This invention relates generally to the field of firearms and more specifically to safety mechanisms associated with firearm triggers.
Conventional firearms are equipped with safety detents to prevent the firearm from being fired accidentally. The safety detent is generally a lever that must be moved from the “safe” position to the “fire” position before the trigger can be depressed to fire the weapon. However, safety detents may not provide the best safety protection in the case of either weapons that require use of both hands, or combination weapons, such as a secondary weapon mounted under a primary weapon.
In the case of a secondary weapon (e.g., a shotgun) mounted underneath a primary weapon (e.g., a rifle), the resulting conventional combination firearm has two barrels of different lengths. The barrel of the secondary weapon extends further forward than the barrel of the primary weapon mounted on top. When using the combination weapon as a battering ram (i.e., to break down a door in law enforcement), the user runs the risk of inadvertently placing his hand over the barrel of the secondary weapon. With a conventional safety detent left in the “fire” position, this can pose a risk of injury due to inadvertent firing.
In addition, in a conventional combination firearm, both hands are generally used to fire and support the weapon. The normal trigger finger is positioned on the trigger of the primary weapon (e.g., rifle) toward the rear of the combination firearm. The other hand is used in a forward position to support the combination firearm. However, in a conventional combination firearm, the safety mechanisms and the triggers for both weapons are located near the rear of the stationary receiver which is generally connected to the rifle stock. With the safety mechanism and the trigger for the secondary weapon in this location, the user would likely have to move his forward support hand to the rear of the combination weapon in order to disengage the safety and fire the weapon. Moving the support hand can compromise stability of the weapon, delay firing and create potential hazards when the hands are moved or repositioned on the combination weapon.
As a result of these inefficiencies and safety risks, there developed a need for a firearm trigger safety assembly that would permit the safety mechanism for the secondary weapon to be disengaged and the weapon to be fired without requiring the user to move either one of his hands.
In one embodiment of the invention, a safety assembly for a firearm comprises at least one control member extending to the exterior of the firearm; a bias element operatively associated with the control member, the bias element biasing the control member in a first position; and an unlocking mechanism, the unlocking mechanism being connected to the control and interlinked with a trigger to unlock the trigger when the control member is in a second position.
In other embodiments, the control member may comprise a button and the bias element may comprise a spring.
In still other embodiments, the unlocking mechanism may comprise an aperture in a trigger rod, the trigger rod being connected to the trigger. This embodiment may further comprise a cross-bar disposed between the control member and the unlocking mechanism, the cross-bar being shaped to allow the cross-bar to pass through the aperture for movement of the trigger rod when the control member is in the second position.
In another embodiment, the aperture may comprise a slot and the cross-bar may comprise at least one notch, the notch being disposed to slide into the slot when the control member is in the second position, thereby allowing the trigger rod to move.
In yet another embodiment, the bias element may comprise a spring ring. This embodiment may also comprise a first groove in the forestock, the first groove being disposed to receive the spring ring and hold it in the first locked position, and a second groove in the forestock, the second groove being disposed to receive the spring ring and hold it in the second unlocked position.
In an embodiment for a combination weapon, the safety assembly of the present invention may comprise a detent extending to the exterior of a receiver of a primary weapon, the detent being operatively associated with a trigger on the primary weapon to lock and unlock the trigger on the primary weapon; a control member extending to the exterior of a forestock of a secondary weapon, the secondary weapon being mounted underneath the primary weapon, the control member being moveable between a first position and a second position; a bias element operatively associated with the control member, the bias element biasing the control member in a first position; an unlocking mechanism connected to the control member, the unlocking mechanism being interlinked with a trigger on the secondary weapon to unlock the trigger on the secondary weapon when the control member is in a second position; and a locking mechanism connected to the control member, the locking mechanism being interlinked with the trigger of the secondary weapon to lock the trigger of the secondary weapon when the control member is at rest in the first position and to relock the trigger of the secondary weapon when the control is reset to the first position from the second position.
An embodiment of a method for locking and unlocking a trigger on a combination weapon according to the present invention comprises placing a support hand on the forestock of a secondary weapon, the secondary weapon being mounted underneath a primary weapon; moving a safety detent on the primary weapon to an unlocked position; placing a firing hand on a trigger of the primary weapon; using the support hand to operate a control member on the forestock of the secondary weapon to unlock a trigger of the secondary weapon, the control member being operatively associated with the trigger of the secondary weapon; and using the support hand to operate the trigger of the secondary weapon while the control member keeps the trigger unlocked.
In another embodiment of the method, the control may comprise a button that the user depresses to unlock the trigger. The method may further comprise releasing the button and releasing the trigger, causing the button to relock the trigger of the secondary weapon.
In yet another embodiment of according to the present invention, a method for locking and unlocking a trigger on a combination weapon may comprise placing a support hand on a forestock of a secondary weapon, the secondary weapon being mounted underneath a primary weapon; moving a safety detent on the primary weapon to an unlocked position; placing a firing hand on a trigger of the primary weapon; using the support hand to depress a button on the forestock of the secondary weapon to unlock a trigger of the secondary weapon, the button being connected to at least one bias element and operatively associated with the trigger of the secondary weapon so that the button is retained in a depressed position; and using the support hand to operate the trigger of the secondary weapon.
Another embodiment of a method may further comprise operating the trigger of the primary weapon after the safety detent has been moved to the unlocked position.
Another embodiment of a method for locking and unlocking a trigger of a firearm may comprise placing at least one hand on a forestock of a firearm; placing at least one digit on the trigger; using the hand to depress a button extending to the forestock to unlock the trigger, the button being operatively associated with the trigger and being connected to at least one bias element that biases the button in at least a locked position; and while the button is depressed, squeezing the trigger.
