Bolt action firearm

Description

Field of the Present Disclosure

[0001] The present disclosure generally relates to firearms, and more particularly to a bolt action firearm that enables a bolt assembly to be easily assembled and disassembled and minimizes the weight of the bolt assembly.Background of the Present Disclosure

[0002] Bolt action firearms provide many advantages to a user, including enhanced accuracy, reliability, and ease of use. Conventional bolt assemblies can have significant disadvantages, including difficulty of assembly during manufacture and challenges associated with field stripping, such as requiring tools. Conventional bolt assemblies can also be heavy because many parts must be designed to withstand chamber pressures when a host firearm is fired.

[0003] Therefore, a need exists for a new and improved bolt action firearm that enables a bolt assembly to be easily assembled and disassembled, and minimizes the weight of the bolt assembly.

[0004] CA 1043145 discloses a bolt for a firearm, and in particular a bolt for a rifle with bolt action loading, comprising a bolt body having a central bore which comprises in its front part a bolt head with latches and in its rear part a searing head with an aperture for guiding a projection secured to a nut which is detachably fixed to a striker rod, and a bore for detachably inserting a bolt lever, the bolt body including its head, the latches and the searing head being made from a single solid piece of metal. This Background is provided to introduce a brief context for the Detailed Description that follows. This Background is not intended to be an aid in determining the scope of the claimed subject matter nor be viewed as limiting the claimed subject matter to implementations that solve any or all of the shortcomings or problems presented above.Summary of the Present Disclosure

[0005] The invention is defined by the enclosed claims.

[0006] The present disclosure includes an improved bolt action firearm.

[0007] A bolt action firearm comprises a frame defining a bolt passage. The bolt action firearm comprises an elongated bolt assembly configured to reciprocate within the bolt passage. The elongated bolt assembly defines a firing pin passage. The bolt action firearm comprises a firing pin assembly received in the firing pin passage and configured to reciprocate between a forward and rearward position. The bolt action firearm comprises a bolt handle having an inner end configured to removably engage the firing pin assembly and an opposed free end. The bolt handle inner end has opposed spaced-apart prongs defining a bolt handle channel having a first width. The bolt handle defines a pocket associated with the bolt handle channel and having a second width greater than the first width. The firing pin assembly has a handle engagement portion having a first section having a first thickness configured to be received in the bolt handle channel. The firing pin assembly has a second section adjacent to the first section and having a second thickness greater than the first width and less than the second width, such that when the second section is biased into the pocket, the firing pin assembly is secured against passage through the bolt handle channel.

[0008] The pocket has a wall portion facing at least in part away from the inner end and configured to prevent removal of the bolt handle from the firing pin assembly when the second section of the firing pin assembly is in the pocket.

[0009] The wall portion is cylindrical.

[0010] The second section of the firing pin assembly has a shoulder at the first section.

[0011] The shoulder is a flat surface.

[0012] The elongated bolt assembly defines a handle aperture lateral to the firing pin passage and configured to receive the bolt handle.

[0013] The elongated bolt assembly includes a bolt carrier defining a passage receiving a bolt having a bolt face.

[0014] The bolt carrier and bolt are formed of different materials.

[0015] The firing pin passage has an open end, and the firing pin assembly has an actuation end accessible via the open end of the firing pin passage.

[0016] The firing pin assembly is movable in response to force at the actuation end to move the second section out of the pocket to enable extraction of the bolt handle.

[0017] The present disclosure includes an improved bolt assembly for a bolt action firearm.

[0018] A bolt assembly is configured to operate within a bolt passage of a firearm. The bolt assembly comprises a bolt body defining a firing pin passage. The bolt assembly comprises a firing pin assembly received in the firing pin passage and configured to reciprocate between a forward and rearward position. The bolt assembly comprises a bolt handle having an inner end configured to removably engage the firing pin assembly and an opposed free end. The bolt handle inner end has opposed spaced-apart prongs defining a bolt handle channel having a first width. The bolt handle defines a pocket associated with the bolt handle channel and having a second width greater than the first width. The firing pin assembly has a handle engagement portion having a first section having a first thickness configured to be received in the bolt handle channel. The firing pin assembly has a second section adjacent to the first section and having a second thickness greater than the first width and less than the second width, such that when the second section is biased into the pocket, the firing pin is secured against passage through the bolt handle channel.

[0019] The pocket has a wall portion facing at least in part away from the inner end and configured to prevent removal of the bolt handle from the firing pin assembly when the second section of the firing pin assembly is in the pocket.

