Patentamt

JEuropaischesEuropean Patent Office Publication number: 0186 703 B1 Office europeen des brevets

EUROPEAN PATENT SPECIFICATION

(45) Date of publication of patent specification: 24.10.90 IntCI.5: F 41 A 17/04 ® Application number: 85903523.0

@ Date of filing: 24.06.85

(88) International application number: PCT/US85/01176

(87) International publication number: WO 86/00398 16.01.86 Gazette 86/02

PISTOL MECHANISM FOR BLOCKING .

(M) Priority: 25.06.84 US 624185 Proprietor: STURM, RUGER & COMPANY, INC. Lacey Place Southport Connecticut 06490 (US) Date of publication of application: 09.07.86 Bulletin 86/28 Inventor: RUGER, William, Batterman Croydon Turnpike Publication of the grant of the patent: Croydon, NH 03773 (US) 24.10.90 Bulletin 90/43 Inventor: MELCHER, Roy, Louis 204 Third Avenue Stratford, CT 06497 (US) Designated Contracting States: BE CH DE FR GB IT LI Representative: McCallum, William Potter et al Cruikshank & Fairweather 19 Royal Exchange References cited: Square EP-A-0 057 733 Glasgow G1 3AE Scotland (GB) WO-A-82/03910 GB-A- 660 046 US-A-3 724113 DQ US-A-3 830 002 US-A-4011678 CO US-A-4 369 593 o US-A-4454 673

(D 00

Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall 0. be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been Ill paid (Art. 99(1) European patent convention). Courier Press, Leamington Spa, England. EP 0 186 073 B1 Description portion which bar opening receives a projecting lug portion of the firing pin blocking Background of the Invention piece which lug is substantially smaller than the A prior proposed firing pin blocking mechanism trigger bar opening thus resulting in engagement for semi-automatic pistols includes a pivotable s of the trigger bar with the blocking piece lug to element positioned below the firing pin which can unblock the firing pin just before firing and during be pivoted in one direction to block or in the firing and at no other times regardless of the opposite direction to unblock the firing pin. In that position of (a) the trigger, (b) its attached trigger system, the pivotable firing pin blocking element bar or (c) the reciprocating slide. is actuated by a convoluted spring associated w It is a feature of the invention that the rotatable with the hammer. firing pin blocking piece has a sear associated An example of such a firing pin blocking with it which is urged by a spring to its hammer mechanism is disclosed in EP-A-0 057733. This engaging position and is rotated in the opposite reference discloses a semi-automatic pistol which direction to release the hammer and fire the may be fired in a double- or single-action is pistol. The sear is rotated by the firing pin block- mode. The pistol includes a safety mechanism for ing piece which initially rotates to unblock the simultaneously preventing the firing pin from firing pin and then continues to rotate as it moving forward and the hammer from impacting engages with the sear and causes the sear to the firing pin when the pistol is in its "at rest" rotate by rotation of the firing pin blocking piece position. The safety mechanism includes a slide- 20 against it. mounted firing pin lever which is driven to a It is also a feature that the hammer and trigger release position by a spring-loaded frame- bar are shaped and positioned so that during full mounted safety block. The block is in turn driven manual hammer cock the trigger bar does not to the release position by an actuator. Upon the cause unblocking of the firing pin. trigger being pulled, the actuator rotates causing 25 the safety block to move the safety lever to the Brief Description of the Drawings release position. FIG. 1 is a side elevational view of a semi- Firing pin blocking has also been proposed in automatic pistol embodying the invention; semi-automatic pistols using spring loaded trans- FIG. 2 is a partial sectional view through the verse stud pieces which are mounted in the side 30 centerline of the