The disclosures made herein relate generally to handheld single shot firearms and, more particularly, to handheld single shot firearms having a pistol grip that is gripped by the palm of a hand and having a barrel with a centerline axis that extends through the palm of the hand.
It is well known that a firearm specifically configured for self-defense is useful and desirable in many situations and for many types of persons. In fact, a majority of states within the United States of America offer permits for concealed carry of firearms for personal defense. While conventional handheld firearms such as multi-round pistols (i.e., barrel over pistol grip configuration) can be carried in a concealed manner, there are many aspects of such conventional handheld multi-round firearms that are undesirable to some persons wanting a firearm strictly for defensive purposes. For example, for elder persons and/or those who are not overly familiar with firearms, examples of such undesirable aspects of conventional handheld multi-round firearms include but are not limited to the safety mechanism being cumbersome to operate especially in defensive situations, the safety and/or trigger operation being difficult for seniors, disabled or others who may have limited strength or manual dexterity, the use of the index finger for firing causing muzzle drift during firing, the overall appearance/ size of the firearm being undesirable, and the like.
Various types of handheld single shot firearms having a pistol grip that is gripped by the palm of a hand and having a barrel with a centerline axis that extends through the palm of the hand are known. In general, these handheld single shot firearms are specifically configured and/or intended for defensive purposes. These handheld single shot firearms are also generally more ‘user-friendly’ than conventional handheld multi-round firearms for persons and/or those who are not overly familiar with firearms or persons using them in an emergency and/or back-up situation. However, these known handheld single shot firearms each exhibit one or more shortcomings that limit their effectiveness. Examples of such shortcomings include, but are not limited to, using index finger to actuate trigger, non-existent or limited means for integral mounting of accessories, lacking interlock between breech access and firing function, lacking interlock between safety mechanism and the like.
Therefore, a handheld single shot firearm having a pistol grip that is gripped by the palm of a hand and having a barrel with a centerline axis that extends through the palm of the hand and that overcomes drawbacks associated with conventional handheld single shot firearms would be advantageous, desirable and useful.
Embodiments of the present invention provide for a single shot firearm having a stock (i.e., a pistol grip) that is gripped by the palm of a hand and having a barrel with a centerline axis that extends through the palm of the hand. More specifically, firearms configured in accordance with the present invention can be fired using either hand without regard to orientation of the stock in that the stock is both ambidextrously and bilaterally symmetrical about the barrel centerline axis. This configuration makes such firearms functionally independent of a user's hand dominance or bilateral orientation. Furthermore, firearms in accordance with the present invention are configured using the thumb instead of index finger for firing, thereby significantly reducing muzzle drift to provide more accurate targeting. Accordingly, such firearms are especially well suited for applications such as, for example, home defense, concealed carry, and/or as a backup gun. They are also ideally suited for seniors, disabled or others who may have limited strength or manual dexterity. Additionally, firearms configured in accordance with the present invention are suitable for use by persons with phalangeal amputations. Thus, a skilled person will appreciate that a firearm configured in accordance with the present invention advantageously overcomes one or more shortcomings associated with conventional handheld single shot firearms that are intended primarily for defensive purposes.
In one embodiment of the present invention, a firearm comprises a stock, a striker, a barrel, two safety release buttons, and two striker release triggers. The striker is moveably mounted within a cavity of the stock and is movable between a discharged position and a charged position. The barrel is attached to the stock and has a bore that defines a barrel bore centerline axis and that is configured for receiving therein a round of ammunition. Two safety release buttons are movably exposed at an exterior surface of the stock. The safety release buttons are diametrically opposed to each other with respect to the barrel bore centerline axis. Each one of the safety release buttons is independently movable from a respective at-rest position to a respective safety release position. The striker release triggers are movably exposed at the exterior surface of the stock and are diametrically opposed to each other with respect to the barrel bore centerline axis. The safety release buttons and the striker release triggers are diametrically aligned with a common axis. Each one of the striker release triggers is coupled to a respective one of the safety release buttons and to the striker in a manner whereby displacement of at least one of the striker release triggers from a respective at-rest position to a respective displaced position when the safety release buttons are each simultaneously in the respective safety release position allows the striker to be moved from the charged position toward the discharged position.