[0020] The wall portion is cylindrical.

[0021] The second section of the firing pin assembly has a shoulder at the first section.

[0022] The shoulder is a flat surface.

[0023] The bolt assembly defines a handle aperture lateral to the firing pin passage and configured to receive the bolt handle.

[0024] The bolt assembly includes a bolt carrier defining a passage receiving a bolt having a bolt face.

[0025] The bolt carrier and bolt are formed of different materials.

[0026] The firing pin passage has an open end, and the firing pin assembly has an actuation end accessible via the open end of the firing pin passage.

[0027] The firing pin assembly is movable in response to force at the actuation end to move the second section out of the pocket to enable extraction of the bolt handle.

[0028] There has thus been outlined, rather broadly, the more important features presented in order that the detailed description thereof that follows may be better understood and in order that the present contribution to the art may be better appreciated.Brief Description of the Drawings

[0029] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate several embodiments and, together with the description, serve to explain the disclosed principles. In the drawings: Fig. 1 is a top isometric view of an example bolt action firearm constructed in accordance with the principles of disclosed embodiments. Fig. 2 is an exploded view of an example bolt assembly consistent with disclosed embodiments. Fig. 3 is a side sectional view of an example bolt assembly consistent with disclosed embodiments. Fig. 4 is an enlarged view of an example bolt handle consistent with disclosed embodiments. Fig. 5A is a side sectional view of an example bolt assembly consistent with disclosed embodiments. Fig. 5B is a side sectional view of an example bolt assembly consistent with disclosed embodiments. Fig. 6 is a side sectional view of a portion of an example bolt action firearm consistent with disclosed embodiments after the bolt action firearm has been discharged. Fig. 7 is a top isometric view of an example bolt assembly consistent with disclosed embodiments. Fig. 8 is a partially exploded view of an example bolt assembly with a bolt handle removed showing a first example step of disassembly as consistent with disclosed embodiments. Fig. 9 is a partially exploded view of an example bolt assembly of with a bolt handle and firing pin mount removed showing a second example step of disassembly as consistent with disclosed embodiments. Fig. 10 is a partially exploded view of an example bolt assembly with a bolt handle, firing pin mount, and bolt carrier removed showing a third example step of disassembly as consistent with disclosed embodiments. Fig. 11 is an exploded view of an example bolt assembly showing the bolt assembly in an example disassembled condition as consistent with disclosed embodiments.

[0030] The same reference numerals refer to the same parts throughout the various figures.Detailed Description of Embodiments

[0031] Many example embodiments of a bolt action firearm are shown and generally designated by the reference numeral 10.

[0032] Fig. 1 illustrates an example bolt action firearm 10 constructed in accordance with the principles of disclosed embodiments. More particularly, bolt action firearm 10 has a frame 12 defining a bolt passage 14. Bolt passage 14 may be configured to receive an elongated bolt assembly 16 configured to reciprocate within the bolt passage. An elongated bolt assembly 16 may comprise a bolt carrier 18. A bolt carrier 18 may define a handle passage 20. A handle passage 20 may be configured to receive one end of a bolt handle 22.

[0033] Figs. 2-3 illustrate an example elongated bolt assembly 16 consistent with disclosed embodiments. Fig. 4 illustrates an example bolt handle 22 consistent with disclosed embodiments. More particularly, elongated bolt assembly 16 may include bolt carrier 18. Bolt carrier 18 may define passage 56. Passage 56 may be configured to receive bolt body 58. Bolt body 58 may comprise a bolt face 60. Bolt body 58 may define a firing pin passage 24. A firing pin assembly 26 may be received in firing pin passage 24. Firing pin assembly 26 may be configured to reciprocate between a forward and rearward position. Bolt handle 22 may comprise an inner end 28. Inner end 28 may be configured to removably engage firing pin assembly 26. Bolt handle 22 may comprise an opposed free end 30. Inner end 28 may comprise opposed spaced-apart prongs 32 defining a bolt handle channel 34 having a first width 36. Bolt handle 22 may define a pocket 38 associated with bolt handle channel 34. Pocket 28 may comprise a second width 40 greater than first width 36. Firing pin assembly 26 may comprise a handle engagement portion 42. Handle engagement portion 42 may comprise a first section 44 having a first thickness 46. First section 44 may be configured to be received in bolt handle channel 34. Firing pin assembly 26 may comprise a second section 48 adjacent to first section 44. Second section 48 may comprise a second thickness 50. Second thickness 50 may be greater than first width 36 and less than second width 40 such that when second section 48 is biased into pocket 28 by spring 70, firing pin assembly 26 is secured against passage through bolt handle channel 34.