barrel and perpendicular to the of the pistol and reciprocate in a path perpendicu- trigger and hammer pivots; lar to the axis of movement of the firing pin. (See FIG. 3 is an exploded view of the rotatable firing Ludwig U.S. Patent No. 3,724,113 issued in April pin blocking piece and the related parts of the 1973; Volkmar U.S. Patent No. 3,830,002 issued mechanism for controlling the blocking piece; August 1974; Brodbeck U.S. Patent No. 4,011,678 35 FIG. 4 is a plan view with the slide removed; issued March 1977; and U.K. Patent No. 660,046 FIG. 5 is a partial enlarged view of FIG. 2 with published October 31, 1951). In these prior the hammer down; patents, the stud pieces are reciprocated in slot- FIG. 6 is a section along line 6-6 of FIG. 5; ways under spring action and can readily stick or FIG. 7 is a partial enlarged view of FIG. 2 with jam if foreign matter enters the slotway. 40 the hammer fully rotated back by trigger pull; Blocking and unblocking of the firing pin in a FIG. 8 is a partial enlarged view of FIG. 7; semi-automatic pistol during pre-firing, firing and FIG. 9 is a side elevational sectional view post-firing is not satisfactorily accomplished by showing the hammer down and trigger back; these prior proposals. FIG. 10 is a side elevational sectional view 45 showing the slide back with hammer cocked and Summary of the Invention trigger bar down; Broadly, the present invention is a mechanism FIG. 11 is a partial enlarged view of FIG. 10; including a trigger, novel trigger bar pivotably FIG. 12 is a side elevational sectional view of the connected to the trigger, a configured slide, a sear hammer in cocked position held by the sear after and a pivotable frame mounted firing pin blocking so an initial firing and slide return; piece for accomplishing the blocking and FIG. 13 is a partial enlarged portion of FIG. 12; unblocking of the firing pin in single action, FIG. 14 is a side elevational sectional view in double action and semi-automatic modes during which the hammer or sear is in single action pre-firing (except for a fraction of a second prior mode; to and during firing) and for blocking the firing pin 55 FIG. 15 is an exploded perspective view during post-firing operation and all non-firing including the trigger, trigger bar, sear, firing pin conditions including carrying and handling of the blocking piece and hammer; pistol. FIG. 16 is a side elevational sectional view The novel trigger bar has a configured upper showing the hammer being released and firing surface for engagement with the configured so pin blocking piece rotating as the trigger bar reciprocating slide and spring means to urge the moves forward; and trigger bar up against the slide thus causing the FIG. 17 is an enlarged side elevational sectional trigger bar to be positioned both by trigger view showing the hammer manually cocked movement and by slide reciprocation. The novel against the frame with the firing pin blocking trigger bar also has an opening in its rearward 65 piece in its blocking position. EP 0186 073 B1 Description of the Preferred Embodiment ing lip 76 and blocking piece engageable wing 77. In FIG. 1, semi-automatic pistol 10 includes Ejector 74 is pivotable about ejector pivot pin 78. barrel 11, frame 12, grip 13, trigger guard 14, Also shown in FIG. 3 is slide lock lever 27 which trigger 16, hammer 17, manual safety lever 18, includes slide lock axle 40, slide body portion 82; 19, magazine release lever 22 and front 5 and catch 83. In addition sear return spring 87; and rear sights 23 and 24, respectively. Also blocking piece return spring 88; and manual shown is slide 26 and slide lock lever 27. safety sections 89 and 91 are shown. Trigger bar Turning to FIGS. 2 and 3, barrel 11 carries a side extension 92 for engaging hammer projec- 28 including primer 29, a slide 26 with a tion 67 in double action operation is also shown. firing pin housing cavity 32 and a firing pin 33 w Turning now to