Bolt-Action Firearm Device
20260063381 ยท 2026-03-05
Assignee
Inventors
Cpc classification
F41A3/20
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
International classification
F41A3/20
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Abstract
A bolt-action mechanism for accelerating the cycling speed of a firearm is provided. The bolt-action mechanism includes a rail configured to couple with a portion of a firearm, the rail is configured for reciprocation axially along the firearm, a cam defining a slot formed in a portion thereof, the slot is sizably configured to engage a portion of the firearm, and a charging handle, wherein the bolt-action mechanism is configured to cycle the firearm.
Claims
1. A bolt-action mechanism for a firearm, the bolt-action mechanism comprising: a rail configured to couple with a portion of a firearm, the rail is configured for reciprocation axially along the firearm; a cam defining a slot formed in a portion thereof, the slot is sizably configured to engage a portion of the firearm; and a charging handle; wherein the bolt-action mechanism is configured to cycle the firearm.
2. The bolt-action mechanism of claim 1, further comprising a collar configured to engage a bolt of the firearm, the collar defining a pin configured to be received by slot.
3. The bolt-action mechanism of claim 1, wherein the rail guide is configured to engage with a mounting structure of the firearm.
4. The bolt-action mechanism of claim 3, wherein the mounting structure is a picatinny rail or a dovetail.
5. The bolt-action mechanism of claim 1, wherein the slot defines a travel path for the pin.
6. The bolt-action mechanism of claim 5, wherein the travel path is based on any of a rotation and a reciprocation of a bolt during charging.
7. The bolt-action mechanism of claim 1, wherein the bolt-action mechanism is configured to combine a reciprocal and a rotational motion of the bolt defined by cycling the firearm into a linear motion.
8. The bolt-action mechanism of claim 1, wherein the slot comprises a handgrip portion.
9. The bolt-action mechanism of claim 1, wherein the cam comprises a curvilinear cross section adapted to a curvature of the firearm.
10. The bolt-action mechanism of claim 1, further comprising a picatinny rail disposed superjacent to the mechanism.
11. A kit for accelerating a cycling speed of a firearm, comprising: a rail configured to couple with a portion of a firearm, the rail is configured for reciprocation axially along the firearm; a cam defining a slot formed in a portion thereof, the slot is sizably configured to engage a portion of the firearm; and a charging handle; wherein the kit is configured to cycle the firearm.
12. The kit of claim 11, further comprising a collar configured to engage a bolt of the firearm, the collar defining a pin configured to be received by slot.
13. The kit of claim 11, wherein the rail is configured to engage with a mounting structure of the firearm.
14. The kit of claim 13, wherein the mounting structure is a picatinny rail or a dovetail.
15. The kit of claim 11, wherein the slot defines a travel path for the pin.
16. The kit of claim 15, wherein the travel path is based on a rotation and a reciprocation of a bolt during charging.
17. The kit of claim 11, wherein the kit is configured to combine a reciprocal and a rotational motion of the bolt defined by cycling the firearm into a linear motion.
18. The kit of claim 11, wherein the slot comprises a handgrip portion.
19. The kit of claim 11, wherein the cam comprises a curvilinear cross section adapted to a curvature of the firearm.
20. The kit of claim 11, wherein the kit is configured to adapt to a Remington model 700 bolt-action rifle.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0009] The present disclosure is detailed through various drawings, where like components or steps are indicated by identical reference numbers for clarity and consistency.
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[0021]
DETAILED DESCRIPTION OF THE DISCLOSURE
[0022] Again, the present disclosure generally relates to firearms and, more specifically, mechanisms to modify the operation thereof. The device can include a rail. The rail can be removably coupled to a portion of a firearm, for example the picatinny rails. The rail can connect to a cam. The cam can be a structure which can articulate a bolt of the firearm. For example, the cam can receive the bolt handle or a portion thereof and can be configured to define a travel path. The travel path can correspond to the linearized motion of the bolt through its cycle. The cam and rail can be articulated via a handle mounted on a portion of the device. Importantly, the device can be structured to allow open access to the chamber or any portion of the firearm. In other words, the mechanism is formed such that it does not shield or cover portion of the firearm. The device can include a safety trigger which can regulate the motion of the device.