[0034] As is shown in Fig. 4, pocket 38 may comprise a wall portion 52 facing at least in part away from inner end 28 and may be configured to prevent removal of bolt handle 22 from firing pin assembly 26 when second section 48 of the firing pin assembly is in the pocket. In some embodiments, wall portion 52 is cylindrical. Second section 48 of firing pin assembly 26 may comprise a shoulder 54 at first section 44. In some embodiments, shoulder 54 comprises a flat surface. Bolt body 58 may define a handle aperture 62 lateral to firing pin passage 24. Handle aperture 62 may be configured to receive bolt handle 22.

[0035] According to an embodiment, bolt carrier 18 and bolt body 58 may be formed of different materials. In one embodiment, bolt carrier 18 may be formed of aluminum to reduce weight, and bolt body 58 may be formed of steel to be capable of withstanding the stresses resulting from discharge of a bolt action firearm 10. Firing pin passage 24 may comprise an open end 64. Passage 56 may comprise an open end 66 axially registered with open end 64. Firing pin assembly 26 may comprise an actuation end 68 accessible via open end 66 of passage 56 and open end 64 of firing pin passage 24. Firing pin assembly 26 may be movable in response to force at actuation end 68 to move second section 48 forward out of pocket 38 to enable extraction of bolt handle 22. A firing pin mount 72 may comprise one end 74 received in a bore 76 in firing pin assembly 26. Firing pin mount 72 may comprise an opposed end 78 protruding from a slot 80 in bolt carrier 18.

[0036] Figs. 5A-B illustrate en example bolt assembly 16 consistent with disclosed embodiments. More particularly, Figs. 5A-B show an actuation end 66 of firing pin assembly 26 having been pushed forward relative to a normal operating position shown in Fig. 3 to enable extraction of bolt handle 22. As can be seen in Fig. 5A, second section 48 of handle engagement portion 42 has been moved forward out of pocket 38 in inner end 28 of bolt handle 22 to enable extraction of the bolt handle through handle aperture 62 in bolt body 58 and handle passage 20 in bolt carrier 18. Shoulder 54 is no longer obstructed by wall portion 52. Fig. 5B is identical to Fig. 5A except for showing elongated bolt assembly 16 after bolt handle 22 has been removed as a first step in disassembly of the elongated bolt assembly.

[0037] Fig. 6 illustrates a portion of bolt action rifle 10 after discharge when trigger 82 has been pulled to release firing pin mount 72 from being held back in a cocked position by sear 84. Firing pin assembly 26 has traveled forward so the firing pin assembly can discharge a cartridge (not shown) chambered in barrel 86 of bolt action rifle 10. It should be appreciated that firing pin mount 72 does not travel so far forward during discharge that the firing pin mount can disengage from bore 76 in firing pin assembly 26.

[0038] Figs. 7-11 illustrate an example bolt assembly 16 consistent with disclosed embodiments. More particularly, figs 8-11 illustrate an example sequence to disassemble elongated bolt assembly 16. Fig. 7 shows elongated bolt assembly 16 in a normal operating condition, which is the condition the elongated bolt assembly is in after having been removed from bolt passage 14 of frame 12 of bolt action rifle 10. Fig. 8 shows elongated bolt assembly 16 in a first example step of disassembly. Actuation end 68 of firing pin assembly 26 has been pushed forward through open end 66 of bolt carrier 18 and open end 64 of firing pin passage 24 so bolt handle 22 can be extracted as described previously. Fig. 9 shows elongated bolt assembly 16 in a second example step of disassembly. After bolt handle 22 has been extracted, firing pin assembly 26 can be pushed further forward so firing pin mount 72 can be extracted from bore 76 in the firing pin assembly through slot 80 in bolt carrier 18. Fig. 10 shows elongated bolt assembly 16 in a third example step of disassembly. After firing pin mount 72 has been extracted, bolt body 58 can be withdrawn from bolt carrier 18 through forward opening 88 in passage 56 in the bolt carrier. Fig. 11 shows elongated bolt assembly 16 in an example disassembled condition. After bolt body 58 has been withdrawn from bolt carrier 18, firing pin assembly 26 may be withdrawn rearwardly through open end 64 of firing pin passage 24 in the bolt body.

