WO2016060774A2 - Arme à feu semi-automatique compacte modulaire - Google Patents

Arme à feu semi-automatique compacte modulaire Download PDF

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Publication number
WO2016060774A2
WO2016060774A2 PCT/US2015/050240 US2015050240W WO2016060774A2 WO 2016060774 A2 WO2016060774 A2 WO 2016060774A2 US 2015050240 W US2015050240 W US 2015050240W WO 2016060774 A2 WO2016060774 A2 WO 2016060774A2
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WO
WIPO (PCT)
Prior art keywords
assembly
barrel
frame
trigger
pair
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.)
Ceased
Application number
PCT/US2015/050240
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English (en)
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WO2016060774A3 (fr
Inventor
Charles K. Heizer
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Individual
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Individual
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Filing date
Publication date
Priority claimed from US14/486,633 external-priority patent/US9777980B2/en
Application filed by Individual filed Critical Individual
Priority to US15/510,978 priority Critical patent/US20170268843A1/en
Publication of WO2016060774A2 publication Critical patent/WO2016060774A2/fr
Publication of WO2016060774A3 publication Critical patent/WO2016060774A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41C—SMALLARMS, e.g. PISTOLS, RIFLES; ACCESSORIES THEREFOR
    • F41C3/00—Pistols, e.g. revolvers
    • 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
    • F41A17/00—Safety arrangements, e.g. safeties
    • F41A17/74—Hammer safeties, i.e. means for preventing the hammer from hitting the cartridge or the firing pin
    • 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
    • F41A19/00—Firing or trigger mechanisms; Cocking mechanisms
    • F41A19/06—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms
    • F41A19/42—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having at least one hammer
    • F41A19/43—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having at least one hammer in bolt-action guns
    • F41A19/44—Sear arrangements therefor

Definitions

  • the present invention relates to a semi-automatic pistol, and more particularly to modular compact semi-automatic pistols with quick-change barrels and corresponding inserts for different caliber barrels, an improved recoil mechanism having a shock absorbing system with a spring and dampener assembly that is held in place and stopped by a housing formed above the barrel, and a firing system with a trigger assembly and safety device having reduced complexity.
  • Known firearms generally experience kickback and muzzle climb due to discharge gases when the firearm is fired. Kickback is created by a forward momentum of the bullet and results in a rearward acting force upon the firearm and the marksman. Additionally, muzzle climb is caused by a torque which creates an upward movement of the barrel when the firearm is discharged. Recoil and muzzle climb typically increase with the size of the bullet or projectile. Moreover, there is typically an inverse relationship between the weight of the firearm and the kickback effects such that a lower weight firearm produces an increased kickback and muzzle climb transferred to the operator of the firearm. Kickback and muzzle climb may cause marksmen to flinch or hesitate when discharging the firearm, thereby resulting in less control of the firearm.
  • muzzle climb and recoil may lead to fatigue in the marksman and may inhibit the marksman's ability to repeatedly discharge the firearm.
  • Kickback and muzzle climb can cause the marksman to move out of alignment with the target after each round is fired requiring additional setup time for each subsequent shot. As such, kickback and muzzle climb can decrease the accuracy of the marksman.
  • Embodiments of the present invention comprise a firearm with a frame, a barrel assembly, a slide assembly with a recoil mechanism, and a firing system with a trigger assembly and safety device.
  • the slide assembly and recoil mechanism are located above the barrel assembly so that the barrel is situated between the topmost part of the frame and the bottom of the slide assembly.
  • the barrel assembly includes a housing situated above the firing chamber which is covered by the slide assembly and secures the side of the recoil assembly proximate to the breech plate.
  • the firearm of the present invention is also designed to have modular barrel assemblies that are interchangeable with each other so that different caliber gun barrels can use the same frame, firing system, recoil mechanism and possibly even the same slide assembly.
  • the modular barrel assemblies are connected to the frame with takedown pins which permit quick removal and replacement without any tools apart from the cartridges used in the firearm.
  • the removable connection of the barrel assembly to the frame are preferably through front and rear mounts that may be secured using the removable takedown pins.
  • the firing system has a trigger assembly that is compact and lightweight and that can operate with different caliber barrels.
