US20100300278A1 - Firearm with an improved breech bolt assembly - Google Patents
Firearm with an improved breech bolt assembly Download PDFInfo
- Publication number
- US20100300278A1 US20100300278A1 US12/245,170 US24517008A US2010300278A1 US 20100300278 A1 US20100300278 A1 US 20100300278A1 US 24517008 A US24517008 A US 24517008A US 2010300278 A1 US2010300278 A1 US 2010300278A1
- Authority
- US
- United States
- Prior art keywords
- breech bolt
- slide
- pin
- bolt assembly
- respect
- 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
Links
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
- F41A3/00—Breech mechanisms, e.g. locks
- F41A3/64—Mounting of breech-blocks; Accessories for breech-blocks or breech-block mountings
- F41A3/72—Operating handles or levers; Mounting thereof in breech-blocks or bolts
-
- 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
-
- 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
- F41A3/64—Mounting of breech-blocks; Accessories for breech-blocks or breech-block mountings
- F41A3/68—Bolt stops, i.e. means for limiting bolt opening movement
Definitions
- the present invention relates to a firearm with an improved breech bolt assembly.
- a breech bolt assembly comprising a breech bolt-slide and a breech bolt equipped with a locking head, is contained inside a body of a firearm, such as a repeat gun, and can be moved axially with respect to this.
- the breech bolt in particular, is housed in the slide so as to have a limited rotating and axial translatory movement for the opening of the firing chamber and its closing at the moment of firing.
- the breech bolt To enable the breech bolt to close the firing chamber, it must be equipped with closing guide rails activated by the relative movement between the slide and breech bolt, which takes place at the end of the advance movement of the breech bolt.
- closing guide rails activated by the relative movement between the slide and breech bolt, which takes place at the end of the advance movement of the breech bolt.
- the relative movement between the breech bolt and slide is prevented, except at the moment of closing and opening, when the breech bolt must also rotate with respect to the slide. This rotation is achieved by means of a cam of the slide engaged with a corresponding cursor of the breech bolt.
- the movement of the breech bolt also has the functions of housing a cartridge in the firing chamber from the magazine and ejecting a cartridge or cartridge case from the firing chamber.
- the loading or reloading procedure of the arm which is effected by moving the breech bolt along the direction of the barrel, is equally applied in the case of manual, semi-automatic or automatic functioning.
- the loading procedure of the first cartridge must be effected manually. For this reason all firearms with a magazine are equipped with a cocking handle, or reloading lever, produced in different ways.
- the cocking handle which is connected to the breech bolt and protrudes from the body of the arm, allows the user to intervene manually on the breech bolt without being able to reach this with his hand.
- the cocking handle is alternatively produced as part of the body, connected to the breech bolt by means of a joint, or it can be directly connected to the breech bolt itself, generally removably to allow the dismantling of the firearm.
- a simple and effective solution of the second type described consists in a cocking handle rigidly connected to the breech bolt protruding outside the body by means of a suitable opening or port.
- the port must be sufficiently long, in an axial direction, to allow the necessary movement of the breech bolt for the loading or unloading procedure.
- An objective of the present invention is to provide a firearm with an improved breech bolt assembly which guarantees a correct opening and closing synchronism of the firearm.
- a further objective of the present invention is to produce a firearm with an improved breech bolt assembly which allows an ambidextrous use.
- Another objective of the present invention is to provide a firearm with an improved breech bolt assembly which can be rapidly and simply disassembled without the help of specific tools and in which there are no small-sized loose components.
- FIG. 1 is a perspective view of a firearm equipped with an improved breech bolt assembly according to the invention
- FIG. 2 is a plan view of the breech bolt assembly according to the invention.
- FIG. 3 shows a section according to the trace III-III of the breech bolt assembly of FIG. 2 ;
- FIG. 4 is an exploded view of some details of the breech bolt assembly according to the invention.
- FIGS. 5-8 show a sectional view of some of the functioning opening phases of the improved breech bolt assembly according to the invention.
- FIGS. 9 and 10 show a sectional view of some of the functional closing phases of the improved breech bolt assembly according to the invention.
- FIGS. 11A-13A and 11 B- 13 B show a sectional view of various rotation phases of the cocking handle in the firearm according to the invention.
- the firearm 100 shown for illustrative and non-limiting purposes in FIG. 1 , comprises a breech bolt assembly 10 , a barrel 12 , a body 14 , or outer shell, also equipped on opposite sides with symmetrical openings 15 , or ports, for the right or left ejection of a cartridge case, in addition to a magazine 17 .
- the breech bolt assembly shown in FIGS. 2-4 , comprises a breech bolt 18 and a breech bolt-holder slide 21 , which can be moved together and separately in a direction parallel to the axis 22 of the barrel 12 , or axis of the firearm.
- the breech bolt 18 is equipped, at a front end, with a head 25 which is engaged in a barrel extension 24 , indicated for example in FIG. 5 , integral with the barrel 12 for the closing and opening of a firing chamber by rotation.
- the ejection ports of the cartridge cases 15 comprise a slit extension 16 towards the rear end of the opening 15 , having a lower height with respect to the port, to allow a cocking handle 23 , or reloading lever, to effect its necessary run.
- the cocking handle 23 which allows the user to intervene manually on the breech bolt assembly 10 , according to what is shown in FIGS. 2 and 3 , is assembled between the breech bolt and the slide 21 .