FIGS. 4 and 5, the hammer 17 is positioned therein. Firing pin 33 is normally urged shown down in its rest position with both firing to the rear by firing pin spring 34 which rearward pin blocking piece 43 and sear 39 rotated fully movement of the firing pin 33 is limited by a firing counterclockwise under urging of their return pin side projection 35 of firing pin head portion springs 87 and 88 and limited by lower interior 37. Firing pin head portion 37 has formed thereon w surface of slide 26 (see FIG. 3). In this state, firing an angled stop surface 41 which engages projec- pin blocking piece 43 is in its blocking position tion finger 42 of pivotable firing pin blocking piece with firing pin 33 constrained from being driven 43 to block firing pin 33. Also shown are trigger forward any substantial distance as its surface 41 bar 38 and pivotable sear 39. will engage blocking piece projection finger 42 to Firing pin blocking piece 43 includes center 20 block pin 33 from striking the primer 29 of body 44 carrying upstanding blocking finger 42; cartridge 28. depending ejector engageable leg 46 and spaced- Turning now to FIGS. 5-13, the following posi- apart depending support piece 47 which carries tions of the firing mechanism are shown: blocking piece stud 48. a) in FIGS. 5 and 6, the hammer 17 is down in its Nested within the opening between the ejector 25 rest position with firing pin blocking piece 43 leg 46 and support piece 47 of blocking piece 43 is preventing firing pin 33 from engaging cartridge pivotable sear 39. Sear 39 includes spaced-apart 38 should the pistol hammer 17 or other object members 51, 52, sear notch 53 and sear manual strike the head 37 of the firing pin; latch projection 50. Member 51 has an upper b) in FIGS. 5, 7, 8 and 9, starting with the surface 54 which engages with body portion 44 of 30 hammer down and operating in the double action blocking piece 43 when the blocking piece 43 is mode, trigger 16 is pulled causing trigger bar 38 rotated about its pivot pin 56. Sear 39 also rotates (and in particular its lateral extension 92) to move about the same pin 56 as blocking piece 43. forward pulling hammer projection 67 to rotate Trigger 16 includes two (2) trigger pivot cams hammer 17 back. As trigger pull continues, trigger 57, 58. One cam 57 is on one side of trigger 16 and 35 bar 38 and its opening 63 move forward blocking the other pivot cam with extension arm 58 is on piece stud 48 remains unengaged until surface the other side. Cam 58 includes opening 59 which 63c (the rearward surface of lower smaller open- carries trigger bar pivot stud 60 attached to (or ing area 63b of opening 63) is brought into forming a part of) trigger bar 38. Trigger 16 with contact with the blocking piece stud 48 (FIG. 7). its attached cams 57, 58 rotates in configured 40 Once the stud 48 is contacted by trigger bar 38 all frame opening 61 and is restrained in part by latch further forward movement of trigger bar 38 axle 40 of latch 27. causes rotation of the firing pin blocking piece 43 Trigger bar 38 has upper configured cam sur- in a clockwise direction. As firing pin blocking face 62 which rides against a lower interior piece 43 further rotates its upstanding finger 42 surface 25 of slide 26 (FIG. 1 ). Interior slide surface 45 swings down below firing pin surface 41 to 25 includes a straight portion 25a and a recessed completely unblock firing pin 33. Finally, in the portion 25b. Trigger bar 38 also includes trigger last stages of the forward movement of trigger bar opening 63 which opening 63 includes a bar 38 in this double action mode the bar 38 will larger upper portion 63a and a smaller lower release projection 67 of hammer 17 (FIGS. 7 and portion 63b. Trigger bar 38 is urged counter- so 8) to drop hammer 17 to fire (FIG. 9). In this just clockwise (FIG. 2) about pivot stud 60 by trigger fired state, trigger bar 38 is in its up position bar plunger 64 urged by plunger spring 