# US 5,347,912 A · Elements for decelerating the recoil of the moving parts of a fire arm > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,347,912 A - Document ID: US5347912A - Status: Granted - Kind: A - Application number: 08/066,217 - Filed: 1993-05-25 - Granted: 1994-09-20 - Earliest claimed: 1992-06-03 - Assignees: Fabrique Nationale Nouvelle Herstal, en abrege FNNH, societe anonyme - Inventors: Jean-Louis Gathoye - Web page: https://patentgrep.com/patent/US5347912A ## CPC - F41A 5/02: recoil-operated - F41A: FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE ## Abstract Elements for decelerating the recoil of the moving parts of a fire arm of the type with a casing (12) having mobile moving parts (3) bearing a mobile barrel (4) and a striker (13), whereby the drive element of said striker (13) consists of a kinematic chain (15) containing a trigger (16) revolving in the casing (12), characterized in that between the moving parts (3) and the barrel (4) a lever (1) hinged in the casing (12) is activated, whereby this lever (1) has a stop (6) towards the front making contact with a surface (5) of the moving parts (3) during only part of the recoil of said moving parts (3) whereby this recoil causes the lever (1) to revolve until it no longer makes contact with the surface (5), whereby this lever (1) also has a stop (9) towards the end making contact with a surface (8) of the barrel (4), such that during said revolving motion, the barrel (4) follows the recoil of the moving parts (3), but at a lower speed with regard to the lever L2/L1. ## Claims ### Claim 1 The combination in a firearm comprising: a casing; a slide movably guided on the casing and having a front end and a rear end and presenting a surface directed toward the rear end, the slide having a recoil movement toward the rear end upon firing; a barrel movably mounted along the slide and presenting a surface directed toward the front end of the slide; a firing device comprising a striker and a kinematic chain for activating the striker, the chain comprising a trigger pivotably mounted in the casing; and means for decelerating the slide, the means comprising a lever hingedly mounted around a hinging axis on the casing between the barrel and the slide, the lever being provided with a first stop and a second stop on two opposite sides, the first stop being situated on a side of the lever directed toward the front end of the slide and being adapted to make contact with the surface of the slide during only a part of the recoil movement of the slide, the second stop being situated at the opposite side of the lever directed toward the rear end of the slide and being adapted to come into contact with the surface of the barrel, the first stop being a distance from the hinging axis which is greater than a distance between the second stop and the hinging axis. ### Claim 2 (depends on 1) The combination of claim 1, wherein the first stop is adapted to come into contact with the surface of the slide at the beginning of the recoil of the slide. ### Claim 3 (depends on 1) The means for slide deceleration of claim 1, wherein the first stop is situated at a free end of the lever while the second stop is situated between the free end and the hinging axis. ### Claim 4 (depends on 1) The means for slide deceleration of claim 1, wherein the lever has a rest position in which the stops are simultaneously in contact with the surface of the slide and the surface of the barrel. ### Claim 5 (depends on 1) The combination of claim 1, further comprising a spring between the slide and the casing, wherein the spring maintains the surface of the slide against the first stop of the lever when the firearm is in a rest position. ### Claim 6 (depends on 1) The combination of claim 1, further comprising a spring between the barrel and the casing pushing the surface of the barrel against the second stop of the lever when the firearm is in a rest position. ### Claim 7 (depends on 1) The combination of claim 1, wherein the barrel comprises a heel, the surface of the barrel being situated on the heel. ### Claim 8 (depends on 1) The combination of claim 1, wherein the slide is provided with ribs, the surface of the slide being formed by the ribs. ### Claim 9 (depends on 1) The means for slide deceleration of claim 1, wherein the lever consists of a U-shaped element and comprises a central part and two wings projecting from the central part, the first stop being formed by the wings, the second stop being formed by the central part. ### Claim 10 The combination in a firearm comprising: a casing; a slide movably guided on the casing and having a front end and a rear end and presenting a surface directed toward the rear end, the slide having a recoil movement toward the rear end upon firing; a barrel movably mounted along the slide and presenting a surface directed toward the front end of the slide; a firing device comprising a striker and a kinematic chain for activating the striker, the chain comprising a trigger pivotably mounted in the casing; and a slide decelerator comprising a lever hingedly mounted around a hinging axis on the casing between the barrel and the slide, the lever being provided with a first stop and a second stop on two opposite sides, the first stop being situated on a side of the lever directed toward the front end of the slide and being adapted to make contact with the surface of the slide during only a part of the recoil movement of the slide, the second stop being situated at the opposite side of the lever directed toward the rear end of the slide and being adapted to come into contact with the surface of the barrel, the first stop being a distance from the hinging axis which is greater than a distance between the second stop and the hinging axis. ### Claim 11 (depends on 10) The combination of claim 10, wherein the first stop is adapted to come into contact with the surface of the slide at the beginning of the recoil of the slide. ### Claim 12 (depends on 10) The combination of claim 10, wherein the first stop is situated at a free end of the lever while the second stop is situated between the free end and the hinging axis. ### Claim 13 (depends on 10) The combination of claim 10, wherein the lever has a rest position in which the stops are simultaneously in contact with the surface of the slide and the surface of the barrel. ### Claim 14 (depends on 10) The combination of claim 10, further comprising a spring between the slide and the casing, wherein the spring maintains the surface of the slide against the first stop of the lever when the firearm is in a rest position. ### Claim 15 (depends on 10) The combination of claim 10, further comprising a spring between the barrel and the casing pushing the surface of the barrel against the second stop of the lever when the firearm is in a rest position. ### Claim 16 (depends on 10) The combination of claim 10, wherein the barrel comprises a heel, the surface of the barrel being situated on the ### Claim 17 (depends on 10) The combination of claim 10, wherein the slide is provided with ribs, the surface of the slide being formed by the ribs. ### Claim 18 (depends on 10) The combination of claim 10, wherein the lever consists of a U-shaped element and comprises a central part and two wings projected from the central part, the first stop being formed by the wings, the second stop being formed by the central part.