[0023] Advantageously, the device can allow for faster cycling of a bolt-action rifle. Often, bolt-action rifles require a combination of rotating the bolt in the barrel to take the bolt out of battery and a reciprocating motion to cycle the firearm (extraction, ejection, and relocating). This is followed by rotating the bolt back into battery prior to firing. In certain scenarios in which rate of fire is of the essence, such a process can take too long to accomplish. The device of the present disclosure solves this problem by consolidating the motion required to cycle the firearm into a single reciprocating motion.
Bolt-Action Device
[0024] A Firearm is any type of gun which uses an explosive charge to fire a projectile and is designed to be readily carried by an individual. Such weapons have existed since the early 10.sup.th century and have seen substantial improvement since their conception. One common way to categorize firearms is by their action. The action of the firearm refers to the process by which the gun is cycled, such as single shot, single action, double action, bolt-action, lever action, pump action, and autoloading such as semi-auto and fully automatic. Bolt-action rifles are particularly noted for their robustness, simplicity, and reliability. Further, there exists a large selection of bolt-action rifles today as they are common in many parts of the world.
[0025] Many governments have restricted civilian access to firearms based on their action, in part because the action has a heavy influence on the rate of fire of firearms. In particular, autoloading weapons have been restricted as a result of the high rate of fire they are able to achieve. In such states, other actions such as bolt-actions have become more prominent as they are generally not regulated. However, there are many situations where the rate of fire, or the time it takes to fire the weapon is of the essence, such as competition shooting and hunting scenarios. Bolt-action firearms typically require longer cycling times when compared to autoloading firearms. As such, aspects of the present disclosure seek to reduce the cycling time of bolt-action firearms. More generally, devices of the present disclosure can increase the rate of fire of firearms.
[0026] Turning now to
[0027] The bolt-action mechanism 100 can include a rail 102. The rail 102 can be an elongated member which can engage with the mounting structure of the firearm 10. The rail 102 can include a static portion and a reciprocating portion. The static portion can rigidly engage with the mounting structure of the firearm 10. The reciprocating portion can translate across a surface of the static portion. In some aspects, the rail 102 can telescope and can be configured to extend and retract along a linear path. More generally, a portion of the rail 102 can reciprocate. The length of reciprocation can generally be the throw of the action of the firearm. In some aspects, the rail 102 can be clamped onto the firearm 10. In other aspects, the rail 102 can be attached to the firearm 10 via a fastening mechanism, such as a threaded fastener, a snap fit, or other similar retention mechanism. The rail 102 can be releasably secured to the firearm 10. The rail 102 can define a top mounting system 122 configured to mount accessories, such as an optic. The mounting system 122 replaces the mounting structure of the firearm 10 that the bolt-action mechanism 100 uses such that the use of accessories is not impeded. The bolt-action mechanism 100 can be configured to interact with a bolt 12 of the firearm 10.
[0028] The bolt-action mechanism 100 can include a handgrip 301. The handgrip 301 can be a portion of the bolt-action mechanism 100 which can be adapted to be modulated by the user. It is envisioned that the handgrip 301 is ergonomically configured to facilitate actuation by a user while so engaged with the firearm 10. The handgrip 301 can be connected to the rail 102, and more specifically, can be connected to the reciprocating portion of the rail 102. The handgrip 301 can be disposed substantially perpendicular to the rail 102. The bolt-action mechanism 100 can include a collar 104. The collar 104 can be coupled to the rail 102. The collar 104 can be a substantially rigid body and can be disposed perpendicularly to the rail 102 and the handgrip 301. The collar 104 can be configured to couple the motion of the handgrip 301 and the rail 102. In some aspects, the collar 104 can define a curvilinear body which can be substantially similar to the curvature of the firearm 10. In typical aspects, the curvilinear body of the collar 104 can ensure that the bolt-action mechanism 100 or any portion thereof can remain proximal to the weapon during use. The bolt-action mechanism 100 can include a cam 105. The cam 105 can be connected to any of the handgrip 301, the collar 104, or the rail 102. The cam 105 can engage the bolt 12 of the firearm 10 via a pin 251. The cam 105 is configured to receive the pin 251. The firearm 10 can include a safety 302 configured to prevent the firearm 10 from firing unintentionally, a trigger 13, configured to fire the weapon when pulled, and a buttstock 14 configured to engage a user and support the weapon.