65. The nested in slide recess 25b; travel and position of the trigger bar 38 during c) immediately after firing the pistol slide 26 operation and handling of the pistol is determined automatically moves to the rear to cock hammer by the position of trigger 16 and the position of 55 17 back and to lower trigger bar 38 as slide reciprocal slide 26. The varying positions of these interior surfaces 25a and 25b ride on upper trigger parts during pistol operation will be further bar surface 62 (FIGS. 10 and II). With the trigger described with reference to subsequent figures. bar 38 now down, blocking piece stud 48 moves Hammer 17 is pivotable about hammer pivot into the upper larger opening portion 63a of 66. Hammer 17 includes side projection notch 67, 60 opening 63 as blocking piece 43 (and its stud 48) sear notch 68 and hammer strut opening 71. rotates to its blocking position (FIGS. 10 and II). Hammer strut 72 together with hammer strut When slide 26 goes forward, hammer 17 rotates a spring 73 urge hammer 17 to its down position as portion of the way down until it engages and shown in FIG. 2. remains seated on sear notch 53 (FIG. 12). With Cartridge ejector 74 includes cartridge engag- 65 slide 26 forward trigger bar 38 has moved back up EP 0186 073 B1 6 into slide surface recess 25b. Firing pin blocking bar 38, not being connected to hammer 17 and piece follower 48 is now in the lower portion 63b the hammer 17 and bar 38 being configured so as of opening 63 of bar 38 and ready to be acted not to engage one another in this hammer posi- upon as when the bar again moves forward. This tion, trigger bar 38 remains stationary. Since only is the re-set position of the firing mechanism of 5 trigger-bar movement can lead to the unblocking the pistol; of firing pin, firing pin 33 remains blocked. If d) upon the next trigger pull, trigger arm 38 hammer 17 is released in this fully back position, engages follower stud 48 of firing pin blocking hammer 17 will move forward under the force of piece 43 to rotate piece 43 which in turn rotates strut 72 until the hammer notch 68 engages the sear 39 by body portion 44 of the blocking piece w sear notch 53. 43 engaging sear surface 54 (see FIG. 3). Sear 39 Upon expenditure of all rounds in magazine 19, continues to rotate with blocking piece 43, until a new magazine is loaded and the initial firing sear notch 53 moves to the point that the hammer can, as described above, be first by single or 17 is released and a subsequent firing occurs. The double action. Thereafter sequential semi-auto- blocking piece 43 and sear 39 are preferably 15 matic firing may proceed from the reset position. configured so that blocking piece 43 rotates a sufficient number of degrees to swing finger 42 Claims just clear of the firing piece 33 before it (piece 43) first contacts the sear 39. Further trigger pull 1. A semi-automatic pistol (10) having a rotates blocking piece finger 42 to assure firing 20 reciprocating slide (26) with firing pin (33) pin 33 clearance by the time sear 39 rotation mounted therein, a trigger (16), a trigger bar (38), releases hammer 27 to fire; a firing pin blocking piece (43), a sear (39) and a e) in single action mode, hammer 17 is hammer (17) comprising: manually cocked back until hammer notch 68 of A) a firing pin blocking piece (43), pivotably hammer 17 falls into sear notch 53 (FIG. 14). As 25 mounted on the frame (12) and operable to block described above, subsequent trigger pull causes the firing pin (33) in all operable positions of the trigger bar 38 to move, rotating blocking piece 43 trigger bar (38) except the just-prior-to-firing posi- (to unblock firing pin 33) and to then rotate sear tion and the firing position; the firing pin blocking 39 to release hammer 17 and fire the pistol; and piece (43) in turn comprising f) thus after the initial firing (from single or 30 i) a housing including two spaced apart flange double action modes), the hammer 