In another embodiment of the present invention, a firearm comprises a stock, receiver body, a striker, a barrel, two safety-release assemblies, and a striker release assembly. The receiver body is mounted on the stock. The striker is slideably mounted on the receiver body. The striker is slideable along a striker displacement axis between a charged position and a discharged position. The barrel is pivotably mounted on the receiver body. The barrel is pivotable about a barrel pivot axis extending substantially perpendicular to a barrel bore centerline axis and is pivotable about the barrel pivot axis between an open orientation with respect to the stock and a closed orientation with respect to the stock. The barrel bore centerline axis is axially aligned with the striker displacement axis when the barrel is in the closed orientation. The safety release assemblies are movable mounted on at least one of the receiver body and the stock. The safety release assemblies are independently operable from each other and each include a finger engaging member exposed at an exterior surface of the stock. The finger engaging members of the safety release assemblies are diametrically opposed to each other with respect to the striker displacement axis. The striker release assembly is movable mounted on at least one of the receiver body and the stock. The striker release assembly includes two finger engaging members each exposed at an exterior surface of the stock. The finger engaging members of the striker release assembly are diametrically opposed to each other with respect to the striker displacement axis. The finger engaging members of the striker release assembly and the finger engaging members of the safety release assemblies are diametrically aligned with a common axis. The striker release assembly is coupled between each one of the safety release assemblies and the striker. The striker release assembly allows the striker to be moved from the charged position to the discharged position when the safety release assemblies are each simultaneously in a respective safety release configuration and at least one of the finger engaging members of the striker release assembly is subsequently moved from a respective at-rest position to a respective displaced position.
In another embodiment of the present invention, a firearm comprises a stock, a receiver body, a firing mechanism, a barrel, a firing mechanism release assembly, and two independently operable safety release assemblies. The stock having an exterior contour that is generally symmetric with respect to opposing end portions thereof, a front edge portion thereof and at least a portion of opposing side surfaces thereof. The front edge portion extends between the opposing end portions and the opposing side surfaces. The receiver body is mounted within the stock. The firing mechanism is moveably mounted on at least one of the receiver body and the stock and is movable between a primer engaging configuration and a charged configuration. The barrel is pivotably mounted on the receiver body and is pivotable about the barrel pivot axis between an open orientation and a closed orientation. A centerline axis of a bore of the barrel is axially aligned with a firing pin of the firing mechanism when the barrel is in the closed orientation and the firing mechanism is in the primer engaging configuration. The barrel is pivotable about a barrel pivot axis extending substantially perpendicular to the barrel bore centerline axis. The barrel extends through the front edge portion of the stock. The firing mechanism release assembly is movable mounted on at least one of the receiver body and the stock, is coupled to the firing mechanism, and includes two finger engaging members each exposed at an exterior surface of the stock at a respective one of the opposing end portions. The finger engaging members of the firing mechanism release assembly are diametrically opposed to each other with respect to the barrel bore centerline axis. Movement of the firing mechanism release assembly from a respective at-rest configuration to a respective displaced configuration allows the firing mechanism to be moved from the charged configuration toward the primer engaging configuration. The safety release assemblies are movable mounted on at least one of the receiver body and the stock. Each one of the safety release assemblies include a finger engaging member exposed at the exterior surface of the stock at the front edge portion. The finger engaging member of the safety release assemblies are diametrically opposed to each other with respect to the barrel bore centerline axis. The finger engaging members of the firing mechanism release assembly and the finger engaging members of the safety release assemblies are diametrically aligned with a common axis. The safety release assemblies inhibit movement of the finger engaging members of the firing mechanism release assembly from the respective at-rest position to the respective displaced position until both of the safety release assemblies are moved from a respective at-rest configuration to a respective displaced configuration.
These and other objects, embodiments, advantages and/or distinctions of the present invention will become readily apparent upon further review of the following specification, associated drawings and appended claims.
Referring to
The stock 102 has an exterior contour that is generally symmetric with respect to a first end portion 106, a second end portion 108 (i.e., opposing end portions), a front edge portion 110, and at least a portion of a first side surface 112 and a second side surface 114 (i.e., opposing side surfaces). The front edge portion 110 extends between the opposing end portions 106, 108 and the opposing side surfaces 112, 114. A rear edge portion 115 is opposite the front edge portion 110. The barrel 104 extends through the front edge portion 110 of the stock 102 in a manner whereby the barrel centerline axis (BCA) approximately bisects the stock 102 with respect to a vertical reference axis VRA and lateral reference axis LRA, which both extend through the stock 102.