[0039] According to an embodiment, a bolt action firearm may comprise a frame defining a bolt passage. A bolt action firearm may comprise an elongated bolt assembly. An elongated bolt assembly may be configured to reciprocate within a bolt passage. An elongated bolt assembly may define a firing pin passage. A bolt action firearm may comprise a firing pin assembly received in a firing pin passage. A firing pin assembly may be configured to reciprocate between a forward and rearward position. A bolt action firearm may comprise a bolt handle having an inner end configured to removably engage a firing pin assembly. The bold handle may comprise an opposed free end. A bolt handle inner end may have opposed spaced-apart prongs defining a bolt handle channel having a first width. A bolt handle may define a pocket associated with a bolt handle channel and having a second width greater than the first width. A firing pin assembly may have a handle engagement portion having a first section having a first thickness configured to be received in a bolt handle channel. A firing pin assembly may have a second section adjacent to the first section and having a second thickness greater than the first width and less than the second width. When the second section is biased into a pocket, a firing pin assembly is secured against passage through a bolt handle channel.

[0040] According to an embodiment, a pocket may have a wall portion facing at least in part away from an inner end and configured to prevent removal of a bolt handle from a firing pin assembly when a second section of the firing pin assembly is in the pocket.

[0041] According to an embodiment, a wall portion may be cylindrical.

[0042] According to an embodiment, a second section of a firing pin assembly may have a shoulder at a first section.

[0043] According to an embodiment, a shoulder may comprise a flat surface.

[0044] According to an embodiment, an elongated bolt assembly may define a handle aperture lateral to a firing pin passage and configured to receive a bolt handle.

[0045] According to an embodiment, an elongated bolt assembly may include a bolt carrier defining a passage receiving a bolt having a bolt face.

[0046] According to an embodiment, a bolt carrier and bolt may be formed of different materials.

[0047] According to an embodiment, a firing pin passage may have an open end. A firing pin assembly may have an actuation end accessible via an open end of a firing pin passage.

[0048] According to an embodiment, a firing pin assembly may be movable in response to force at an actuation end to move a second section out of a pocket to enable extraction of a bolt handle.

[0049] According to an embodiment, a bolt assembly may be configured to operate within a bolt passage of a firearm. A bolt assembly may comprise a bolt body defining a firing pin passage. A bolt assembly may comprise a firing pin assembly received in a firing pin passage. A firing pin assembly may be configured to reciprocate between a forward and rearward position. A bolt assembly may comprise a bolt handle. A bolt handle may comprise an inner end configured to removably engage a firing pin assembly. The bolt handle may comprise an opposed free end. A bolt handle inner end may comprise opposed spaced-apart prongs defining a bolt handle channel having a first width. A bolt handle may define a pocket associated with a bolt handle channel and having a second width greater than the first width. A firing pin assembly may comprise a handle engagement portion having a first section having a first thickness and configured to be received in a bolt handle channel. A firing pin assembly may comprise a second section adjacent to the first section and having a second thickness greater than the first width and less than the second width. When the second section is biased into a pocket, a firing pin may be secured against passage through a bolt handle channel.

[0050] According to an embodiment, a bolt assembly may define a handle aperture lateral to a firing pin passage and configured to receive a bolt handle.

[0051] According to an embodiment, a bolt assembly may comprise a bolt carrier defining a passage receiving a bolt having a bolt face.

[0052] In the context of the specification, the terms "rear" and "rearward," and "front" and "forward," have the following definitions: "rear" or "rearward" means in a direction away from a muzzle (for example, 90) of a firearm while "front" or "forward" means it is in a direction towards the muzzle of the firearm.

[0053] In this specification, "a" and "an" and similar phrases are to be interpreted as "at least one" and "one or more." References to "a", "an", and "one" are not to be interpreted as "only one". In this specification, the term "may" is to be interpreted as "may, for example." In other words, the term "may" is indicative that the phrase following the term "may" is an example of one of a multitude of suitable possibilities that may, or may not, be employed to one or more of the various embodiments. References to "an" embodiment in this disclosure are not necessarily to the same embodiment.

[0054] In this specification, various embodiments are disclosed. Limitations, features, and / or elements from the disclosed example embodiments may be combined to create further embodiments within the scope of the disclosure.

[0055] In addition, it should be understood that any figures that highlight any functionality and / or advantages, are presented for example, purposes only. The disclosed architecture is sufficiently flexible and configurable, such that it may be utilized in ways other than that shown.