  • the trigger assembly includes a lever arm extending between the trigger pull and the sear; the lever arm has a ram that engages a tab on the sear and an extension that engages a cam surface on the hammer.
  • the safety device for the trigger assembly reduces the complexity of the parts from traditional safeties, using a rotating shaft which engages the sear and forces the sear into its engaged position with the hammer catch surface in a safety-on configuration; a cutout section of the shaft allows the sear to rotate away from the hammer catch surface in the firing-ready configuration.
  • Figure 1A is a cross-sectional view of a firearm of the present invention.
  • Figure IB is a partial cross-sectional view of the firearm of the present invention.
  • Figure 1C is a front view of the firearm of the present invention.
  • Figure ID is a cross-sectional view of the firearm of the present invention with a variation in the sear design.
  • Figure 2A is an exploded cross-sectional view of the firearm shown in Figure 1A.
  • Figure 2B is a front view of the frame of the firearm shown in Figure 2A.
  • Figure 2C is a front view of an interchangeable barrel assembly and breech plate insert for the firearm.
  • Figure 3A is an exploded isometric view of the firearm of the present invention.
  • Figure 3B is a detail isometric view of an alternative mount for barrel assemblies.
  • Figure 3C is an isometric view of the firing system with the trigger assembly and the linear striker mechanism.
  • Figure 3D is an isometric view of an alternative firing system.
  • Figures 4A-4H are a progression of views as the firearm discharges, cocks, and returns to its firing-ready position.
  • Figures 5A and 5B are cross-sectional detail views of the safety device in an engaged position and a disengaged position, respectively.
  • Figure 5C is an isometric view of the safety device shown in Figures 5A and 5B.
  • Figures 6A and 6B are cross-sectional detail views of an alternative safety device in an engaged position and a disengaged position, respectively.
  • the firearm 10 of the present invention includes a frame 12, a barrel assembly 14, a slide assembly 16 that contains a recoil mechanism 18, and a firing system 20.
  • the slide assembly and recoil mechanism are located above the gun barrel 14a so that the barrel is situated between the topmost part of the frame and the bottom of the slide assembly.
  • the barrel assembly 14 includes a housing 14b which is covered by the slide assembly 16 and secures one side of the recoil assembly 18.
  • the firearm is operated by the firing system 20 which includes a trigger assembly 22 and linear striker mechanism 24.
  • the barrel assembly can be removably connected to the frame through front and rear mounts 14c, 14d that may be secured using removable pins 26.
  • the barrel assembly can modularly connect with the frame and slide assembly so that different caliber barrels 14', 14" can be interchanged with each other using the same frame and slide assembly.
  • an insert 50 preferably mounts within a fitting 52 in the slide. It will also be appreciated that each different caliber barrel may have its own uniquely sized slide assembly to avoid the use of inserts. Additionally, it is also possible to form the barrel assembly with the frame so that they are permanently attached to each other.
  • the frame 12 has a handle portion 12a and a trigger portion 12b.
  • the handle portion has a left side and a right side extending from the trigger portion to a butt end 12c of the frame.
  • the sides each have a side aperture 32a proximate to the trigger portion and a lip 12d that is proximate to the top end of the handle portion and extends along the top end to the butt end of the handle portion.
  • the trigger portion has an arm 12e extending from the handle portion and a cavity 34 recessed from a top face of the arm 12f.
  • a pair of sides of the arm extends from the sides of the handle portion to form a pair of side walls on opposite sides of the cavity, and each of the side walls has a side wall aperture 36a.
  • the barrel assembly 14 is positioned adjacent to the top face of the arm.
  • the barrel assembly includes a gun barrel 14a, a housing 14b, a front mount 14c, and a rear mount 14d and has a front portion 14e, a rear portion 14f, a top side 14g, and a bottom side 14h.
  • the front and back mounts extend from the bottom side of the front and back portions, respectively.
  • the housing 14b extends from the top side of the gun barrel and has inner and outer surfaces 38a, 38b and front and back surfaces 40a, 40b.
  • the top side includes a pair of longitudinal ribs 42 extending between the front portion and the rear portion.
  • the front mount is seated in the cavity and has a front aperture 36b aligned with the side wall aperture 36a in each of the side walls.