- the slide 21 is equipped on both sides close to the cocking handle 23 with seats 21 ′′ for coupling with complementary reliefs 123 of the cocking handle 23 .
- the cocking handle when in use, is positioned orthogonally with respect to the axis of the barrel 22 protruding laterally from the body 14 of the firearm 100 through the ports 15 alternating on one side or on the other side, as described and illustrated hereunder.
- stopping means prevent the relative movement between the breech bolt 18 and slide 21 .
- the stopping means consist of a control pin 28 , housed inside a seat 21 ′ of the slide 21 and which can be moved vertically to respectively disengage itself from a control seat 29 in the breech bolt 18 , overcoming the force of a specific recoil spring 30 .
- control pin When the breech bolt 18 is closed, the control pin is housed in a second containment seat 31 in the breech bolt 18 in an advanced position with respect to the control seat 29 .
- Cam guide rails of the vertical lifting of the control pin 28 are also envisaged, comprising a ramp 32 situated at a rear end of the containment seat 31 and a tilted coupling surface 24 ′ of the barrel extension 24 .
- the control pin 28 comprises a main cylindrical body coupled with the seat 21 ′ of the slide and a feeler end 28 ′, for example cylindrical with a smaller diameter, connected to the main body by conical surfaces 28 ′′ complementary to a conical hole 23 ′′ of the cocking handle 23 .
- the recoil spring 30 is, for example, a lamina spring constrained at a first end to the breech bolt-slide 21 and at the opposite end coupled with a seat 19 on the control pin 28 .
- the lamina spring comprises a “V”-folded portion 30 ′ near the constraining end with the pin 28 .
- the front branch of the folded portion 30 ′ is engaged with the tilted surface 24 ′, or cam, of the barrel extension 24 during the closing phases of the breech bolt.
- the barrel extension 24 is also equipped with a seat 24 ′′ for containing the folded portion 30 ′ of the spring 30 under closed breech bolt conditions.
- cam control means of the vertical lifting of the control pin 28 consist in a cam 20 , shown for example in FIG. 5 , integral with the body 14 in an upper facing position with respect to the control pin 28 , which, in correspondence with a cavity 20 ′, allows the vertical movement of the control pin 28 only within a pre-established range of the relative movement between the slide 21 and the body 14 .
- the breech bolt assembly 10 shown in FIG. 3 in section in an open breech bolt position, also has cam guiding means of the rotation for the closing or opening of the breech bolt which comprise a guiding cursor 26 , situated in one piece on the breech bolt 18 , which can be moved in engagement with a cam 27 of the slide 21 .
- the guiding means of the rotation of the breech bolt 10 are activated by the relative movement between the slide 21 and breech bolt 18 .
- FIGS. 5 to 8 which schematically show the reciprocal movement of the components, begins with the relative withdrawal movement of the breech bolt 18 with respect to the slide 21 (schematized in FIG. 5 with the arrow F 1 ).
- the control pin 28 which is initially housed in the containment seat 31 , is lifted vertically, guided by the ramp 32 , until it is disengaged from the breech bolt.
- the cavity 20 ′ of the cam 20 in the body 14 allows the control pin 28 to have this extracted position. Furthermore, the withdrawal of the slide 21 with respect to the breech bolt 18 , due to the cam 27 , causes the rotation of the breech bolt 18 itself and therefore the opening ( FIG. 6 ).
- the control pin 28 is unblocked.
- the coupling between the front branch of the “V”-portion 30 ′ of the recoil spring 30 with the tilted surface 24 ′ of the barrel extension 24 vertically lifts the pin 28 ( FIG. 10 ), this movement being allowed by the cavity 20 ′ of the cam 20 of the body 14 .
- the cocking handle 23 integral with the slide 21 on the right or left side, transmits to this, the advance and/or withdrawal movement described above for the firing phases.
- FIG. 2 shows, for illustrative purposes, the cocking handle 23 in the two operating positions, in a continuous line and dashed line.
- FIG. 11A and 11B respectively show a raised side view and sectional view according to the marked surface B-B, a breech bolt assembly 10 according to the invention, in which the cocking handle 23 is in an operating position.
- the cocking handle 23 is kept in a stable position for the rotation through engagement of the reliefs 123 with the complementary seats 21 ′′ of the slide 21 ( FIG. 11B ).
- the cocking handle 23 is disengaged from the seats 21 ′′ of the slide and is free to rotate around the axis of the pin 28 and be positioned, for example, longitudinally with respect to the barrel 12 , to allow the extraction of the breech bolt assembly 10 from the body without disassembling any piece ( FIGS. 13A and 13B ).
- the cocking handle 23 can be rotated on the opposite side, in a specular position with respect to FIGS. 12A and 12B , and consequently through a transversal passage in the direction of the slide 21 , it can be brought back into the stable operating position, which is specular with respect to FIGS. 11A and 11B .
- the action of the recoil spring 30 brings the control pin 28 back into engagement on the cocking handle 23 on the coupled conical surfaces.
- This procedure can also be effected with the firearm assembled.
- the assembly of the cocking handle 23 on the control pin 28 when the breech bolt is closed, at the end of the advance phase, allows the cocking handle 23 to be situated at the front end of the ejection port 15 of the body 14 , i.e. in the normal position of the cocking handle 23 .