17 will auto- elements (46, 47) and a central body section (44) matically through reciprocal slide action be between the two flange elements (46, 47); placed in a re-set mode (hammer 17 held by sear ii) firing pin blocking projection (42) upstanding notch 53). from the central body section (44); In the sequence of operations described above, 35 iii) a lower lug projection (48) extending from a the firing pin blocking piece 43 is in its blocking flange element (47) engageable at times with the position at all times except just before firing and trigger bar (38); during firing. For example, immediately after B) a trigger bar (38) having a forward end firing with trigger 16 back, pistol slide 26 moves portion and a rearward end portion; the trigger bar 38 down as it automatically moves 40 a) the forward end portion pivotable about the back placing firing pin blocking piece stud 48 in trigger (16); the upper portion 63a of opening 63 (FIG. 10). In b) the rearward end portion having this trigger bar position, the firing pin blocking i) a configured opening (63) therein for receiv- piece 43 moves to its normal blocking position. As ing said blocking piece projection lug (48), which the slide 26 in its normal cycle again goes for- 45 opening (63) is configured such that as the trigger ward, the trigger bar 38 will not rotate the block- bar (38) moves through its cycle the blocking ing piece 43 to unblock the firing pin 33 even if the piece lug (48) is activated to rotate the blocking trigger 16 has been held back. With the trigger 16 piece (43) only just prior to and during the descent held back, stud 48 will remain in opening 63a as of the hammer (17); the slide goes forward. Thus, when the trigger is 50 ii) a hammer engageable extension (92), and held back during cycling of the slide, firing pin iii) a surface (62) engageable with a surface (25) blocking piece 43 will remain in its blocking. To on the slide (26); fire the pistol from this trigger back position, the C) a sear (39) nested between the flange user must first move trigger 16 forward to allow elements (46, 47) of the blocking piece (43) which the trigger bar 38 to move under detent spring 55 sear (39) is engageable with the hammer (17) pressure up against and into recess 25b of closed when the hammer (17) is lowered, and caused to slide 26. The trigger bar 38 being now positioned rotate by rotation of the blocking piece (43) to with the blocking piece stud 48 in the lower release the hammer (17) for its descent to strike portion 63b of the opening 63 is ready to be fired the firing pin (33) and fire the pistol (10), by a subsequent trigger pull. 60 D) a configured surface (25) the slide (26) in Turning finally to FIG. 17, hammer 17 is shown engagement with the upper surface (62) of the manually pulled back against frame stop surface trigger bar (38) to permit the rearward end portion 95. In this position, the firing pin blocking piece 43 of trigger bar (38) to (i) raise when the slide (26) is remains in its blocking position with finger projec- forward and (ii) to lower when the slide (26) is tion 42 in front of surface 41 of pin 33. The trigger 65 rearward; EP 0 186 073 B1 8 E) the trigger bar (38), trigger bar opening (63) i) ein Gehause mit zwei auseinanderliegenden and blocking means projection lug (48) pro- Flanschelementen (46, 47) und einem zentralen portioned so that; Rumpfteil (44) zwischen den zwei Flanschelemen- a) when the hammer (17) is in its at-rest position, ten (46, 47); the blocking means lug (48) and trigger bar (38) are 5 ii) einen Schlagbolzen-Sperrvorsprung (42), not operably engaged permitting the firing pin (33) welchervon dem zentralen Rumpfteil (44)absteht; to remain blocked; iii) einen unteren Zapfenvorsprung (48), der aus b) when initially pulled back, the trigger (16) einem Flanschelement (47) herausragt und zeit- causes the hammer (17) to rotate back through weise mit dem Abzugriegel (38) in Eingriff zu