As shown in
Moving the barrel 104 from the closed orientation C to the open orientation O allows for various functionalities associated with firing the firearm 100. One such functionality is that moving the barrel 104 from the closed orientation C to the open orientation O allows a round of ammunition 120 (
Referring to
As shown in
The triggers 134, 136 are concealed under protective covers 142, 144. The protective covers 142, 144 are each biased to a respective at-rest position PCP1 and are movable between the respective at-rest position PCP1 and a respective open position PCP2 (
The triggers 138, 140 are coupled to a firing mechanism of the firearm in a manner whereby depressing either of the triggers 138, 140 (i.e., moving inwardly with respect to the stock 102) allows the firing mechanism mounted on the receiver body 118 to be moved from the charged configuration toward the primer engaging configuration. Such movement causes a round of ammunition within the chamber of the barrel 104 to be discharged. The safety release buttons 134, 136 are coupled to the triggers 138, 140 in a manner whereby movement of either one of the triggers 138, 140 is inhibited until the both safety release buttons 134, 136 are depressed (i.e., moved inwardly with respect to the stock 102) and held in such depressed orientation. Thus, once both safety release buttons 134, 136 are depressed and simultaneously held in such depressed configuration, movement of depressing either one of the triggers 138, 140 allows the firing mechanism to be moved from the charged configuration toward the primer engaging configuration. Such interoperability of the safety release buttons 134, 136 and the triggers 138, 140 is one embodiment of a safety mechanism configured in accordance with the present invention.
It can be seen that a thumb is used for depressing one of the triggers 138, 140 to fire the firearm 100. This is advantageous in that a firearm configured in accordance with the present invention can be fired by persons with phalangeal amputations. Furthermore, a thumb actuated trigger arrangement is also ideally suited for seniors, disabled or others, who may have limited strength and/or manual dexterity. Furthermore, a principal factor of inaccurate fire is lateral muzzle drift induced during trigger squeeze. The joint configuration of the stock 102, the barrel 104 and the triggers 138, 140 result in a firearm configuration where a thumb is used for releasing the firing mechanism, which significantly reduces lateral muzzle drift induced during trigger squeeze.
An additional advantage of the configuration of the stock 102 and the barrel 104 is its low bore axis. Recoil forces are directed rearward, coincident with the barrel centreline axis BCA of the firearm 100. This arrangement reduces muzzle rise that occurs in firearms having a bore axis that is above the centerline of the firearm 100. The arrangement of a firearm in accordance with the present invention has dynamics similar to a rifle where the recoil force is directed rearward to the shoulder but in this instance, the palm is simply substituted for the shoulder.
The bisecting position of the barrel 104 with respect to the stock 102 provides for proprioceptive determination (i.e., hand-eye coordination) of barrel elevation, which largely mitigates the need for iron sights. Accordingly, in preferred embodiments, the firearm 100 does not include mechanical sights (e.g., iron sights). However, as shown herein, the firearm 100 can be configured for having mounted thereon (e.g., on the barrel 104) a laser sighting device 149 (e.g., a LaserLyte brand subcompact model V2 laser sight, or similar). To this end, the barrel 104 can include an accessory mount 147 and/or have a tip portion thereof configured with helical threads, splines or the like. It is also disclosed herein that the accessory mount 147 can be configured to serve as a hand guard that prevents an operator's hand from protruding beyond the barrel 104.
Referring now to
Still referring to
A striker release assembly 176 is movable mounted jointly on the receiver body 118 and the stock 102. The striker release assembly 176 includes a striker sear 178, a first sear linkage 180, a second sear linkage 182 and the triggers 138, 140. The striker sear 178 is pivotably coupled at a central portion thereof to the receiver body 118. The first sear linkage 180 is engaged at a first end portion thereof with a first end portion of the striker sear 178 and is engaged at a second end portion thereof with the first trigger 138. The second sear linkage 182 is engaged at a first end portion thereof with a second end portion of the striker sear 178 and is engaged at a second end portion thereof with the second trigger 140. In this manner, depressing either one of the triggers 138, 140 from a respective at-rest position TP1 (
Accordingly, it can be seen that the striker sear 178 holds the striker 150 in the charged position SP1 when the striker 150 is in the charged position SP1 and the striker sear 178 is in the striker holding position SS1. Displacement of either one of the triggers 138, 140 from the respective at-rest position TP1 to the respective displaced position TP2 causes the striker sear 178 to move from the striker holding position SSP1 to the striker release position SSP2, thereby allowing the striker spring 152 to forcibly urge the striker 150 from the charged position SP2 toward the discharged position SP1. In conjunction with achieving the discharged position SP1, a firing pin 153 of the striker 150 engages a primer of a round of ammunition disposed within the barrel 104. As discussed above, both safety release assemblies 160, 162 must be in the respective displaced configuration RAC2 for either of the triggers 138, 140 to be movable from the respective at-rest position TP1 to the respective displaced position TP2. As can be see in
Functionality that a charging arm assembly can provide with respect to a firing mechanism is well known in the art. However, with respect to embodiments of the present invention, operability of the charging arm assembly 124 is distinct and advantageous based upon its reliance on the pivoting action of the barrel 104. Accordingly, presented herein is a description of the manner in which the charging arm assembly 124 serves to move the striker 150 from its discharged position SP1 toward its charged position SP2.