[0029] Turning now to
[0030] The cam 105 can be configured to receive the pin 251. The pin 251 can be a small rigid cylinder or any suitable structure configured to constrain motion while received by the cam 105. The pin 251 can be disposed between the cam 105 and the bolt 12 of the firearm 10. More specifically, the pin 251 can be configured to guide the bolt 12 of the firearm 10 by following the slot 250 of the cam 105 while in engagement with the bolt 12. The pin 251 can be coupled with a hinge pin which can assist in the coupling or guidance of the cam 105 and bolt handle. In some aspects, the pin 251 can be installed onto the bolt of the firearm 10 and can be configured to engage with the slot 250 of the cam 105. In other aspects, the pin 251 can be coupled to the bolt 12 via the collar 104. The pin 251 can be formed of a substantially rigid material such as titanium or an alloy thereof. Such use of titanium or a titanium can increase the strength and resilience of the pin 251 as it is a relatively small part. The pin 251 can be substantially wear resistant and can be configured to freely slide within the slot 250.
[0031] The cam 105 can include a handgrip hole 331. The handgrip hole 331 can be configured to engage a portion of the handgrip 301. For example, the handgrip 301 can be received by the handgrip hole 331 and form a mortise and tenon style joint. The handgrip hole 331 can receive the handgrip 301 and retain the same via a threaded connection, a friction fit, adhesion, or the like.
[0032] Turning now to
[0033] The rail 102 can be fastened to a portion of the cam 105 via the threaded fastener 115. Moreover, the cam 105 can be joined to the rail 102 at a rearward portion thereof, such that the cam 105 and the rail 102 can move together when cycled. The threaded fastener 115 can be, without limitation, a hex head screw, a torx screw, an Allen head screw, a slotted head screw, a button screw, a set screw, a bolt, a machine screw, a threaded insert, a tapered head or countersunk screw, or a cross dowel bolt. A portion of the inside of the rail 102 and/or cam 105 can define a groove configured to engage with a dovetail or picatinny rail on the firearm 10. The cam 105 can define a locating feature, such as a dowel, or tenon which can be received by a portion of the rail 102 and constructed to locate the cam 105 relative to the rail 102. More generally, the cam 105 can be disposed on a rearward portion of the bolt-action mechanism 100, wherein the rearward portion is proximal to the buttstock 14 of the firearm 10. It is envisioned that the curvature of the cam 105 can retain the components of the bolt-action mechanism 100 close to the firearm 10. It is envisioned that any portion of the bolt-action mechanism 100 can be formed of a substantially rigid material, such as metals or polymers which are typically used for firearm component manufacture. Such components include, but are not limited to: steel, carbon steel, stainless steel, chromoly steel, aluminum, titanium, polymer-coated metals, alloy steels, Nylon such as Nylon 6 or Nylon 6/6, polycarbonate, glass reinforced epoxy laminate such as G10, Zytel, ABS, and carbon fiber reinforced polymers.
[0034] Turning now to
[0035] Turning now to
[0036] In typical aspects, the pin 251 can extend through the slot 250 of the cam 105. Such arrangement can ensure that the pin 251 does not accidentally slide out of the slot 250 or lose engagement therewith. The cam 105 can be formed to wrap around the firearm 10, and more generally, adopt a similar curvature of the firearm 10. Importantly, the cam 105 can be spaced sufficiently far away from the breach 11 or other parts of the firearm 10 to not impede the action when the firearm 10 is being cycled.