  • the rear mount is seated between the first side and the second side and has a rear aperture 32b aligned with the side apertures 32a.
  • the mounts are preferably pinned.
  • a latch mount 28 may be used in place of either one of the pin mounts. The latch mount would engage with a catch 30 on the frame and then the pin mount would be locked in place, preferably with a takedown pin.
  • the takedown pin locks the barrel assembly to the frame and can be dislodged from the pin aperture using a standard caliber cartridge 44. The user can then pull the pin out of the aperture to remove the barrel assembly 14 from the frame 12.
  • the barrel assembly 14 can interchangeably connect with the frame 12 and the slide assembly 16 in a modular manner.
  • one barrel assembly 14' can be one caliber (.45) while another barrel assembly 14" can be a different caliber (9 mm), as shown in Figures 2B and 2C, respectively.
  • These barrel assemblies 14 are interchangeable with each other, and the centerline 46 of each gun barrel aligns with the firing pin hole 16g in the breech plate 16b.
  • different breech plate inserts 50 may have the same outer size 50a to mount within the fitting 52 in the slide assembly and different sized interior spacing 50b' , 50b" to accommodate different caliber ammunition.
  • a thin-walled insert 50b' may be used to hold 45 caliber ammunition in alignment with the firing pin hole 16g while a thick- walled insert 50b" corresponds with 9 mm ammunition.
  • the centerline 46 of the gun barrels are aligned with the center of the firing pin hole in the breech plate.
  • a takedown pin 26a extends through the aperture in the front mount and the side wall aperture in each one of the side walls.
  • a takedown pin 26b extends through the aperture in the rear mount and the side apertures in the frame.
  • the slide assembly 16 includes a front casing 16a, a rear casing 16b, a breech plate 16c, a firing pin bore 16d, an internal recess 16e, and a conduit 16f between the internal recess and the rear casing.
  • the breech plate has a firing pin hole 16g aligned with the firing pin bore 16d.
  • the front casing extends from the internal recess to a distal end around the nose portion of the recoil rod. The front casing mates with the barrel and encloses the recoil assembly in an interior space between the front casing and the top side of the barrel.
  • the front casing has a pair of apertures 48 at the distal end and a pair of inwardly-facing grooves 16g extending from the distal end to a location proximate to the internal recess.
  • the pair of longitudinal ribs slide in the pair of inwardly-facing grooves.
  • the rear casing has a pair of outwardly-facing grooves 16h, and the first lip and the second lip slide in the pair of outwardly- facing grooves.
  • the back surface of the housing abuts the internal recess and the recoil assembly sleeve continues through the housing and is seated at the back wall of the internal recess.
  • the recoil assembly 18 includes a rod 18a, a helical spring 18b and a sleeve 18c.
  • the recoil rod 18a has a nose portion 18d and an elongated rod 18e extending from the nose portion.
  • the nose portion has a bore 18f.
  • the sleeve 18c has a flange 18g around an open end at the front and an annular rib 18h at an opening at the back end.
  • the elongated rod extends through an interior portion 18i of the sleeve and projects out the opening at the back end.
  • the helical spring 18b surrounds the elongated rod 18a and is contained between the nose portion and the annular rib.
  • the recoil assembly also preferably includes a dampener device 18k which softens the impact of the slide as it is forced back following a discharged of a round.
  • a dampener device 18k which softens the impact of the slide as it is forced back following a discharged of a round.
  • a series of Belleville washers in a back-to-back arrangement can be situated around the rod between the spring and the nose portion so that when the slide reaches its backmost travel, the washers are compressed between the nose portion and the sleeve's flange at a slide stop formed by the housing' s front surface 40a.
  • the recoil assembly 18 is preferably connected to the slide assembly by another takedown pin 26c.
  • the pin extends through the pair of apertures in the front casing of the slide assembly and through the bore in the nose portion of the recoil assembly. It will be appreciated that any standard fastener can be used to connect the recoil assembly to the slide assembly.
  • the firing system 20 includes a trigger assembly 22 and a linear striker mechanism 24 as particularly illustrated in Figures 3C and 3D.