Referring to
Movement of the barrel 104 from the open orientation O toward the closed orientation C causes the charging arm engaging surface 122 of the barrel 104 to engage the charging arm 184 and displace the charging arm 184 from its extended position CAP1 toward its displaced position CAP2. During a first portion of the displacement of the charging arm 184 toward its displaced position CAP2, the charging arm disconnect 186 engages the disconnect lug 198 of the striker 150. Continued displacement of the charging arm 184 toward its displaced position CAP2 (i.e., through continued movement of the barrel 104 from its open orientation O toward its closed orientation C) results in the striker 150 moving past its charged position SP1. Such movement past the charged position SP1 allows the striker sear 178 to be biased to its striker securing position SSP1 by the torsion spring 183 (
It is desirable and advantageous for the firearm 100 to include one or more ancillary safety mechanisms besides the safety release assemblies 160, 162 for precluding unintentional and/or unauthorized discharge thereof. Precluding an unauthorized person from firing the firearm 100 is one such situation where it is desirable and advantageous for the firearm 100 to include one or more ancillary safety mechanisms to address this potential situation. Precluding the unintentional discharge of the firearm 100 when the barrel 104 is being moved from its open orientation O toward its closed orientation C is another such situation where it is desirable and advantageous for the firearm 100 to include one or more ancillary safety mechanisms to address this potential situation. Precluding the unintentional discharge of the firearm 100 in the event that the striker sear 178 does not properly engage the striker 150 after the striker 150 has been moved to its charged position SP2 is yet another such situation where it is desirable and advantageous for the firearm 100 to include one or more ancillary safety mechanisms to address this potential situation. Precluding the unintentional discharge of the firearm 100 in the event that the striker sear 178 releases from the striker 150 without the striker release assembly being displaced for causing such release of the striker sear 178 is yet another such situation where it is desirable and advantageous for the firearm 100 to include one or more ancillary safety mechanisms to address this potential situation.
As shown in
As shown in
Besides accidental firing of the weapon via accidental depression of the triggers, which is at least partially addressed by the safety assemblies 160, 162 and the triggers protective covers 142, 144, an adverse situation can arise if the charging arm disconnect 186 fails or the striker sear 178 does not reset to engage the striker 150 upon closing of the barrel 104. In short, the concern is, what if the striker 150 is charged about 90% of the way and the striker 150 is inadvertently released due to a failed charging arm disconnect 186 or the lack of the striker sear 178 properly moving to the striker holding position SSP1. The first safety feature of the firearm 100 to prevent this type of failure is the fact that the striker 150 is configured to not be engagable with a chambered round's primer until the barrel 104 is nearly 100% closed. This aspect covers a good portion of the concern. However, preferably, the firearm 100 will include a safety feature to preclude the potential for the striker 150 to accidentally fire right when the barrel 104 is achieving its closed orientation C in the case where the trigger sear 178 or charging arm disconnect 186 fails or malfunctions.
Referring to
Referring to
In the preceding detailed description, reference has been made to the accompanying drawings that form a part hereof, and in which are shown by way of illustration specific embodiments in which the present invention may be practiced. These embodiments, and certain variants thereof, have been described in sufficient detail to enable those skilled in the art to practice embodiments of the present invention. It is to be understood that other suitable embodiments may be utilized and that logical, mechanical, chemical and electrical changes may be made without departing from the spirit or scope of such inventive disclosures. To avoid unnecessary detail, the description omits certain information known to those skilled in the art. The preceding detailed description is, therefore, not intended to be limited to the specific forms set forth herein, but on the contrary, it is intended to cover such alternatives, modifications, and equivalents, as can be reasonably included within the spirit and scope of the appended claims.
This patent application claims priority from co-pending U.S. Provisional Patent Application having Ser. No. 61/134,060, filed Jul. 7, 2008 entitled “Palm Pistol”, having a common applicant herewith and being incorporated herein in its entirety by reference.
Number | Date | Country | |
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61134060 | Jul 2008 | US |