[0037] Turning now to
[0038] Turning now to
Operation
[0039] In a general operational aspect of the device of the disclosure, the bolt-action mechanism 100 can be configured to cycle the firearm 10. It is envisioned that the bolt-action mechanism 100 can be a kit that is readily coupled with a variety of bolt-action firearms 10, for example a Remington 700 with little to no modifications. Advantageously, similar firearms to the Remington 700 can be the host for the bolt-action mechanism 100. Essentially, the device of the present disclosure can be a conversion kit for existing firearms 10, or an add-on device which can be installed onto the firearm 10. The bolt-action mechanism 100 can engage the gun rail 109, such as the picatinny rail. It is envisioned that the bolt-action mechanism 100 will engage via the rail 102 to an uppermost portion of the firearm 10. Generally, the bolt-action mechanism 100 will be designed to clear the breach 11 of the firearm 10 such that the operation thereof will remain unobstructed. Once the bolt-action mechanism 100 is mounted to the firearm 10, the cam 105 of the bolt-action mechanism 100 can be engaged with the bolt, such as via the bolt handle. The bolt-action mechanism 100 can utilize the pin 251 to engage the bolt 12.
[0040] In one aspect, the bolt-action mechanism 100 is designed to move back and forth (reciprocate) relative to the firearm 10 or along a major axis of the firearm 10 (along with the barrel). Specifically, the mechanism 100, or any of its components, can be configured to travel along the firearm's 10 length. To operate, the user can apply rearward force to the charging handle 103 or the handgrip 301. In some configurations, the user can also engage the safety 302 while simultaneously pulling the handgrip 301. The force applied to the bolt-action mechanism 100 can actuate the device. The motion of the bolt-action mechanism 100 is intended to resemble the charging action of a direct impingement or spring-driven firearm, wherein the user pulls back on the charging handle 103 in one smooth, continuous one dimensional motion. This approach design eliminates the traditional dual movement required by standard bolt-action rifles, which involves both rotating and pulling the bolt. Instead, this mechanism simplifies the action to a single fluid pull, enhancing ease of use and operational efficiency.
[0041] Once the bolt-action mechanism 100 has been fully pulled back and is in the open position, the user can urge the bolt-action mechanism 100 forward, thereby reversing the motivation on the handgrip 301 or more generally the charging handle 103. Again, a user can first pull rearwardly towards the buttstock 14 of the weapon in a first linear action and subsequently can complete the cycle by pushing forward on the charging handle 103 or handgrip. It is envisioned that the bolt-action mechanism 100 can move linearly along the major axis of the weapon, wherein the major axis is parallel with the barrel of the firearm 10. In some aspects, the static portion of the rail 102 can be the only portion of the bolt-action mechanism 100 which does not move relative to the firearm 10.
[0042] The cam 105 is engaged with the bolt of the firearm 10 during some aspects of use. The cam 105 is adapted such that the bolt will follow the slot 250 of the cam 105. The cam 105 is responsible for applying a vector force on the bolt. More generally, the cam 105 is able to apply a force having multiple components simultaneously. The pin 251, while engaged with the cam 105 and slot 250, follows the travel path of the slot 250 and guides the bolt 12. The travel path refers to the shape of the slot 250. As the bolt-action mechanism 100 is cycled, the bolt 12 follows the travel path of the slot 250. Importantly, the travel path can be a linearized path that the bolt 12 would travel if cycled without the bolt-action mechanism 100. For example, the travel path can be mapped if a user cycled the weapon and followed the orientation of the bolt handle while the firearm 10 is being cycled. Whenever the bolt-action mechanism 100 is cycled, the action of the firearm 10 can be completed because the cam 105 moves the bolt handle in the same path that it normally takes during cycling. In other words, the bolt 12, by following the slot 250 of the cam 105 is urged to take the path it is required to take when being cycled. Thus, by urging the bolt-action mechanism 100 in a single linear direction, the cam 105 is able to urge the bolt to follow the path required to cycle the firearm 10.
[0043] In example, the cam 105 can engage with the firearm's bolt 12 during operation, guiding its movement. Specifically, the cam 105 is designed so that the bolt 12 follows the path defined by the slot 250 in the cam 105. This cam 105 imparts a vector force on the bolt 12, which can have multiple directional components simultaneously, or linear and axial components simultaneously. The pin 251, which is engaged with both the bolt 12 and the slot 250, travels along the slot's 250 path, thereby guiding the bolt 12. The shape of the slot 250 determines the travel path of the bolt. As the bolt-action mechanism 100 is cycled, the bolt 12 is guided along this path. This path mimics the linearized motion that the bolt would naturally follow if the firearm were manually cycled without the aid of the bolt-action mechanism.