  • the linear striker mechanism includes the firing pin 24a and the firing pin spring 24b which are seated in the firing pin bore 16d in the slide assembly 16.
  • the linear striker mechanism may also include a bushing 54 as shown in Figures 2A and 3D and a tab 56 with a slot 58 to maintain the firing pin in its proper position in the firing pin bore.
  • Different caliber rounds may have differently sized firing pins 24a, 24a' and the firing pin springs 24b, 24b' as shown in Figures 3C and 3D.
  • the trigger assembly 22 as shown in Figures 3C and 3D have many of the same components, including a hammer 22a, a sear 22b, a lever arm 22c, and a trigger pull 22d.
  • the lever arm 22c extends from the trigger pull to its engagement with the sear and the hammer.
  • the trigger assembly 22 also includes a safety mechanism 60 and several springs which are described below relative to the components of the trigger assembly that the springs bias in various positions and orientations.
  • One trigger assembly with a preferred safety mechanism 60 is shown in Figure 3C
  • another trigger assembly with an alternative safety mechanism 60' is shown in Figure 3D. Both versions of the trigger assembly use the same hammer design and also use a very similar sear design.
  • the lever arm has some of the same features in both versions of the trigger assembly, but the lever arm used for the alternative safety mechanism 60' has additional parts that are not in the preferred safety mechanism 60.
  • the hammer 22a is pivotally mounted to the frame so that it rotates between its cocked orientation and its discharge orientation.
  • the hammer has a catch surface 62a and a cam surface 62b which interact with the sear and lever arm as described in detail below and has a striking surface 62c that impacts the backside 24c of the striker mechanism 24.
  • the sear engages the hammer's catch surface to hold the hammer in its cocked position
  • the hammer's cam surface engages the lever arm to disengage it from the sear when the hammer rotates from its cocked orientation to its discharge orientation.
  • Both the preferred safety mechanism 60 and the alternative safety mechanism 60' have a safety toggle switch 60a that is located in a recess 12g in the exterior of the frame 12.
  • the switch connects to a shaft 60b that extends through and is rotatable in a pair of holes 54 in the frame.
  • the safety mechanism is ambidextrous, having a safety switch on each end of the shaft.
  • the switch may have a detent, such as a nub 60a' on its inner surface, which engages with a depression 12h in the recess to hold the switch in the safety-on position.
  • a user must push the switch past the detent to rotate the switch and shaft into the safety-off position.
  • a solid portion 60c of the shaft engages the sear and forces the sear into its engaged position with the hammer catch surface for the safety-on configuration.
  • a cutout section 60d of the shaft allows the sear to rotate away from the hammer catch surface for the safety-off, firing-ready configuration.
  • the particular shape of the shaft in the region of the sear could be an oblong or other irregular shape that matches with a corresponding mating surface on the sear so that the shaft surface generally serves as a cam with an engaged (safety-on) position and a disengaged (safety-off) position relative to the sear.
  • the shaft 60b has a cam surface 60' c that engages the lever arm 22c to force it into a safety-on configuration with the sear, the cam surface disengages from the lever arm to allow it to move into a safety-off configuration with the sear.
  • the sear 22b engages the hammer 22a with a latching position that holds the hammer in its cocked orientation.
  • the sear has a latch 64a which engages the catch surface when the sear is in its latching position and the hammer is in its cocked position.
  • the lever arm is actuated so that it pushes the sear to its releasing position which is where the latch falls away from the catch surface.
  • a trigger spring 66 biases the trigger in the rest position, and the sear's latch is biased toward the catch by a sear spring 68 (see also Figure ID).
  • the sear preferably includes a tab 64b which extends from the sear's side and is acted on by the lever arm; the sear spring biases the tab toward the lever arm.
  • the sear also preferably includes a notch 64c which is positioned on the back side of the sear on the opposite side from the latch 64a and adjacent to the shaft' s cutout section 60d when the safety switch is rotated into the safety-off position. The alignment of the notch in the sear with the cutout section allows the sear to rotate from its latching position back to its releasing position.
  • the trigger assembly with the alternative safety mechanism has a sear 22b component with slightly different features.
  • the search also has the latch 64a and the tab 64b.