Still another embodiment of a method herein may further comprise releasing the trigger, thereby causing the button to be reset in the locked position.
Illustrative and presently preferred exemplary embodiments of the present invention are illustrated in the drawings, in which:
The present invention is directed to a novel safety assembly 42 for a firearm 10 used as a single weapon and for a combination weapon 200 comprising a secondary weapon 203 (e.g., a shotgun) integrated with a primary weapon 201 (e.g., a rifle). The embodiments of firearm 10, long gun 202 and combination weapon 200 described herein may require the use of both hands for operation. Broadly described, the embodiments of the safety assembly 42 described herein comprise a control 43 extending to the exterior of forearm or forestock 17, a bias element 46 that biases the control 43 in a “safe” or locked position and, an unlocking mechanism that is connected to the control 43 and interlinked with a trigger mechanism 32 of the firearm 10 to unlock the trigger mechanism 32 when control 43 is moved to a “fire” or unlocked position. As used herein, control 43 may comprise any type of control capable of being linked to unlocking mechanism, including but not limited to a button, a lever, a detent, a toggle, or a knob. The bias element 46 may comprise any type of bias element capable of biasing the control 43 in at least one position, including but not limited to a spring, a coil, a spring ring, or any other elastic device that will regain its original position after removal of stress, compression or the like. As used herein, the term “forward” means in a position toward barrel 16 or muzzle 16e of the firearm 10, combination weapon 200 or long gun 202. “Rear” as used herein means in a position toward receiver 18 or magazine 20 of the firearm 10, or toward receiver 18 or buttstock 25 of combination weapon 200 or long gun 202.
With reference to the Figures,
As shown in
One embodiment of the present invention for safety assembly 42 for firearm 10 is shown in
The safety assembly 42 as illustrated in
An exemplary embodiment showing the location of safety assembly 42 on combination weapon 200 is illustrated in
An embodiment for operating combination weapon 200 (as illustrated in
Thus, the embodiments of safety assembly 42 according to the present invention allow the user to fire any of long gun 202, firearm 10, or secondary weapon 203 or primary weapon 201 of combination weapon 200 without having to reposition either of his hands to do so. In the case of combination weapon 200, the user may use both hands to simultaneously fire primary weapon 201 and secondary weapon 203 without having to reposition either hand.
In the embodiment shown in FIGS. 12-14A-E, trigger actuating rod 36 comprises a slot 47 (for unlocking trigger mechanism 32) and an opening 48 (for locking trigger mechanism 32). In the embodiment shown, slot 47 and opening 48 are adjacent to one another forming a key-hole shaped aperture in trigger rod 36. In the embodiment shown, slot 47 is disposed in both size and location to accept notch 45b, 45c, but not barrier 45a, when either control 43 is depressed. Opening 48 is disposed in both size and location to accept barrier 45a when control 43 is biased by bias element 46 into its resting (e.g., locked) position. Trigger actuating rod 36 may have a flattened portion or surface 46a surrounding opening 48 and slot 47 to provide a support surface for bias element 46 to prevent it from fouling. As shown in the illustrated embodiment, bias element 46 may be a spring.
For the embodiment shown, FIGS. 12-14A-E illustrate the relationship between the elements comprising safety assembly 42.
As shown in
As shown in FIGS. 12-14A-14E, cross-bar 44 is biased about trigger actuating rod 36 by a plurality of bias elements 46 (e.g., springs) generally between barrier 45a and control 43. The plurality of bias elements 46 bias the cross-bar 44 in the resting (locked) position wherein the barrier 45a is aligned with opening 48. In order to unlock trigger actuating rod 36 and trigger mechanism 32, the user would have to depress and hold down either one of the controls 43 so that notch 45b, 45c moves into slot 47, thereby unlocking trigger actuating rod 36 so firearm 10, long gun 202 or secondary weapon 203 can be fired.
An advantage of the embodiment of safety assembly 42 as previously discussed is that it allows the user to operate the control 43 without having to move his hand (preferably, the support hand). Thus, by moving any digit, the user can depress and hold control 43 and then press trigger button 34 at the same time, as illustrated in
Nonetheless, as would be apparent to those of skill in the art after becoming familiar with the embodiments of this invention, other mechanisms may be employed to permit the safety assembly 42 to remain unlocked after control 43 was only depressed one time (i.e., depress once and it stays depressed). Such a mechanism could also be coupled with a reset mechanism such that control 43 would stay depressed and the trigger mechanism 32 would remain unlocked until control 43 were subsequently depressed in the manner of a reset button.
An embodiment of a safety assembly 401 for temporarily locking or unlocking the trigger mechanism 32 is shown in
A method for using the safety assembly 401 illustrated in
The foregoing description has been presented to illustrate and describe various embodiments of the present invention, including preferred embodiments. Therefore, it is not intended to limit the invention in any way to the precise forms and methods disclosed. Having herein set forth preferred embodiments of the present invention, it is anticipated that suitable modifications can be made thereto which will nonetheless remain within the scope of the invention. The invention shall therefore be construed in accordance with the following claims:
This is a continuation of co-pending U.S. patent application Ser. No. 10/939,016, filed Sep. 9, 2004, which is incorporated herein by reference for all that it discloses.
The United States Government has certain rights in this invention pursuant to Contract No. DE-AC07-99ID13727, and Contract No. DE-AC07-05ID14517 between the United States Department of Energy and Battelle Energy Alliance, LLC.
Number | Date | Country | |
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Parent | 10939016 | Sep 2004 | US |
Child | 11460274 | Jul 2006 | US |