[0044] For example, if a user manually cycled the firearm 10 and observed the movement of the bolt 12 handle, the travel path would match the orientation and motion of the bolt 12 handle during operation. Whenever the bolt-action mechanism 100 is cycled, the cam 105 ensures that the bolt 12 handle moves along the same path it would normally take during manual cycling. In essence, by simply pulling the bolt-action mechanism 100 in one linear motion, the cam 105 directs the bolt along the correct path required to complete the firearm's cycling action, allowing for smoother and more efficient operation. The bolt 12 handle is essentially replaced by the pin 251 and guided by the cam 105 as if the bolt 12 handle was guided by the user during its natural cycle pattern. Importantly, the geometry of the slot 250 can include bevels and curves which can constantly comport with the orientation of the pin 251 along the travel path. The user can either actuate the bolt-action mechanism 100 via the charging handle 103 or the handgrip 301.
[0045] Notably, the user only inputs a single backward pulling motion and subsequent pushing forward motion in a single axis, whereas in order to cycle an ordinary bolt-action firearm requires a complex motion comprising at least a rotation of the bolt and subsequent translation of the bolt. Further, the bolt-action mechanism 100 is able to simplify the motion required to cycle the firearm 10 and therefore increase the rate of fire.
Conclusion
[0046] As used herein, including in the claims, the phrases at least one of or one or more of a list of items refer to any combination of those items, including single members. For example, at least one of: A, B, or C covers the possibilities of: A only, B only, C only, a combination of A and B, a combination of A and C, a combination of B and C, and a combination of A, B, and C. Additionally, the terms comprise, comprises, comprising, include, includes, and including are intended to be non-limiting and open-ended. These terms specify essential elements or steps but do not exclude additional elements or steps, even when a claim or series of claims includes more than one of these terms.
[0047] While the present disclosure has been detailed and depicted through specific embodiments and examples, it is to be understood by those skilled in the art that numerous variations and modifications can perform equivalent functions or yield comparable results. Such alternative embodiments and variations, which may not be explicitly mentioned but achieve the objectives and adhere to the principles disclosed herein, fall within its spirit and scope. Accordingly, they are envisioned and encompassed by this disclosure, warranting protection under the claims associated herewith. That is, the present disclosure anticipates combinations and permutations of the described elements, operations, steps, methods, processes, algorithms, functions, techniques, modules, circuits, etc., in any manner conceivable, whether collectively, in subsets, or individually, further broadening the ambit of potential embodiments.
[0048] Although operations, steps, instructions, and the like are shown in the drawings in a particular order, this does not imply that they must be performed in that specific sequence or that all depicted operations are necessary to achieve desirable results. The drawings may schematically represent example processes as flowcharts or flow diagrams, but additional operations not depicted can be incorporated. For instance, extra operations can occur before, after, simultaneously with, or between any of the illustrated steps. In some cases, multitasking and parallel processing might be beneficial. Furthermore, the separation of system components described should not be interpreted as mandatory for all implementations, as the program components and systems can be integrated into a single software product or distributed across multiple software products.
[0049] As used throughout, the singular forms a, an, and the include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to a quantity of one of a particular element can comprise two or more such elements unless the context indicates otherwise. In addition, any of the elements described herein can be a first such element, a second such element, and so forth (e.g., a first widget and a second widget, even if only a widget is referenced).
[0050] Ranges can be expressed herein as from about one particular value and/or to about another particular value. When such a range is expressed, another aspect comprises from the one particular value and/or to the other particular value. Similarly, when values are expressed as approximations, by use of the antecedent about or substantially, it will be understood that the particular value forms another aspect. It will be further understood that the endpoints of each of the ranges are significant both in relation to the other endpoint and independently of the other endpoint.
[0051] For purposes of the current disclosure, a material property or dimension measuring about X or substantially X on a particular measurement scale measures within a range between X plus an industry-standard upper tolerance for the specified measurement and X minus an industry-standard lower tolerance for the specified measurement. Because tolerances can vary between different materials, processes, and between different models, the tolerance for a particular measurement of a particular component can fall within a range of tolerances.
[0052] As used herein, the terms optional or optionally mean that the subsequently described event or circumstance may or may not occur, and that the description comprises instances where said event or circumstance occurs and instances where it does not.