Barrel and exchange system for a handgun, method for operating a handgun, and carrier sleeve for a barrel and/or exchange system for a handgun

Abstract

A barrel for a handgun includes an imaginary barrel bore axis along which it extends in the x-direction, around which barrel axis the following are formed in the interior of the barrel, in succession from a rear end to a front end: a cartridge chamber, which has a first diameter; a cartridge chamber opening, which has a second diameter; a conical transition, which transitions from the second diameter to a third diameter, which is associated with the guide region; and a barrel opening, an end face being formed around the cartridge chamber opening, and the barrel being suitable for a bullet driven by hot gases to accelerate therethrough. The end face is at least 1.5 times larger than the cross-sectional surface formed by the third diameter.

Claims

1. An exchange system for a handgun, comprising: a barrel for the handgun, the barrel defining and extending along a barrel bore axis extending in an x-direction, the barrel including: a rear end; a front end; an interior; a cartridge chamber, which is formed around the barrel bore axis in the interior and has a first diameter; a cartridge chamber opening, which is formed around the barrel bore axis in the interior, succeeds the cartridge chamber in a direction from the rear end to the front end, and has a second diameter; a conical transition region, which is formed around the barrel bore axis in the interior and immediately succeeds the cartridge chamber opening in the direction; a guide region, which has associated therewith a third diameter, the conical transition region transitioning from the second diameter to the third diameter which is associated with the guide region; a barrel opening, which is formed around the barrel bore axis in the interior and succeeds the conical transition region in the direction; and an end face formed around the cartridge chamber opening, the barrel being configured for a bullet driven by hot gases to accelerate therethrough, the cartridge chamber opening is designed in a plane which is substantially normal to the barrel bore axis, the end face extending in part in the plane and in part not in the plane, the conical transition region and the end face being connected to and shaped differently relative to one another; and a carrier sleeve configured to accommodate a cartridge, the carrier sleeve including a sleeve opening end face, the end face and the sleeve opening end face each being at least 1.5 times larger than a cross-sectional surface formed by the third diameter, the cartridge chamber being configured for receiving the carrier sleeve carrying the cartridge therein and for the carrier sleeve to be expelled from the cartridge chamber after the bullet is fired by the handgun.

2. The exchange system according to claim 1, wherein the end face is one of at least 2.00 times, at least 2.15 times, and at least 2.35 times larger than the cross-sectional surface formed by the third diameter.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The above-mentioned and other features and advantages of this invention, and the manner of attaining them, will become more apparent and the invention will be better understood by reference to the following description of embodiments of the invention taken in conjunction with the accompanying drawings, wherein:

(2) FIG. 1 is a sectional side view of a barrel for a handgun;

(3) FIG. 2a is a detailed view of an alternative arrangement in the end face design;

(4) FIG. 2b is a detailed view of an alternative arrangement in the end face design;

(5) FIG. 3 is a ramp block associated with and separable from the barrel, shown in a spatial representation;

(6) FIG. 4 is an assembly group including original breech, original barrel, and original locking spring of a handgun with a large caliber cartridge in the cartridge chamber;

(7) FIG. 5 is an assembly group including original breech, barrel and original locking spring of a handgun with a carrier sleeve in the cartridge chamber and a small caliber cartridge stored therein;

(8) FIG. 6a is a side view of carrier sleeve of the exchange system;

(9) FIG. 6b is a side view of carrier sleeve of the exchange system; and

(10) FIG. 6c is a side view of carrier sleeve of the exchange system.

(11) Corresponding reference characters indicate corresponding parts throughout the several views. The exemplifications set out herein illustrate embodiments of the invention, and such exemplifications are not to be construed as limiting the scope of the invention in any manner.