  • the sear instead of a notch on the back of the sear as in the embodiment shown in Figure 3C, the sear has a safety catch 64d that extends from the same side of the sear as the tab 64b to interact with the lever arm 22c when the safety is on.
  • the lever arm 22c interacts with and directly contacts the trigger 22d, the sear 22b, and the hammer 22a.
  • the lever arm is rotatably connected to the trigger through a pivot pin 82 and has a ram 72a and an extension 72b through which the lever arm engages the other components of the trigger assembly.
  • the ram engages the tab and the ram uses the tab to push the sear back so that the latch is pushed away from the hammer catch.
  • the lever arm is biased up toward the hammer by the lever arm spring 74 so that the extension contacts the hammer's cam surface.
  • the hammer's cam surface engages the extension and forces the lever arm down as the hammer rotates from its cocked orientation to its discharge orientation, and this also causes the ram to disengage from the sear's tab.
  • the cam surface rotates back with the hammer and allows the lever spring arm to bias the lever arm up back toward the tab on the sear.
  • an interference between the tab and the ram prevents the tab and ram from reengaging while the trigger remains depressed, even when the hammer is latched and the slide returns to chamber another round.
  • the trigger spring biases the trigger and lever arm forward which brings the ram past the interference, thereby allowing the lever arm to return to its fully upward position in which the ram engages the tab to permit another triggering sequence to discharge the cartridge.
  • the lever arm can also have a hook 72c, a notch 72d and a projection 72e.
  • the hammer's cam surface 62b pushes the lever arm down so that the notch in the lever arm is forced onto a firing detent 70 which prevents the lever arm and trigger from resetting at the same time that the firearm is being discharged.
  • the hammer cocking action allows the lever arm up off of the firing detent.
  • the safety's cam pushes the lever arm down so that the safety notch is on the safety detent and the hook is around the safety catch.
  • the safety notch/detent engagement prevents the trigger from moving from its rest position to its pulled position
  • the hook/catch safety engagement prevents the sear from moving from its latching position to its releasing position.
  • the cam may be offset from the top side of the lever arm. Accordingly, the lever arm may include the projection 72e to contact the safety's cam that adjusts for the offset.
  • This upward movement of cartridges is generally accomplished by a follower and a spring positioned within magazine.
  • other methods of cartridge feeding may be used to move the rounds upward into the path of the pistol's slide by the magazine follower and spring assembly.
  • the feeding phase may also include a ramping action that occurs as the pistol slide moves forward and starts to strip a cartridge forward from the magazine. It is important to note that, in many pistols, the barrel is not stationary with the frame of the pistol, but instead moves forward and backward during the entire cycle of operation, i.e., a floating barrel.
  • a cartridge chambering phase occurs next in the cycle of operation, where a cartridge is stripped from the magazine and placed into the chamber of the pistol.
  • This stripping action occurs as the slide moves forward under compressed recoil spring pressure, which in turn pulls a cartridge from the magazine.
  • the combined movement of the slide and the upward pressure of the follower/spring assembly in magazine push the cartridge up a frame/barrel ramp and into the chamber.
  • the front muzzle end of the barrel angles upward and the rearward firing chamber end of the barrel angles downward during this phase to effect the chambering of a cartridge.
  • the barrel remains fixed with the frame and may even be integrally formed with the frame.
  • the pistol enters a locking phase in which the cartridge is locked into place in the barrel with the firing mechanism at the rear of the cartridge.
  • the barrel and slide are held in place relative to the frame during this phase.
  • the barrel remains fixed in place and does not move, and the slide is locked into position relative to both the barrel and the frame.
  • the cycle of operation then "suspends" at this stage, until an operator of the pistol pulls the pistol trigger, at which time the cycle of operation enters into a firing phase.
  • a triggering mechanism releases a striker or another form of a hammer, whereby the striker transfers its energy to the firing pin, which, in turn, strikes the primer.
  • the primer ignites the propellant charge in the chambered cartridge.
  • the gas created by the ignited propellant charge expands behind the bullet, forcing the bullet away from the cartridge casing and down the barrel.
  • the barrel and slide remain in position during this initial portion of the firing phase.
  • the bullet exits the barrel through a muzzle and the gas pressure within the barrel drops.