engagement of the trigger bar extension (92) and w bringen ist; hammer (17); B) ein Abzugriegel (38) mit einem vorderen c) when further pulled, the trigger (16) moves the Endteil und einem ruckwartigen Endteil; trigger bar (38) and the bar opening (63) forward a) wobei dasvordere Endteil um den Abzug (16) engaging the blocking piece lug (48) to rotate the drehbar ist; blocking piece (43) and unblock the pin (33) 15 b) wobei das riickwartige Endteil d) thereafter as further pulled, the trigger (16) i) eine geformte Offnung (63) fur den besagten causes further forward movement of the trigger Sperrstiick-Vorsprungzapfen (48) aufweist, und bar (38) releasing the hammer (17) which fires the diese Offnung (63) so geformt ist, dalS, wenn sich pistol (10); and der Abzugriegel (38) zyklisch bewegt, der Sperr- e) when the trigger (16) is held in its pulled 20 stuckzapfen (48) nur mittelbar vor und wahrend position, the trigger bar (38) and lug (48) remain der Abwartsbewegung desSchlaghebels(17)zum disengaged during the cycling of the reciprocating rotieren des Sperrstiicks (43) aktiviert wird; slide (26). ii) eine in den Schlaghebel eingreifbare Verlan- 2. A semi-automatic pistol as claimed in claim 1 gerung (92) aufweist, und characterised in that a predetermined amount of 25 iii) eine Flache (62) aufweist, die mit einer Flache rotation of the blocking piece (43) from its blocking (25) auf dem VerschlulS (26) eingreifbar ist; position causes such blocking piece (43) to engage C) eine Fangklinke (39), eingebettet zwischen a surface on the sear (39) to rotate the sear (39) to den Flanschelementen (46, 47) des Sperrstiicks cause the hammer (17) to be released from the (43), wobei diese Fangklinke (39) mit dem Schlag- sear (39). 30 hebel (17) in Eingriff zu bringen ist, wenn der 3. A semi-automatic pistol as claimed in claim 1 Schlaghebel (17) gesenkt ist und durch die Rotie- or claim 2 characterised in that the configured rung des Sperrstiicks (43) zum Rotieren gebracht opening (63) only engages the lug (48) when the wird, und dadurch der Schlaghebel (17) fur die trigger bar (38) is in its forward and upper posi- Abwartsbewegung zwecks Aufschlagens auf den tions. 35 Schlagbolzen (33) und Abfeuern der Pistole (10) 4. A semi automatic pistol as claimed in any one gelost wird; of claims 1 to 3 characterised in that the opening D) eine geformte Flache (25), wobei der Ver- (63) in the trigger bar (38) includes (1) an upper schlulS (26) mit der oberen Flache (62) des Abzu- larger portion (63a) configured to such size and griegels (38) in Eingriff gebracht wird, damit es shape that the lug (48) fails to engage such 40 moglich wird, da(S der ruckwartige Endteil des opening during operation of the pistol (10) and Abzugriegels (38) (i) sich hebt, wenn der VerschlulS includes (2) a smaller lower portion (63b) with a (26) vorne ist und (ii) sich senkt, wenn der Ver- rearward surface (63c) which engages and moves schlufS (26) linten ist; the lug (48) during certain trigger bar (38) forward E) den Abzugriegel (38), die Abzug riegel-Off- positions. 45 nung (63) und den Zapfen des Sperrvorrichtungs- 5. A semi-automatic pistol as claimed in any Vorsprungs (48), welche so proportioniert sind, preceding claim characterised in that the firing pin daB blocking piece (43) and the sear (39) are rotatable a) wenn sich der Schlaghebel (17) in Ruhestel- about the same axis. lung befindet, der Sperrvorrichtungszapfen (48) 50 und der Abzugriegel (38) nicht so ineinandergrei- Patentanspriiche fen, dalS sie betriebsfahig sind, und der Schlagbol- zen (33) gesperrt bleibt; 1. Eine halbautomatische Pistole (10) mit einem b) wenn der Abzug (16) zuerst zuriickgezogen ist, KolbenverschluG (26), worin ein Schlagbolzen (33) erverursacht, da(5 der Schlaghebel (17) infolge des befestigt ist, einem Abzug (16), einem Abzugriegel 55 Ineinandergreifens von Abzugriegelvorsprung (38), einem Schlagbolzen-Sperrstiick (43), einer (92) und Schlaghebel (17) zuriick rotiert; Fangklinke (39), und einem Schlaghebel (17), die c) wenn er weiter gezogen wird, bewegt der folgendes umfalSt: Abzug (16) den Abzugriegel (38) und die Riegeloff- A) ein Schlagbolzen-Sperrstiick (43), drehbar nung (63) nach vorne, wobei der Sperrvorrich- gelagertauf dem Griffstuck (12) undeinsetzbarfur 60 tungszapfen (48) das Sperrstiick (43) rotiert und die Sperrung des Schlagbolzens (33) in alien den Bolzen (33) freigibt; einsetzbaren Positionen des Abzugriegels (38), d) wenn weiterhin gezogen, verursacht der aufcer in der Position unmittelbar vor dem Abfeu- Abzug (16) weitere Vorwartsbewegung des Abzu- ern in der SchielSposition; wobei das Schlagbol- griegels (38), wobei der Schlaghebel (17), der die zen-Sperrstuck (43) folgendes umfalSt: 65 Pistole (10) abfeuert, gelost wird; und EP 0186 073 B1 10 e) wenn der Abzug (16) in der gezogenen a) la partie d'extremite avant etant susceptible Position gehalten wird, Abzugriegel (38) und Zap- de pivoter autour de la detente (16); fen (48) wahrend der Drehung des Kolbenver- b) la partie d'extremite arriere comportant schlusses (26) au(5er Eingriff bleiben. i) une ouverture (63) ayant une certaine confi- 2. Eine halbautomatische Pistole, wie bean- 5 guration agencee dans celle-ci, destinee a rece- sprucht in Anspruch 1, dadurch gekennzeichnet, voir ledit ergot (48) faisant saillie a partir de la dalS eine vorbestimmte Rotationsanzahl des piece de blocage, laquelle ouverture (63) a une Sperrstiicks (43) aus seiner sperrenden Position configuration telle que lorsque la tige (38) de das besagte Sperrstiick (43) veranlafct, daB eine detente se deplace dans son cycle, I'ergot (48) de Flache auf der Fangklinke (39) die Fangklinke (39) w la piece de blocage est active pour ne faire zum rotieren bringt, was zur Folge hat, dalS der tourner la piece (43) de blocage que juste avant et Schlaghebel (17) von der Fangklinke (39) befreit pendant la descente du chien (17), wird. ii) un prolongement (92) susceptible de se 3. Eine halbautomatische Pistole, wie bean- mettre en prise sur le chien et sprucht in Anspruch 1 oder Anspruch 2, dadurch is iii) une surface (62) susceptible de se mettre en gekennzeichnet, dafc die geformte Offnung (63) prise avec une surface (25) situee sur le coulis- den Zapfen (48) nur dann in Eingriff bringt, wenn seau (26); sich der Abzugriegel (38) in den Vorwartsund C) une gachette (39) logee entre les elements Aufwartspositionen befindet. (46, 47) d'embase de la piece (43) de blocage, 4. Eine halbautomatische Pistole, wie bean- 20 laquelle gachette est susceptible de se mettre en sprucht in jedem der Anspriiche 1 bis 3, dadurch prise avec le chien (17) lorsque le chien (17) est dalS gekennzeichnet, die Offnung (63) in dem abaisse, sa rotation etant provoquee par la rota- Abzugriegel (38) erstens einen oberen grolSeren tion de la piece (43) de blocage afin de liberer le Teil (63a) enthalt, der in der GrolSe und Form so chien (17) en vue de lui permettre de descendre geformt ist, dalS der Zapfen (48) die besagte 25 pour frapper le percuteur (33) et faire faire feu au Offnung wahrend der Betatigung der Pistole (10) pistolet (10), nicht in Eingriff bringt; und zweitens einen kleine- D) une surface (25) configuree, situee sur le ren unteren Teil (63b) mit einer ruckwartigen coulisseau (26) en prise avec la surface superieure Flache (63c) enthalt, welche den Zapfen (48) (62) de la tige (38) de detente afin de permettre a wahrend bestimmte Vorwartspositionen des 30 la partie d'extremite arriere de la tige (38) de Abzugriegels (38) in Eingriff bringt und bewegt. detente de (i) se soulever lorsque le coulisseau 5. Eine haibautomatische Pistole, wie bean- (26) est en avant et (ii) de s'abaisser lorsque le sprucht in jedem der vorgehenden Anspriiche, coulisseau (26) est en arriere; dadurch gekennzeichnet, dalS die Schlagbolzen- E) la tige (38) de detente, I'ouverture (63) dans Sperrvorrichtung (43) und die Fangklinke (39) urn 35 la