DETAILED DESCRIPTION OF THE INVENTION

(12) Referring now to the drawings, and more particularly to FIG. 1, there is shown a barrel 1 for a handgun 2 which extends along an imaginary barrel bore axis 3, extending in the x-direction, around which the following are formed in interior 4 of barrel 1, in succession from a rear end 5 to a front end 6: a cartridge chamber 8, which has a first diameter 7; a cartridge chamber opening 10, which has a second diameter 9; a conical transition region 13, which transitions from second diameter 2 to a third diameter 12, which is associated with guide region 11; and a barrel opening 14, an end face 15 being formed around cartridge chamber opening 10, and wherein barrel 1 is suitable for a bullet 16 driven by hot gases to accelerate therethrough, wherein end face 15 is at least 1.5 times larger than the cross-sectional surface formed by third diameter 12. In the illustrated example, the end face is intended to be approximately 2.42 times larger than the cross sectional surface formed by third diameter 12. In the illustrated example, third diameter 12 of guide region 11 is adapted to the diameter of the bullet of a so-called small caliber cartridge, more precisely the standard cartridge caliber 0.22 long rifle.

(13) Cartridge chamber opening 10 is arranged in a plane E which is substantially normal to barrel bore axis 3 and end face 15 extends at least in part in plane E. In some regions, end face 15 runs in a funnel shape towards cartridge chamber opening 10.

(14) FIG. 2a shows an alternative arrangement of the design of end face 15. In this version, end face 15 extends at least in part beyond plane E into surrounding region 17, concentrically arranged around transition region 13.

(15) FIG. 2b illustrates an additional alternative arrangement of the design of end face 15. In this arrangement, end face 15 has a channel-shaped recess 18, which can run in a ring shaped manner around cartridge chamber opening 10. This design characteristic can be combined with the two alternatives described previously.

(16) In FIGS. 2a and 2b, distance A of end face 15 to rear end 5 of the barrel is also recognizable. Consistent in all subsequent drawings, the reference identifications used in previously discussed drawings are used accordingly for same components.

(17) FIG. 1 also shows that barrel 1 has an outside contour with a barrel top side 19 and a barrel bottom side 20 and that the axis of barrel bore 3 is eccentrically placed relative toward bottom side 20 of the barrel. In addition a barrel ramp 21 with a guide surface 22 for a bullet and/or a shell 23 of a cartridge 24 is arranged on bottom side 20 of the barrel. Bullet 16 and/or shell 23 of a cartridge 24, or in particular a carrier sleeve 29, is supported and guided on the guide surface when it is inserted, for example in the self-loading process, by breech 32 or a component associated with same, for example a breechblock head, from the magazine of a handgun 2 which is not shown here but merely indicated in FIG. 5, into cartridge chamber 8 of barrel 1 from its rear end 5.

(18) It is herein recognizable, that guide surface 22 of barrel ramp 21 includes a first part 22-1 and a second part 22-2 and that second part 22-2 is arranged on barrel 1 or is firmly connected with barrel 1, and that first part 22-1 is arranged on a ramp block 25 which is detachable from the barrel, which can be without tools. First part 22-1 represents more than 50%, even more than 75% of the guide surface.

(19) A first gliding surface 26 is provided on bottom side 20 of the barrel and a second gliding surface 28 is provided on top side 27 of ramp block 25, so that on contact between first gliding surface 26 and second gliding surface 28, barrel 1 is movable along the two gliding surfaces 26, 28, parallel to the axis of barrel bore 3.

(20) FIG. 3 shows the ramp block in a perspective view. Ramp block 25 is designed for tool-free detachable securement in handgun 2 which is merely indicated in FIG. 5 and has a first functional surface 37 and a second functional surface 38.

(21) FIG. 4 shows an assembly group of a grip component 31 indicated in FIG. 5, consisting of a breech 32, an original barrel 35 and a locking spring 33, which can be released and fixed on grip component 31 in a repeatable manner, depending on the position of locking unit 34. A large caliber cartridge 24-1 is illustrated in the assembly group, for purpose of clarification. FIG. 4 thus shows the condition of a handgun 2also merely indicated in FIG. 5before exchange of original barrel 35 and barrel 1, whereas FIG. 5 shows the condition after the exchange of original barrel 35 and barrel 1.