- the firearm with an improved breech bolt assembly, object of the present invention also has the advantage of allowing a rapid assembly and disassembly without the removal of loose pieces.
Abstract
Description
- The present invention relates to a firearm with an improved breech bolt assembly.
- A breech bolt assembly, comprising a breech bolt-slide and a breech bolt equipped with a locking head, is contained inside a body of a firearm, such as a repeat gun, and can be moved axially with respect to this.
- The breech bolt, in particular, is housed in the slide so as to have a limited rotating and axial translatory movement for the opening of the firing chamber and its closing at the moment of firing.
- To enable the breech bolt to close the firing chamber, it must be equipped with closing guide rails activated by the relative movement between the slide and breech bolt, which takes place at the end of the advance movement of the breech bolt. In particular, during the advance and withdrawal of the breech bolt assembly the relative movement between the breech bolt and slide is prevented, except at the moment of closing and opening, when the breech bolt must also rotate with respect to the slide. This rotation is achieved by means of a cam of the slide engaged with a corresponding cursor of the breech bolt.
- The movement of the breech bolt also has the functions of housing a cartridge in the firing chamber from the magazine and ejecting a cartridge or cartridge case from the firing chamber.
- The loading or reloading procedure of the arm, which is effected by moving the breech bolt along the direction of the barrel, is equally applied in the case of manual, semi-automatic or automatic functioning. In any case, for all the functioning modes mentioned, the loading procedure of the first cartridge must be effected manually. For this reason all firearms with a magazine are equipped with a cocking handle, or reloading lever, produced in different ways.
- The cocking handle, which is connected to the breech bolt and protrudes from the body of the arm, allows the user to intervene manually on the breech bolt without being able to reach this with his hand.
- According to what is known, the cocking handle is alternatively produced as part of the body, connected to the breech bolt by means of a joint, or it can be directly connected to the breech bolt itself, generally removably to allow the dismantling of the firearm.
- A simple and effective solution of the second type described consists in a cocking handle rigidly connected to the breech bolt protruding outside the body by means of a suitable opening or port. In this case, the port must be sufficiently long, in an axial direction, to allow the necessary movement of the breech bolt for the loading or unloading procedure.
- An objective of the present invention is to provide a firearm with an improved breech bolt assembly which guarantees a correct opening and closing synchronism of the firearm.
- A further objective of the present invention is to produce a firearm with an improved breech bolt assembly which allows an ambidextrous use.
- Another objective of the present invention is to provide a firearm with an improved breech bolt assembly which can be rapidly and simply disassembled without the help of specific tools and in which there are no small-sized loose components.
- These objectives according to the present invention are achieved by producing a firearm with an improved breech bolt assembly as specified in claim 1.
- Further characteristics are indicated in the dependent claims.
- The characteristics and advantages of a firearm with an improved breech bolt assembly according to the present invention will appear more evident from the following illustrative and non-limiting description, referring to the enclosed schematic drawings, wherein:
-
FIG. 1 is a perspective view of a firearm equipped with an improved breech bolt assembly according to the invention; -
FIG. 2 is a plan view of the breech bolt assembly according to the invention; -
FIG. 3 shows a section according to the trace III-III of the breech bolt assembly ofFIG. 2 ; -
FIG. 4 is an exploded view of some details of the breech bolt assembly according to the invention; -
FIGS. 5-8 show a sectional view of some of the functioning opening phases of the improved breech bolt assembly according to the invention; -
FIGS. 9 and 10 show a sectional view of some of the functional closing phases of the improved breech bolt assembly according to the invention; -
FIGS. 11A-13A and 11B-13B show a sectional view of various rotation phases of the cocking handle in the firearm according to the invention. - With reference to the figures, these show a firearm with an improved breech bolt assembly indicated as a whole with 100.