  • the pistol enters an unlock phase, where the slide "unlocks”, “unlinks” or otherwise disengages from the barrel and frame, such that the slide can move relative thereto.
  • the fired cartridge case extraction phase often occurs during this phase due to the breaking of friction between the expended cartridge case and the chamber wall.
  • the slide continues moving rearward and the breech opens.
  • the rim of the fired cartridge case remains firmly in place, such as by an extractor and the continued rearward motion of the slide extracts the cartridge casing from the barrel.
  • the fired cartridge case ejection phase the fired cartridge case is ejected through an ejection port.
  • the cartridge case may be pivot upward and to one side which can free the case from the extractor.
  • the pistol enters a cocking phase, whereby the striker and firing mechanism are positioned to fire the next cartridge. Generally, this occurs during the continued rearward motion of the slide.
  • FIG. 4A-4H The operational sequence of firing the pistol and automatic reloading is shown in Figures 4A-4H.
  • the firing-ready rest position is shown in Figure 4A.
  • the cutout section 60d of the shaft is rotated towards the notch 64c in the sear.
  • the safety switch is rotated into the safety-off position, the notch is positioned adjacent to the cutout section which allows the sear to rotate away from the hammer catch surface. With the safety off, the sear can rotate from its latching position back to its releasing position.
  • the firing-ready cocked position is shown in Figure 4B.
  • the sear In this position, the sear is brought to its break point.
  • the trigger pull is pressed inwardly, and the lever arm ram pushes the sear tab to the sear break point in which the sear latch is at the edge of the hammer catch.
  • the lever arm extension engages the hammer cam. If the trigger pull is released, the trigger assembly returns to the rest position, with the trigger and lever arm being biased forward by the trigger spring, the lever arm remaining biased upward by the lever arm spring and the sear being biased forward by sear spring. Any further pull on the trigger causes the sear to release the hammer as shown in Figure 4C.
  • the slide fully cocks the hammer, and the next cartridge in the clip is auto-loaded into the firing chamber.
  • the slide bearing surface fully cocks the hammer, and the sear spring biases the sear to its forward most position so that the sear latch engages the hammer catch.
  • the recoil spring biases the slide forward and returns the slide to the firing ready position.
  • the trigger and lever arm are biased forward by the trigger spring.
  • the lever arm spring pushes the lever arm up further to engage the sear tab.
  • the auto-loaded round from the magazine is seated in the insert with the base of the cartridge abutting against the breech plate and the shell and bullet forced into the cartridge firing chamber.
  • the clip may hold the slide open. A loaded magazine can be inserted into the handle and the safety can be released to chamber the first round.
  • FIG. 5 A and 5B The preferred safety device in an engaged position and a disengaged position are respectively shown in Figures 5 A and 5B.
  • a solid portion 60c of the shaft engages the sear and forces the sear into its engaged position with the hammer catch surface.
  • a cutout section 60d of the shaft allows the sear to rotate away from the hammer catch surface.
  • the shaft preferably extends between both sides of the frame, and the cutout section in the center portion of the shaft is bounded by the cylindrical shaft at both ends.
  • FIGS. 6A and 6B The alternative safety device in an engaged position and a disengaged position are respectively shown in Figures 6A and 6B.
  • the safety lock is engaged so that the pistol's firing system is in a non-firing arrangement.
  • the safety switch cam rotates down and pushes the lever arm down, and the sear safety hook engages the sear safety catch.
  • the trigger safety notch on the lever arm engages the trigger safety detent in the side of the frame.
  • the lever arm ram is disengaged from the sear tab.
  • the firing-ready rest position is shown in Figure 6B. In this position, the safety switch rotates the safety cam up so that the safety is off.
  • the lever arm spring biases the lever arm up so that the sear safety hook is disengaged from the sear safety catch and the trigger safety notch is disengaged from the trigger safety detent.
  • the lever arm ram engages the sear tab.
  • the position of the recoil assembly above the barrel assembly permits the barrel of the gun to be positioned closer to the trigger and thereby closer to the operator's hand that is holding the firearm at the handle grip.
  • the offset distance 78 between barrel's centerline 46 and the top portion of the trigger 80 is less than a diameter of the barrel (D).