(22) For the sake of clarity, a carrier sleeve 29 is illustrated in cartridge chamber 8 of barrel in FIG. 5 which is loaded in its interior with a KK cartridge. All other components of handgun 2, in particular also breech 32 and locking spring 33 are identical to the components shown in FIG. 4.

(23) FIGS. 6a and 6b show a carrier sleeve which is shown in a side view in FIG. 6a and in a sectional side view in FIG. 6b. In the sectional side view, sleeve opening end face 30 is clearly recognizable, extending from opening 39 of carrier sleeve 29 to cylindrical part 40 of its surface area 41. The end face is convex in the illustrated example.

(24) FIG. 6c shows an arrangement of a carrier sleeve 29 which, in at least one section of a surface area of carrier sleeve 29, characterized by first diameter 7, has a first average surface roughness depth Rz1, and a second average surface roughness depth Rz2 in at least one section of an interior surface area of carrier sleeve 29, characterized by third diameter 12, and wherein first average surface roughness depth Rz1 is smaller than second average roughness depth Rz2. In this case, the entire surface area of carrier sleeve 29 which is characterized by first diameter 7 is identified by a first average roughness depth Rz1, whereas the entire interior surface area of the carrier sleeve which is characterized by third diameter 12 has a second average roughness depth Rz2. First average roughness depth Rz1 is hereby in a range of between 0.04 ?m and 8.0 ?m, and second average roughness depth Rz2 compared to the first average roughness depth Rz1 can be increased by at least 10%, or by at least 25%, or by at least 35%, and by a maximum of 250%, or by a maximum of 200%. In addition, this arrangement of carrier sleeve 29 has in its interior a fourth diameter 43 which belongs to an expansion region 44 in which the shell of cartridge 24-2 during the shot can expand at least in a partial section in a way, that it is plastically deformed after the shot.

(25) The carrier sleeve can form an area at its front region, which can be qualitatively adapted to the shape of a bullet of a large-caliber cartridge and can form a second diameter 42 there. Front face 30 (which can be referred to as an end face) can then be divided into a first front face 30 and a second front face 30.

(26) Component Identification List 1 barrel 2 handgun 3 barrel bore axis 4 interior of barrel 5 rear end 6 front end 7 First diameter 7 first diameter of carrier sleeve 8 cartridge chamber 9 second diameter 10 cartridge chamber opening 11 guide region 12 third diameter 12 third diameter of the carrier sleeve 13 transition region 14 barrel opening 15 end face 16 bullet 17 surrounding region 18 channel-like recess 19 top side of barrel 20 bottom side of barrel 21 barrel ramp 22 guide surface 22-1 first part of guide surface 22-2 second part of guide surface 23 shell 24 cartridge 24-1 large caliber cartridge 24-2 small caliber cartridge (KK cartridge) 25 ramp block 26 first gliding surface 27 top side of ramp block 28 second gliding surface 29 carrier sleeve 30 sleeve opening end face 30 first end face 30 second end face 31 Grip 32 Breech 33 locking spring 34 locking unit 35 original barrel 36 cartridge chamber of original barrel 37 first functional surface 38 second functional surface 39 opening of carrier sleeve 40 cylindrical part of surface area 41 surface area of carrier sleeve 42 second diameter of the carrier sleeve 43 fourth diameter of the carrier sleeve 44 expansion region E plane X x-direction Y y-direction Z z-direction

(27) While this invention has been described with respect to at least one embodiment, the present invention can be further modified within the spirit and scope of this disclosure. This application is therefore intended to cover any variations, uses, or adaptations of the invention using its general principles. Further, this application is intended to cover such departures from the present disclosure as come within known or customary practice in the art to which this invention pertains and which fall within the limits of the appended claims.