- The
firearm 100, shown for illustrative and non-limiting purposes inFIG. 1 , comprises abreech bolt assembly 10, abarrel 12, abody 14, or outer shell, also equipped on opposite sides withsymmetrical openings 15, or ports, for the right or left ejection of a cartridge case, in addition to amagazine 17. - The breech bolt assembly, shown in
FIGS. 2-4 , comprises abreech bolt 18 and a breech bolt-holder slide 21, which can be moved together and separately in a direction parallel to theaxis 22 of thebarrel 12, or axis of the firearm. Thebreech bolt 18 is equipped, at a front end, with ahead 25 which is engaged in abarrel extension 24, indicated for example inFIG. 5 , integral with thebarrel 12 for the closing and opening of a firing chamber by rotation. - The ejection ports of the
cartridge cases 15 comprise aslit extension 16 towards the rear end of theopening 15, having a lower height with respect to the port, to allow acocking handle 23, or reloading lever, to effect its necessary run. - According to the invention, the
cocking handle 23, which allows the user to intervene manually on thebreech bolt assembly 10, according to what is shown inFIGS. 2 and 3 , is assembled between the breech bolt and theslide 21. In particular, according to the non-limiting example provided, theslide 21 is equipped on both sides close to thecocking handle 23 withseats 21″ for coupling withcomplementary reliefs 123 of thecocking handle 23. - The cocking handle, when in use, is positioned orthogonally with respect to the axis of the
barrel 22 protruding laterally from thebody 14 of thefirearm 100 through theports 15 alternating on one side or on the other side, as described and illustrated hereunder. - During the withdrawal of the
breech bolt assembly 10 after the opening phase of thehead 25 by rotation and until the closing of thehead 25 by rotation, stopping means prevent the relative movement between thebreech bolt 18 andslide 21. The stopping means consist of acontrol pin 28, housed inside aseat 21′ of theslide 21 and which can be moved vertically to respectively disengage itself from acontrol seat 29 in thebreech bolt 18, overcoming the force of aspecific recoil spring 30. - When the
breech bolt 18 is closed, the control pin is housed in asecond containment seat 31 in thebreech bolt 18 in an advanced position with respect to thecontrol seat 29. - Cam guide rails of the vertical lifting of the
control pin 28 are also envisaged, comprising aramp 32 situated at a rear end of thecontainment seat 31 and a tiltedcoupling surface 24′ of thebarrel extension 24. - The
control pin 28 comprises a main cylindrical body coupled with theseat 21′ of the slide and afeeler end 28′, for example cylindrical with a smaller diameter, connected to the main body byconical surfaces 28″ complementary to aconical hole 23″ of thecocking handle 23. - By pulling the cocking handle transversally with respect to the
axis 22, thecontrol pin 28 is raised vertically due to the contact on the complementary conical surfaces. The passage of thecocking handle 23 in a transversal direction with respect to theaxis 22 is enabled by the presence of agrooved seat 23′ situated in theconical hole 23″. - The
recoil spring 30 is, for example, a lamina spring constrained at a first end to the breech bolt-slide 21 and at the opposite end coupled with aseat 19 on thecontrol pin 28. The lamina spring comprises a “V”-foldedportion 30′ near the constraining end with thepin 28. The front branch of the foldedportion 30′ is engaged with thetilted surface 24′, or cam, of thebarrel extension 24 during the closing phases of the breech bolt. - The
barrel extension 24 is also equipped with aseat 24″ for containing the foldedportion 30′ of thespring 30 under closed breech bolt conditions. - Further cam control means of the vertical lifting of the
control pin 28, consist in acam 20, shown for example inFIG. 5 , integral with thebody 14 in an upper facing position with respect to thecontrol pin 28, which, in correspondence with acavity 20′, allows the vertical movement of thecontrol pin 28 only within a pre-established range of the relative movement between theslide 21 and thebody 14. - The
breech bolt assembly 10, shown inFIG. 3 in section in an open breech bolt position, also has cam guiding means of the rotation for the closing or opening of the breech bolt which comprise aguiding cursor 26, situated in one piece on thebreech bolt 18, which can be moved in engagement with acam 27 of theslide 21. - The guiding means of the rotation of the
breech bolt 10 are activated by the relative movement between theslide 21 andbreech bolt 18. - The opening of the breech bolt assembly, described on the base of
FIGS. 5 to 8 , which schematically show the reciprocal movement of the components, begins with the relative withdrawal movement of thebreech bolt 18 with respect to the slide 21 (schematized inFIG. 5 with the arrow F1). - The
control pin 28, which is initially housed in thecontainment seat 31, is lifted vertically, guided by theramp 32, until it is disengaged from the breech bolt. Thecavity 20′ of thecam 20 in thebody 14 allows thecontrol pin 28 to have this extracted position. Furthermore, the withdrawal of theslide 21 with respect to thebreech bolt 18, due to thecam 27, causes the rotation of thebreech bolt 18 itself and therefore the opening (FIG. 6 ). - The further withdrawal of the
slide 21 causes the upper end of thecontrol pin 28 to interfere with thecam 20 of the body, which causes the vertical lowering of thepin 28 engaged with thecontrol seat 29 of thebreech bolt 18. The action of therecoil spring 30, loaded by the previous lifting of the pin, also contributes to engage thepin 28 in thecontrol seat 29. - When the
