 (en) | A firearm | |
US3380341A (en) | Safing means for high rate of fire multi-barrel automatic weapon | |
EP1106955B1 (en) | Firearm having inertia striker mechanism | |
US5726376A (en) | Breechblock system for a gun | |
US2920538A (en) | Bolt mechanism for firearms | |
US4450752A (en) | Gas operated automatic weapon | |
CA1145984A (en) | Firing pin block for firearm with a rotary breech bolt | |
WO2023229560A1 (en) | Ergonomic rifle with a mechanizm holder | |
KR100671587B1 (en) | Device for locking a closure in a repeating weapon |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20210603 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
INTG | Intention to grant announced |
Effective date: 20240319 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE PATENT HAS BEEN GRANTED |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 602019055076 Country of ref document: DE |