  • the barrel's centerline 46 or the bottom of the barrel can be positioned at or less than approximately one-half inch ( ⁇ 1 ⁇ 2") from the trigger pull's topmost exposed portion 80 at the top of the trigger guard.
  • the small offset is possible even with a barrel that handles 45 caliber ammunition, having a bullet diameter of approximately .452" and a base diameter of approximately .476".
  • the closer proximity of the barrel centerline to the trigger pull and the top of the handle reduces the moment arm between the location where the kickback force pushes against the firearm, i.e., within the barrel, and where the operator of the firearm must exert a force to stabilize the firearm, i.e., at the handle grip and trigger.
  • a smaller moment arm can significantly reduce the torque that an operator must overcome in holding the firearm as it is discharged, thereby allowing for much more accuracy in successive shots that are then fired. For example, for a typical semi-automatic pistol that has a recoil energy of approximately 4,500 in-lb, a barrel- to-handgrip distance of an inch or more would result in over 4,500 in-lb in torque that the operator must overcome.
  • the barrel-to-handgrip offset can be brought to within approximately one-half inch (1 ⁇ 2") or less which would reduce the torque to less than 2,250 in-lb.

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Abstract

La présente invention concerne une arme à feu présentant un cadre, un ensemble canon, un ensemble glissière qui maintient un ensemble de recul, et un système de tir doté d'un ensemble détente et d'un mécanisme de sécurité. Les ensembles glissière et de recul sont situés au-dessus du canon de sorte que le canon est situé entre la partie supérieure du cadre et la partie inférieure de l'ensemble glissière. L'ensemble canon comprend un logement qui est recouvert par l'ensemble glissière et fixe un côté de l'ensemble de recul. Le canon peut être raccordé de manière amovible au cadre par le biais des supports avant et arrière avec des broches amovibles et peut se raccorder de manière modulaire au cadre et à l'ensemble glissière, de telle sorte que différents canons de calibre peuvent être interchangés. En plus de la détente, l'ensemble détente présente un marteau, une gâchette, un bras de levier qui met en prise la détente, la gâchette et le marteau, et, et des ressorts qui sollicitent les composants de l'ensemble gâchette.
PCT/US2015/050240 2013-09-13 2015-09-15 Arme à feu semi-automatique compacte modulaire Ceased WO2016060774A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US15/510,978 US20170268843A1 (en) 2013-09-13 2015-09-15 Semi-automatic firearm trigger mechanism and safety device

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US14/486,633 2014-09-15
US14/486,633 US9777980B2 (en) 2013-09-13 2014-09-15 Compact semi-automatic firearm
US201562100342P 2015-01-06 2015-01-06
US62/100,342 2015-01-06

Publications (2)

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WO2016060774A2 true WO2016060774A2 (fr) 2016-04-21
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WO2017217939A1 (fr) * 2016-06-15 2017-12-21 Scooby, A.S. Pistolet muni d'un canon bas
CN109931814A (zh) * 2019-04-15 2019-06-25 奕诺(大连)科技有限公司 玩具枪用扳机联动回膛供弹机构
WO2023038610A1 (fr) * 2021-09-10 2023-03-16 Виктор Леонидович ШЕВЧЕНКО Pistolet
DE102024101075B3 (de) 2024-01-15 2025-02-20 Jannis Lewe Selbstladepistole
DE102024004134A1 (de) * 2024-01-15 2025-07-17 Jannis Lewe Selbstladepistole

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017217939A1 (fr) * 2016-06-15 2017-12-21 Scooby, A.S. Pistolet muni d'un canon bas
US11143469B2 (en) 2016-06-15 2021-10-12 M41B A.S. Pistol with a low-lying barrel
CN109931814A (zh) * 2019-04-15 2019-06-25 奕诺(大连)科技有限公司 玩具枪用扳机联动回膛供弹机构
WO2023038610A1 (fr) * 2021-09-10 2023-03-16 Виктор Леонидович ШЕВЧЕНКО Pistolet
DE102024101075B3 (de) 2024-01-15 2025-02-20 Jannis Lewe Selbstladepistole
DE102024004134A1 (de) * 2024-01-15 2025-07-17 Jannis Lewe Selbstladepistole

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