tige de detente et I'ergot (48) faisant saillie du die selbe Achse rotierbar sind. moyen de blocage etant proportionnes de fagon telle que: Revendications a) lorsque le chien (17) est dans sa position de repos, I'ergot (48) du moyen de blocage et la tige 1. Pistolet (10) semi-automatique comportant 40 (38) de detente ne sont pas fonctionnellement en un coulisseau (26) pouvant aller et venir et dans prise, en permettant ainsi au percuteur (33) de lequel est monte un percuteur (33), une detente rester bloque; (16), une tige (38) de detente, une piece (43) de b) lorsqu'elle est initialement tiree en arriere, la blocage de percuteur, une gachette (39) et un detente (16) fait tourner le chien (17) en arriere du chien (17), comprenant 45 fait de la venue en prise existant entre le prolon- A) une piece (43) de blocage de percuteur, gement (92) de la tige (38) de detente et le chien montee de fagon pivotante sur la platine (12) et (17); susceptible de bloquer le percuteur (33) dans c) lorsqu'elle est tiree plus loin, la detente (16) toutes les positions de fonctionnement de la tige deplace la tige (38) de detente et I'ouverture (63) de (38) detente a I'exception de la position de "feu so de la tige se mettant en prise vers I'avant avec imminent" et de la position de feu; la piece (43) I'ergot (48) de la piece de blocage afin de faire de blocage de percuteur comprenant de son cote: tourner la piece (43) de blocage et de debloquer le i) un corps comportant deux elements (46, 47) percuteur (33); d'embase espaces I'un de I'autre, et une partie d) puis lorsqu'elle continue d'etre tiree, la centrale (44) de corps situee entre les deux ele- 55 detente (16) provoque un deplacement supple- ments (46, 47) d'embase; mentaire vers I'avant de la tige (38) de detente, ce ii) une saillie (42) de blocage de percuteur qui qui libere le chien (17) qui fait faire feu au pistolet s'eleve a partir de la partie centrale (44) de corps; (10), et iii) un ergot (48) inferieur qui s'etend a partir e) lorsque la detente (16) est maintenue en d'un element (47) d'embase susceptible de se 60 position retiree, la tige (38) de detente et I'ergot mettre en prise a certains moments avec la tige (48) restent degages ou hors de prise pendant la (38) de detente. duree du cycle du deplacement en va-et-vient du B) une tige (38) de detente, comportant une coulisseau (26). partie d'extremite avant et une partie d'extremite 2. Pistolet semi-automatique selon la revendi- arriere; 65 cation 1, caracterise en ce qu'une amplitude de 11 EP 0 186 073 B1 12 rotation predeterminee de la piece (43) de blo- comporte (1) une partie superieure (63a) plus cage, a partir de sa position de blocage, provoque grande dont la configuration de forme et de I'engagement de la piece (43) de blocage sur une dimension est telle que I'ergot (48) ne se met pas surface de la gachette (39) afin de faire tourner la en prise avec cette ouverture pendant le fonction- gachette (39) pour provoquer la liberation du nement du pistolet (10), et cette ouverture (63) chien (17) d'avec la gachette (39). comporte (2) une partie inferieure (63b) de plus 3. Pistolet semi-automatique selon la revendi- petite dimension munie d'une surface arriere cation 1 ou la revendication 2, caracterise en ce (63c) qui se met en prise avec I'ergot (48) et le que I'ouverture (63) ayant une certaine forme ne deplace lorsque la tige (38) de detente est dans se met en prise avec I'ergot (48) que lorsque la 10 certaines positions avant. tige (38) de detente est dans sa position avant et 5. Pistolet semi-automatique selon I'une quel- dans sa position haute. conque des revendications precedentes, caracte- 4. Pistolet semi-automatique selon I'une quel- rise en ce que la piece (43) de blocage du conque des revendications 1 a 3, caracterise en ce percuteur et la gachette (39) peuvent tourner sur que I'ouverture (63) de la tige (38) de detente 15 le meme axe.

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