pin 28 is engaged in the control seat 29 (FIG. 7 ), the reciprocal movement between theslide 21 andbreech bolt 18 is prevented, until thepin 28 is unblocked. In particular, thecontrol seat 29 does not allow the rotation of thebreech bolt 18. The withdrawal of theslide 21, according to the arrow F1, consequently also integrally entrains thebreech bolt 18 according to the arrow F2. - The withdrawal of the
slide 21 andbreech bolt 18 terminates with the possibility of housing a cartridge in the configuration ofFIG. 8 . - The closing phases of the breech bolt assembly, described on the basis of
FIGS. 9 and 10 , above all provide for the housing of the first cartridge of themagazine 17. - At the end of the advance movement of the
slide 21 andbreech bolt 18, according to the arrows F1 and F2 ofFIG. 9 , respectively, thecontrol pin 28 is unblocked. The coupling between the front branch of the “V”-portion 30′ of therecoil spring 30 with thetilted surface 24′ of thebarrel extension 24, vertically lifts the pin 28 (FIG. 10 ), this movement being allowed by thecavity 20′ of thecam 20 of thebody 14. - When the
breech bolt 18 reaches the end of its run (FIG. 10 ), the cam means 26 and 27 guide the rotational-translatory movement between thebreech bolt 18 and theslide 21, which is no longer hindered by thecontrol pin 28. - Under closed conditions of the breech bolt assembly, as shown in
FIG. 5 , thecontrol pin 28 is engaged in thecontainment seat 31. - For the manual reloading of the firearm, the cocking
handle 23, integral with theslide 21 on the right or left side, transmits to this, the advance and/or withdrawal movement described above for the firing phases. -
FIG. 2 shows, for illustrative purposes, the cockinghandle 23 in the two operating positions, in a continuous line and dashed line. -
FIG. 11A and 11B respectively show a raised side view and sectional view according to the marked surface B-B, abreech bolt assembly 10 according to the invention, in which the cocking handle 23 is in an operating position. The cocking handle 23 is kept in a stable position for the rotation through engagement of thereliefs 123 with thecomplementary seats 21″ of the slide 21 (FIG. 11B ). - In order to rotate the cocking handle 23 by 180° around the
pin 28, it is sufficient to open thebreech bolt assembly 10 in a more withdrawn position with respect to thecam 20 of thebody 14, so that thepin 28 can be lifted vertically without hindrances by moving the cocking handle 23 transversally with respect to the axis of thebarrel 22 following a limited run along the arrow T (FIG. 12B ). Thecontrol pin 28 is therefore lifted as a result of the coupling with the cockinghandle 23 on conical surfaces against the force of thespring 30. Thecontrol pin 28 remains in a lifted position resting on the flat upper surface of the cocking handle 23 (FIGS. 12A and 12B ). - The cocking handle 23 is disengaged from the
seats 21″ of the slide and is free to rotate around the axis of thepin 28 and be positioned, for example, longitudinally with respect to thebarrel 12, to allow the extraction of thebreech bolt assembly 10 from the body without disassembling any piece (FIGS. 13A and 13B ). - When the cocking
handle 23 is in a rotation position, thecontrol pin 28 is vertically extracted and protrudes with respect to theslide 21. - The interference between the
pin 28 andcam 20 of the body keeps thebreech bolt 18 firmly open during the rotation operations of the cocking handle. - By continuing the rotation, the cocking
handle 23 can be rotated on the opposite side, in a specular position with respect toFIGS. 12A and 12B , and consequently through a transversal passage in the direction of theslide 21, it can be brought back into the stable operating position, which is specular with respect toFIGS. 11A and 11B . The action of therecoil spring 30 brings thecontrol pin 28 back into engagement on the cocking handle 23 on the coupled conical surfaces. - This procedure can also be effected with the firearm assembled.
- When the cocking
handle 23 is in an operating position, arranged orthogonally with respect to theaxis 22 of thebarrel 12, this cannot be rotated and has all the advantages of a cocking handle firmly constrained to thebreech bolt assembly 10. - The necessity of lifting the
control pin 28 against the force of thespring 30 to rotate the cocking handle, also advantageously allows the movement to be more safely controlled. - The assembly of the cocking handle 23 on the
control pin 28, when the breech bolt is closed, at the end of the advance phase, allows the cocking handle 23 to be situated at the front end of theejection port 15 of thebody 14, i.e. in the normal position of the cockinghandle 23. - Furthermore, this advantageously allows the ejection port of the
cartridge cases 15, in any case present, to be used for the passage of the cockinghandle 23. It is sufficient, in fact, to envisage theadditional slit 16 towards the rear end of theport 15, with a lower height with respect to the port, to allow the cocking handle 23 to effect the whole run necessary. - This advantageously requires a minimum removal of material from the body and consequently a minimum weakening of the body itself, which is above all equal on opposite sides.
- The firearm with an improved breech bolt assembly, object of the present invention, also has the advantage of allowing a rapid assembly and disassembly without the removal of loose pieces.
- The firearm with an improved breech bolt assembly thus conceived, can undergo numerous modifications and variants, all included in the invention; furthermore all the details can be substituted by technically equivalent elements. In practice, the materials used, as also the dimensions, can vary according to technical requirements.