[0056] Furthermore, many features presented above are described as being optional through the use of "may" or the use of parentheses. For the sake of brevity and legibility, the present disclosure does not explicitly recite each and every permutation that may be obtained by choosing from the set of optional features. However, the present disclosure is to be interpreted as explicitly disclosing all such permutations. For example, a rifle stock described as having three optional features may be embodied in seven different ways, namely with just one of the three possible features, with any two of the three possible features or with all three of the three possible features.

Claims

1. A bolt action firearm (10) comprising: a frame (12) defining a bolt passage (14); an elongated bolt assembly (16) configured to reciprocate within the bolt passage; the elongated bolt assembly defining a firing pin passage (24), the firing pin passage having an open end (64); the bolt assembly (16) comprising a firing pin assembly (26) received in the firing pin passage and configured to reciprocate between a forward and rearward position, the firing pin assembly having an actuation end (68) accessible via the open end of the firing pin passage; a bolt handle (22) having an inner end (28) configured to removably engage the firing pin assembly and an opposed free end (30); the bolt handle inner end having opposed spaced-apart prongs (32) defining a bolt handle channel (34) having a first width (36); the bolt handle defining a pocket (38) associated with the bolt handle channel and having a second width (40) greater than the first width; the firing pin assembly having a handle engagement portion (42) having a first section (44) having a first thickness (46) configured to be received in the bolt handle channel; and the firing pin assembly having a second section (48) adjacent to the first section and having a second thickness (50) greater than the first width and less than the second width, such that when the second section is biased into the pocket, the firing pin assembly is secured against passage through the bolt handle channel, characterized in that the firing pin assembly is movable in response to force at the actuation end to move the second section out of the pocket to enable extraction of the bolt handle.

2. The bolt action firearm of claim 1 wherein the pocket (38) has a wall portion (52) facing at least in part away from the inner end (28) and configured to prevent removal of the bolt handle (22) from the firing pin assembly (26) when the second section (48) of the firing pin assembly is in the pocket.

3. The bolt action firearm of claim 1 wherein the elongated bolt assembly (16) defines a handle aperture (62) lateral to the firing pin passage (24) and configured to receive the bolt handle (22).

4. The bolt action firearm of claim 1 wherein the elongated bolt assembly (16) includes a bolt carrier (18) defining a passage (56) receiving a bolt (58) having a bolt face (60).

5. The bolt action firearm of claim 4 wherein the bolt carrier (18) and bolt (58) are formed of different materials.

6. A bolt assembly (16) configured to operate within a bolt passage (14) of a firearm (10), the bolt assembly comprising: a bolt body (58) defining a firing pin passage (24), the firing pin passage having an open end (64); a firing pin assembly (26) received in the firing pin passage and configured to reciprocate between a forward and rearward position, the firing pin assembly having an actuation end (68) accessible via the open end of the firing pin passage; a bolt handle (22) having an inner end (28) configured to removably engage the firing pin assembly and an opposed free end (30); the bolt handle inner end having opposed spaced-apart prongs (32) defining a bolt handle channel (34) having a first width (36); the bolt handle defining a pocket (38) associated with the bolt handle channel (34) and having a second width (40) greater than the first width; the firing pin assembly having a handle engagement portion (42) having a first section (44) having a first thickness (46) configured to be received in the bolt handle channel; and the firing pin assembly having a second section (48) adjacent to the first section and having a second thickness (50) greater than the first width and less than the second width, such that when the second section is biased into the pocket, the firing pin assembly is secured against passage through the bolt handle channel, characterized in that the firing pin assembly is movable in response to force at the actuation end to move the second section out of the pocket to enable extraction of the bolt handle.

7. The bolt assembly of claim 6 wherein the pocket (38) has a wall portion (52) facing at least in part away from the inner end (28) and configured to prevent removal of the bolt handle (22) from the firing pin assembly (26) when the second section (48) of the firing pin assembly (26) is in the pocket.

8. The bolt assembly of claim 6 wherein the second section (48) of the firing pin assembly (26) has a shoulder (54) at the first section (44).

9. The bolt assembly of claim 6 wherein the bolt assembly (16) defines a handle aperture (62) lateral to the firing pin passage (24) and configured to receive the bolt handle (22).

10. The bolt assembly of claim 6 wherein the bolt assembly (16) includes a bolt carrier (18) defining a passage (56) receiving a bolt (58) having a bolt face (60).

11. The bolt assembly of claim 10 wherein the bolt carrier (18) and bolt (58) are formed of different materials.