Claims (13)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI2007A001909 | 2007-10-04 | ||
IT001909A ITMI20071909A1 (en) | 2007-10-04 | 2007-10-04 | FIREARMS WITH PERFECTED SHUTTER GROUP |
ITMI2007A1909 | 2007-10-04 |
Publications (2)
Publication Number | Publication Date |
---|---|
US20100300278A1 true US20100300278A1 (en) | 2010-12-02 |
US7849777B1 US7849777B1 (en) | 2010-12-14 |
Family
ID=40210473
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/245,170 Active 2029-06-23 US7849777B1 (en) | 2007-10-04 | 2008-10-03 | Firearm with an improved breech bolt assembly |
Country Status (7)
Country | Link |
---|---|
US (1) | US7849777B1 (en) |
EP (1) | EP2045561B9 (en) |
CN (1) | CN101403585B (en) |
IL (1) | IL194212A (en) |
IT (1) | ITMI20071909A1 (en) |
RU (1) | RU2470246C2 (en) |
ZA (1) | ZA200808454B (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103518118A (en) * | 2011-01-14 | 2014-01-15 | 亚维斯特有限责任公司 | Firearm |
US8745911B2 (en) | 2011-11-17 | 2014-06-10 | Jing Zheng | Bolt assembly and bolt carrier assembly with switch mechanism for discharging spent casing from either side of firearm receiver without need of disassembling the firearm |
US20150226501A1 (en) * | 2013-04-20 | 2015-08-13 | Kevin W. Gibbens | Upper receiver assembly for a weapon |
US20160061542A1 (en) * | 2014-08-29 | 2016-03-03 | Sig Sauer, Inc. | Charging handle |
US20160341500A1 (en) * | 2015-05-22 | 2016-11-24 | L&O Hunting Group GmbH | Slide for a rifle |
US9513074B1 (en) * | 2015-06-01 | 2016-12-06 | Everett McDowell Steil | Firearm with interchangeable parts |
ITUB20159675A1 (en) * | 2015-12-29 | 2017-06-29 | Pezt Co S R L | CONVERSION DEVICE FOR FIREARMS |
US10488136B2 (en) | 2016-09-23 | 2019-11-26 | ArmWest, LLC | Selective fire firearm systems and methods |
Families Citing this family (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090241396A1 (en) * | 2008-03-31 | 2009-10-01 | Mcmanus Kasimere | Ergonomic charging handle for a rifle |
EP2141436A3 (en) * | 2008-07-01 | 2013-07-31 | Adcor Industries, Inc. | Operating handle for a firearm |
US20110174139A1 (en) * | 2010-01-21 | 2011-07-21 | Richard Brady Olsen | Rifle Charging handle with Ambidextrous Tactical latch mechanism |
US9038525B2 (en) | 2011-01-14 | 2015-05-26 | ArmWest, LLC | Firearm |
AU2011265747B2 (en) | 2010-03-25 | 2016-05-05 | Arm West, Llc | High capacity magazine with multiple springs |
US8973483B2 (en) | 2010-03-25 | 2015-03-10 | Arm West, Llc | Gas regulator system |
US8726560B2 (en) | 2010-04-28 | 2014-05-20 | 22 Evolution Llc | Chamber insert lock installed within an AR-15/16 barrel extension for locating and reducing movement of an associated sub caliber action |
CN102278913A (en) * | 2010-06-10 | 2011-12-14 | 何照光 | HZG small-scale submachine gun |
US9488423B2 (en) | 2011-01-14 | 2016-11-08 | Arm West, Llc | Firearm systems and methods |
US8590197B1 (en) * | 2011-05-04 | 2013-11-26 | Primary Weapons | Firearm conversion assembly and method |
US8899138B2 (en) * | 2011-09-08 | 2014-12-02 | Adcor Industries, Inc. | Firearm having a handle assembly for charging and forward assist |
US8997620B2 (en) | 2012-03-09 | 2015-04-07 | Adcor Industries, Inc. | Handle assembly for charging a direct gas impingement firearm |
US9188401B2 (en) | 2012-04-03 | 2015-11-17 | Jorge Pizano | Combined direct drive gas piston system, and frontal, ambidextrous, non reciprocating, charging system for autoloading rifle |
CN102620598A (en) * | 2012-04-24 | 2012-08-01 | 齐齐哈尔猎枪有限公司 | Pump type shotgun lock catch |
US9103611B2 (en) | 2012-08-08 | 2015-08-11 | Nemo Arms, Inc. | Compressible bolt carrier extension system |
US20140290472A1 (en) * | 2013-04-02 | 2014-10-02 | Sarsilmaz Silah Sanayi A.S. | Mechanism for firearms and its working method |
CN103822533B (en) * | 2014-03-10 | 2016-03-16 | 宋益伶 | Elasticity break-in extractor |
CA2952022A1 (en) * | 2014-06-12 | 2015-12-17 | Wiph, Llc | Firearm receiver with forward assist and bolt catch release |
US9541339B2 (en) | 2015-03-26 | 2017-01-10 | American Defense Manufacturing, Llc | Ambidextrously operable firearm receiver assembly |
WO2016181507A1 (en) * | 2015-05-12 | 2016-11-17 | 株式会社東京マルイ | Shock-absorption device for gun bolt stop |
US10228201B2 (en) | 2015-12-04 | 2019-03-12 | Wiph, Llc | Magazine and bolt release for firearm |
WO2018013650A1 (en) * | 2016-07-12 | 2018-01-18 | Amtec Less Lethal Systems, Inc. | Firearm bolt configured to prevent the firing of a conventional cartridge |
CN106705747B (en) * | 2016-12-22 | 2019-08-13 | 四川华庆机械有限责任公司 | Auto-manual opens bolt mechanism |
US10345059B2 (en) * | 2017-01-16 | 2019-07-09 | Gibbens Engineering Group, LLC | Side charger for a weapon |
US10598451B1 (en) * | 2017-05-25 | 2020-03-24 | Battlearms Ip, Llc | Charging assembly for a firearm |
CN107238317B (en) * | 2017-07-21 | 2023-03-31 | 南京理工大学 | Automatically controlled formula gun device that moves back |
US10443971B2 (en) | 2017-12-27 | 2019-10-15 | Magpul Industries Corp. | Foldable firearm |
DE102018001984B4 (en) | 2018-03-12 | 2021-09-23 | Heckler & Koch Gmbh | Through-loading device of a self-loading firearm and self-loading firearm equipped with a through-loading device |
CN108891185B (en) * | 2018-06-07 | 2020-11-24 | 杭州电子科技大学 | Full-automatic crystal bead serial connection method |
US10895424B2 (en) * | 2018-07-24 | 2021-01-19 | Saeilo Enterprises, Inc. | Firearm action |
US10989494B1 (en) | 2019-05-20 | 2021-04-27 | Bootleg Inc. | Firearm handguard system |
US11530891B2 (en) | 2020-10-05 | 2022-12-20 | Cobalt Kinetics | Reverse baffle compensator |
US11920886B2 (en) | 2021-02-10 | 2024-03-05 | Textron Systems Corporation | Cased telescoped weapon action feeding from a magazine |
CN113532198B (en) * | 2021-06-25 | 2022-10-18 | 南京理工大学 | Vertical pulling rifle bolt type sport rifle pre-shell-drawing mechanism |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3225653A (en) * | 1964-05-05 | 1965-12-28 | Charles F Packard | Charging handle assembly |
US3969983A (en) * | 1973-10-03 | 1976-07-20 | Werkzeugmaschinenfabrik Oerlikon-Buhrle | Breechblock for automatic firing weapon |
US4052926A (en) * | 1974-11-19 | 1977-10-11 | Ithaca Gun Company, Inc. | Charging handle for a gas-operated shotgun |
US4191089A (en) * | 1977-12-22 | 1980-03-04 | Steyr-Daimler-Puch-Aktiengesellschaft | Breech-closing mechanism for automatic rifle |
US4655118A (en) * | 1984-12-20 | 1987-04-07 | Werkzeugmaschinenfabrik Oerlikon-Buhrle Ag | Arrangement for locking a breechblock head at the rear end of a weapon barrel |
US5920028A (en) * | 1996-04-24 | 1999-07-06 | Heckler & Koch, Gmbh | Self-loading rifle with a rotatable breech block head |
US20050223613A1 (en) * | 2003-01-27 | 2005-10-13 | Terrence Bender | Gas operated action for auto-loading firearms |
US20070006720A1 (en) * | 2005-07-11 | 2007-01-11 | Guay Guay Trading Co., Ltd. | Retractable inner barrel structure of a bolt |
US7444775B1 (en) * | 2005-09-14 | 2008-11-04 | Schuetz Robert C E | Caliber convertible AR-15 upper receiver system |
US7707921B1 (en) * | 2008-10-07 | 2010-05-04 | Thomas Trail Hoel | Ambidextrous charging handle for firearm |
US7721639B2 (en) * | 2002-07-03 | 2010-05-25 | Heckler & Koch Gmbh | Methods and apparatus for use in a locked machine gun |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3928125A1 (en) * | 1989-08-25 | 1991-02-28 | Heckler & Koch Gmbh | LOADING DEVICE FOR SELF-LOADING HAND ARMS |
CN2178345Y (en) * | 1993-12-08 | 1994-09-28 | 南京理工大学 | Firing pin type single-trigger firing linkage mechanism |
RU2164333C2 (en) * | 1999-03-30 | 2001-03-20 | Глухов Александр Владимирович | Breechblock |
DE20202164U1 (en) * | 2002-02-13 | 2003-06-18 | Heckler & Koch Gmbh | Plastic housing with dust flap for handguns |
CN1467472A (en) * | 2002-06-25 | 2004-01-14 | 刘卫平 | Novel pistol |
ITMI20041893A1 (en) * | 2004-10-06 | 2005-01-06 | Beretta Armi Spa | FIREARMS WITH SELECTOR DEVICE FOR THE RIGHT OR LEFT EXPULSION OF A BOSSOLO |
DE102006006034B3 (en) * | 2006-02-09 | 2007-10-04 | Heckler & Koch Gmbh | Handgun with loading lever |
CN100587384C (en) * | 2006-03-14 | 2010-02-03 | 林风 | Pull-fork spring-pressing trigger system for gun |
-
2007
- 2007-10-04 IT IT001909A patent/ITMI20071909A1/en unknown
-
2008
- 2008-09-18 IL IL194212A patent/IL194212A/en active IP Right Grant
- 2008-09-27 CN CN200810168121.1A patent/CN101403585B/en active Active
- 2008-10-01 EP EP08165560.7A patent/EP2045561B9/en active Active
- 2008-10-03 ZA ZA200808454A patent/ZA200808454B/en unknown
- 2008-10-03 US US12/245,170 patent/US7849777B1/en active Active
- 2008-10-03 RU RU2008139240/11A patent/RU2470246C2/en active
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3225653A (en) * | 1964-05-05 | 1965-12-28 | Charles F Packard | Charging handle assembly |
US3969983A (en) * | 1973-10-03 | 1976-07-20 | Werkzeugmaschinenfabrik Oerlikon-Buhrle | Breechblock for automatic firing weapon |
US4052926A (en) * | 1974-11-19 | 1977-10-11 | Ithaca Gun Company, Inc. | Charging handle for a gas-operated shotgun |
US4191089A (en) * | 1977-12-22 | 1980-03-04 | Steyr-Daimler-Puch-Aktiengesellschaft | Breech-closing mechanism for automatic rifle |
US4655118A (en) * | 1984-12-20 | 1987-04-07 | Werkzeugmaschinenfabrik Oerlikon-Buhrle Ag | Arrangement for locking a breechblock head at the rear end of a weapon barrel |
US5920028A (en) * | 1996-04-24 | 1999-07-06 | Heckler & Koch, Gmbh | Self-loading rifle with a rotatable breech block head |
US7721639B2 (en) * | 2002-07-03 | 2010-05-25 | Heckler & Koch Gmbh | Methods and apparatus for use in a locked machine gun |
US20050223613A1 (en) * | 2003-01-27 | 2005-10-13 | Terrence Bender | Gas operated action for auto-loading firearms |
US20070006720A1 (en) * | 2005-07-11 | 2007-01-11 | Guay Guay Trading Co., Ltd. | Retractable inner barrel structure of a bolt |
US7444775B1 (en) * | 2005-09-14 | 2008-11-04 | Schuetz Robert C E | Caliber convertible AR-15 upper receiver system |
US7707921B1 (en) * | 2008-10-07 | 2010-05-04 | Thomas Trail Hoel | Ambidextrous charging handle for firearm |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9228786B2 (en) | 2011-01-14 | 2016-01-05 | ArmWest, LLC | Quick barrel change firearm |
CN103518118A (en) * | 2011-01-14 | 2014-01-15 | 亚维斯特有限责任公司 | Firearm |
US8745911B2 (en) | 2011-11-17 | 2014-06-10 | Jing Zheng | Bolt assembly and bolt carrier assembly with switch mechanism for discharging spent casing from either side of firearm receiver without need of disassembling the firearm |
US9310146B2 (en) * | 2013-04-20 | 2016-04-12 | Kevin W. Gibbens | Upper receiver assembly for a weapon |
US20150226501A1 (en) * | 2013-04-20 | 2015-08-13 | Kevin W. Gibbens | Upper receiver assembly for a weapon |
US9423195B2 (en) * | 2014-08-29 | 2016-08-23 | Sig Sauer, Inc. | Charging handle |
US20160061542A1 (en) * | 2014-08-29 | 2016-03-03 | Sig Sauer, Inc. | Charging handle |
US20160341500A1 (en) * | 2015-05-22 | 2016-11-24 | L&O Hunting Group GmbH | Slide for a rifle |
US9879929B2 (en) * | 2015-05-22 | 2018-01-30 | L&O Hunting Group GmbH | Slide for a rifle |
US9513074B1 (en) * | 2015-06-01 | 2016-12-06 | Everett McDowell Steil | Firearm with interchangeable parts |
US20170067708A1 (en) * | 2015-06-01 | 2017-03-09 | Everett McDowell Steil | Firearm with interchangeable parts |
ITUB20159675A1 (en) * | 2015-12-29 | 2017-06-29 | Pezt Co S R L | CONVERSION DEVICE FOR FIREARMS |
US10488136B2 (en) | 2016-09-23 | 2019-11-26 | ArmWest, LLC | Selective fire firearm systems and methods |
US11650023B2 (en) | 2016-09-23 | 2023-05-16 | Arm West, Llc | Selective fire firearm systems and methods |
Also Published As
Publication number | Publication date |
---|---|
ZA200808454B (en) | 2009-12-30 |
ITMI20071909A1 (en) | 2009-04-05 |
EP2045561A3 (en) | 2013-02-27 |
IL194212A (en) | 2012-09-24 |
RU2008139240A (en) | 2010-04-10 |
CN101403585B (en) | 2013-01-09 |
EP2045561A2 (en) | 2009-04-08 |
EP2045561B1 (en) | 2014-12-03 |
EP2045561B9 (en) | 2015-02-25 |
IL194212A0 (en) | 2009-08-03 |
RU2470246C2 (en) | 2012-12-20 |
US7849777B1 (en) | 2010-12-14 |
CN101403585A (en) | 2009-04-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7849777B1 (en) | Firearm with an improved breech bolt assembly | |
US8015742B2 (en) | Firearm with an ergonomic reloading control group | |
EP2788708B1 (en) | Slide takedown system and method for firearm | |
EP3237828B1 (en) | Safety mechanism for firearm | |
US10030926B2 (en) | Trigger housing mounting system for firearm | |
US10113830B2 (en) | Pump-action firearm with bolt carrier locking mechanism and folding butt stock | |
US7941955B2 (en) | Pivoting, non-detachable magazine | |
EP2661600B1 (en) | Magazine disconnect mechanism for firearm | |
US7487612B2 (en) | Grenade launcher | |
EP2661599B1 (en) | Lockable safety for firearm | |
US20060032103A1 (en) | Machine guns having detachable barrels and methods of operating the same | |
US20090064556A1 (en) | Slide retraction levers for use with firearms | |
US1618510A (en) | Automatic firearm | |
US9733031B1 (en) | Rotary lockup action | |
US9803940B2 (en) | Shell loading system for firearm | |
KR20220030194A (en) | Weapon receiver for a self-loading firearm and a self-loading firearm equipped with a weapon receiver | |
EP0890813B1 (en) | Semiautomatic rifle with lateral feeding mechanism and ejection from below | |
US2713227A (en) | Extractor and loading means for firearms |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: FABBRICA D'ARMI PIETRO BERETTA S.P.A., ITALY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ZEDROSSER, ULRICH;REEL/FRAME:021634/0970 Effective date: 20080926 |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
MAFP | Maintenance fee payment |
Free format text: PAYMENT OF MAINTENANCE FEE, 8TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1552) Year of fee payment: 8 |
|
MAFP | Maintenance fee payment |
Free format text: PAYMENT OF MAINTENANCE FEE, 12TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1553); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY Year of fee payment: 12 |